Management techniques of sesame at seedling stage

The seedling stage of sesame is in the budding period, about a month, this stage is the vegetative growth period of sesame, but the growth of sesame seedlings is slow, and it is very vulnerable to grass shortage, diseases and insect pests in the seedling stage. Therefore, strengthening seedling management is the key point to ensure stable production and increase production of sesame. Let's take a look at the detailed introduction.

1. Check and replenish seedlings

When sesame can emerge within a week after sowing, it is necessary to check the seedlings in time. Once it is found that the seedlings can not emerge in time or incomplete, the causes should be found in time and corresponding measures should be taken. For those who are short of seedlings, the seedlings should be transferred and replenished in time, and if there is a serious phenomenon of lack of seedlings, they should be replanted with the same variety in time. In the rainy and sunny weather after sowing, the soil is very easy to harden and form hard, which is disadvantageous to the unearthing and growth of the seedlings.

2. The seedlings are fixed

After the sesame seedlings grow neatly, the seedlings should be interspersed in time, which is usually carried out when the seedlings grow a pair of true leaves, separate the agglomerated seedlings and remove the dense seedlings. The seedlings were interspersed for the second time when 2-3 pairs of true leaves were grown, and the seedlings began to be fixed when the fourth pair of true leaves were grown. The time of fixing seedlings should not be early, especially in the period when the outbreak of diseases and insect pests is serious, many seedlings should be left, and some of the strong seedlings should be used as supplementary seedlings. Watering thoroughly before fixing seedlings, transplanting with soil, preferably in the evening or cloudy days, and timely watering of fixed roots after fixing seedlings to facilitate survival.

3. Ploughing and weeding

Weeding and weeding in the seedling stage is an important work. The time and depth of intertillage should be carried out according to the weather, soil and seedling growth conditions. Generally, the first intertillage should be carried out at the first seedling stage, and the middle ploughing should be shallow rather than deep, mainly weeding and soil moisture conservation, so as not to damage the seedling root system. The second intertillage was carried out at the second interseedling, and the suitable depth was 5-6 cm. After the third intertillage, the fifth pair of true leaves were grown, and the depth could reach 8-10cm. After budding, the seedlings need to be intertilled, and in the last intertillage, it is necessary to cultivate soil and seal roots in order to facilitate drainage and irrigation, eliminate waterlogging and drought, reduce diseases, prevent lodging, and so on.

4. Pest control

The main diseases and insect pests of sesame in seedling stage are Fusarium wilt, virus disease, blight, small land tiger, aphids and so on, which will affect the growth of sesame and cause lack of seedlings and broken ridges in serious cases. Seed dressing and carbofuran can be used to disinfect and sterilize the soil before planting. During production, larvae can be killed manually, eggs can be erased, diseased plants can be found and taken out of the field in time to be destroyed, and then carbendazim and Lesbon EC can be sprayed for prevention and control.

The above is the introduction of sesame seedling management technology, hope to help you, want to know more related knowledge, please pay attention to us.