Agriculture Reference
In-Depth Information
TABLE 1
Effects of drip irrigation, dripper spacing and fertigation on the performance of chili.
Treat-
ment
Yield
(Kg/m 2 )
Income
(Rs/m 2 )
Yield in-
creased by
drip irriga-
tion against
flood irriga-
tion (%)
Disease
incidence
(%)
Weed
inci-
dence
(%)
Saving
of water
(%)
Time
of total
irriga-
tion
(hr.)
Irrigation method
Drip
10.50
67.00
60.30
05.00
32.40
40
10
6.55
11.70
20.00
100.00
40
Flood
Dripper spacing
30 cm
10.40
65.60
58.77
08.00
35.60
30
10
45 cm
9.20
48.80
40.45
05.00
32.30
35
10
60 cm
8.22
35.08
25.49
04.00
22.70
40
10
Nitrogen
Ferti-
gation
10.20
62.80
55.72
04.50
16.40
35
10
Top
dress-
ing
7.70
27.80
17.55
15.50
31.50
30
10
CD
(5%)
Average selling price of Rs. 14/Kg; Total cost of cultivation of Rs. 80/m 2 .
Rs. = Indian rupee = US$0.0167
13.3.2 EFFECT OF DRIPPER SPACING
The dripper spacing at 30 cm recorded significantly positive effect on yield and net
returns as compared to 45 cm spacing. The yield was 58.77% greater in chili at 30 cm
wider dipper spacing as compared to flood irrigation method. However, wider drip-
per spacing (60 cm) saved more water, total irrigation time, minimized the diseases
and weeds incidence as compared to closer dripper spacing in each years (Table 1).
This improvement can be due to the fact that closer spacing accommodates higher
plant population, resulting more number of fruits, which increases total yield and net
returns. These findings are in agreement with the other investigators [5, 11, 16].
13.3.3. EFFECT OF NITROGEN
The maximum yield in chili (10.20 kg/m 2 ), net income, weed incidence, minimal dis-
eases and saved water and total irrigation time as compared to top dressing method
during each year (Table 1). These benefits resulted due to fertigation. All the yield
components were significantly influenced by nitrogen fertigation. The fertigation of
nitrogen recorded 34.46% higher yield compared to top dressing method. The results
 
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