Soybean varieties introduced
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Dandou 8 is a high-yield soybean variety with a growth period of approximately 125 days. It exhibits limited node habits, producing white flowers. The plant height reaches about 90 cm, with 16 to 18 main stem segments and typically 2 to 4 branches. The main stem is strong and resistant to lodging. The grains are yellow with a light umbilicus, and the 100-seed weight averages around 24 grams. The full seed rate is as high as 96%, with crude fat content at 21.10% and crude protein content at 42.03%. This variety is ideal for regions such as Dandong, Yingkou, Anshan, Dalian, southern Shenyang, Hebei, Henan, and Yunnan, where it generally yields about 160 kg per mu.
For cultivation, fine soil preparation and seed selection are essential. Farmers should apply 2000 kg of Mushi farmyard fertilizer and 15 kg of diammonium phosphate as base fertilizer. The recommended planting spacing is 60 cm between rows, with 22 cm between plants in double-row configurations, covering approximately 9000 mu of land.
Dandou 9 is another popular variety with a growth cycle of about 135 days. It has a plant height of 90 cm, with 17 main stem segments and 2 to 3 branches. The stalks are sturdy, and the plant has oval leaves, white flowers, and gray hairs. The grains are round, yellow with a light yellow umbilicus, and the 100-seed weight ranges from 20 to 22 grams. It is known for its multi-flowering, high yield, disease resistance, and an intact grain rate over 96%. With a protein content of 42.9% and fat content of 19.9%, it produces more than 150 kg per mu. It thrives in areas like the southern part of Dandong in Liaoning, Dalian, Tangshan in Hebei, Funing, and similar regions.
Dandou 10 is a mid-late maturing variety with a growth period of around 137 days. It has limited node habits, white flowers, and elliptical leaves. The average plant height is 66.5 cm, with 2.9 branches per plant, 15.4 main stem segments, and 40.2 seeds per plant. The full seed rate is 90.4%, with a 100-seed weight of 22.5 grams. Both the seed coat and umbilicus are yellow, and it has a high quality with 43.47% crude protein and 21.13% crude fat. This variety has a well-developed root system, is disease-resistant, and adapts well to various environments.
In terms of cultivation, it's important to select high-quality seeds and prepare the soil thoroughly. Apply 2000 kg of Mushi farmyard fertilizer and 15 kg of diammonium phosphate as base fertilizer. Sow on time, maintaining a row spacing of 60 cm, and a hole spacing of 22 to 27 cm, depending on soil fertility. Plant two seeds per hole, following the principle of thin land for dense planting and rich land for sparse planting. Aim for 8000 to 10000 seedlings per mu. Regular field management, timely weeding, and pest control—such as for worms and soybean borers—are crucial for optimal growth.
This variety is suitable for planting in regions including Dandong, Dalian, Yingkou, Anshan, Hebei, Henan, Shaanxi, Shanxi, Gansu, Xinjiang, and Yunnan, within similar latitudes. Its adaptability and high yield make it a valuable choice for farmers seeking reliable production.