Alleviation Of Four Compounds In Plant Growth Regulators On Pyraclostrobin Toxicity

The poisoning of Fungicide, which severely hurts yields, is a common phenomenon in the agricultural production. Accordingly, the alleviation of fungicide toxicity can reduce the loss of agricultural output. Headline, a broad-spectrum strobilurin fungicide developed by BASF, is efficacious in preventing all fungal pathogens and widely used in agricultural production. The author attempts to find out the effective ways to reduce the toxicity of pyraclostrobin to the seedlings of maize and soybean by compounding pyraclostrobin with four plant growth regulators.The study is about the respective effects of pyraclostrobin and compounds of pyraclostrobin with four regulators on the seedlings of maize and soybean. The results are as follows:pyraclostrobin is dilutes for 3 types, that is,1500 dilution times,3000 dilution times and 45000 dilution times. These three types of pyraclostrobin are sprayed onto the leaves of maize seedling and corn seedling respectively. It proves toxic to the seedlings. The more dilution times, the less adverse effect. The study shows that four plant growth regulators, namely,10ppmDA-6, lOppm sodium nitrophenolate,200ppm choline chloride and 300ppm inositol, compounded with pyraclostrobin and sprayed onto the leaves of the seedlings of maize and corn, can reduce the toxicity of pyraclostrobin. As far as the relief of toxicity,10ppmDA-6 and lOppm sodium nitrophenolate are more efficacious, while 200ppm choline chloride and 300ppm inositol are less efficacious.After observing the experiments and measuring some basic configuration and physiological indices, the author comes to the following conclusion:compared with pyraclostrobin, the compounds increase the dry and fresh weight of plants, which promotes the accumulation of nutritious substances and enhances the ability of stress resistance. The compounds also lead to the enlargement of leaf lengths and leaf widths as well as broaden the leaf area, which speeds up the rate of photosynthesis, improves the photo synthetic productivity and ultimately the metabolism capacity of plants.As above mentioned, the study shows when pyraclostrobin is diluted 1500 times, its toxicity to the seedlings is the highest. The two compounds of 10ppmDA-6 and lOppm sodium nitrophenolate with 1500 dilution times can both alleviate the toxicity more efficaciously with the concentration of lOppm and 200ppm. On the other hand, the two compounds of 200ppm choline chloride and 300ppm inositol with 1500 dilution times cannot lessen the damage.The experiment researches the toxicity of pyraclostrobin to the seedlings of maize and soybean and the alleviation of toxicity after it is compounded with plant growth regulators. It lays a theoretical foundation for developing the compounds of pyraclostrobin and regulators and increasing the yield of crops.