OPTIMUM WATER REQUIREMENT FOR TOMATO PRODUCTION UNDER SMALL-SCALE BASIN IRRIGATION SYSTEM
OPTIMUM WATER REQUIREMENT FOR TOMATO PRODUCTION UNDER SMALL-SCALE BASIN IRRIGATION SYSTEM
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Date
2000-05
Authors
TYA, TAHYE STEPHEN KWAYAS
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Abstract
Six different amounts of water : 97, 125, 150, 175, 200
and 220mm designated as treatments A, B, C, D, E and F were
applied to six basins of the same size (2m x 2m),
respectively. Tomato (Pevabo) variety was used as a trial
crop. Irrigation interval of 7 days was used throughout the
season. Three plot units were established according to slope
variation of the land with each unit having a different land
slope.
Double ring infiltrometer was used to determine the
infiltration rates of the plots and the values obtained
indicated the soil to be suitable for irrigation due to its
moderate intake rate and the soil textural classification. The
net seasonal water requirement for the crop under study was in
the range of 517.29 - 665.32mm for all the treatments. Optimum
net water requirement of 543.00mm and peak evapotranspiration
of 13.5mm/day were obtained from treatment B indicating a
fairly good result.
Tomato yields obtained for the treatments were generally
satisfactory.Treatment B gave the maximum yield of 14.225
t/ha, while the lowest yield of 9.272 t/ha was obtained for
treatment F. A total yield of 11.691 t/ha was obtained for all
the treatments. Treatment B was found to perform better than
all the other treatments in terms of crop yield revenue
generated, production cost, profit realized and cost-recovery.
Irrigation water cost of N6316.80 per hectare per season, that
is, N451.20 per hectare per irrigation was obtained for
treatment B which was moderate and much more economical since
maximum yield, highest income and profit were attained.
Treatment F had the lowest performance. Thus, treatment B
(125mm) amount of water applied performed above average and is
the most suitable and appropriate amount of water to be
applied for maximum crop yield for self sustenance and profit
making in a small scale irrigation system using 2m x 2m basin
sizes with streamsize provided by GX140 Honda irrigation pump.
Description
BEING A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL, AHMADU
BELLO UNIVERSITY, ZARIA, IN PARTIAL FULFILLMENT OF THE
REQUIREMENTS FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN
AGRICULTURAL ENGINEERING
JUNE, 2000
Keywords
OPTIMUM WATER,, TOMATO PRODUCTION,, SMALL-SCALE BASIN,, IRRIGATION SYSTEM