Why regulate peanut growth? There are two reasons: first, to prevent lodging, and second, to prevent excessive vegetative growth. Both purposes are aimed at increasing yield.

When is the right time to regulate peanut growth?

There are three references. The first reference is the growth stage. The optimal growth period is between the full flowering stage and the pegging stage. At this time, the peanut is in an important period of reproductive growth. Proper growth regulation allows the peanut to transition quickly from vegetative growth to reproductive growth, which plays an important role in increasing yield.

The second reference is the growth condition of the peanut. If the peanut plant height is about 40cm and the peanut rows begin to close over, and if water and fertilizer are sufficient, growth should be regulated at this time. If it continues to grow too quickly, a second regulation should be done at about 55cm, so that the peanut plant height is kept at about 60cm. On one hand, this prevents lodging; on the other hand, it prevents excessive vegetative growth that causes nutrient deficiency.

The third reference is based on time and climate. Each year, the first growth regulation is around July 15, and the second is half a month after the first regulation ends, generally in early August. It is recommended to regulate peanut growth in two applications, because of the fear that too large a single dose may cause phytotoxicity to the peanut. However, in actual production, if the dose is suitable and the timing is right, one regulation is already enough.

Selection of peanut growth regulation chemicals.

Paclobutrazol, Aidazhuang, uniconazole and others commonly seen on the market are all good choices. Their growth regulation principle is to inhibit the synthesis of gibberellin inside the peanut. For the safety of application, paclobutrazol is not recommended. Peanut Aifeng and Peanut Guobao combined with synergists are all good choices.

Precautions for peanut growth regulation.

First, strictly follow the application standards to prevent excessive application and cause phytotoxicity to the peanut.

Second, apply the chemical on cloudy days or in the afternoon, and there should be no rain within six hours after application.

Third, do not spray back and forth during application, as this easily causes uneven application.

The technology for peanut growth regulation is now very mature, and there are many commonly used growth regulation chemicals on the market. Many farmer friends know the timing of peanut growth regulation and the precautions for it. Science Xingnong aims to help farmer friends who only half understand peanut growth regulation. Right now is an important period for peanut growth regulation. May all bosses have a good harvest in 2018.

The above comes from Science Xingnong.