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Bactericide composition, controlled release system and applications thereof

A technology of fungicide composition and aldehyde compound, applied in the direction of fungicide, application, biocide, etc., can solve the problems of short duration and other problems, achieve the effect of reducing the cost of medicine, reducing the frequency of medicine, and good control effect

Active Publication Date: 2019-09-06
NANJING SINO GREEN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Wood et al. (2017) believed that although E-2-hexenal fumigation can control certain diseases of potatoes in previous studies, including potato anthracnose (Colletotrichum coccodes), potato silver rot (Helminthosporium solani) and soft rot (Pectobacterium atrosepticum), but there is no report that this compound can control Phytophthora infestans
Also, the compound is released without the use of a controlled release system, so it inevitably has a short duration of action

Method used

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  • Bactericide composition, controlled release system and applications thereof
  • Bactericide composition, controlled release system and applications thereof
  • Bactericide composition, controlled release system and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Test on the control effect of controlled-release capsules on Phytophthora infestans in a simulated storage environment

[0039] The present invention studies a fumigant that may affect Phytophthora infestans on stored potatoes. In order to determine the actual efficacy of the developed formulations, the stored potatoes were studied at room temperature (approximately 20°C). After the potatoes are cleaned, they are dried on paper overnight, and 10 kilograms of washed potatoes are placed in each carton, a total of 32 cartons. These quantities of potatoes can fit about half a box.

[0040] A controlled-release capsule (containing 1 gram of fumigant, see Table 1 and Table 2) was taped to the inside of the lid of each treatment, and each treatment was repeated five times. No capsules were placed in the seven lids used as controls (experimental group).

[0041] The polymers used to make capsules are high-density polyethylene, low-density polyethylene, linear low-density ...

Embodiment 2

[0054] Example 2 Test on the control effect of controlled-release particles on Phytophthora infestans in a simulated storage environment

[0055] Another method of delivering the required amount of fumigant to potatoes in storage is a granular formulation. Appropriate controlled-release particles can be dispersed on stacked potato bags. The particles will fall in the bag, some will fall to the lower part of the stack, and the fumigant vapor will diffuse through the potato pile into the air. This release system can be used in warehouses where potato bags are already stacked, but it has the shortcoming of short duration and requires repeated use. For this, the mineral carrier (vermiculite) particles were tested with a polyethylene oxide coating (PEO, MW 5,000,000). The polyethylene oxide coating accounts for 10% of the particle weight. The active ingredients are added to the mineral-based carrier particles in proportions. The BHT antioxidant is incorporated into the active ingre...

Embodiment 3

[0062] Example 3 Experiment on the control effect of using candle wick bottle controlled release device on Phytophthora infestans in a simulated storage environment

[0063] A device similar to Example 2 was used to test an experiment in which fumigant was delivered to potatoes through a wick bottle in an air stream. Particles are not used here as a controlled release system. In two 5 liter buckets, respectively, air was pumped through a 6 mm inner diameter PVC pipe at a rate of 2 liters per minute. Put the candle wick bottle containing 20 ml of fumigant solution and 10 mm cotton wick exposed to the air into the bottom of a bucket. The other barrel is not provided with a wick bottle, as a control. After each barrel is sealed, there are four outlets, which are in the form of a 4mm inner diameter tube inserted into the hole of each box, and the carton is sealed with tape. The net flow rate is 0.5 liters of fumigant gas per minute.

[0064] Inoculate potatoes according to the meth...

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Abstract

The invention provides a bactericide composition, a controlled release system and applications thereof, wherein the active components of the bactericide composition and the controlled release system are allyl isothiocyanate and an aldehyde-based compound. According to the present invention, the bactericide composition and the controlled release system have good prevention and control effects on Phytophthora infestans, and can control Phytophthora infestans in a long-acting manner, reduce the use frequency and reduce the cost; by separately using allyl isothiocyanate or combining allyl isothiocyanate and a certain aldehyde-based compound, Phytophthora infestans can be effectively controlled, and the effective duration can be up to 3 months, such that a certain combination of allyl isothiocyanate and aldehyde can provide the synergistic effects in the prevention and control of Phytophthora infestans.

Description

Technical field [0001] The invention belongs to the technical field of biological pesticides, and specifically relates to a fungicide composition and a controlled release system and application thereof. Background technique [0002] Potatoes have always been an important food source in China, and as the population increases, they may become more important. Potato crops grow rapidly, with high yields per acre, and can be grown on soils that are not suitable for food crops such as rice, wheat and corn. Potatoes used for food are often stored in the soil and dug out when needed, so the storage time on the ground is short, and about 10% of the crops must be stored for (later) planting. [0003] The planting and production of potatoes is susceptible to certain pests and diseases, which limit the production of potatoes. Phytophthora infestans is an oomycete pathogen that can damage potato leaves, stems, fruits and tubers. It is the most serious potato disease in the world and caused t...

Claims

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Application Information

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IPC IPC(8): A01N47/46A01N35/02A01N35/04A01N25/18A01P3/00
CPCA01N25/18A01N35/02A01N35/04A01N47/46
Inventor 齐玉洁杨艳丽刘霞高爱华陈超赛斯文张黎杨译
Owner NANJING SINO GREEN BIOTECH
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