Detailed Explanation of the Key Points of Cassia Seed Cultivation Techniques

Cassia seed cultivation techniques need to be determined according to its growth habits and other conditions. See the detailed analysis below.

Growth habits: Cassia seed prefers a warm and humid climate, is intolerant of cold, and fears frost, but it is not demanding about soil. It can be planted in sandy soil or clay soil, and grows best in slightly alkaline soil. When planted in well-drained, loose and fertile soil, its root system is well developed, with the most nitrogen-fixing rhizobia. It prefers phosphorus and potassium fertilizers and is relatively drought-tolerant.

Propagation and cultivation: Use the seed propagation method, which can be divided into spring sowing and summer sowing. Spring sowing is around Qingming, and summer sowing is before the Summer Solstice. Before sowing, apply some fertilizer to the field. At a row spacing of 30 cm, sow in drills or broadcast, open shallow furrows 2-3 cm deep, and maintain appropriate moisture. Seedlings generally emerge in seven days. When the seedlings are 6 cm tall, shallow loosening of the soil, weeding, and thinning can be done, with a plant spacing of 25-30 cm. Check the seedlings and fill gaps. Transplanting is possible. When the seedlings are more than 40 cm tall, water and fertilizer must keep up to promote more branching, more flowering, and more pod setting. Guard carefully against lodging. It is best to bank some soil around the roots and remove the lower leaves to facilitate ventilation and light exposure, enhance seed plumpness, and achieve the goals of high and stable yield.

Pest and disease control: Cassia obtusifolia generally has fewer diseases. Waterlogging easily causes root rot and affects yield. Pests include aphids, spider mites, cabbage caterpillars, and others. Trichlorfon, dimethoate, and pyrethroid pesticides can be sprayed on the leaves for control.

Harvesting and processing: Generally in September in autumn, when the pods turn from green to yellow, take strict care to prevent people and livestock from entering the field and knocking the pods so the seeds fall out. After Frost's Descent, choose a sunny morning when the dew has not yet dried, cut the whole plant, place it in the yard to thresh, dry it in the sun and winnow it clean, removing all kinds of impurities, pods, and so on.