Correct Methods and Technical Key Points for Cotton Topping
How to control cotton aphids? What effective methods can be used? The control of cotton aphids should be adapted to local conditions based on the occurrence situation. When they occur in spots and patches, spot treatment should be used rather than spraying the whole field, so as to avoid killing natural enemies. For fields that reach the control threshold, chemical control should be carried out promptly, generally using 35% Saidan emulsifiable concentrate at 100-16...
How is cotton topping carried out? What method is best? Seeking adviceCotton topping can control the growth of the main stem of the cotton plant and avoid the appearance of ineffective fruit branches. The suitable period for topping is generally from early flowering to full flowering, and the specific time should be determined according to soil fertility, planting density, the local optimal flowering and boll-setting period, and the growth vigor of the cotton plants. For plots with lower soil fertility, high density, and few retained fruit branches, topping should be done appropriately earlier; for plots with more fertile soil, lower density, and more retained fruit branches, topping should be done appropriately later. Topping should follow the principle of "when the time comes, do not wait for the branches; when the branches come, do not wait for the time." Topping too early cannot make full use of the growing season and will cause a flush of excessive buds; too late results in many ineffective fruit branches, consumes a large amount of nutrients, and reduces boll weight in the later stage. The topping method is generally to remove the top one leaf and one bud of the main stem of the cotton plant.
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