Control of soybean root maggot
Soybean root maggot is also called Liriomyza sinensis. Only harms soybeans and wild soybeans. The larvae bite on the roots of soybean seedlings, form maggot channels, and excrete feces, resulting in root rot, dwarf of bean plants, and death of seriously damaged bean seedlings. This worm occurs only once a year. The pupa overwintered in the soybean root bark tumor or soil seam, and in the middle and late May of the next year, the pupae emerged into adults, laid eggs at the soybean roots, hatched larvae, and harmed the roots of soybean seedlings.
Control methods: seed dressing with chemicals to prevent larvae, 40% dimethoate EC mixed with 0.7% of the seed amount, spray to the water, spray while mixing. If you mix 100 kg of soybean seeds, use 0.7 kg of medicine and 4 kg of water, spray with a sprayer, mix while spraying, spread out and dry.
During the peak period of adult occurrence, 1000 times of dichlorvos EC can be used for spray control. 40 kg of spray solution per 667 square meters.
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Sprinkler Irrigation of Soybean at Grain filling stage
Soybean still needs some water and nutrients to promote material accumulation and maturity, increase seed setting rate and increase yield when soybean enters the grain filling stage and maturity stage. For many years, soybean has entered the grain filling stage, which is generally very dry, which has an adverse effect on the grain filling maturity of top and upper soybean. In response, some farmers used sprinkler irrigation well water to alleviate the drought during this period. The production practice has proved that the soybean pumped and sprayed at the grain filling stage can not promote maturity, but will lead to the early withering and death of some branches and plants, thus reducing the yield. The reason is that soybeans
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Effective control of soybean root Liriomyza sinensis
Soybean root miner Ophiomyiashibatsuji (kato), also known as Liriomyza huidobrensis, belongs to Diptera, Liriomyidae. Commonly known as soybean root maggots, bean root snake flies, root flies and so on. First, distribution and harm. Soybean root miner is mainly distributed in the main soybean producing areas, and is distributed in three provinces of Northeast China, Inner Mongolia, Hebei, Shandong and Shanxi, among which Heilongjiang, Jilin and Inner Mongolia are the most prominent. Liriomyza sativa is mainly harmed in soybean seedling stage, and its feeding habit is single, only harmful to soybean and wild soybean. Larvae in soybean
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