Introduction of Ruipu 909 corn variety

1. Introduction of Ruipu 909 corn variety

The Ruipu 909 corn variety is a medium-late maturing variety with a growing period of about 129 days. It has a semi-compact plant shape, with a total of 21 leaves, a plant height of 290 cm, and an ear position of 105 cm. Anthers yellow-green, filaments light pink. The fruit cluster is cylindrical and the cob is pink. The ear length is 19.8 cm, and there are about 18 rows of ears. The seeds are yellow, with a 100-grain weight of 35.8 grams and a seed yield rate of 87.7%.

2. Yield performance of Ruipu 909 corn variety

The yield of RIP 909 corn variety was 960.6 kg per mu in 2014 and 898.8 kg per mu in 2015, with an average yield of 929.7 kg per mu in the two years. In the production trial in 2016, the average yield per mu was 885.4 kg.

3. Cultivation technology of Ruipu 909 corn variety

The best time to sow the RIP 909 corn variety is between late April and early May in the spring. When planting, you should apply base fertilizer first, apply 40 kg of nitric acid and phosphate fertilizer per mu, and the soil should be fertile for better germination in the later stage. Also pay attention to the density when planting, leaving 4,000 to 4,500 seedlings per acre, not too dense. During the peak growing season, the demand for nutrients is high and top dressing is required. Apply 20 kg of urea per mu.

4. Disease and Pest Control of Ruipu 909 Corn Variety

The Ruipu 909 corn variety is susceptible to head smut and stem rot, so prevention and control work should be done well and pesticides should be sprayed in time. Fertilizer should be sprayed regularly during the growth period. With sufficient nutrients, it will grow more vigorously, thereby improving its disease resistance. Once a plant with a serious disease is found, it is recommended to remove it in time to avoid infection.