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Evapotranspiration of Onion in Sahelian Niger

Published online by Cambridge University Press:  03 October 2008

Chit R. K. Prashar ,
Govind C. Sharma  and
Mohamadou Gandah
Chit R. K. Prashar
Affiliation:
International Program, University of Nebraska, Lincoln, NE 68587, USA
Govind C. Sharma*
Affiliation:
Department of Plant and Soil Science, Alabama A & M University, Normal AL 35762, USA
Mohamadou Gandah
Affiliation:
Niger National Institute of Agricultural Research (INRAN), Niamey, Niger
*
‡Author to whom correspondence should be addressed.
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Summary

Irrigation responses of three locally adapted onion cultivars were studied in drainage type lysimeters and under field conditions on a deep sandy loam soil, free of salinity problems, at Maradi in Niger. Evapotranspiration (Et) was established by the water balance method, and used to establish the rate of water use. The peak rate of water use was 7.5 mm per day during the bulb formation stage. Irrigating onions when the available soil moisture to a depth of 20 cm had been depleted by 40% increased the yield more than irrigation at 60 or 80% depletion. The mean yield from plots receiving frequent irrigation was 33 t ha−1.

Evapotranspiratión de la cebolla en el sahel nigeriano

Type
Research Article
Information
Experimental Agriculture , Volume 30 , Issue 4 , October 1994 , pp. 473 - 476
Copyright
Copyright © Cambridge University Press 1994

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References

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