A comparison of 21 varieties of silage maize in Henan Province

doi:10.11686/cyxb2018539

Abstract

Abstract: The aim of this research was to select silage maize varieties suitable for planting in Henan province. A field experiment was set up with 21 varieties and five replications in a random design. Total herbage dry matter yield, grain yield, quality, and lodging resistance were recorded, and relationships among agronomic characters were examined. The results showed that: 1) The herbage dry matter yields and grain yields of Jingke silage 932, and Weike 106 varieties were the best. These two varieties also had better lodging resistance than other varieties. 2) In terms of quality, the crude protein (CP), ether extract (EE), and starch contents of Weike 106 and Jingke silage 932 varieties were higher, while neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were lower than other varieties, indicating their forage quality was also good. 3) There were positive, very significant correlations between herbage dry matter yield and the green leaf number, the green leaf weight, the plant height, the diameter and weight of stem, and the diameter and weight of the ear. Grain yield was found to have a very significant positive correlation with leaf number, leaf weight and stem weight, and ear weight. There was a positive, very significant correlation between total herbage dry matter yield and grain yield. Therefore, high grain yield can be obtained by selecting varieties with good quality of green leaves, larger stem diameter, larger ear size and greater plant height. The CP content was positively correlated with the contents of EE and starch. Considering all measured traits: herbage dry matter yield, grain yield, forage quality lodging resistance and other agronomic traits, the performance of Jingke silage 932 and Weike 106 varieties was superior to other varieties tested, and these two varieties can be recommended for whole crop silage and maize grain production in Henan province.

Key words: varieties, silage corn, yield, agronomic traits, nutritional composition

LIU Xiao, WANG Bo, ZHU Xiao-yan, GUO Xiao-jie, WANG Cheng-zhang, LI De-feng. A comparison of 21 varieties of silage maize in Henan Province[J]. Acta Prataculturae Sinica, 2019, 28(8): 49-60.

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