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- Title
Construction of Ideal Plant Architecture Characteristics for High Yield and Centralized Boll-Setting in Cotton Sown Directly After Barley Harvest.
- Authors
Liu, Zhenyu; Wang, Liyan; Zhao, Zixu; Chen, Chen; He, Run; Zhou, Mingyuan; Tian, Qiaofeng; Dong, Zhaodi; Chen, Yuan; Zhang, Xiang; Chen, Dehua
- Abstract
At present, the characteristics of plant population exhibiting both high yield and centralized boll-setting under the planting pattern of direct seeding of cotton after barley harvest in the Yangtze River basin are unclear. In this study, the cotton plant architecture was investigated from 2014 to 2015 with three varieties, which were directly sown after barley harvest and showed high yield and centralized boll-setting. The plant characteristics promoting both centralized boll-setting and high yield were identified. The results show that when the pure nitrogen amount was 150 kg hm−2, the seed cotton yield of Guoxin 12–1 was the highest. In 2015, the cotton plant with the SRF (pure nitrogen 150 kg hm−2) applied at a ratio of 100% at the seedling stage and 0 at the flowering stage showed the highest seed cotton yield. A significant positive correlation between the seed cotton yield and the ratios of boll setting from August 15 to August 30 to total bolls (RBT) was found (r2014 = 0.948**, r2015 = 0.976**). The plant architecture indexes of different cotton populations were analyzed and the relationships between those indexes and the yield and RBT were simulated using different equations with fitting coefficients above 0.85. In production, these findings can provide guidance for cotton growth management in order to achieve a higher yield and centralized boll-setting for directly sown cotton planted after harvesting barley.
- Subjects
COTTON; BARLEY; SEED yield; PLANT populations; COTTONSEED; WATERSHEDS; SOWING; CROP quality
- Publication
International Journal of Plant Production, 2022, Vol 16, Issue 2, p251
- ISSN
1735-6814
- Publication type
Article
- DOI
10.1007/s42106-022-00184-6