What is the role of pinching in soybean cultivation?
What is the use of pinching soybeans? Can any readers help explain? Reasons for pinching soybeans: If soil fertility is too high, water and fertilizer conditions are sufficient, or if there is abundant rain in the late growth period, soybeans are prone to excessive vegetative growth. This is especially prominent in varieties with indeterminate podding habit and in intercropped and relay-cropped soybeans. Once soybeans develop excessive vegetative growth...
What is the use of pinching soybeans? Can any readers help explain?Reasons for pinching soybeans:
If soil fertility is too high, water and fertilizer conditions are sufficient, or if there is abundant rain in the late growth period, soybeans are prone to excessive vegetative growth. This is especially prominent in varieties with indeterminate podding habit and in intercropped and relay-cropped soybeans. Once soybeans develop excessive vegetative growth or lodging, it will cause a large number of flowers and pods to drop, affecting yield and reducing quality.
Benefits of pinching soybeans:
Pinching can control the vegetative growth of soybeans, promote the redistribution of nutrients, concentrate them for supply to flowers and pods, help increase flowers and preserve pods, and control excessive vegetative growth. It makes soybean leaves thicker, reduces plant height, increases the number of pods per plant, promotes early maturity, and improves yield and quality. According to experiments, pinching at full bloom stage can generally increase yield by 10-14%.
Methods and precautions for pinching soybeans:
Pinching is carried out from full bloom stage to final bloom stage, and the effect is most significant. Generally, about 2 cm can be pinched off from the top of the main stem of the soybean. For plots with poor soil fertility, poor water and fertilizer conditions, weak soybean growth, and premature aging, pinching is not suitable. At the early bloom stage, a 0.3% potassium dihydrogen phosphate solution and a 0.1% borax solution should be sprayed on the leaves. This adjusts nutrition, increases flowers and preserves pods, increases grain weight, and achieves high yield.
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