EP2925120A1 - Pollen compositions and methods for distribution on flowering plants - Google Patents
Pollen compositions and methods for distribution on flowering plantsInfo
- Publication number
- EP2925120A1 EP2925120A1 EP13857954.5A EP13857954A EP2925120A1 EP 2925120 A1 EP2925120 A1 EP 2925120A1 EP 13857954 A EP13857954 A EP 13857954A EP 2925120 A1 EP2925120 A1 EP 2925120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- viable pollen
- composition
- pollen
- viable
- flowering plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
- A01H1/027—Apparatus for pollination
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
- A01N65/34—Rosaceae [Rose family], e.g. strawberry, hawthorn, plum, cherry, peach, apricot or almond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
Definitions
- This application relates to the agricultural distribution of pollen compositions on flowering plants to increase pollination of the flowering plants.
- the present invention specifically relates to the new viable pollen compositions, mechanized distribution systems and methods to enhance and enable mechanical distribution of pollen compositions on flowering plants to reduce risks associated with standard delivery means.
- Almonds are a very early blooming crop and the almonds cover vast areas in an almost monoculture so there is little else for the bees to forage on during this time and can lead to unhealthy conditions and death of bees.
- CCD Cost of renting beehives has increased rapidly for many crops such as almonds. Beehive rentals have gone from $ 100 an acre to the current rate of $350 an acre in just five years (8). This problem has been exacerbated by the fact that due to increased almond demand, the number of almond acres has been increasing thus causing more demand on an increasing limited supply of bees.
- the bee pollination problem affects an extremely large market.
- bee- pollinated crops had a $ 15 billion value in 2012 (10).
- the worldwide value of bee-pollinated crops is $217 billion.
- Almonds, apples, cherries, plums, pears, blueberries, avocados, cantaloupes, cucumber, kiwi, and apricots are a few of the crops that use bees as a pollination method (1 1).
- the almond crop is the most affected by the current bee crisis.
- the almond market is composed of about 6,500 farmers that grow about 810,000 acres of almonds in California (12).
- the almond industry is also experiencing strong growth with demand growing at 7.3% annually (13).
- the value of the almond harvest was $2.2 billion (14).
- the almond industry's reached $4.1 billion (15).
- the number of fruit bearing acres increased from 590,000 acres in 2005 to 810,000 acres in 2012 (16).
- the present invention is directed to improved pollen compositions and methods of disbursing viable pollen on a flowering plant.
- the improved pollen compositions enhance pollen viability duration and/or pollen disbursement via mechanical means, e.g., electrostatic application.
- the viable pollen compositions preferable include a plurality of viable pollen grains and a combination of at least two water miscible carriers selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate.
- the viable pollen compositions includes viable pollen grains and at least one water miscible carrier in an amount of at least 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, or 98% of the pollen composition by weight, wherein the at least one water miscible carrier selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate, for example, a viable composition comprising at least propylene glycol.
- the composition comprises a plurality of viable pollen grains; and a combination of at least two water miscible carriers selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, 1,4-butanediol, and ethyl acetate; or at least one water miscible carrier in an amount of at least 40% of the pollen composition by weight, wherein the at least one water miscible carrier is selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, 1,4-butanediol, and ethyl acetate.
- the composition comprises a plurality of viable pollen grains; and at least one water miscible carrier selected from the group consisting of: propylene glycol and ethylene glycol.
- the at least two water miscible carriers or the at least one water miscible carrier may be any one of propylene glycol and glycerol; glycerol and ethylene glycol; propylene glycol and ethylene glycol; ethyl acetate and glycerol; ethyl acetate and propylene glycol; and ethyl acetate and ethylene glycol.
- the composition may further comprise sugars, potassium, calcium, boron, and nitrate ions to promote pollen tube growth.
- the composition further comprises bee attractants.
- the composition further comprises antioxidants and/or preservatives.
- the pollen distribution system comprises: at least a first tank containing a viable pollen composition; a second tank containing an aqueous solution in fluid communication with the first tank; a mixing valve or a mixing tank for mixing the viable pollen composition from the first tank with the aqueous solution from the second tank.
- the pollen distribution system typically further comprises a spray nozzle in fluid communication with said mixing valve or mixing tank; and optionally, a source of atomizing gas connected to said spray nozzle.
- the invention is further directed to methods of disbursing viable pollen on a flowering plant - e.g., almond; cherry; pear; apple; pistachio; plum; peach; apricot, avocado; blueberry; melon; cucumber; cotton; coffee; asparagus; onion; broccoli; alfalfa; soy; celery; tangerine, lemon, strawberry, quince, blackberry, tomatoes, and raspberry.
- a flowering plant e.g., almond; cherry; pear; apple; pistachio; plum; peach; apricot, avocado; blueberry; melon; cucumber; cotton; coffee; asparagus; onion; broccoli; alfalfa; soy; celery; tangerine, lemon, strawberry, quince, blackberry, tomatoes, and raspberry.
- One exemplary method of dispensing viable pollen on a flowering plant comprises the steps of adding an aqueous solution to the viable pollen composition described herein to produce a spray volume; and spraying at least a portion of the spray volume on a flowering plant, thereby dispensing the viable pollen on the flowering plant to pollinate the flowering plant.
- the viable pollen composition can be dispensed using an electrostatic sprayer.
- the aqueous solution may be added to the viable pollen composition in an amount of at least 50%, 75%, 85%, 95%, or 97% by weight using a mixing valve or mixing tank prior to spraying on the flowering plant.
- the aqueous solution is added to the viable pollen composition within 5 seconds, 10 seconds, 5 minutes, 15 minutes, 30 minutes, 45 minutes or an hour of spraying the flowing plant with the viable pollen composition.
- the invention is also directed to a method of dispensing viable pollen, comprising the steps of: adding a viable pollen composition as described herein to a pollen storage container suitable for connecting to a dispensing device, the viable pollen composition comprising a plurality of viable pollen grains and at least two water miscible carriers selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3 -butanediol, and 1,4- butanediol and ethyl acetate; or at least one water miscible carrier in an amount of at least 20%, 30%, 40%, 50%, or 60% of the viable pollen composition by weight, wherein the at least one water miscible carrier selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3 -butanediol, and 1 ,4-butanediol and ethyl acetate to create a viable pollen composition; and propelling at least
- the invention may be used to pollenate any flowering plant including, but not limited to, asterids, rosids, eudicots, and plants from the Rosaceae family.
- Figure 1 depicts a system for providing pollen distribution with a first tank (1) containing a pollen suspension, a second tank (2) containing an aqueous solution, and a mixing valve (3) or mixing tank (not shown) joining the two tanks.
- a spray nozzle (5) is in fluid communication with the mixing valve (3).
- a source of atomizing gas (4) and the spray (6) leaving the spray nozzle (5) are also shown.
- Figure 2 depicts a pollen grain (8) inside a droplet (7) after leaving the spray nozzle.
- Figure 3 depicts the thirty-six acre test plot of almond trees near Madera, California where trees were treated with 10 grams of pollen per acre or 40 grams of pollen per acre and the resulting almond yields were measured and compared to untreated controls.
- Figure 4 depicts the flow rate (mL/min) at the various pump settings for application of the pollen in the slurry mixture during the field trials in the almond grove near Madera, California.
- the present invention provides improved viable pollen compositions that are especially useful for mechanical pollination of flowering plants.
- the improved pollen compositions are particularly useful with electrostatic application sprayers.
- An exemplary viable pollen compositions advantageously includes a plurality of viable pollen grains and a combination at least two water miscible carriers selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate.
- the at least two water miscible carriers is selected from the group consisting of: propylene glycol and glycerol; glycerol and ethylene glycol; propylene glycol and ethylene glycol; ethyl acetate and glycerol; ethyl acetate and propylene glycol; and ethyl acetate and ethylene glycol.
- TABLE 1 provides a few preferred formulations for solvent blend based on weight % of each ingredient.
- the propylene glycol, glycerol, ethyl acetate, and/or ethylene glycol in the formulation may be at least 5%, at least 10%, at least 15%, at least 20%, at least 25%, at least 30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, or at least 90% of the pollen composition by weight.
- the plurality of pollen grains in the formulation may be about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, or about 50% of the pollen composition by weight.
- the plurality of viable pollen grains is generally added to the formulation at between 1% and 40% of the composition by weight, for example, between 5% and 25%, or more specifically, 7.5% and 20%.
- 5% viable pollen is added to the solvent blend to make the viable pollen composition, there would be 69.5% propylene glycol, 25.65% glycerol and 5% viable pollen based on the weight of the composition.
- the plurality of pollen grains remains viable in the formulation for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, or at least 7 days.
- the composition of the present invention comprises a viable pollen suspension that contains at least 1,000,000 pollen grains, 50,000,000 pollen grains, at least 80,000,000 pollen grains, at least 100,000,000 pollen grains, at least 150,000,000 pollen grains, at least 200,000,000 pollen grains, at least 2,500,000,000 pollen grains, at least 5,000,000,000 pollen grains, at least 7,500,000,000 pollen grains, at least 10,000,000,000 pollen grains, or at least 15,000,000,000 pollen grains per liter.
- an aqueous solution is added to the viable pollen composition in preparation for distribution on a flowing plant, the amount of pollen per liters diluted according to the amount of aqueous solution added. For example, at least 45, 50, or 100 million pollen grains per liter after mixing with the aqueous solution.
- the viable pollen compositions include viable pollen grains and at least one water miscible carrier in an amount of at least 20%, 30%, 40%, 50%, 60%, 70%, 75%, or 80% of the pollen composition by weight, wherein the at least one water miscible carrier selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate, for example, a viable composition comprising propylene glycol in an amount that is at least 35% of the composition by weight.
- the at least one water miscible carrier selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate, for example, a viable composition comprising propylene glycol in an amount that is at least 35% of the composition by weight.
- the viable pollen composition typically comprises less than 10% water by weight of the composition, e.g., less than 5%, 3%, 1%, or 0.5%, before preparation for distribution and use for pollination of flowing plants.
- An aqueous solution is typically added to the viable pollen composition within 5 seconds, 10 seconds, 5 minutes, 30 minutes, 45 minutes, or an hour of preparation and the mechanical distribution of the viable pollen on the flowing plant.
- the amount of aqueous solution (e.g., water) added to the viable pollen composition in preparation for distribution is generally in amount between, 99.9% and 60%; more specifically more than 75%, 80%, 90%, 95%, or 99%.
- the plurality of viable pollen grains is preferably from an eudicot, e.g., an asterid or rosid.
- pollen grain suitable for use in the compositions include: almond; cherry; pear; apple; pistachio; plum; peach; apricot, avocado; blueberry; melon; cucumber; cotton; coffee; asparagus; onion; broccoli; alfalfa; soy; celery; tangerine, lemon, strawberry, quince, blackberry, and raspberry pollen.
- the viable pollen composition has a density suitable for a type of pollen added.
- the pollen composition is prepared so that it has a density of between 1.00 g/cc and 1.20, more specifically between 1.03 g/cc and 1.12 g/cc, more preferably between 1.05 g/cc and 1.10 g/cc, for example, about 1.08 g/cc.
- composition of the present invention may further contain sugars, potassium, calcium, boron, and nitrates. These additives may promote pollen tube growth after pollen distribution on flowering plants.
- Bee attractants may also be included.
- Known bee attractants include pheromones and essential plant oils.
- a "pheromone" is a natural or synthetic chemical substance that triggers a response in members of a species.
- a pheromone that can be used in the present invention is the Nasonov (alternatively, Nasanov) pheromone, which is released by worker bees to orient returning forager bees back to the colony.
- Nasonov includes nerol, (E,E)-farnesol, geraniol, nerolic acid, citral and geranic acid.
- Bees use Nasonov to find the entrance to their colony or hive, and they release it on flowers so other bees know which flowers have nectar.
- Synthetic versions of Nasonov may contain any one of the chemical compounds present in natural Nasonov or any combination of these chemical compounds.
- one synthetic version of Nasonov pheromone consists of citral and geraniol in a 2: 1 ratio.
- Essential oils producing fragrances found in highly scented flowers may also be used in the composition of the present invention. Chemoreceptors in their antennae cause bees to seek out these fragrances.
- One essential oil that may be used is essential oil of anise. Honeybees can identify the fragrance from a few drops of essential oil of anise from a considerable distance.
- composition of the present invention contains dehydrated or partially dehydrated viable pollen.
- the composition of the present invention may contain a preservative to prevent the growth of microorganisms.
- the preventions of the action of microorganisms can be brought about by various antibacterial and antifungal agents, for example, parabens, chlorobutanol, sorbic acid, and the like.
- Antioxidants may also be added to the pollen suspension to preserve the pollen from oxidative damage during storage. Suitable antioxidants include, for example, ascorbic acid, tocopherol, sulfites, metabisulfites such as potassium metabisulfite, butylhydroxytoluene, and butylhydroxyanisole.
- the invention also provides methods of dispensing viable pollen on a flowering plant.
- the disclosed electrostatic pollination application process may be used on any bee-pollinated plant.
- the method comprises adding an aqueous solution to the viable pollen composition of the invention to produce a spray volume; and spraying at least a portion of the spray volume on a flowering plant, thereby dispensing the viable pollen on the flowering plant to pollinate the flowering plant.
- the aqueous solution is generally added to the viable pollen composition in an amount of at least 50% (e.g., at least 65%, 75%, 85%, 95%, 98%, 99%, 99.5% by weight) using a mixing valve and/or a mixing tank prior to disperse on the flowering plant at least a portion of the spray volume on a flowering plant.
- an electrostatic sprayer is used to spray at least a portion of the spray volume on a flowering plant.
- the aqueous solution is added to the viable pollen composition within 5 seconds, 10 seconds, 5 minutes, 10 minutes, 30 minutes, 45 minutes or an hour of spraying the flowing plant with the viable pollen composition.
- a mixing tank can be used to mix the water and viable pollen composition prior to distribution. The length of time that the pollen is in the aqueous mixture affects viability of the pollen.
- the method of dispensing viable pollen comprises the steps of adding a viable pollen composition to a pollen storage container suitable for connecting to a dispensing device, the viable pollen composition comprising a plurality of viable pollen grains and a combination of at least two water miscible carriers selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate; or at least one water miscible carrier in an amount of at least 20%, 30%, 40%, 50%, or 60% of the viable pollen composition by weight, wherein the at least one water miscible carrier selected from the group consisting of: propylene glycol, glycerol, ethylene glycol, 1,3-butanediol, and 1,4-butanediol and ethyl acetate to create a viable pollen composition; followed by the step of propelling at least a portion of the viable pollen
- the invention further comprises mixing the viable pollen composition with an aqueous solution from a second container using a mixing valve and/or a mixing tank prior to propelling at least a portion of the viable pollen composition on the flowering plant.
- the aqueous solution is mixed with the viable pollen composition within 5 seconds, 10 seconds, 5 minutes, 15 minutes, 30 minutes, 45 minutes or an hour of dispersing the viable pollen aqueous mixture on a flowing plant.
- the viable pollen mixture is mechanically dispersed using an electrostatic sprayer.
- the dispensing nozzle preferably used in mechanical distribution of the viable pollen mixture forms viable pollen droplets upon spraying or propelling the viable pollen composition onto the flowering plant.
- the ratio of the viable pollen droplet volume compared to the volume of the viable pollen grain is less than 1.5: 1, less than 2.0: 1, less than 2.5: 1, less than 3.0: 1, less than 3.5: 1, less than 4.0: 1, less than 4.5: 1, less than 5.5: 1, less than 6.0: 1, less than 6.5: 1, less than 7.0: 1, less than 7.5: 1, less than 8.0: 1, less than 8.5: 1, less than 9.0: 1, less than 9.5: 1, or less than 10.0: 1.
- the ratio of the viable pollen droplet volume compared to the volume of the viable pollen grain is less than 3.0: 1.
- the methods of the invention may further comprise adding a bee attractant to the pollen suspension and an electrostatic sprayer is used to spray at least a portion of the spray volume on a flowering plant.
- the droplets containing the pollen suspension are applied to a group of flowering plants within 1 day, 2 days, 3 days, 4 days, 5 days, 6 days, or 1 week to allow for uniform maturing of the flowering plants.
- the applying the droplets containing the pollen suspension may occur after induction of the flowering plants to produce flowers.
- the method of the present invention may further comprise adding a bee attractant to the pollen suspension.
- the resulting droplets may then be applied to flowering plants and bees allowed to contact the flowering plants to increase the efficiency of pollination.
- Small water droplets containing sugars and/or pollen can be extremely stimulating to bee activity. Spraying with this mixture when flowers are mature may lead to increased pollination through increased bee activity.
- the droplets containing the pollen suspension are applied in the absence of bees to increase homogeneity in resulting fruits and/or seeds.
- the random pollination by natural vectors such as bees is undesirable because it can lead to mixed genetic products.
- netting or other bee exclusion devices including distance and by pollinating with a spray it is possible to more carefully control the pollen fertilization product.
- the methods of the invention generally are directed to dispensing viable pollen on a flowering plant that is a eudicot, for example, an asterid or rosid and more specifically a plant from the Rosaceae family.
- flowering plants suitable for use with the methods described herein include: almond; cherry; pear; apple; pistachio; plum; peach; apricot, avocado; blueberry; melon; cucumber; cotton; coffee; asparagus; onion; broccoli; alfalfa; soy; celery; tangerine, lemon, strawberry, quince, blackberry, and raspberry pollen.
- the plurality of viable pollen grains in the viable pollen composition is chosen based on what flowering plant the viable pollen mixture will be dispensed on. For example, when the plurality of viable pollen grains in the viable pollen mixture are almond or cherry, the viable pollen mixture will be dispersed on an almond or cherry plant respectively.
- disbursement amounts of the viable pollen composition on the flowering plant in grams per acre is shown below in Table 2 - disbursement preferable occurs soon after mixing with water to preserve viability.
- the invention is a system for providing pollen distribution comprising: a first tank (1) containing a pollen suspension in a water miscible carrier; a second tank (2) containing an aqueous solution in fluid communication with said first tank; a mixing valve (3) or a mixing tank (not shown) joining the pollen suspension from said first tank and the aqueous solution from said second tank; a spray nozzle (5) in fluid communication with said mixing valve; and optionally, a source of atomizing gas (4) connected to said spray nozzle.
- FIG. 1 there are two tanks: one holding the pollen suspension (1) and one holding the aqueous born materials (2).
- the carrier for the pollen suspension has the desirable properties of being water miscible and not harmful to the pollen suspended.
- the aqueous tank holds the water for the spray volume. Either tank may also contain nutrients and growth factors for pollen tube growth. These nutrients include: sugars, potassium, calcium, boron, and nitrate ions and other desirable materials.
- the outlets from the aqueous and non-aqueous tanks combine at a mixing valve (3) or a mixing tank (not shown). The two components mix here and then move to the spray nozzle (5).
- An additional input to the nozzle can be a source of atomized gas such as compressed air (4).
- the mixing tank is used to allow the aqueous solution to be mixed with the viable pollen composition for at least 5 seconds, 5 minutes, 15 minutes, 30 minutes, 45 minutes or 55 minutes.
- a mixing value (3) can be used in conjunction with a mixing tank for delay in of disbursement of the viable pollen mixture to provide certain benefits of bringing the viable pollen in contact with water for a short time, without compromising the viability of the pollen.
- Two dominant methods of producing very small spray droplets are by having a high liquid pressure drop through the nozzle or by using a high velocity air stream going through the nozzle and removing liquid from an orifice.
- the fine spray leaving the nozzle can be charged by ions created in the nozzle by a potential difference induction or corona discharge.
- the droplets are as small as practical while still holding the pollen.
- the droplet weight to charge density is a ratio that may impact how quickly the droplet will attach to the plant being pollinated.
- the diameter of the droplet to the diameter of the pollen grain is about 1.5: 1, about 2.0: 1, about 2.5: 1, about 3.0: 1, about 3.5: 1, about 4.0: 1, about 4.5: 1, or about 5.0: 1.
- Figure 2 shows a droplet (7) and a pollen grain (8) at the preferred ratio are such that the droplet is small as possible and still able to transmit the pollen grain.
- One example is about 3.0: 1 for the diameter of the droplet to the diameter of the pollen grain.
- the volume of the droplet to the volume of the pollen grain is about 1.5: 1, about 2.0: 1, about 2.5: 1, about 3.0: 1, about 3.5: 1, about 4.0: 1, about 4.5: 1, about 5.5: 1, about 6.0: 1, about 6.5: 1, about 7.0: 1, about 7.5: 1, about 8.0: 1, about 8.5: 1, about 9.0: 1, about 9.5: 1, or about 10.0: 1.
- the spray nozzle is a single-fluid nozzle.
- Single- fluid or hydraulic spray nozzles utilize the kinetic energy of the liquid to break it up into droplets. As the fluid pressure increases in a single-fluid nozzle, the flow through the nozzle increases, and the drop size decreases. Many configurations of single fluid nozzles may be used with the invention.
- the single-fluid nozzle is a plain orifice nozzle.
- the pressure drop applied may be high (e.g., at least about 25 bar) so that the material is finely atomized.
- the single-fluid nozzle is a shaped orifice nozzle.
- the shaped orifice may use a hemispherical shaped inlet and a "V" notched outlet to cause the flow to spread out on the axis of the V notch.
- the single-fluid nozzle may also be a surface impingement nozzle, which causes a stream of liquid to impinge on a surface resulting in a sheet of liquid that breaks up into drops.
- the impingement surface may be formed in a spiral to yield a spiral shaped sheet approximating a full cone spray pattern or a hollow- cone spray pattern.
- the spiral design generally may produce a smaller drop size than the pressure swirl type nozzle design, for a given pressure and flow rate. This design is clog resistant due to the large free passage.
- the single-fluid nozzle may be a pressure-swirl spray nozzle.
- the stationary core of a pressure-swirl spray nozzle induces a rotary fluid motion, which causes the swirling of the fluid in the swirl chamber.
- a film is discharged from the perimeter of the outlet orifice producing a characteristic hollow cone spray pattern.
- Air or other surrounding gas is drawn inside the swirl chamber to form an air core within the swirling liquid.
- Many configurations of fluid inlets may be used to produce this hollow cone pattern.
- the single-fluid nozzle may be a spill-return pressure-swirl single-fluid nozzle. This nozzle is one variety of pressure swirl nozzle that includes a controlled return of fluid from the swirl chamber to the feed system that allows the nozzle pressure drop to remain high while allowing a wide range of operating rates.
- the single-fluid nozzle is a solid cone single-fluid nozzle.
- the swirling liquid motion is induced with a vane structure, but the discharge flow fills the entire outlet orifice.
- a full cone nozzle will produce a larger drop size than a hollow cone nozzle.
- the spray nozzle may be a two-fluid nozzle.
- Two-fluid nozzles atomize a liquid by causing the interaction of an atomizing gas with the liquid. Compressed air is most often used as the atomizing gas, but sometimes steam or other gases are used.
- the many varied designs of two-fluid nozzles can be grouped into internal mix or external mix depending on the mixing point of the gas and liquid streams relative to the nozzle face.
- the invention includes a two-fluid nozzle that is an internal mix two-fluid nozzle where fluids make contact inside the nozzle. Shearing between high velocity gas and low velocity liquid may disintegrate the liquid stream into droplets, producing a high velocity spray.
- the internal mix nozzle may use less atomizing gas than an external mix atomizer and is better suited to higher viscosity streams.
- the invention includes a two-fluid nozzle that is an external- mix two-fluid nozzle.
- a two-fluid nozzle that is an external- mix two-fluid nozzle.
- the fluids make contact outside the nozzle.
- External-mix two-fluid nozzles may require more atomizing air and a higher atomizing air pressure drop because the mixing and atomization of liquid takes place outside the nozzle.
- the spray nozzle is a compound nozzle.
- a compound nozzle is a type of nozzle in which several individual single-fluid nozzles or two- fluid nozzles are incorporated into one nozzle body. Compound nozzles allow for design control of drop size and spray coverage angle.
- the spray nozzle may produce electrostatic charging of fluid as the fluid leaves the spray nozzle.
- the viable pollen compositions described herein are well suited for use in an electrostatic sprayer. An electric potential difference may be created in the nozzle resulting in a corona discharge and ionization of the spray and droplets leaving the nozzle. Electrostatic charging of sprays is very useful for high transfer efficiency. The charging is typically at high voltage (e.g., 1.5 KV to about 20 kV to about 40 kV) but low current.
- the invention may include a spray nozzle with rotary atomizers. Rotary atomizers use a high speed rotating disk, cup or wheel to discharge liquid at high speed to the perimeter, forming a hollow cone spray.
- the rotational speed controls the drop size.
- the invention may also include a spray nozzle with ultrasonic atomizers, which utilize high frequency (e.g., about 20 kHz to about 50 kHz) vibration to produce narrow drop-size distribution and low velocity spray from a liquid.
- the vibration of a piezoelectric crystal causes capillary waves on the nozzle surface liquid film.
- a mixing paddle is used in the system to ensure the pollen grains remain suspended in the slurry.
- the mixing paddle along with the similar densities between water miscible carriers and the pollen grains prevent the pollen grains from settling out of the slurry mixture or rising to the top of the mixture.
- the slurry is mixed with the water in the system before being sprayed and is applied to the plants within a matter of seconds after mixing with water. For example, there may be a delay of about 5 seconds, about 10 seconds, about 20 seconds, about 30 seconds, about 40 seconds, about 50 seconds, or about 60 seconds between the time the slurry is mixed with water and the time that it is applied to plants.
- the test was conducted on almonds Prunus dulcis that are pollinated with the honeybees, Apis mellifera, at 1.75 hives per acre and nine frames of bees per hive.
- the pollen used in the experiment was N+.Pe.PD pollen obtained from Firman Pollen, e.g., Neplus Ultra (50% match Nonpareil, 50% match Monterey); Peerless (100% match Nonpareil, 50% match Monterey); Padre (100% match Nonpareil, 50% match Monterey).
- the sprayer used to distribute the pollen was provided by Electrostatic Spray Systems (ESS). Rows used in the experiment were 2376 feet long and had 140 trees spaced 17 feet apart down the row. Rows were 22 feet apart and one row was 1.200 acres.
- Rows 2-27 were used in the test (see Figure 3). Rows 1, 28, 29, 30 were excluded for being partial rows and on the perimeter.
- the field consists of Non-Pareil almond variety on the even rows and Monterey variety planted on the odd rows. On the Monterey rows every 10th tree was replaced with the Carmel variety of almonds. The field was located near Madera, California.
- Pollen was mixed into a slurry mixture made from a base slurry mixture comprising 100% glycerol, with future slurry mixtures to be tested later comprising 23% w/w glycerol and 77% w/w propylene glycol.
- the final slurry mixture contained between about 10% w/w and 25% w/w pollen grains diluted in the base slurry.
- the slurry mixture was pumped into a water stream that goes to spray nozzles where the liquid is electrostatically charged.
- the amount of water added to the slurry was based on the tractor speed. In the experimental design, tractor speed was really a pseudonym variable for amount of water added. The objective was to minimize water added during spray and to measure to see the effect. For example, a tractor travelling half the speed with same pollen delivery would require twice the volume of water added.
- Air pressurized by a turbo charger blew the electrostatically charged liquid out of the nozzle and to the trees.
- the pollen was attracted electrostatically to the tree branches and especially to the stigma of the flower where pollination was completed.
- the water spray had an additive to decrease osmotic pressure on the pollen.
- Sucrose was added at a 10% level to the water to decrease the osmotic pressure.
- the water spray rate was about 9 gallons per acre.
- the pump had an adjustable piston stroke so that the amount of pollen slurry delivered to the water stream going to the nozzles could be controlled. Due to the high viscosity of the fluid, the maximum flow rate was at less than a setting of 2.0 with 10.0 being the highest setting. The flow rate achieved by the various pump settings is shown in Figure 4. The relatively low flow rate required a reduction in the tractor speed during the test.
- the tractor pulling the spray equipment traveled at 4.3 miles per hour for all conditions except where the pollen was delivered at 20 g per pass. This was the highest delivery rate for the pollen and the tractor had to go down a gear to travel at 2.8 mph to maintain the necessary power take-off (PTO) shaft speed for the correct air pressure.
- PTO power take-off
- the pollen slurry was pumped at the required speed to give the desired delivery of pollen per acre.
- the experiment was set up as a 2 2 full factorial design with a control. There were three replicates for each of the four conditions. The control was limited to one row each of the Monterey and Non-Pareil. After eliminating the outside rows we divided the remaining rows for treatment as shown in TABLE 3. Pollination spray dates were on three consecutive days (for the three spays).
- TABLES 5 and 6 indicate the differences in yield between almond trees treated with 10 grams of pollen per acre and those treated with 40 grams of pollen per acre and those treated with two sprays versus those treated with three sprays, respectively.
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US201261730639P | 2012-11-28 | 2012-11-28 | |
US201361883969P | 2013-09-27 | 2013-09-27 | |
PCT/US2013/072500 WO2014085774A1 (en) | 2012-11-28 | 2013-11-29 | Pollen compositions and methods for distribution on flowering plants |
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CN (1) | CN104936436A (en) |
AU (1) | AU2013351965A1 (en) |
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US9943049B2 (en) | 2015-08-12 | 2018-04-17 | Dina Safreno | Vision-based pollination system |
CN109310060A (en) | 2016-05-22 | 2019-02-05 | 维德奥特有限公司 | For the composition of Weeds distribution, external member and method |
CN106106126A (en) * | 2016-06-29 | 2016-11-16 | 固镇县华丰蔬菜专业合作社 | A kind of apple tree artificial pollination method |
CN106106128A (en) * | 2016-06-30 | 2016-11-16 | 固镇县华丰农业有限公司 | A kind of artificial pollination method of Fructus actinidiae chinensis |
CN106069727A (en) * | 2016-06-30 | 2016-11-09 | 固镇县华丰农业有限公司 | A kind of artificial pollination method for pear tree |
GB2568007A (en) | 2016-09-08 | 2019-05-01 | Walmart Apollo Llc | Systems and methods for dispensing an insecticide via unmanned vehicles to defend a crop-containing area against pests |
CN106258943B (en) * | 2016-09-29 | 2018-03-16 | 浙江大学 | Backpack breeding of hybrid rice pollination machine and its method |
CN107114232B (en) * | 2017-03-21 | 2023-06-23 | 浙江喜盈天农业开发有限公司 | Pollen solution sprayer |
CN107312741A (en) * | 2017-06-07 | 2017-11-03 | 常州瑞坦商贸有限公司 | A kind of preparation method for red fuji apple pollination pollen suspension |
US20200260675A1 (en) * | 2017-09-07 | 2020-08-20 | Edete Precision Technologies For Agriculture Ltd. | System for dry artificial pollination of cultivated trees or shrubs by insect-borne pollen and method of doing the same |
PL235683B1 (en) * | 2017-11-29 | 2020-10-05 | B Droix Spolka Z Ograniczona Odpowiedzialnoscia | Mechanism for rapid mechanical pollination of plants |
WO2019215581A1 (en) | 2018-05-06 | 2019-11-14 | Weedout Ltd. | Methods of controlling weed of the amaranth genus |
US11304355B2 (en) | 2018-05-06 | 2022-04-19 | Weedout Ltd. | Methods and systems for reducing fitness of weed |
CN109220775A (en) * | 2018-09-18 | 2019-01-18 | 吴江市黎里心怡农业科技有限公司 | A kind of application of the sudden and violent powder promotor of Cuiguan pear |
US11957097B2 (en) | 2018-10-25 | 2024-04-16 | Weedout Ltd. | Methods of inhibiting growth of weeds |
CN109588305B (en) * | 2018-12-20 | 2021-07-20 | 江苏大学 | Pneumatic slight-elevation greenhouse strawberry pollination robot and implementation method thereof |
BR112022005239A2 (en) * | 2019-10-01 | 2022-06-14 | Monsanto Technology Llc | Cross-pollination via liquid-mediated pollen transfer to closed stigmas of flowers from recipient plants |
CN110583473A (en) * | 2019-10-10 | 2019-12-20 | 陕西汉唐农业标准化研究院有限公司 | Wisdom agricultural is with trunk plant pollination device |
CL2020003166A1 (en) * | 2020-12-04 | 2021-04-09 | Nicolas Ivan Tironi Gallardo | Procedure and composition for the pollination of the avocado persea americana mill. |
CN112535151B (en) * | 2020-12-08 | 2023-04-25 | 吉林省农业科学院 | Liquid composition for attracting bees, solid bee attractant and preparation method thereof |
WO2023130002A2 (en) * | 2022-01-03 | 2023-07-06 | Inari Agriculture Technology, Inc. | Pollen-mediated industrial trait delivery in hybrid f2 progeny seed |
CN115443906A (en) * | 2022-10-18 | 2022-12-09 | 西北农林科技大学 | Accurate pollination robot of kiwi fruit based on visual perception and double-flow spraying |
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US6309440B1 (en) * | 1998-08-25 | 2001-10-30 | Thomas T. Yamashita | Method and composition for promoting and controlling growth of plants |
US5066594A (en) * | 1989-05-09 | 1991-11-19 | Dna Plant Technology | Method for the manipulation of pollen in plants |
DE69223462T2 (en) * | 1991-02-01 | 1998-04-02 | Roussel Uclaf | DELIVERY METHOD AND DEVICE |
RU2036706C1 (en) * | 1993-04-29 | 1995-06-09 | Товарищество с ограниченной ответственностью Научно-технический центр "Яха" | Gas-and-liquid generator |
JP5143579B2 (en) * | 2008-01-30 | 2013-02-13 | 株式会社ミズホケミカル | Powder composition for solution pollination |
JP5235164B2 (en) * | 2009-05-29 | 2013-07-10 | エーザイ生科研株式会社 | Pollination agent, aqueous pollen agent, pollen aqueous dispersant and pollination method |
CN102067808A (en) * | 2009-11-23 | 2011-05-25 | 牛俊武 | Apple pollens capable of being pollinated through spraying liquid and preparation method thereof |
CN101743875A (en) * | 2009-12-29 | 2010-06-23 | 新疆生产建设兵团农二师农业科学研究所 | Method for preparing solution of fruit tree pollen and performing pollination |
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MX2015006626A (en) | 2016-11-25 |
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