KR19980019124A - Application method of liquid pesticide for paddy rice - Google Patents

Abstract

It provides a simple and less costly way to easily spread the desired amount of liquid pesticide at the site for discussion.

A liquid pesticide for paddy rice is sprayed on the rice paddies under fresh water directly from the nozzle 9 of the accumulator spreader 1. The nozzle 9 has a straight hole and a tip diameter of 0.5 to 3 mm is used. Filling the liquid pesticide in the container (1), by moving the handle (3) of the piston shaft of the pimp (2) up and down to pressurize and accumulate the inside of the container, and pulls the container (7) of the container from the paddy field with this container As a result, liquid pesticides are sprayed from the nozzles 9 into a neat liquid stream at the place of discussion.

Description

How to Spray Liquid Pesticides for Rice

The present invention relates to a novel method of spraying liquid pesticides for rice.

Conventionally, as a method of spraying pesticides on paddy fields, solid granules spray is mainly used. As a method of spraying liquid pesticides, a method of spraying a thick emulsion directly from a container onto a paddy field with a bare hand and a chemical container The method of spraying on a rice field with the water gun type | mold spreader settled in Japan (Japanese Unexamined-Japanese-Patent No. 6-54638) etc. is mentioned. In the former method, the rice paddies are sprayed into the rice paddies. Paddy fields under fresh water are difficult to walk because the ground is fragile. And the latter method is sprayed on the rice paddy road, so less power than the method of entering and spraying the rice paddies. However, this method is a method of spraying by repeating the operation of pulling the finger forward by hanging a finger on the trigger portion of the water gun type sprayer, and thus has the drawback that the hand and the hand are tired by the repetition of this operation. In addition, the amount and distance of the chemical liquid sprayed from the nozzle are increased depending on the state of pulling the trigger. Moreover, when the trigger is pulled, the distance of the first chemical liquid that protrudes from the nozzle and the chemical liquid that protrudes last Because of the extremely different reach of the chemicals (the first liquid that protrudes from the nozzle reaches the farthest distance and then the shortest reach), it is difficult to apply the desired amount to the place of discussion.

The present invention aims to solve the above-mentioned drawbacks of the prior art, and to provide a simple and inexpensive method capable of easily spraying a desired amount of liquid pesticide at a place of discussion.

1 is an explanatory view of an example of a pressure sprayer used in the present invention.

2 is an explanatory view of a method of pressurizing a container by filling a chemical liquid in the accumulator sprayer of FIG. 1;

3 is an explanatory view of another example of a pressure sprayer used in the present invention.

4 is an explanatory diagram of various exchange nozzles.

* Explanation of symbols for main parts of the drawings

1, 21: container body of a pressure spray container

2,24: Guelph

3,22: steering wheel

4,26: Safety valve

5: Gauge rod of safety valve

6: lever valve

7,23: Lever

8: Nozzle Pipe

9,25: Nozzle

10,27: Highest memory location of liquid

11: Funnel type inlet

12: Hoose

28: deep tube

The present invention is a method in which a liquid pesticide for paddy rice is sprayed on a paddy field under fresh water directly from a nozzle of a pressure spray container.

A pressure spray container is a spray container that can pressurize and accumulate a container after filling a liquid pesticide, and injects a liquid pesticide in the container from the nozzle by opening a passage to the nozzle during spraying. It means of. And spraying directly means spraying to a place for discussion purposes as a square chemical liquid from a nozzle.

In the pressure spraying container, simply press the lever (press the lever to open the passage to the nozzle), and the chemical liquid is continuously sprayed from the nozzle, which makes the hand or arm tired compared to the water sprayer. It's less energy than nothing. In addition, when the liquid pesticide is sprayed directly using a pressure spray container, the chemical liquid sprayed from the nozzle reaches a far distance compared to the water gun type sprayer, and thus it is possible to spray on a larger area of rice paddies. Moreover, in the case of the accumulator spraying container, there is no problem that the reach of the chemical liquid that protrudes first from the nozzle is different from the reach of the chemical liquid that protrudes last, as in the case of a water gun type sprayer. Since the desired amount of pesticides can be easily sprayed, it is possible to spray liquid pesticides with uniform and better efficiency in paddy fields in a shorter working time.

Since the pressure storage spray container is preferably lightweight, it is preferably made of plastic, and its main part needs to be made of a resin having high strength, durability, and chemical resistance. The volume of the container is preferably about 100 to 20000 ml, and more preferably about 500 to 5000 ml.

In the pressure spray container of the present invention, it is particularly important to use a nozzle that can directly spray liquid pesticides for rice fields. It is not desirable to flow liquid pesticides for rice fields. The structure of the nozzle should just be a structure which can be sprayed directly, and it is most preferable to have a straight hole although it is limited in particular.

The tip diameter of the nozzle affects the amount, speed, and the reach of the chemical liquids injected from the nozzle, and is generally about 0.5 to 3 mm, preferably about 1 to 2 mm. Therefore, it is preferable that the nozzle of the pressure spray container has a structure in which nozzles of various tip diameters can be replaced or that the nozzle diameter can be arbitrarily changed within such a range.

The accumulator spray container is generally of a configuration in which a spout portion of this container is provided with a pump. In the case of such a pressure spray container, the pump is separated, the chemical liquid is put into the container, and the pump is installed to operate the pimp to pressurize the container. Although the pressure to pressurize depends on the strength of a container etc., it is preferable to use the container which can pressurize to about 5 kg / cm <2>. And it is desirable to install a safety valve in the accumulator spray container to avoid pressurization above dangerous pressure.

After pressurizing the container, the lever is opened to open the passage to the nozzle, and the chemical liquid is strongly injected straight out of the nozzle. The chemical liquid flow from the nozzle is a straight-line flow with a high speed at first, and becomes slightly wider when flying a certain distance, but reaches a target place as a substantially square chemical liquid. Therefore, it is possible to easily spray the required amount of chemical liquid to the target place.

In the pressure spraying container used in the present invention, the chemical liquid flow can be easily sprayed with a desired amount of chemical liquid at any spraying point within the range (distance from the nozzle) by selecting the pressure in the container and the tip diameter of the nozzle. have.

Examples of liquid pesticides for paddy rice include herbicides, scavengers, and fungicides, and herbicides are particularly preferred. Moreover, sulfonylurea herbicides are one of the most suitable pesticides with abundant diffusivity. The sulfonylurea herbicide used for rice production is pyrazolesulfuronethyl [ethyl = 5- (4,6-dimethoxypyrimidine-]. 2-ylcarbamoylsulfamoyl) -1-methylpyrazole-4-carboxylate], bensulfuronmethyl [methyl = α- (4,6-dimethoxypyrimidin-2-ylcarmoylsulfamoyl) -o-toluato]. Imazosulfuron [1- (2-chloroimidazo [1,2-α] pyridin-3-ylsulfonyl) -3- (4,6-dimethoxypyrimidin-2-yl) urea '', halosulfuron Methyl, azimsulfuron, ethoxysulfuron, cynosulfuron, diclosulpamuron and the like are known.

These sulfonylurea herbicides may contain one or two or more pesticides and may contain other herbicides.

It is preferable that these pesticides are prepared so that they may spread to rice fields. As the form of the liquid pesticide for rice paddies in the container, for example, an oily form, a liquid form, a hydrate or a granulated hydrate, and a form in which the water is suspended are preferable. Among these, the granulated hydrating agent is suspended in water, which is a liquid pesticide most suitable for the spraying method of the present invention due to the reduction of manpower derived from hard and compound, safety for agricultural workers, low viscosity and the like. These liquid pesticides are prepared so that the spraying amount may be about 100 to 1000 ml per 10 ars.

The spraying order of the liquid pesticides is not particularly limited, but for example, after a predetermined amount of water is injected into the container, a predetermined amount of hydrated black granule hydrating agent is added or suspended, or a predetermined amount of emulsion or liquid is placed in the container. Alternatively, after layering the flooring agent, the pump is operated to pressurize air into the container and to accumulate it. With this accumulator spraying container, the rice paddy is sprayed on the paddy field under the fresh water from the nozzle of the container by pressing the lever of the container from the appropriate plural positions of the paddy field. If the pressure in the container drops during the spreading, the pump is pressed again to pressurize the container. As a form of spraying on a rice paddy, appropriate forms, such as a photographic frame shape, a stripe shape, a grid | lattice form, or a spot black, can be employ | adopted according to the area shape of a rice paddy. In the case of the accumulator type spraying container, since the reach of the direct flow is far, the rice field with a small area can be sprayed in only one place of rice field.

1 and 2 show an example of a pressure spray container used in the method of the present invention. 1 to 1 is the container body of the pressure spray container, 2 is the pump, 3 is the handle of the piston shaft (it also functions as a handle with the container), 4 is a safety valve, 5 is a gauge rod of the safety valve, 6 A lever lever, 7 a lever, 8 a nozzle pipe, 9 a nozzle, 10 a maximum memory position of the liquid volume, 11 a funnel inlet of the vessel, and 12 a hose. The main part of the pressure spray container is made of chemically resistant high strength engineering plastic. Although this pressure spray container is of the type which sprays a container by hand, you may comprise the float which spreads over a shoulder as needed. The capacity of the container is about 1 to 5 liters. The side wall of the container main body 1 is comprised from transparent or translucent resin so that the liquid amount in a container can be seen. The pimp 2 is configured to press the container in the spout of the container main body 1 by screwing it or connecting it to a sealing bed, and pressurizes the container by holding the handle 3 and operating the piston shaft of the pump 2 up and down. .

As shown in Fig. 2, the pump 2 is separated out from the container to layer the chemical liquid in the container. 10 indicates the highest memory position of the amount of chemical liquid that can be filled. For example, in the case of a 2-liter spray container, the position of the liquid surface when the 2-liter chemical liquid is filled into the container. Filling the chemical liquid above the highest memory location reduces the volume of the air chamber in the vessel above the liquid level, resulting in shorter spreading time. After filling the chemical liquid, the pump 2 is installed and operated to pressurize the container. The safety valve 4 is provided so that the pressure in a container may not be above a certain pressure, for example, about 5 kg / cm 2 or more. As shown in FIG. 2, when the container is pressurized with a pump, the gauge rod 5 of the safety valve 4 comes out gradually, and the pressure opens about 5 kg / cm <2>, and the pressure does not increase any more.

After pressurizing the inside of the container, the lever-type valve 6 is held by hand, and the lever 7 is pulled in the B direction to open the valve port, which is then injected from the nozzle 9 through the nozzle pipe 8 of the chemical liquid in the container. do. The tip diameter of the nozzle is about 1 to 1.3 mm. While the lever 7 is being pulled in the B direction, the chemical liquid is injected from the nozzle 9, and the injection stops when it returns to the C position. Therefore, by pulling the lever 7 toward the target place where the nozzle 9 is discussed, a desired amount of chemical liquid can be sprayed directly onto the target place. Then, when the lever is raised to the A position, even when a finger is removed from the lever, it is in a continuous injection state. In this type of pressure spraying container, a desired amount of chemical liquid can be directly sprayed at any point within a range of 0.5 to 15 m from the nozzle.

The pressurized spray container shown in Figure 3 is of a type that can be sprayed operation by holding the handle in hand and pressing the lever down with a thumb, it is of a more convenient type than that of the type shown in FIG. In FIG. 3, 21 is the vessel body, 22 is the handle, 23 is the lever, 24 is the pump, 25 is the nozzle, 26 is the safety valve, 27 is the maximum memory position of the liquid volume, 28 is the deep tube, 29 is the reinforcement of the container. Represent each strut. The main part of the pressure spray container is composed of chemically resistant high strength engineering plastic, similar to the pressure spray container shown in FIG. 1. The capacity of the container is about 0.5 to 1.5 liters.

The pump 24 is connected to the spout of the container main body 21 in a sealed state by screwing, and is configured to pressurize the container by operating the pump up and down. The pump 24 is separated out of the container and the chemical liquid is filled into the container. After filling the chemical liquid and installing the pump 24 in the container and pressurizing the container with the pump, the gauge rod of the safety valve 25 slowly comes out to open the valve at a pressure of about 5kg / ㎠ so that the pressure does not increase any more. It is. After pressurizing the container, the handle 22 is held by hand and the lever 23 is pushed down with the thumb. The passage to the nozzle 25 is opened, and the chemical liquid is discharged through the dip tube 28. 25). The nozzle 25 is a short nozzle having a length of about 5 cm as shown in Fig. 4A, and has a straight hole and a tip diameter of 1 to 2 mm.

The nozzle 25 is interchangeable and interchangeable with a nozzle having various tip diameters. The nozzle 25 may be replaced by a long nozzle shown in FIG. 4B or a two-stage long nozzle capable of lengthening as shown in FIG.

Even in this type of pressure spray container, the reach of the chemical liquid is 10 m or more. Therefore, the desired amount of the chemical liquid can be applied directly to any point within a range of 0.5 to 10 m from the nozzle.

(Example)

Example 1

Rice was transplanted to four paddy fields in a 30a (30 × 100m) section by a regular method and the water depth was maintained at 4 cm. The following agents were sprayed 7 days after transplantation.

Commercially available imazosulfuron pyributycarb dimuron floor [brand name Awade poloable, the following awadra; pyributicarb: 0-3-tert- butylphenyl; 6-methoxy-2-pyri Dill

(Methyl) thiocarbamate; Dimuron: 1-((alpha), (alpha)-dimethylbenzyl) -3- (paratril) clasp, benzulfuron methyl pyriburylcarb dimuron float Calshotra]], Bensulfuronmethyl, Bennychlor, Dimuron floor [trade name Kusametsu floor, referred to as Kusamets; 1500 ml of each stock solution of quinylchlor: 2-chloro-N- (3-methoxy-2-tenyl) -2 ', 6'-dimethylacetoanilide] was prepared. Then, 180 g of pyrazosulfuronethylkachetrol granule hydrate (test name NC-355 granule hydrate, hereinafter referred to as NC-355) was dissolved in water to prepare a solution of 1500 ml. These liquid pesticides were filled in the container (2000 ml volume) of the pressure sprayer shown in FIG. 1, and the pump was operated to pressurize and accumulate until the pressure in the container became about 5 kg / cm 2.

With this accumulator spreader, spray the medicine about 6m from the paddy field by shaking the nozzle slightly horizontally at a rate (1.5 ~ 2m interval) once every 3 to 4 steps on the paddy field. Repeating this operation, the ricefields were rounded, and a total of 1500ml of chemicals were sprayed in a frame at a point about 6m from the ricefields of the 30 × 100m section. As a control of each drug, the prescribed amount of this drug (50 ml / a) was uniformly sprayed at 4 m 2 (2 × 2 m). EFFECT: The weakness was judged after 2 weeks of spraying and 4 weeks after spraying. The judgment criteria were 0: no influence-5: six stages of complete examination, and the average of the irradiation spots of each five places was computed.

[Kingjong Overview]

7 days after paddy field transplant

Varieties Koshihikari (2.5 season)

Weed occurrence situation at the time of processing

Fields: 0.5 Leaf, Water Wing Bee: Early inoculation, Tadpole High-velocity: Early inoculation, Beech Swine: Non-occurring, Peeling: Non-occurring

The results are shown in Table 1.

rice plant Field Water pinnacle Tadpole You're spoiled Peel Garden grass Award 0 4.8 5 4.5 4.8 5 4.8 Award (control) 0 4.8 5 4.3 4.8 5 4.8 Karlshaw 0 4.8 5 5 4.8 5 4.8 Kalshoort (Contrast) 0 4.8 5 5 4.8 5 4.8 Kusametz 0 5 5 5 4.8 5 4.8 Kusametsu (Contrast) 0 5 5 5 4.8 5 4.8 NC-355 0 5 5 5 5 5 4.8 NC-355 (control) 0 5 5 5 5 5 4.8

Example 2

Rice was transplanted to a single field of 10a (25 x 40m) paddy in a regular manner and the water depth was maintained at 4 cm. The following agents were sprayed 7 days after transplantation.

Of commercially available ethoxyproxxa-after-trade name (trade name Trebon-after, hereafter trebon-xa-fur; toeprox: 2- (4-ethoxyphenyl) -2-methylpropyl = 3-phenoxybenzyl = ether] 500 ml of the stock solution was prepared. This liquid pesticide was filled in the container (1000 ml volume) of the pressure sprayer shown in FIG. 3, and the pump was operated to pressurize and accumulate until the pressure in the container became about 5 kg / cm 2. Hold the pressure spreader in hand and spray the medicine about 6m from the paddy field by shaking the pressure spreader slightly in the horizontal direction at a rate (1.5-2m interval) once every 3-4 steps in the paddy field. Repeating this operation, the ricefields were rounded, and 500 ml of chemicals in total were sprayed in the shape of a frame at a point about 6m from the ricefields of the 25 × 40m section. As a control of each drug, the prescribed amount of this drug (50 ml / a) was uniformly sprayed at 4 m 2 (2 × 2 m).

Weak judgment was made after 1 week of spraying.

Judgment criteria are effective: adult larvae, larvae, leafy leaves

Weak: 0: No effect-5: Six stages of complete examination, each 40-week survey

[Kingjong Overview]

7 days after paddy field transplant

Varieties Akinohikari (2.2 season)

Target pest rice weevil

Spraying month May 22

The results are shown in Table 2.

rice plant Adult dietary rate 6/8 larva Trebon 0 1 0.3% 12 Trebon (Contrast) 0 1 0.2% 14 No treatment 0 32 82% 223

Example 3

Rice is transplanted into a single field of 10a (25 x 40m) paddy by the regular method and the water depth is 4

The following drugs were sprayed 35 days after transplantation.

500 g of commercially available furutoranyl hydrating agent (trade name Montcat hydrating agent, hereinafter referred to as MONCATTRA; furto ranyl: α, α, α-trifluluo-3'-isopropoxy-o-toluanilide) in 10000 ml of water What was prepared for was prepared. This liquid pesticide (2000 ml) was charged into a vessel (2000 ml volume) of the pressure spreading machine shown in Fig. 1, and the pump was operated to pressurize and accumulate until the pressure in the vessel became about 5 kg / cm 2. With this accumulator spreader, the medicine is sprayed about 6 m from the paddy field by shaking the nozzle slightly horizontally at a rate (1.5-2 m interval) once every 3 to 4 steps on the paddy field. Repeating this operation, the paddy field was circumscribed, and a total of 10000 ml of chemicals were sprayed in a frame at a point of about 6 m from the paddy field in the 25 × 40 m section. As a control of each drug, the prescribed amount of this drug (2000 times 10naa) was uniformly sprayed at 4 m 2 (2 × 2 m). EFFECT: The weakness was determined after 4 weeks of spraying.

Judgment standard is effective: Control price of control processing calculates

Weak: 0: No effect-5: Six stages of complete examination were taken.

[Kingjong Overview]

Pharmaceutical treatment paddy field 35 after

Varieties Koshihikari (2.5 season)

Outbreak disease rice paddy disease

The results are shown in Table 3.

rice plant Control Monkat 0 96 Monkat (control) 0 95

Example 4

Rice was transplanted into two fields of 30a (30 × 100m) paddy by the regular method, and the water depth was maintained at 4 cm. The following agents were sprayed 7 days after transplantation.

180 g of the bensulfuron methyl canthrol granule hydrating agent prepared in Formulation Example 1 below and 180 g of imazosulfuron-cachetrol granule hydrating agent prepared in Formulation Example 2 below were prepared in the same manner as in NC-355 in Example 1. Sprayed on the rice fields. And as in Example 1, the two formulations were uniformly sprayed as a control.

Effects and weaknesses were determined in the same manner and in the same manner as in Example 1, and the results are shown in Table 4.

rice plant Field Water pinnacle Tadpole You're spoiled Comb Garden grass Bensulfuronmethyl Casserole Granule Hydrating 0 5 5 5 4.5 5 4.8 Bensulfuronmethyl Casserole Granule Hydrating (Control) 0 5 5 5 4.5 5 4.8 Forehead surgery Casserole Granule Hydrating 0 5 5 5 4.7 5 4.8 Forehead surgery Casserole Granule Hydrating (Control) 0 5 5 5 4.7 5 4.8

(Example)

Preparation Example 1 Bensulfuron Methyl Canthrol Granule Hydrating Agent

8.7 parts of bensulfuronmethyl, 50 parts of capestrol, 7 parts of lignin sulfonic acid soda, 10 parts of naphthalenesulfonic acid formalin condensate, 2 parts of polyoxyethylene alkylphenylether sulfate ester salt, 20 parts of ammonium sulfate, and 2.3 parts of kaolin clover are mixed To a single track mill (Seishin Corporation). Subsequently, a predetermined amount of granulated water was added, kneaded in an all-purpose mixer (Dalton Co., Ltd.), and assembled into a basket-shaped jar (manufactured by BR-2000 Powder Co., Ltd.) equipped with a 0.5-kV screen. After drying at 50 t for 2 hours, the granular hydrate of the title was obtained.

Preparation Example 2 Imazosulfuron / Cyastrostll Granule Hydration

In the same manner as in Formulation Example 1, 8.7 parts of bensulfuronmethyl was replaced with 10.5 parts of imazosulfuron, 20 parts of ammonium sulfate were changed to 20.5 parts of ammonium sulfate, and 2.3 parts of kaolin tlay were changed to itu, thereby obtaining an imazosulfuron-cachetrol granule hydrate.

In the conventional water gun type spreader method, it is difficult to spread a desired amount of liquid pesticide in a place for discussion purposes, but according to the present invention, the desired amount of liquid pesticide can be easily sprayed in a rice field at a place for discussion purposes. Pesticides can be spread on the rice fields with uniformly good efficiency in a shorter working time.

In addition, when the liquid pesticide is sprayed directly using a pressure spray container, the pesticide sprayed from the nozzle reaches a farther distance than the water gun type sprayer, and thus it is possible to spray a wider rice field.

In addition, in the method of the present invention by the pressure spray container, the liquid is sprayed continuously from the nozzle simply by pressing the lever, and thus the power is saved compared to the spray gun sprayer sprayed by the repetition of the triggering operation.

Claims (9)

A method of spraying paddy liquid pesticides directly into a paddy field under fresh water from a nozzle of a pressure spray container. The method according to claim 1, wherein the pressure spray container has a volume of 100 to 20000 ml. The method according to claim 1, wherein the liquid pesticide for rice paddy is in the form of a suspending agent in water or granules, in the form of a floor or an emulsion. The method according to claim 1, wherein the liquid pesticide for rice paddy is herbicide. The method according to claim 1, wherein the distance from the nozzle of the accumulator spray container to the spraying landing point of the liquid pesticide for paddy rice is 0.5 to 15 m. The method according to any one of claims 1 to 5, wherein the liquid pesticide for rice paddies is in the form of suspended granule hydrating agent in water. The method according to any one of claims 1 to 6, wherein the agrochemical for rice paddies is a pesticide containing a sulfonylurea herbicide. The method according to any one of claims 1 to 6, wherein the rice pesticide is a pesticide containing pyrazosulfuronethyl. The method according to any one of claims 1 to 6, wherein the rice pesticide is a pesticide containing bensulfuronmethyl, imazosulfuron, halosulfuronmethyl, azisulfuron, cynosulfuron, or cyclosulfamuron.