Measuring and modelling nitrogen transformations in a tile-drained Fragiaqualf under arable cropping 1 . A simple crop — season model

Autor:	P. E. H. Gregg, P. W. Gandar, I. H. Mohammed
Rok vydání:	1986
Předmět:	Irrigation Ecology Soil Science Soil science Plant Science Seasonality medicine.disease Tile drainage Alfisol medicine Environmental science Animal Science and Zoology Hordeum vulgare Arable land Drainage Agronomy and Crop Science Cropping
Zdroj:	New Zealand Journal of Agricultural Research. 29:613-620
ISSN:	1175-8775 0028-8233
DOI:	10.1080/00288233.1986.10430454
Popis:	A simple simulation model for nitrogen (N) transformations and fluxes during the growth of a barley crop is discussed. The model is based on data from small-scale experiments. It simulated the N transformations observed in a large-scale field study with fair success. This indicates that small-scale experiments, and models developed from them, are likely to have direct application on a field scale. Use of the model is illustrated by simulation of the effect of excessive rain early in the season on crop N uptake. The value of the model in determining the fertiliser N requirements of crops is also discussed.
Databáze:	OpenAIRE
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