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Sustained-release granule suitable for being broadcasted by agricultural unmanned aerial vehicle

A technology of slow-release granules and slow-release granules, which can be used in applications, insecticides, biocides, etc., and can solve the problems of harming the heart leaves of corn, small mist droplets, and difficulty in reaching the spray mist droplets.

Pending Publication Date: 2021-02-23
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2) The spraying of agricultural drones has the disadvantages that are difficult to overcome, that is, the spray droplets of agricultural drones are often smaller than the conventional spray droplets, and the sprayed fine droplets will evaporate and drift during the deposition process, which will affect the environment and non-targets. living things are at risk
For example, the migratory pest Spodoptera frugiperda often damages the heart leaves of corn, and the borer pest Corn Borer also damages the heart leaves, and these two kinds of pests harm the bottom of the heart leaves, and it is difficult for spray droplets to reach this part

Method used

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  • Sustained-release granule suitable for being broadcasted by agricultural unmanned aerial vehicle
  • Sustained-release granule suitable for being broadcasted by agricultural unmanned aerial vehicle
  • Sustained-release granule suitable for being broadcasted by agricultural unmanned aerial vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 0.4% spinosad sustained release granules

[0031] 4g spinosad, 20g ethyl cellulose, 40g pregelatinized starch, 10g pull-off powder Bx, 5g rose bengal and 911g sepiolite powder were mixed, crushed to 325 mesh, and put into a disc granulator. Dissolve 10g of polyvinyl alcohol 17-88 in 190mL of water to prepare a 5% aqueous solution, and gradually spray the 5% polyvinyl alcohol 17-88 aqueous solution onto the powder in the disc granulator under the condition of rotating the turntable, and the obtained granules are respectively Pass through 10 mesh and 20 mesh sieves. After drying, sustained-release granules with a particle size of 0.8-1.7 mm can be obtained.

Embodiment 2

[0033] 5% Chlorpyrifos Sustained Release Granules

[0034] 50g of chlorpyrifos, 25g of cellulose acetate, 35g of pregelatinized starch, 15g of sodium lauryl sulfate, 1g of bromophenol blue and 872.5g of bentonite were mixed, crushed to 325 mesh, and put into a centrifugal granulator. Dissolve 1.5g sodium carboxymethyl cellulose in 500mL water to prepare 0.3% sodium carboxymethyl cellulose aqueous solution, and spray 0.3% sodium carboxymethyl cellulose aqueous solution to the powder in the centrifugal granulator gradually under the rotating state Above, the obtained granules were passed through 80 mesh and 60 mesh sieves respectively. Dry to get 0.2~0.3mm slow-release granules

Embodiment 3

[0036] 2% Beta-Cypermethrin Sustained Release Granules

[0037] Mix 20g of beta-cypermethrin, 30g of cross-linked sodium polyacrylate, 40g of pregelatinized starch, 10g of sodium lauryl sulfate, 3g of sodium carboxymethylcellulose, 2g of rose bengal and 895g of bentonite, and grind them to 325 mesh. Add water to moisten, install a 0.2mm screen on the swing granulator, and swing to granulate. The rod-shaped granules obtained by shaking granulation are put into a spheronizer for shaping, and dried to obtain 0.2mm spherical granules.

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Abstract

The invention discloses a granule suitable for being broadcasted by an agricultural unmanned aerial vehicle, belonging to the field of pesticides. The granule can be directly applied to unmanned aerial vehicle broadcasting and has slow release performance. The granule is especially suitable for preventing and treating pests attacking tender parts of crops, especially heart leaves, and can reach the bottoms of the heart leaves of the crops under the combined action of natural gravity and downward swirling flow of an unmanned aerial vehicle.

Description

technical field [0001] The invention relates to a slow-release granule suitable for spreading by agricultural drones. Background technique [0002] Crops are often harmed by diseases and insect pests during the growth process, and pesticide spreading is one of the common means to prevent and control crop diseases and insect pests. There are many methods of pesticide spreading, such as spraying method, dusting method, particle spreading method and so on. Among them, granule spreading is one of the important means of pesticide application, but at present, granule spreading is mainly performed by hand or manually. [0003] Agricultural drones have developed rapidly in China in recent years. At present, agricultural drones are mainly used for spraying in China, and particle spreading is basically not involved. According to analysis, one of the reasons why UAV particle spreading is basically not involved is the lack of corresponding particle spreading technology and suitable p...

Claims

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Application Information

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IPC IPC(8): A01N25/12A01N43/22A01N57/16A01N53/08A01N43/56A01P7/04
CPCA01N25/12A01N43/22A01N57/16A01N53/00A01N43/56Y02A50/30
Inventor 杨代斌崔丽闫晓静袁会珠
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI