MySheen

A New Cotton Variety "Yuncai n3738"

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, First, the characteristics. The cotton fiber of this strain is natural green, the plant growth is steady, the leaf is medium size, the leaf warp is obvious, the plant tower type, the growth period is 122 days. The boll is prominent, precocious but not senile, and the yield is good. The boll is large and oval, with a boll weight of 4.1 grams and a lint percentage of 28.7%. It has wide adaptability, good yield stability and high yield potential. Second, fiber quality and disease resistance. Determined by the Cotton Fiber quality testing Center of the Ministry of Agriculture, 2.5% span 27.6mm, micronaire value 2.68, compared with 2005

First, the characteristics. The cotton fiber of this strain is natural green, the plant growth is steady, the leaf is medium size, the leaf warp is obvious, the plant tower type, the growth period is 122 days. The boll is prominent, precocious but not senile, and the yield is good. The boll is large and oval, with a boll weight of 4.1 grams and a lint percentage of 28.7%. It has wide adaptability, good yield stability and high yield potential.

Second, fiber quality and disease resistance. Determined by the Cotton Fiber quality testing Center of the Ministry of Agriculture, 2.5% span 27.6 mm, micronaire value 2.68, compared with the 2005 * * autonomous region approved green cotton "Xincai 7" fiber quality has been greatly improved, especially in cotton fiber strength.

Identified by the plant protection room of Shanxi Cotton Institute in 2006, Fusarium wilt index was 7.5%, Verticillium wilt index was 40.5%, and the field showed resistance to Fusarium wilt and not to Verticillium wilt. It has good tolerance to cotton aphid, but it is not insect-resistant cotton.

III. Key points of cultivation

1. It is appropriate to concentrate on continuous planting, and the planting distance with other cotton varieties should be kept at more than 500 meters to prevent hybridization and mixing.

2. The individual bearing of this variety is smaller than that of spring-sown white cotton, so the planting density should be 5-7% higher than that of white cotton, and the general density per mu should be 3000-4500 plants.

3. Insect pests should be controlled in time when they are found in the flower bud stage, and weeding and chemical control should be done in rainy years.

 
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