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- Title
Poultry Litter Band Placement Affects Accessibility and Conservation of Nutrients and Cotton Yield.
- Authors
Tewolde, Haile; Shankle, Mark W.; Way, Thomas R.; Pote, Daniel H.; Sistani, Karamat R.; Zhongqi He
- Abstract
Subsurface manure band placement relative to the plant row may affect crop growth and yield by affecting nutrient accessibility and conservation. The objective of this study was to determine whether poultry litter band placement affects cotton yield by affecting nutrient accessibility and conservation. Fresh broiler chicken litter (6.1 Mg ha-1 yr-1) applied in subsurface bands spaced 1.02 m apart (wide) (SSw) was compared against the same litter rate applied in subsurface (SSn) or surface (SFn) bands spaced 0.30 m apart (narrow). An unfertilized control (UFC) and a standard treatment fertilized with synthetic fertilizers (Std) were also included. No-till cotton was planted parallel to the litter bands at 1.02-m row spacing. The SSw treatment resulted in 14% more lint yield than the SSn treatment 2 yr after stopping litter applications. The SSw treatment also increased wheat cover crop biomass by -20% relative to the SSn treatment. The SSw treatment did not increase lint yield in the same season litter was applied (2010-2012), because the 6.1 Mg ha-1 litter (163 kg ha-1 total N) applied in subsurface bands spaced at 1.02 m exceeded the optimum. Higher tissue N and K concentrations and greater biomass in young (1 mo) cotton plants suggested that litter band accessibility in the early stages is greater with multiple rather than single bands per row. The results overall suggest applying litter in single "thick" subsurface band per row leads to greater conservation of the litter and its nutrients than splitting the litter into multiple "thinner" subsurface bands.
- Subjects
POULTRY manure; COTTON yields; BIOMASS; MANURES &; the environment; NITROGEN content of manures
- Publication
Agronomy Journal, 2018, Vol 110, Issue 2, p675
- ISSN
0002-1962
- Publication type
Article
- DOI
10.2134/agronj2017.07.0387