Recently, most areas in China have gradually brought down heavy rains, resulting in high-temperature and high-humidity climates in recent days. The growth of summer corn is mostly in the period of large bellmouths, and some diseases have been occurring in Shandong, Henan, Hebei, and other provinces and regions, which should be highly valued.
The authors found through field investigations that, firstly, the bacterial top rot disease in corn fields generally occurred more than in previous years, and secondly, the top rot of corn Fusarium was found in some plots. For corn rot caused by large areas for two years in a row, first of all, it is necessary to prescribe the right medicine early and accurately use the medicine. Immediately after the discovery of the disease, spray 600 times of Bixidan (50% Chlorobromoisocyanuric Acid Soluble Powder), 800 times of Xikang or 800ml of Xima (2% kasugamycin wettable powder). Yeltizole and streptomycin in agriculture have developed severe resistance and are not recommended.
When the diseased plants are seen in the field, the disease has entered a severe stage of disease. At this time, the drug is used again and the effect is poor. For the top rot of Fusarium, it is possible to use Trier (46% multi-resistance Mn-Zn wettable powder) 800 times solution or 50% Chlorobromoisocyanuric acid soluble powder 600 times solution to spray or dilute the heart, or to add gold shields. Foliar fertilizer enhances plant resistance. Followed by agricultural control. If the leaves are severely rotted and stuck together, they should be immediately opened with a blade to facilitate the normal spearheading of the tassel, and the cut diseased leaves should be taken out of the field and buried deep.
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