A Detailed Guide to the Planting Time and Methods of Adzuki Beans

SummaryPlanting time: Adzuki beans are best sown around May to June. Planting method: Select robust, plump, disease-free varieties, treat the seeds with a fungicide for disinfection before sowing, plow and loosen the soil, apply decomposed farmyard manure and compound fertilizer, then sow. After sowing, the temperature should not be lower than 8°C. Thin the seedlings when the first true leaf appears. Before flowering, carry out intertillage and weeding, and at the early flowering stage, potassium dihydrogen phosphate can be used as a top dressing.

I. Variety Selection

1. Choosing excellent varieties helps adzuki beans grow robustly with high quality and high yield, so when selecting seeds, carefully observe the appearance of the seeds and choose varieties with plump grains, bright color and strong disease resistance.

2. Then remove shriveled seeds, damaged seeds and excess impurities, and place the seeds outdoors in full sun for about 3 days. After sunning, coat the seeds and treat them with agents such as Shilinshen for seed dressing and disinfection to improve their disease resistance, then air-dry them and they are ready for sowing.

II. Land Preparation and Fertilization

1. Adzuki beans have strong growth ability and do not have very high soil requirements, but if you want to increase yield, you still need to choose sandy soil with convenient drainage and irrigation, strong water and fertilizer retention capacity and humus. The previous crop should not be a legume, so as to avoid serious soil-borne diseases, which are unfavorable to the growth and development of adzuki bean roots and stems and reduce their quality and yield.

2. Adzuki bean seedlings have relatively poor ability to emerge from the soil, so land preparation should be done well. Level and finely harrow the soil, form ridges and press them to improve the soil's fertilizer and water retention capacity, then according to the soil area and fertility, apply sufficient decomposed farmyard manure and compound fertilizer to help supply the nutrients needed for adzuki bean growth.

III. Sowing Time

1. Adzuki beans like to grow in a warm environment. After sowing, the temperature should not be lower than 8°C, and the suitable temperature for germination is about 15-16°C. Therefore, attention should be paid to the sowing time, and sowing too early should be avoided. Also, the average soil temperature should not be lower than 15°C.

2. Generally, sowing can be chosen around May to June each year. When sowing, ridge cultivation can be used, sowing at a plant spacing of about 12 cm. During this period, the hole depth should not exceed 4 cm, and the sowing density should be well controlled to avoid sowing too densely, which is unfavorable to the middle and late growth of adzuki beans. After sowing, gently press the soil firm.

IV. Field Management

1. After the seedlings have emerged uniformly, thin them in time, usually when the first true leaf appears. During this period, keep the vigorously growing seedlings and remove the weaker ones. Then, before flowering, carry out intertillage and weeding, and ridge and earth up the soil to prevent weeds from competing for the nutrients needed for adzuki bean growth.

2. At the early flowering stage, agents such as potassium dihydrogen phosphate can be used as a top dressing. Mix the agent with water and spray it on the leaves, and water appropriately according to soil conditions. During this period, pay attention to the dosage, and do not water too much. When it rains, drainage measures should be taken well to avoid waterlogging that causes root rot, which is unfavorable to the robust growth of the plants and reduces their quality and yield.