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October 13, 2025

Summer Maize Variety - Denghai 6213

This hybrid variety is characterized by a compact plant structure, making it well-suited for high-density planting. It has an average growth cycle of 101 days, with an average plant height of 233 cm and an ear position at 95 cm above the ground. The plant exhibits strong resistance to lodging and demonstrates good overall disease resistance. It shows high resistance to several common corn diseases, including large spot disease, leaf spot, bacterial wilt, corn smut, corn dwarf mosaic virus, and species of Curvularia. It also has some level of resistance to corn borers. The ears are barrel-shaped, measuring 17.1 cm in length, 5.1 cm in diameter, and 3.1 cm in shaft thickness. The ear has a short bare tip of 0.8 cm, with about 14.5 rows of kernels. Each ear contains approximately 520.1 grains, weighing around 329.0 grams, resulting in a seed yield of 85.4%. The cob is white, while the kernels are half-dent type and yellow in color.

The nutritional composition of this variety includes a crude protein content of 10.24%, crude fat of 4.70%, lysine of 0.27%, crude starch of 71.74%, and a bulk density of 756 g/l. These values make it a valuable option for both feed and food use.

In terms of yield performance, during the 2001 production trials, the variety achieved an average yield of 639.4 kg per mu (approximately 3.2 tons per hectare), demonstrating its potential for high productivity under suitable conditions.

For optimal cultivation, it is recommended to plant at a density of 3,500 to 4,000 plants per acre. Farmers should ensure proper seedling emergence, apply balanced fertilization, and focus on the combined use of nitrogen, phosphorus, and potassium. A basal fertilizer should be applied at planting, followed by a top-dressing fertilizer during the tasseling stage. Granular fertilizer can be applied as needed. Adequate irrigation is essential from the boot stage through the grain-filling stage to support healthy development and maximize yield. Timely monitoring and control of pests and diseases are crucial to maintaining crop health.

This variety is best suited for areas within the province that have adequate water supply and fertile soil conditions. Its adaptability and resilience make it a promising choice for farmers looking to improve both yield and quality in their corn production systems.

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