How to weed intertillage sesame? What is the method of weeding in sesame cultivation?

Sesame is a shallow-rooted crop, which needs a relaxed soil environment during its growth, especially at seedling stage. Sesame grows slowly, but there are many kinds of weeds, which grow rapidly, competing with sesame for fertilizer, water and light, aggravating sesame diseases and insect pests. So how does intertillage weed? The following is the method of weeding sesame.

1. The benefits of sesame weeding

① Besides weeding, farming has many other functions: increasing the air permeability of soil, making sesame have strong breathing and absorption ability, and making it grow vigorously. The content of available nutrients in soil is increased, and soil microorganisms are active because of sufficient oxygen, which releases a lot of potential soil nutrients and improves the utilization rate of soil nutrients.

② Adjust soil water content, reduce the transport and evaporation of soil water to the soil surface, and improve the drought resistance of soil. Raising soil temperature, especially in early spring, is more effective for sticky and dense soil, which can make seeds germinate and seedlings grow rapidly. Control nutrient absorption and inhibit growth.

③ It can also mix soil and fertilizer, eliminate harmful substances in soil, prevent denitrification, promote the occurrence of a large number of new roots and improve absorption capacity.

2. Matters needing attention in intertillage weeding:

① The cycle and frequency of intertillage weeding are generally determined by weather, soil moisture and seedling condition. Sesame seedlings should be weeded three or four times from emergence to flowering.

② Intertillage weeding should adhere to the principle of "shallow depth". When the first pair of true leaves appear on sesame seedlings, the first ploughing is carried out. Sesame seedlings are very small, with few roots, and buried in the soil very shallowly.

(3) The second ploughing is carried out when there are two or three pairs of true leaves. When the roots grow to a certain depth, ploughing can be as deep as six to seven centimeters. This can be done at a slightly shallow depth during drought and at a slightly deeper depth when the soil is wet.

(3) When the seedlings grow 4-5 pairs of true leaves, ploughing is carried out for the third time. At this time, the axillary buds are exposed, the flower buds begin to differentiate, and the roots need a thick layer of loose soil, and the depth of intertillage is seven to centimeters.

Besides, one thing you need to do is to make sure that the soil is not too wet and don't hoe the ground before it rains. In order to get rid of weeds and keep the soil loose, we must mow the grass and the ground after the rain.

(2) First of all, avoid hoeing around the roots for six to seven centimeters to hurt the roots, which is prone to diseases; The second is to avoid uneven hoeing and easy to get wet; The third is to avoid hoeing the ground and not clearing the ditch, in case of poor rainwater drainage.