Abstract Efficient N-fertiliser management during the
corn (Zea mays L.) phase in corn-forage rotation requires
information on temporal dynamics of N release
from forage biomass. The influence of forage phase, in
corn-forage rotation, and no- versus conventional-till
on (1) in situ temporal dynamics of soil nitrate-N (NO3-
N) during corn phase and (2) corn grain yield was investigated
in this study. The data used were collected
from a crop rotation (corn-forage) experiment, with superimposed
tillage treatments, established on a silt
loam soil in 1988 and continued until 1994. The cropping
treatments were continuous conventionally cultivated
(CT) corn, rotations involving corn and forages
(alfalfa, Medicago sativa L.; and bromegrass, Bromus
Abstract Efficient N-fertiliser management during thecorn (Zea mays L.) phase in corn-forage rotation requiresinformation on temporal dynamics of N releasefrom forage biomass. The influence of forage phase, incorn-forage rotation, and no- versus conventional-tillon (1) in situ temporal dynamics of soil nitrate-N (NO3-N) during corn phase and (2) corn grain yield was investigatedin this study. The data used were collectedfrom a crop rotation (corn-forage) experiment, with superimposedtillage treatments, established on a siltloam soil in 1988 and continued until 1994. The croppingtreatments were continuous conventionally cultivated(CT) corn, rotations involving corn and forages(alfalfa, Medicago sativa L.; and bromegrass, Bromus
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