Legume proportion, poultry litter, and tillage effects on cover crop decomposition

Hanna J. Poffenbarger, Steven B. Mirsky, Raymond R. Weil, Matthew Kramer, John Thomas Spargo, Michel A. Cavigelli

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Cover crop residues and animal waste products can be important sources of N in cropping systems. The objectives of this research were to determine, under field conditions, the effects of hairy vetch (legume; Vicia villosa Roth)/cereal rye (grass; Secale cereale L.) proportion and pelletized poultry litter (PPL) management (no PPL, subsurface banded, broadcast, or incorporated with tillage) on the extent and rate of cover crop residue mass loss and N release during a subsequent growing season. Measuring cover crop residues placed in mesh litter bags, or residues+PPL in litter bags for the broadcast treatment, we found that increasing hairy vetch proportion led to greater proportional mass loss and N release (cumulative mass loss ranged from 40 to 80% and N release ranged from 0-90% of initial), as well as greater rates of mass loss in all PPL treatments. Nitrogen release rates were generally unaffected by species proportions; however, N release rates for pure cereal rye residue in all PPL treatments except broadcast could not be estimated due to minimal N release. Incorporation of residues and PPL increased the rates of mass loss and N release for pure hairy vetch and hairy vetch-cereal rye mixtures. Although broadcast PPL application and incorporation affected decomposition patterns, subsurface banded PPL application did not. Results suggest that cereal rye provides the greatest mulch persistence, hairy vetch provides the greatest N release, and mixtures provide moderate delivery of these two services. Subsurface banding is the recommended PPL application method to conserve surface residues.

Original languageEnglish (US)
Pages (from-to)2083-2096
Number of pages14
JournalAgronomy Journal
Volume107
Issue number6
DOIs
StatePublished - Jan 1 2015

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poultry manure
cover crops
tillage
Vicia villosa
legumes
degradation
rye
crop residues
bags
animal wastes
Secale cereale
application methods
cropping systems
growing season
grasses
nitrogen

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science

Cite this

Poffenbarger, H. J., Mirsky, S. B., Weil, R. R., Kramer, M., Spargo, J. T., & Cavigelli, M. A. (2015). Legume proportion, poultry litter, and tillage effects on cover crop decomposition. Agronomy Journal, 107(6), 2083-2096. https://doi.org/10.2134/agronj15.0065
Poffenbarger, Hanna J. ; Mirsky, Steven B. ; Weil, Raymond R. ; Kramer, Matthew ; Spargo, John Thomas ; Cavigelli, Michel A. / Legume proportion, poultry litter, and tillage effects on cover crop decomposition. In: Agronomy Journal. 2015 ; Vol. 107, No. 6. pp. 2083-2096.
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Poffenbarger, HJ, Mirsky, SB, Weil, RR, Kramer, M, Spargo, JT & Cavigelli, MA 2015, 'Legume proportion, poultry litter, and tillage effects on cover crop decomposition', Agronomy Journal, vol. 107, no. 6, pp. 2083-2096. https://doi.org/10.2134/agronj15.0065

Legume proportion, poultry litter, and tillage effects on cover crop decomposition. / Poffenbarger, Hanna J.; Mirsky, Steven B.; Weil, Raymond R.; Kramer, Matthew; Spargo, John Thomas; Cavigelli, Michel A.

In: Agronomy Journal, Vol. 107, No. 6, 01.01.2015, p. 2083-2096.

Research output: Contribution to journalArticle

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