How to control sorghum pests?
How to control sorghum pests? Sorghum pests mainly aphids, Spodoptera litura, borers, chafers. Aphids and chafers occur in seedling stage; Spodoptera litura and borers occur in heading stage and wax maturity stage, which can be controlled by pesticides such as chlorpyrifos, BT and green crystal. Sorghum is very sensitive to trichlorfon, dichlorvos, fenitrothion, dimethoate, triazophos, phoxim and other organophosphorus pesticides and cannot be used. Corresponding pesticides should be prepared strictly according to the proportion of instructions, correctly grasped, timely applied, and actively controlled. Click for more sorghum cultivation technology Click for more grain cultivation technology
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When is the best time for sorghum topdressing?
When is the best time for sorghum topdressing? Please give suggestions for sorghum: in order to meet the nutrient needs of sorghum from jointing to heading, the first fertilizer should be applied at jointing stage, 150 kg of ammonium nitrate per hectare or 120 kg of urea per hectare, and the second fertilizer should be applied at the flag stage of booting. 120 ammonium nitrate per hectare.
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Which diseases and insect pests are mainly controlled by planting sorghum?
Which diseases and insect pests are mainly controlled by planting sorghum? Please give guidance to plant sorghum to control the following diseases and insect pests: first, sorghum smut is a common disease in sorghum in Liaoning, including head smut, loose smut and head smut. Symptom recognition: head smut shows clear symptoms after heading.
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