Pesticide composition and method for preventing and treating clubroot of cruciferous crops
A technology of cruciferous crops and pesticide composition, which is applied in botany equipment and methods, fertilizer mixtures, chemicals for biological control, etc., can solve problems such as inability to cure clubroot to crops, and achieve low cost , Improve quality, cost and pollution-free effect
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Embodiment 1
[0045] In the present embodiment, take Brassica napus seed as test material, test method is as follows:
[0046] First dilute the test agent to five different concentrations of 0.01, 0.05, 0.1, 0.15 and 0.2 mg / L in sequence, then put the rapeseed into the diluted drug solution, soak for 6 hours, take it out, wash it and dry it halfway After that, put it in a petri dish. Put two layers of qualitative filter paper under the seeds in each petri dish, add 10ml of clear water to re-wet the filter paper, and then place it in an artificial climate box for cultivation. During the test, observe from time to time, add water in time to prevent water loss, and ensure that the amount of water added to each treatment is consistent.
[0047] Four repetitions were set for each test concentration, with 100 seeds per repetition, and a total of 400 seeds were required. Choose clean rapeseeds, mix them thoroughly and evenly, spread them into a thin layer, and then randomly and accurately count ...
Embodiment 2
[0054] In the present embodiment, take the control of Chinese cabbage clubroot field efficacy test as an example, the test method is as follows:
[0055] The soil acidification in the Chinese cabbage experimental field was serious, and after years of continuous planting, the clubroot became serious (the incidence rate was more than 95%, and the disease index was 76). The experiment consisted of 3 treatments, and each treatment was repeated 3 times.
[0056] The first test started from the stage of 2 leaves and 1 heart of Chinese cabbage. The stems and leaves were sprayed with 0.15 mg / L brassinolide liquid, sprayed once every 10 days, and sprayed 5 times in a row. The control agent was treated with 75% carbendazim wettable powder 500 times solution for root irrigation, 250ml per plant, once every 10 days, and irrigated 4 times continuously.
[0057] The data acquisition for the above experiments were all carried out when the Chinese cabbage was harvested, and 10 plants were ra...
Embodiment 3
[0071] In the present embodiment, take the control of rape clubroot field efficacy test as an example, the test method is as follows:
[0072] The incidence of clubroot in the tested rapeseed field was serious (the incidence rate was over 87%, and the disease index was 65.1). The front stubble of the test field is paddy rice, the test site is flat and typical loam soil, and the soil humidity is relatively high when the pesticide is applied, about 60%. The experiment consisted of 3 treatments, and each treatment was repeated 3 times.
[0073] First soak the rapeseed seeds with a 0.05 mg / L medicinal solution, remove them after 6 hours, and dry them in the air until they are half dry before sowing. When the rapeseed seedlings have two cotyledons fully unfolded, spray the stems and leaves with a drug solution with a concentration of 0.15 mg / L, and apply the drug every 7 days, and spray 5 times in a row.
[0074] The control agents were 10% Cyazofamid suspension and 50% Fluazinam...
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