Causes early deciduous peanuts are mainly due to: premature decompensation, sand more serious land; leaf spot damage, especially net spot and brown spot, once it spread quickly, often within a few days caused a large number of leaves off Premature and over-spraying of conditioners, especially Pyrazole and paclobutrazol, and conditioners containing this ingredient as the main ingredient are more severe. Prevention of early fall leaves can take corresponding measures for different reasons. The main measures are:

First, foliar spray fertilizer. When peanuts reach the late growth stage, the ability of roots to absorb nutrients from the soil and the ability of root nodules to fix nitrogen begin to weaken, while the ability of the leaves to absorb nutrients is increasing. Foliar spray fertilizer supplement has many advantages, such as rapid absorption, rapid action, high utilization rate, good return, etc. It is a good measure to prevent early fall caused by premature aging.

Second, to prevent leaf spot disease. From the peanut to the late growth stage, there are many kinds of leaf spot that damage the leaves caused by early defoliation. It is mainly brown spots and net spot disease that are harmful and hard to control. In the early stage of disease, it can spray 3 to 4 times of 80% mancozeb or M45600 to 800 times the interval between 8 to 10 days, and can also spray 70% thiophanate-methyl 800 to 1000 times or other new bactericide.

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