The Latest Technical Method Tutorial for Peanut Growth Control
During periods of high temperature and frequent rain, peanuts are highly prone to excessive vegetative growth. Once peanuts grow too vigorously, their vegetative growth will exceed their reproductive growth, which is detrimental to high yields. Therefore, growth control measures must be taken during this period. So how exactly should this be done? Follow along with the editor to see the detailed introduction below.
1. Reasons for growth control
During the peak growing season of peanuts, improper management can cause the plants to grow wildly and leggily, producing only stems and leaves without setting pods, seriously affecting peanut yield. It wastes fertilizer and soil fertility, and if not controlled in time, it will cause the plants to become too tall. Because the stems grow too fast, they become thin and weak, making the plants highly prone to lodging. It will also divert nutrients to stem and leaf growth, so the pods do not receive enough nutrients for growth, resulting in poorly filled pods and reduced yield. Therefore, growth control is imperative: it suppresses the vegetative growth of the plants and converts it into reproductive growth, making the seeds plump and achieving the goal of increasing yield.
2. Timing of growth control
The timing of growth control is extremely important. Too early will lead to reduced yield, while too late will fail to achieve the desired effect of growth control, so an appropriate time must be chosen for growth control. The best time should be when a large number of peanut pegs are entering the soil, with the plant height maintained between 30-40 cm. Of course, the height control differs for different varieties. Generally speaking, for large-seeded varieties, the height is controlled at around 40 cm, while for small-seeded varieties, the height is generally controlled at around 30 cm.
3. Selection of growth control agents
The growth control agent commonly used in production is paclobutrazol. This is because paclobutrazol is used in large amounts, which can seriously affect the growth of peanut pods, causing the pod shape to shrink and increasing shell thickness. However, note two points: first, if applied too early, it will aggravate diseases in the leaf area, causing the leaves to wither and drop prematurely, leading to premature aging of the plants; second, paclobutrazol persists in the soil for a long time, which can also affect subsequent crops, so it is not suitable for continuous cropping.
4. Spraying growth control agents
When using growth control agents, several points should be noted. First, apply multiple times in small amounts, that is, growth control should be carried out in several applications to avoid spraying an excessive amount of the agent at one time; generally, no more than 40 grams per mu. Second, spraying should be done after rain; if rain occurs within 6 hours after spraying, the agent should be re-sprayed after the rain. Third, a small amount of neutral laundry detergent can be added to the agent to enhance the absorption capacity of the leaves. Fourth, when spraying, aim as much as possible at the peanut growth nodes and do not spray repeatedly.
The above is an introduction to peanut growth control technology. We hope it can help you. To learn more related knowledge, please stay tuned to us.