A simple nitrate submodel for trickle fertigated potatoes | Zendy

Narda N. K. | Zendy; Chawla J. K. | Zendy

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A simple nitrate submodel for trickle fertigated potatoes

Author(s) -

Narda N. K.,

Chawla J. K.

Publication year - 2002

Publication title -

irrigation and drainage

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 38

eISSN - 1531-0361

pISSN - 1531-0353

DOI - 10.1002/ird.65

Subject(s) - fertigation , trickle , nitrate , drip irrigation , nitrification , environmental science , mathematics , soil water , hydrology (agriculture) , irrigation , soil science , nitrogen , chemistry , agronomy , engineering , computer science , geotechnical engineering , organic chemistry , biology , world wide web

A simple nitrate dynamics submodel capable of predicting the spatial distribution of NO 3 ‐N within the soil profile following N fertigation with urea through trickle irrigation has been formulated and validated. The model utilizes a best‐fit nitrification function which, on a particular day, converts a given quantity of urea into nitrate and also incorporates the cumulative effect of previous fertigations. The daily updated values of NO 3 ‐N of soil layers have been obtained by deducting the N‐uptake by plants calculated on the basis of root length present. The predicted values of NO 3 ‐N have matched reasonably well with the observed data. Copyright © 2002 John Wiley & Sons, Ltd.

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