Work

Cotton N rate could be reduced further under the planting model of late sowing and high-density in the Yangtze River valley

Year: 2020

Type: article

Abstract: Background An optimal N rate is one of the basic determinants for high cotton yield. The purpose of this study was to determine the optimal N rate on a new cotton cropping pattern with late-sowing, high density and one-time fertilization at first flower in Yangtze River Valley China. A 2-year experiment was conducted in 2015 and 2016 with a randomized complete blocks design, and cotton growth process, yield and biomass accumulation were examined. Results The results showed that N rate had no effect on cotton growing progress or periods. Cotton yield was increased with N rate increasing from 120–180 kg ha− 1, while the yield was not increased when N was beyond 180 kg ha− 1, or even decreased (9–29%). Cotton had the highest biomass at N180 due to its highest accumulation speed during the fast accumulation period (FAP). Conclusions The result suggests that cotton N rate could be reduced further to be 180 kg ha− 1 under the new cropping pattern in Yangtze River Valley China.

Source: Journal of Cotton Research

DOI: 10.1186/s42397-020-00065-1

Authors: Xinghu SONG, Ying HUANG, Yuan YUAN, Atta Tung SHAHBAZ, Souliyanonh BIANGKHAM, Guozheng YANG

Institution: Huazhong Agricultural University

Language: English

Topic: Research in Cotton Cultivation

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: diamond

Funders: National Natural Science Foundation of China, Huazhong Agricultural University