How to grow black sesame for high yield? Key points of planting techniques
How can black sesame be grown for high yield? Please advise on the method. To grow black sesame for high yield, you can refer to the following planting methods: 1. Seed dressing with chemicals, crop rotation, and early sowing while preserving soil moisture. Before sowing, you can use 8 grams of 50% carbendazim wettable powder or 40% carbendazim suspension concentrate, add 0.5 kg of water to make a paste, and mix well with 0.5 kg of seeds before sowing. Sesame...
How can black sesame be grown for high yield? Please advise on the method
To grow black sesame for high yield, you can refer to the following planting methods:
1. Seed dressing with chemicals, crop rotation, and early sowing while preserving soil moisture. Before sowing, you can use 8 grams of 50% carbendazim wettable powder or 40% carbendazim suspension concentrate, add 0.5 kg of water to make a paste, and mix well with 0.5 kg of seeds before sowing. Sesame is not suitable for continuous cropping; a 4-year 2-crop rotation system is recommended. Make full use of good preceding crops and sow early.
2. Sow early at the right time and control density. For summer sesame, the sowing date should be no later than June 15, and generally the earlier the better. The cultivation density is generally 8000-10000 plants per 667 sq m.
3. Strictly master the timing and method of topping. For summer sesame, keep 2 pairs of true leaves when topping, and retain 2-3 cm of stem nodes above the leaves. In the same field, keep the standard for retaining true leaves consistent, and complete topping in one go.
4. Pay attention to supplementary seedling fertilizer. After topping sesame, to prevent nutrient deficiency in new branches, an appropriate amount of quick-acting fertilizer can be applied; when the new branches grow the second and third pairs of true leaves, spray 100-fold mepiquat chloride or paclobutrazol to prevent lodging later and increase the number of effective capsules.
5. Prevent waterlogging and drought, manage early, and prevent weed infestation. When planting, first open the bed furrows and surrounding furrows. Generally, the bed width is 2-2.5 m, the bed furrow depth is 0.3 m, and the surrounding furrow depth is 0.4-0.5 m. The arrangement of furrows and beds depends on the terrain and soil quality; in flat areas, waist furrows should also be made. When the seedlings grow 2-3 pairs of true leaves, thin them to a final stand with a row spacing of 36 cm x 12-15 cm, and carry out 1 intertillage weeding. When the seedlings are 33 cm tall, earth up the soil in combination with topdressing.
6. Scientific fertilization and disease and pest prevention. Because summer sesame has a short growth period and needs much fertilizer in a concentrated way, basal fertilizer should be the main application. Apply about 15 kg of ammonium bicarbonate per 667 sq m, plus 30-40 kg of phosphate fertilizer and about 6-8 kg of potassium fertilizer. During the growing period, for fields with sparse seedlings and weak growth, 3-5 kg of urea can be applied per 667 sq m. At the jointing stage, to prevent angular leaf spot and leaf blight, spray leaves twice with 1000-fold 50% iprodione solution. If aphids occur, use 2000-3000-fold dimethoate emulsifiable concentrate spray.
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