CN110651795A - Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew - Google Patents
Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew Download PDFInfo
- Publication number
- CN110651795A CN110651795A CN201910903927.9A CN201910903927A CN110651795A CN 110651795 A CN110651795 A CN 110651795A CN 201910903927 A CN201910903927 A CN 201910903927A CN 110651795 A CN110651795 A CN 110651795A
- Authority
- CN
- China
- Prior art keywords
- powdery mildew
- sulfur
- chitosan oligosaccharide
- pesticide composition
- weight
- 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.)
- Pending
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 241000221785 Erysiphales Species 0.000 title claims abstract description 64
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 62
- 239000011593 sulfur Substances 0.000 title claims abstract description 62
- RQFQJYYMBWVMQG-IXDPLRRUSA-N chitotriose Chemical compound O[C@@H]1[C@@H](N)[C@H](O)O[C@H](CO)[C@H]1O[C@H]1[C@H](N)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)N)[C@@H](CO)O1 RQFQJYYMBWVMQG-IXDPLRRUSA-N 0.000 title claims abstract description 58
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000575 pesticide Substances 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 37
- 239000004480 active ingredient Substances 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 4
- 239000000375 suspending agent Substances 0.000 claims description 16
- 230000002265 prevention Effects 0.000 claims description 15
- 235000021307 Triticum Nutrition 0.000 claims description 13
- 241000219112 Cucumis Species 0.000 claims description 12
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 claims description 12
- 240000001980 Cucurbita pepo Species 0.000 claims description 12
- 238000011161 development Methods 0.000 claims description 12
- 235000009854 Cucurbita moschata Nutrition 0.000 claims description 9
- 201000010099 disease Diseases 0.000 claims description 9
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 9
- 235000000832 Ayote Nutrition 0.000 claims description 7
- 235000012828 Citrullus lanatus var citroides Nutrition 0.000 claims description 7
- 235000009804 Cucurbita pepo subsp pepo Nutrition 0.000 claims description 7
- 240000009088 Fragaria x ananassa Species 0.000 claims description 7
- 244000302512 Momordica charantia Species 0.000 claims description 7
- 235000009811 Momordica charantia Nutrition 0.000 claims description 7
- 239000005864 Sulphur Substances 0.000 claims description 7
- 235000015136 pumpkin Nutrition 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 244000036905 Benincasa cerifera Species 0.000 claims description 6
- 235000011274 Benincasa cerifera Nutrition 0.000 claims description 6
- 235000016623 Fragaria vesca Nutrition 0.000 claims description 6
- 235000011363 Fragaria x ananassa Nutrition 0.000 claims description 6
- 235000009812 Momordica cochinchinensis Nutrition 0.000 claims description 6
- 235000018365 Momordica dioica Nutrition 0.000 claims description 6
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims description 6
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 5
- 235000002555 Citrus medica var sarcodactylis Nutrition 0.000 claims description 4
- 240000007126 Citrus medica var. sarcodactylis Species 0.000 claims description 4
- 240000008067 Cucumis sativus Species 0.000 claims description 4
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 claims description 4
- 244000303847 Lagenaria vulgaris Species 0.000 claims description 4
- 235000009797 Lagenaria vulgaris Nutrition 0.000 claims description 4
- 235000008326 Trichosanthes anguina Nutrition 0.000 claims description 4
- 244000078912 Trichosanthes cucumerina Species 0.000 claims description 4
- 235000009754 Vitis X bourquina Nutrition 0.000 claims description 4
- 235000012333 Vitis X labruscana Nutrition 0.000 claims description 4
- 240000006365 Vitis vinifera Species 0.000 claims description 4
- 235000014787 Vitis vinifera Nutrition 0.000 claims description 4
- 235000015001 Cucumis melo var inodorus Nutrition 0.000 claims description 3
- 230000000361 pesticidal effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 244000241235 Citrullus lanatus Species 0.000 claims 2
- 235000003956 Luffa Nutrition 0.000 claims 2
- 244000050983 Luffa operculata Species 0.000 claims 2
- 244000098338 Triticum aestivum Species 0.000 claims 2
- 229920001542 oligosaccharide Polymers 0.000 claims 2
- 235000020354 squash Nutrition 0.000 claims 2
- 241000219094 Vitaceae Species 0.000 claims 1
- 235000021021 grapes Nutrition 0.000 claims 1
- 235000021012 strawberries Nutrition 0.000 claims 1
- 238000002360 preparation method Methods 0.000 description 23
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 15
- 239000003814 drug Substances 0.000 description 13
- 241000209140 Triticum Species 0.000 description 11
- 229940079593 drug Drugs 0.000 description 11
- 238000011282 treatment Methods 0.000 description 11
- -1 polyoxyethylene Polymers 0.000 description 10
- 229940051841 polyoxyethylene ether Drugs 0.000 description 10
- 229920000056 polyoxyethylene ether Polymers 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 241000219109 Citrullus Species 0.000 description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- 150000002191 fatty alcohols Chemical class 0.000 description 5
- 239000004006 olive oil Substances 0.000 description 5
- 235000008390 olive oil Nutrition 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 241000510928 Erysiphe necator Species 0.000 description 2
- 231100000674 Phytotoxicity Toxicity 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 1
- 239000005842 Thiophanate-methyl Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000004546 suspension concentrate Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- QGHREAKMXXNCOA-UHFFFAOYSA-N thiophanate-methyl Chemical group COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC QGHREAKMXXNCOA-UHFFFAOYSA-N 0.000 description 1
- FFSJPOPLSWBGQY-UHFFFAOYSA-N triazol-4-one Chemical compound O=C1C=NN=N1 FFSJPOPLSWBGQY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/02—Sulfur; Selenium; Tellurium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to an application and a method for preventing and treating powdery mildew by a composition containing chitosan oligosaccharide and sulfur, wherein the application is that the quick-acting performance of preventing and treating the powdery mildew of crops is improved by a pesticide composition, the quick-acting performance is that the time for achieving the same preventing and treating effect is shortened by more than 30 percent, the active ingredients in the pesticide composition are the chitosan oligosaccharide and the sulfur, and the weight ratio of the chitosan oligosaccharide to the sulfur is 1: 20-60. The invention discovers that the composition of chitosan oligosaccharide and sulfur in a specific ratio can effectively and quickly prevent and treat powdery mildew of crops, and the quick action is very good.
Description
Technical Field
The invention belongs to the field of plant protection, and particularly relates to prevention and control of powdery mildew of plants, in particular to application and a method of a pesticide composition containing chitosan oligosaccharide and sulfur in rapid prevention and control of powdery mildew.
Background
The application research of the composition of chitosan oligosaccharide and sulfur is weak, and the plant protection value of the composition is not clearly researched. Especially, the research on the prevention and treatment of powdery mildew is very little.
At present, more medicaments for preventing and treating powdery mildew exist, wherein sulfur is a commonly used medicament, for example, CN1402985A discloses a sulfur colloid, which can achieve good prevention and treatment effects 1 day after more than 500ppm of spraying, the inhibition time of powdery mildew spores can last for 7-10 days, the yield is increased by 30%, and compared with triazolone, thiophanate methyl and tefuraline, the fruit has no pesticide residue. Although the patent discloses that the sulfur can prevent and treat powdery mildew, the short time is unclear if the expected prevention effect can be achieved, and the inventor of the invention applies the data analysis of the sulfur for preventing and treating the powdery mildew for a long time, so that the high prevention effect cannot be achieved in a short time, the effect can be achieved in a short time, and the high efficiency cannot be achieved.
In the process of long-term application of sulfur to control powdery mildew, the inventor of the invention finds that sulfur is easy to cause phytotoxicity, especially the problem of leaf burning, and also aims to achieve the purpose of quickly controlling powdery mildew, the problem cannot be solved by a single sulfur agent, the addition amount of chitosan oligosaccharide is very critical, and the purpose of quickly controlling powdery mildew is difficult to achieve under the condition of too much or too little chitosan oligosaccharide.
Disclosure of Invention
In order to solve the technical problems, the invention provides an application of a pesticide composition containing chitosan oligosaccharide and sulfur, which is characterized in that the application is that the pesticide composition improves the quick-acting property for preventing and treating powdery mildew of crops, the quick-acting property is that the time for achieving the same prevention effect is shortened by more than 30%, the active ingredients in the pesticide composition are the chitosan oligosaccharide and the sulfur, and the weight ratio of the chitosan oligosaccharide to the sulfur is 1: 20-60.
Preferably, in the application, when the pesticide composition is used for preventing and controlling powdery mildew of crops, the application concentration of the active ingredients is 500-2000 ppm.
Preferably, in the above use, the quick action is a 40% or more reduction in time to achieve the same control effect.
Preferably, in the application, the sum of the weight of the chitosan oligosaccharide and the sulfur in the pesticide composition accounts for 20-80% of the weight of the pesticide composition.
Wherein the crop is wheat, melon, strawberry or grape.
Preferably, in the above uses, the melons are pumpkin, cucumber, watermelon, melon, pumpkin, winter melon, white gourd, towel gourd, balsam pear, bottle gourd, finger citron, snake gourd, etc.
The improvement of the quick-acting property means that the time for preventing and treating powdery mildew to achieve the expected effect is shorter than the time for preventing and treating the powdery mildew by the conventional method, and particularly, the time for the pesticide composition to achieve the acceptable prevention and treatment effect is shortened compared with the time for preventing and treating the powdery mildew by using a sulfur single agent.
Preferably, in the above use, the formulation of the pesticidal composition is a suspension concentrate.
The invention also provides a method for controlling crop powdery mildew by applying the pesticide composition containing chitosan oligosaccharide and sulfur, which comprises the following steps: the pesticide composition containing the chitosan oligosaccharide and the sulfur is applied at the early stage of the powdery mildew of crops or the development stage of the powdery mildew, the total concentration of the chitosan oligosaccharide and the sulfur as active ingredients is adjusted to 500-2000ppm for spraying, the spraying frequency is 1-3 times, preferably 1-2 times, when the spraying frequency is 2 times or 3 times, the interval time between the two applications is 5-10 days, the active ingredients in the pesticide composition are the chitosan oligosaccharide and the sulfur, and the weight ratio of the chitosan oligosaccharide to the sulfur is 1: 20-60.
Preferably, in the method, the early stage of crop powdery mildew disease occurrence refers to that the powdery mildew disease index is less than or equal to 15%, and the pesticide composition is applied for 1 time at the early stage of crop powdery mildew disease occurrence.
Preferably, in the method, the powdery mildew development period refers to a powdery mildew disease index of more than 15% and less than or equal to 35%, and the pesticide composition is applied for 2 times in the crop powdery mildew development period.
Preferably, in the application, the sum of the weight of the chitosan oligosaccharide and the sulfur in the pesticide composition accounts for 20-80% of the weight of the pesticide composition.
Preferably, in the above method, the crop is wheat, melon, strawberry or grape.
Preferably, in the above uses, the melons are pumpkin, cucumber, watermelon, melon, pumpkin, winter melon, white gourd, towel gourd, balsam pear, bottle gourd, finger citron, snake gourd, etc.
The invention also provides a pesticide composition for rapidly preventing and treating powdery mildew of crops, wherein the active ingredients in the pesticide composition comprise chitosan oligosaccharide and sulfur, the weight ratio of the chitosan oligosaccharide to the sulfur is 1:20-60, the sum of the weight of the chitosan oligosaccharide and the sulfur accounts for 20-80% of the weight of the pesticide composition, and the pesticide composition is in the form of a suspending agent.
The invention has the advantages of
The invention discovers the composition of chitosan oligosaccharide and sulfur in a specific ratio, and the composition can achieve the purposes of high efficiency and rapidness in controlling powdery mildew of crops and has very good quick-acting property.
The invention also discovers that the pesticide composition containing the chitosan oligosaccharide and the sulfur can be used for quickly preventing and controlling powdery mildew of crops without causing any phytotoxicity to the crops.
The invention also discloses a method for preventing and treating crop powdery mildew by using the pesticide composition containing chitosan oligosaccharide and sulfur, in particular a method for preventing and treating powdery mildew in the early stage and the development stage.
Detailed Description
Example 1: preparation of chitosan oligosaccharide-sulphur suspending agent
Preparation 1: 2% chitosan oligosaccharide and 40% sulphur suspending agent
25g of chitosan oligosaccharide raw drug (80 wt% concentration), 400g of sulfur raw drug, 50g of alkylphenol polyoxyethylene, 30g of fatty alcohol polyoxyethylene ether, 20g of sorbitan fatty acid ester polyoxyethylene ether, 30g of polyethylene glycol, 50g of olive oil, 10g of glycerol and the balance of water, wherein the balance is 1000 g. The raw materials are fully mixed and sanded to obtain the chitosan oligosaccharide sulfur suspending agent which is named as preparation 1.
Preparation 2: 2 percent of chitosan oligosaccharide and 60 percent of sulfur suspending agent
25g of chitosan oligosaccharide raw drug (80 wt% concentration), 600g of sulfur raw drug, 50g of alkylphenol polyoxyethylene, 30g of fatty alcohol polyoxyethylene ether, 20g of sorbitan fatty acid ester polyoxyethylene ether, 30g of polyethylene glycol, 50g of olive oil, 10g of glycerol and the balance of water, wherein the balance is 1000 g. The raw materials are fully mixed and sanded to obtain the chitosan oligosaccharide sulfur suspending agent which is named as preparation 2.
Preparation 3: 1% chitosan oligosaccharide and 60% sulphur suspending agent
12.5g of chitosan oligosaccharide original drug (80 percent by weight), 600g of sulfur original drug, 50g of alkylphenol polyoxyethylene, 30g of fatty alcohol polyoxyethylene ether, 20g of sorbitan fatty acid ester polyoxyethylene ether, 30g of polyethylene glycol, 50g of olive oil, 10g of glycerol and the balance of water, wherein the balance is 1000 g. The raw materials are fully mixed and sanded to obtain the chitosan oligosaccharide sulfur suspending agent which is named as preparation 3.
Preparation 4: 0.5 percent of chitosan oligosaccharide and 35 percent of sulfur suspending agent
6.25g of chitosan oligosaccharide original drug (80 percent by weight), 350g of sulfur original drug, 50g of alkylphenol polyoxyethylene, 30g of fatty alcohol polyoxyethylene ether, 20g of sorbitan fatty acid ester polyoxyethylene ether, 30g of polyethylene glycol, 50g of olive oil, 10g of glycerol and the balance of water, wherein the balance is 1000 g. The raw materials are fully mixed and sanded to obtain the chitosan oligosaccharide sulfur suspending agent which is named as preparation 4.
Preparation 5: 5% chitosan oligosaccharide and 50% sulphur suspending agent
62.5g of chitosan oligosaccharide original drug (80 percent by weight concentration), 500g of sulfur original drug, 50g of alkylphenol polyoxyethylene, 30g of fatty alcohol polyoxyethylene ether, 20g of sorbitan fatty acid ester polyoxyethylene ether, 30g of polyethylene glycol, 50g of olive oil, 10g of glycerol and the balance of water, wherein the balance is 1000 g. The raw materials are fully mixed and sanded to obtain the chitosan oligosaccharide sulfur suspending agent which is named as preparation 5.
Example 2 wheat powdery mildew control test in the field
The wheat powdery mildew prevention and treatment is carried out in a spring wheat area, 8 treatments are carried out in the initial stage of the wheat powdery mildew in the first batch, namely preparation 1, preparation 2, preparation 3, preparation 4, preparation 5, 50% of sulfur suspending agent (commercially available), 5% of amino-oligosaccharin aqueous solution (self-made by AGO GYO Co., Ltd. in Hainan Zhengshion), clear water is added for 1 time after each treatment for 3 times, each treatment is repeated for 20 square meters, the total concentration of chitosan oligosaccharide and sulfur is diluted to 1000ppm for application, the second batch of experiments are carried out in the development period of the wheat powdery mildew, the application times are 2, and the second application is carried out 7 days after the first application. And (3) carrying out control effect measurement the next day after the first batch of experiments are applied, calculating control effect, measuring control effect every day until 14 days after the first batch of experiments are applied, carrying out control effect measurement the next day after the first batch of experiments are applied, calculating control effect, measuring every day until 14 days after the second batch of experiments are applied. See tables 1 and 2 below for the first specific results.
TABLE 1 early prevention and treatment of wheat powdery mildew
Table 1 shows that the time for the preparations 1 to 3 to achieve the expected control effect is respectively shortened by 3 days, 4 days and 3 days compared with the expected control effect, the time is shortened by 50% at most, and the quick action of controlling powdery mildew is improved, the preparations 4 and 5 can achieve the control effect as expected, and the control effect can also achieve the expected control effect under the condition of single application of 50% of sulfur suspending agent, but the time is longer than the expected time, while the control effect of the chitosan oligosaccharide aqueous solution single agent is difficult to achieve 85% of control effect, and only reaches 72% of control effect under the condition of 9 days.
TABLE 2 prevention and treatment effects on wheat powdery mildew in the development period
In the development period of wheat powdery mildew, the expected control effect can be basically achieved by applying the 50 percent sulfur suspending agent twice at an expected time (1 day longer than the expected time), but the leaf burning condition is the condition that the edges of the leaves are yellowed. The preparation 1-5 has no phenomenon of leaf burning, and the expected control effect can be achieved after twice drug application, especially the preparation 1-3 has no phenomenon of leaf burning, and the time for achieving the expected control effect is shorter than the expected time, respectively shortened by 4 days, 5 days and 4 days, and shortened by 41%, and the preparation 4 can achieve the control effect and shortened by only 1 day.
Example 3 field control test for powdery mildew of watermelon, balsam pear, strawberry and grape
As can be seen from example 2, the combination of chitosan oligosaccharide and sulfur can shorten the control time when controlling wheat powdery mildew, especially the preparations 1-3, while the sulfur single dose is equivalent to the expected control time, and the chitosan oligosaccharide single dose is difficult to achieve the expected control effect within the expected time. Therefore, the control test of powdery mildew of other crops is continuously carried out aiming at the preparations 1 to 5, whether regularity exists, namely whether the time for achieving the expected control effect is shortened, and the test is not carried out aiming at the sulfur single agent and the chitosan oligosaccharide single agent.
The control method and the control effect measurement method for powdery mildew of other crops are the same as the example 2, and the application concentration is adjusted in the control process to determine the proper application times for improving the quick-acting performance, wherein the specific application times are clear in the tables 3 to 10. See tables 3-10 below for specific results:
TABLE 3 early-stage control effect of powdery mildew of watermelon
TABLE 4 prevention and control of powdery mildew of watermelon in its developmental stage
TABLE 5 early-stage control effect on powdery mildew of balsam pear
TABLE 6 preventive and therapeutic effects on powdery mildew of Momordica charantia at its developmental stage
TABLE 7 early control effect of strawberry powdery mildew
TABLE 8 prevention and treatment effects on strawberry powdery mildew at the development stage
TABLE 9 early control of grape powdery mildew
TABLE 10 prevention and treatment effects on grape powdery mildew at development stage
As can be seen from tables 3-10, the ratio of the chitosan oligosaccharide and the sulfur can realize quick-acting control of powdery mildew in the period of 1:20-60, and besides, the ratio of the chitosan oligosaccharide and the sulfur is verified to be difficult to obtain good quick-acting performance in the cases of 1:70 and 1:10, although the expected control effect can be achieved, the time for achieving the expected effect is longer.
Claims (10)
1. The application of the pesticide composition containing the chitosan oligosaccharide and the sulfur is characterized in that the application is that the pesticide composition improves the quick-acting property for preventing and treating powdery mildew of crops, the quick-acting property is that the time for achieving the same prevention effect is shortened by more than 30 percent, the pesticide composition contains the chitosan oligosaccharide and the sulfur as active ingredients, and the weight ratio of the chitosan oligosaccharide to the sulfur is 1: 20-60.
2. The use as claimed in claim 1, characterized in that the pesticide composition is applied at an application concentration of 500-2000ppm for controlling powdery mildew of crops.
3. Use according to claim 1, characterized in that the quick action is a reduction of more than 40% in the time taken to reach the same control effect.
4. Use according to claim 1, characterized in that the sum of the weight of chito-oligosaccharide and sulphur in the pesticide composition is 20-80% by weight of the pesticide composition.
5. Use according to claim 1, characterized in that the crop is wheat, melons, strawberries or grapes, preferably the melons are pumpkin, cucumber, watermelon, melon, squash, winter melon, gourd, luffa, balsam pear, bottle gourd, finger citron, snake gourd, etc.
6. A method of controlling powdery mildew in crops using a pesticidal composition comprising chitosan oligosaccharide and sulphur, said method comprising the steps of: the pesticide composition containing the chitosan oligosaccharide and the sulfur is applied at the early stage of the powdery mildew of crops or the development stage of the powdery mildew, the total concentration of the chitosan oligosaccharide and the sulfur as active ingredients is adjusted to 500-2000ppm for spraying, the spraying frequency is 1-3 times, preferably 1-2 times, when the spraying frequency is 2 times or 3 times, the interval time between the two applications is 5-10 days, the active ingredients in the pesticide composition are the chitosan oligosaccharide and the sulfur, and the weight ratio of the chitosan oligosaccharide to the sulfur is 1: 20-60.
7. The method according to claim 6, characterized in that the early stage of crop powdery mildew disease is characterized by having a powdery mildew disease index of 15% or less, the pesticide composition is applied 1 time at the early stage of crop powdery mildew disease, the powdery mildew development stage is characterized by having a powdery mildew disease index of more than 15% and 35% or less, and the pesticide composition is applied 2 times at the development stage of crop powdery mildew disease.
8. The method as claimed in claim 6, characterized in that the sum of the weight of chito-oligosaccharide and sulphur in the pesticide composition is 20-80% by weight of the pesticide composition.
9. The method according to claim 6, wherein the crop is wheat, melons, strawberry or grape, preferably, the melons are pumpkin, cucumber, watermelon, melon, pumpkin, squash, white gourd, luffa, balsam pear, bottle gourd, finger citron or snake gourd.
10. The pesticide composition comprises active ingredients of chitosan oligosaccharide and sulfur in a weight ratio of 1:20-60, the sum of the weight of the chitosan oligosaccharide and the sulfur accounts for 20-80% of the weight of the pesticide composition, and the pesticide composition is in the form of a suspending agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910903927.9A CN110651795A (en) | 2019-09-24 | 2019-09-24 | Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910903927.9A CN110651795A (en) | 2019-09-24 | 2019-09-24 | Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110651795A true CN110651795A (en) | 2020-01-07 |
Family
ID=69038390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910903927.9A Pending CN110651795A (en) | 2019-09-24 | 2019-09-24 | Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110651795A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402985A (en) * | 2001-09-04 | 2003-03-19 | 中国科学院南京土壤研究所 | Sulphur colloid and its prepn |
| KR100755465B1 (en) * | 2006-06-19 | 2007-09-05 | 주식회사 식물나라 | Control agents for powdery mildew and anthracnose |
| CN103355343A (en) * | 2013-07-26 | 2013-10-23 | 海南正业中农高科股份有限公司 | Agricultural composition containing sulphur |
| CN103392737A (en) * | 2013-07-26 | 2013-11-20 | 海南正业中农高科股份有限公司 | Agricultural composition taking oligosaccharide and sulphur as synergistic components |
| CN108503448A (en) * | 2018-06-13 | 2018-09-07 | 贵阳开磷化肥有限公司 | It is a kind of that there are quick-acting and sustained release fertilizers preparation methods |
-
2019
- 2019-09-24 CN CN201910903927.9A patent/CN110651795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402985A (en) * | 2001-09-04 | 2003-03-19 | 中国科学院南京土壤研究所 | Sulphur colloid and its prepn |
| KR100755465B1 (en) * | 2006-06-19 | 2007-09-05 | 주식회사 식물나라 | Control agents for powdery mildew and anthracnose |
| CN103355343A (en) * | 2013-07-26 | 2013-10-23 | 海南正业中农高科股份有限公司 | Agricultural composition containing sulphur |
| CN103392737A (en) * | 2013-07-26 | 2013-11-20 | 海南正业中农高科股份有限公司 | Agricultural composition taking oligosaccharide and sulphur as synergistic components |
| CN108503448A (en) * | 2018-06-13 | 2018-09-07 | 贵阳开磷化肥有限公司 | It is a kind of that there are quick-acting and sustained release fertilizers preparation methods |
Non-Patent Citations (2)
| Title |
|---|
| VAN AUBEL, G ET,AL: "Oligosaccharides successfully thwart hijacking of the salicylic acid pathway by Phytophthora infestans in potato leaves", 《PLANT PATHOLOGY》 * |
| 罗志会等: "壳聚糖在植物病害防治方面的研究", 《农业装备技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107581189B (en) | Composition containing oligosaccharide and pyridine bactericidal components | |
| CN103563958B (en) | Bactericidal composition containing prochloraz and lentinan and application thereof | |
| CN110651795A (en) | Use and method of composition containing chitosan oligosaccharide and sulfur for preventing and treating powdery mildew | |
| CN101194620B (en) | Bactericide agent composition containing tebuconazole | |
| CN103651452A (en) | Bactericidal composition containing octyl trichlamide and carbendazim and application of bactericidal composition | |
| CN110692637A (en) | Application of pesticide composition containing chitosan oligosaccharide and sulfur in orchard clearing | |
| CN106172404B (en) | A kind of bactericidal composition and its application containing coumoxystrobin and bromothalonil | |
| CN107047563A (en) | A kind of bactericidal composition for preventing and treating Zizyphus maurtiana powdery mildew | |
| CN108094430A (en) | A kind of cotton defoliation composition | |
| CN110810090B (en) | Method for preventing and controlling powdery mildew of 'Guipu No. 6' winter grape cultivated in two-harvest mode | |
| CN103636623A (en) | Azoxystrobin-containing bactericidal composition | |
| CN105961413A (en) | Bactericidal composition containing oxolinic acid and bromothalonil | |
| CN111670902B (en) | Pesticide composition containing Vanilthioketal and ethylicin and application thereof | |
| CN106472547B (en) | A kind of composition pesticide containing chlorobenzene ether amide and Prochloraz | |
| CN112772651A (en) | Oligogalacturonic acid and kasugamycin combined bactericide and application thereof | |
| CN110463709A (en) | Composition, preparation and its application | |
| CN108651458A (en) | A kind of bactericidal composition containing carvacrol and hexaconazole | |
| CN104904717B (en) | A kind of bactericidal composition containing ZJ0712 and S-Ethyl ethylthio sulfonate | |
| CN103651396A (en) | Sterilization composition | |
| CN103651398B (en) | Compound bactericide | |
| CN104255754B (en) | A kind of compositions preventing and treating real-time fluorescent RCR Peptic Ulcers | |
| CN107980777A (en) | A kind of bactericidal composition containing bromothalonil and eugenol | |
| CN102204551A (en) | Carbendazim and bromothalonil compounded fungicide | |
| CN107873715A (en) | A kind of complex composition that mycin and SYP-3375 are irrigated containing promise | |
| RU2746247C1 (en) | Method for increasing productivity and resistance of plants to stress factors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: Fuchang Village, Laocheng Development Zone, Chengmai County, Hainan Province, 571923 Applicant after: Hainan Zhengye Biotechnology Co.,Ltd. Address before: 571924 Fuchang village, Laocheng Development Zone, Chengmai County, Hainan Province Applicant before: HAINAN ZHENGYE ZHONGNONG HIGH TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CB02 | Change of applicant information |