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Recovery Measures and Field Management Strategies After Hailstone Damage in Upland Cotton
NIE Hushuai# 1,SU Ying# 1,LI Le 2,DAI Maohua 2,WANG Dingwei 2,SU Beibei 2,XIAO Feng 2,HUA Jinping 2 *
1.College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193;College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193;College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193;Institute of Dry Farming, Hebei Academy of Agricultural and Forestry Sciences, Hengshui, 053000;Guoxin Seed Company, Limited, Hejian, 062450;Guoxin Seed Company, Limited, Hejian, 062450;Guoxin Seed Company, Limited, Hejian, 062450;College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193
2.
*Correspondence author
#Submitted by
Subject:
Funding: This research was supported by a grant from National Key R & D Program for Crop Breeding (No.Project No. 2018YFD0100303)
Opened online:26 November 2021
Accepted by: none
Citation: NIE Hushuai#,SU Ying#,LI Le.Recovery Measures and Field Management Strategies After Hailstone Damage in Upland Cotton[OL]. [26 November 2021] http://en.paper.edu.cn/en_releasepaper/content/4755796
 
 
Hailstorm might damage cotton plants severely and cause heavy economic loss in field production. It occurred often in Yellow River Basin Cotton Region and Northwest Inland Cotton Area in China. In 2015 and 2016, there were three times\' hailstorm damaged our field experiments of upland cotton (Gossypium hirsutum L.) in Hebei Province during seedling and bud periods. To reduce losses, we started the study to evaluate the damage effects of hailstone on plant architecture, and performed serials strategies to recover the plants and to rescue the experiments. Based on evaluating the hailstone damage, we fertilized 112.50 kg/ha Urea fertilizer (N content ≥ 46.4%) and intertilled the field timely. The recovery of plant individuals sprouted new buds and many new leaves after 12 DAH. Then the unnecessary shoots were pruned to adjust the development of fruit branches. Normally three new sympodia branches (NSB) in the major stem were reserved and eight subsequent emerging boll branches (EBB) in cotton plants. Five accessions with varied recovery ability and different yield potential were sampled to compare the yield and quality after hail damage. Among them, Sumian 20, 11-0710 and 11-0516 increased, while the other two accessions decreased relative to the normal production without hail damage. BC and RIL populations of upland cotton were used to evaluate the damage ratio of yield and quality, which resulted in yield loss ranged 13.45%-20.27%. Fiber length, fibre elongation, fibre uniformity, and fiber strength decreased slightly in the five accessions and two populations. These results proved that the cotton plants can compensate by proper field managements, and remedial output could be obtained after hail damage.
Keywords:Upland cotton; Hail damage; Recovery strategies; Fiber quality; Yield
 
 
 

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