Specific contributions of decaying alfalfa roots to nitrate leaching in a Kalamazoo loam soil


Kavdir Y. , Rasse D., Smucker A.

AGRICULTURE ECOSYSTEMS & ENVIRONMENT, cilt.109, ss.97-106, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 109
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.agee.2005.02.020
  • Dergi Adı: AGRICULTURE ECOSYSTEMS & ENVIRONMENT
  • Sayfa Sayıları: ss.97-106

Özet

Alfalfa (Medicago sativa L.) contributes 430 million kg N year(-1) to the US Corn-Belt soils, according to a 1991 survey. Minimizing leaching losses from these very large N inputs requires a better understanding of the specific root dynamics that relate to the shoot-borne nitrates which have been reported to develop throughout many soil profiles. The objective of the present study was to determine the impact of decaying alfalfa roots on nitrate inputs to soils and on soil hydraulic conductivity properties which affect nitrate leaching.