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- Title
Sulfur Fertilization and Sulfur Sufficiency Range for Contemporary Cotton Cultivars with High Yielding Potentials.
- Authors
Yu, Jianming; Yin, Xinhua; Raper, Tyson B.; Jagadamma, Sindhu
- Abstract
Information is lacking on sulfur (S) nutrition characteristics of contemporary cotton (Gossypium hirsutum L.) cultivars and their responses to S fertilization in the United States. The objective of this study was to develop S fertilizer recommendations and S sufficiency ranges for contemporary cotton cultivars with high yielding potentials. Sixteen field trials were conducted on cotton across west Tennessee during 2014–2016. Five S application rates of 0, 11.2, 22.4, 33.6, 44.8 kg ha−1 were examined in a randomized complete block design with four replicates at each location-year. Lint yield was significantly increased by 8.5–9.8% with S applications of 11.2, 22.4, 33.6, 44.8 kg ha−1 in the soils with low S. Soil residual S level after harvest was significantly enhanced only at the highest rate of 44.8 kg S ha−1. However, lint yield or soil residual S did not respond to S application in the medium S soils. Leaf S concentrations of 3.9–8.2 g kg−1 at late bloom were needed for 95–100% of the highest yield in the low S soils, which were different from the current S sufficiency range of 3.0–9.0 g kg−1 being used in diagnosing cotton S nutrition. In conclusion, application of 11.2 kg S ha−1 is beneficial and adequate for cotton grown on low S soils. The S sufficiency range at late bloom was narrower for contemporary cotton cultivars than conventional cotton varieties. Sulfur management needs to be more accurate for contemporary cotton cultivars due to their narrower S sufficiency range.
- Subjects
TENNESSEE; CULTIVARS; SULFUR; COTTON quality; COTTON growing; COTTON; COTTON varieties; BLOCK designs
- Publication
International Journal of Plant Production, 2019, Vol 13, Issue 4, p369
- ISSN
1735-6814
- Publication type
Article
- DOI
10.1007/s42106-019-00061-9