What are the symptoms of Xicaojing drug damage?

Xicaojing is suitable for controlling weeds in rice fields, such as paspalum grass, cattle hair grass, Euphorbia angustifolia, alisma alisma, wild sagittaria, mother grass, small sagittaria, etc., and can also be used to control weeds in corn, soybean, wheat, peanuts, cotton and other crops. So, what are the symptoms of Xicaojing drug damage?

First, what are the symptoms of Xicaojing drug damage?

Xicaojing will not hinder germination and emergence, and the symptoms of drug injury only occur in the cotyledons that grow out, extending from the leaf tip to the leaf margin. Broad-leaved weeds can yellowing between veins (chlorosis). As the old leaves and big leaves will absorb more liquid medicine, they will suffer first and eventually turn brown and die.

II. The usage of Xicaojing

1. Rice field use

In 15-20 days after rice transplanting, in the late tillering stage of the direct seeding field, when most of the leaves changed from red to green, 100-200 grams of 25% wettable powder per mu and about 20 kg of fine fluvo-aquic soil were applied evenly. The application of 2-5cm in water layer for 5-7 days can also control 2-leaf paspalum grass and broad-leaved weeds. From early June to late July in Northeast China and eastern Inner Mongolia, 200-250 grams of 25% wettable powder per mu, 133-150 grams per mu in North China and 100-150 grams per mu in the south.

two。 Dry land use

Before emergence after sowing, use 150-500 grams of 25% wettable powder per mu, 40 kg of water, and spray evenly on the soil surface.

Matters needing attention in the use of Xicaojing

1. The temperature should be below 30 ℃ when the pesticide is applied, and it is easy to cause drug damage when it is more than 30 ℃, so it is mainly used in the north.

two。 In the process of use, try to ensure that the land is flat and the medication is uniform. It is forbidden to be used in low-lying land with poor drainage, sandy soil with low organic matter content and heavy alkali or strong acid soil, which is prone to drug damage.

In order to improve the safety of rice and expand the herbicide spectrum, Xicaojing is usually mixed with herbicide and butachlor.