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Legume Cover Crops Reduce Poultry Litter Application Requirements in Organic Systems

Type de document
journalArticle
Langue source
-- Langue source --
Titre
Legume Cover Crops Reduce Poultry Litter Application Requirements in Organic Systems
Titre français
Titre anglais
Auteur(s)
  • ACKROYD Victoria J.
  • CAVIGELLI Michel A.
  • SPARGO John T.
  • DAVIS Brian
  • GARST Grace
  • MIRSKY Steven B.
Editeur(s)
Autre(s)
Id
BAEF2GND
Version
2554
Url zotero
https://www.zotero.org/groups/2567444/items/BAEF2GND
Date ajout
12 mars 2021 19:55
Date modification
12 mars 2021 19:55
Résumé
Organic farmers are challenged by increasing soil P levels resulting from the use of manure to meet cash crop N needs. The use of a legume cover crop may address this challenge. In a 2-yr study at three organic production sites in Maryland, we examined the combination of a winter annual legume cover crop (hairy vetch, crimson clover, Austrian winter pea, and a no-cover control) at three poultry litter (PL) application rates (to meet the N requirement of corn, to replace P removed by corn grain harvest, and a no-PL control). Cover crop biomass varied by site and by year, ranging from about 600 to 6100 kg ha–1 for crimson clover. Cover crop N accumulation ranged from 15 to 169 kg N ha–1. Corn yields, which ranged from 2.9 to 14.2 Mg ha–1, tended to be lowest in the control (0 PL) no-cover treatments and similar in the N-based and P-based treatments irrespective of the cover crop species. These results indicate that when legume cover crops are used, PL can be applied at a P-replacement rate on sites with a history of PL application to meet crop production and environmental stewardship goals. Core Ideas Legume cover crop N accumulation ranged from 15 to 169 kg N ha–1. Corn yield after legume crops was not affected by poultry litter application rate. Legume cover crops provide opportunity to reduce poultry litter application rates.
Note
None
CRAW tags
  • AB - Spécifique
  • FREDO effluents et litière
  • FREDO fertilisation
  • GEO Etats-Unis
  • couvert végétal
  • fumure
  • légumineuses
WEB tags
Titre de la publication
Agronomy Journal
Volume
111
Pages
2361-2369
Date caractères
2019
Date publication
1 janvier 2019
Doi
https://doi.org/10.2134/agronj2018.09.0622 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique
Issn
1435-0645 L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.
Url publication
https://acsess.onlinelibrary.wiley.com/doi/abs/10.2134/agronj2018.09.0622