When will the peanut boom control medicine be ready? How do you play?

Now is the peak period of peanut growth, and with the arrival of rain, peanuts are easy to accelerate due to high temperature, resulting in excessive stem growth, reduce yield, for this reason, to control peanut crazy growth in time, when to play the peanut control medicine? How?

I. Why should peanuts be controlled?

It has become an accepted fact that peanuts grow wildly and seedlings do not bear fruit. Peanut in the case of sufficient water and fertilizer, high temperature and good light, the growth rate accelerated, easily caused by excessive stem and leaf growth. This vigorous growth has no direct beneficial effect on peanut yield, but wastes soil fertility. If it is not controlled in time, the plant height is too high, easy to lodge, and excessive nutrition supply stems and leaves, so that pod development needs less nutrition, not full, affecting yield. At the same time, it will also cause premature senescence in the late fruit of peanuts, which will affect the yield and quality of peanuts. Therefore, we must pay attention to the effective control of peanut growth, promote nutrient transfer to the root, fruit size and fullness, improve the fruit yield, in order to promote peanut yield.

II. What time does it control prosperity?

1)The best time: a large number of fruit needles into the soil period, at this time the first batch of pods into the soil have a small finger belly so thick, the second batch of fruit needles head like chicken beak.

2)Sufficient water and fertilizer, vigorous growth, plant height up to 30~35 cm.

3)Before and after spraying, attention should be paid to keeping the soil wet in the field. Excessive drought will adversely absorb nutrients, and it will increase the inhibition on peanuts and produce single-kernel phenomenon.

III. Selection of Wang-controlling Agent

In production, paclobutrazol is commonly used as chemical control agent. One is that too much paclobutrazol will seriously affect the development of peanut pods, making the fruit size smaller and the shell thicker. If it is used as seed, the emergence will be delayed and the growth potential will be weak; the other is that too early application will aggravate the occurrence of peanut leaf diseases, make the leaves die and fall off ahead of time, and cause premature senescence of plants; the third is that paclobutrazol has a long residual period in the soil, which will inhibit the growth of subsequent crops and should not be used continuously. Therefore, it is recommended not to use as much as possible, peanut breeding is prohibited.

IV. Why do we reduce production prematurely?

Control boom period is a key problem, premature production will be reduced. For example, full bloom is a period of simultaneous vegetative and reproductive growth. This period not only inhibits stem and leaf growth, but also inhibits flowering and fruit needle formation. If sprayed at the next needle stage, it will inhibit fruit elongation, needle short, fruit thin, affect the number of full fruit and kernel weight.

V. How to control the prosperity of rain in big years?

Generally, it is used according to normal dosage, but too much dosage affects pod development, making fruit smaller, shell thicker, leaves premature senescence and death, and leaf diseases also have a tendency to aggravate. However, in special years, such as heavy rain years, about 10~15 days after the first control, the plant height of more than 40 cm can be sprayed once more. At the same time, uniform spraying should be carried out to avoid heavy spraying, leakage spraying and rain after spraying. High yield fields can be combined with pest control for many times a small amount of chemical control, attention should be paid to reduce the amount of chemical control agents each time.

When using, master the following principles:

1. Multiple small amount method. That is to say, peanut flourishing control should be carried out in 2-3 times to avoid excessive dosage at one time and premature flourishing control, which will affect the normal growth of peanuts. The total dosage per mu shall not exceed 40g (about 20g each time), and the spraying shall not exceed 2 sprayers each time.

2, spraying in the afternoon, within 6 hours if it rains should be re-sprayed.

3. Add a small amount of neutral detergent when spraying, which can increase the absorption capacity of the solution and leaves.

4. Spray the top growth point of peanuts when spraying, spray it once, and do not spray it again.

VI. Comprehensive management technology of peanut bloom control

1. Peanut flourishing control stage is generally high temperature and high humidity, and it is also the stage where diseases such as brown spot, black spot and scab are easy to occur. It can be combined with high efficiency spectrum fungicide to control leaf diseases.

2, this time peanut leaves, fruit needles and pods can absorb nutrients, pod development period is the key period of nutrition needs, at the same time easy to cause yellow phenomenon, at this time to pay attention to leaf nutrition supplement.

3. Pay close attention to the growth situation in the field, strengthen management, and prevent the occurrence of leaf spot disease and leaf premature aging.

4, timely harvest, avoid harvest too late, rotten fruit aggravation, affect the yield.

VII. A few points to note

1. The peanut after chemical control should pay close attention to the field growth situation, strengthen management, and prevent the occurrence of leaf spot disease and leaf premature aging.

2, timely harvest, avoid harvest too late, rotten fruit aggravation, affect the yield.

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