Agriculture Reference
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at a low rate for a longer period at frequent intervals near the plant root zone through
low-pressure delivery system. It increased the availability of nutrients near the root
zone with a reduction in leaching losses. More nutrient availability, especially near the
root zone might have increased the translocation of photosynthesis to storage organs
of tomato resulting in an increased growth and hence increasing the yield. With intro-
duction of the LDPE sheet, the crop yield with 100% irrigation requirement is found
to be 48.4% higher than the furrow irrigated crop with mulching. This fact is true for
all other treatments with mulch and nonmulch conditions. Thus, the study represents
that irrigation schedules, methods of irrigation and mulching have signifi cant effect on
increasing the crop yield.
15.4.2 CROP WATER REQUIREMENTS
Crop water requirements for various treatments for both 2006 and 2007 are presented
in Tables 5 and 6, respectively. The mean data is presented in Table 7.
TABLE 5
Yield, water requirement and water-use-efficiency of tomato for different treatments
in 2006.
Treatments
Yield, t/ha
Water require-
ment, cm
Water-use-efficien-
cy, t/ha/cm
T
1
16.5
25.5
0.647
T
2
15.0
24.2
0.620
T
3
13.5
23.3
0.579
T
4
12.0
29.3
0.410
T
5
18.8
24.1
0.780
T
6
16.8
23.6
0.711
T
7
14.7
22.1
0.665
T
8
12.5
27.2
0.460
SE (m)
0.426
0.11
0.231
CD (0.05)
1.293
0.31
0.431
TABLE 6
Yield, water requirement and water-use-efficiency of tomato for different treatments
in 2007.
Treatments
Yield, t/ha
Water requirement, cm
Water-use-efficiency,
t/ha/cm
T
1
17.5
26.2
0.668
T
2
16.6
25.3
0.656
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