4 - Central Institute of Brackishwater Aquaculture
4 - Central Institute of Brackishwater Aquaculture
4 - Central Institute of Brackishwater Aquaculture
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National Workshop-cum-Training on Bloinformatlcs and Inforrnatlon Management in <strong>Aquaculture</strong><br />
Table 2. Summary statistics <strong>of</strong> variables involved in the stochastic production<br />
frontier and technical inefficiency models for carp pond culture in Kolleru Lake,<br />
Andhra Pradesh, India.<br />
--<br />
-- - - - -.<br />
Variable Mean SD Minimu Maximum<br />
m<br />
Output (ton/ha) 10.630 1.470 7.400 14.800<br />
Organic manure (tonlha.) 22.790 5.100 3.700 37.100<br />
Inorganic fertilizer (kg/ha.) 1507.250 501.640 617.750 3953.600<br />
Lime (kg/ ha.) 1075.130 379.700 494.200 2471.000<br />
Stocking weight (kg/ ha.) 1939.000 512.450 474.430 3059.100<br />
Chemicals and Drugs (Rs';/<br />
ha.)<br />
3161.61 1409.95 432.00 8159.00<br />
Feed (ton/ha.) 27.650 5.760 13.700 44.500<br />
Labour (mandayslha.) 88.400 53.300 5.0 242.0<br />
Water management cost<br />
(Rs./ ha.)<br />
Farm-specific<br />
Religion (0 or 1) .99 .I16 0 1<br />
Caste (1 or 2 or 3) 2.50 .698 I 3<br />
Age (year) 42-07 5.703 30 80<br />
No <strong>of</strong> children (no.) 2.36 1.016 0 5<br />
Education (no. <strong>of</strong> years in<br />
school)<br />
Experience (years) 10.42 5.141 1 20<br />
Primary occupation (0 or 1) 0.79 0.41 0 1<br />
Pond size (ha.) 8.7 8.6 0.8 61.0<br />
Renovation (0 or 1) .83 .37 0 1<br />
Asset cost (Rs./ha.)<br />
Ownership type (0 or 1) 0.92 0.27 0 1<br />
Source <strong>of</strong> water (0 or 1) 0.96 0.19 0 1<br />
Depth <strong>of</strong> water (meter) 2.44 , 0.35 1.68 3.35<br />
Source <strong>of</strong> seed (0 or 1) 0.66 0.475 0 1<br />
Advice taken from (1 or 2 or<br />
3 or 4)<br />
3.38 0.85 1 4<br />
Loan (0 or 1) 0.30 0.46 0 1<br />
Harvesting technique (0 or 1) 0.95 0.22 0 1<br />
Method <strong>of</strong> application <strong>of</strong> drug<br />
(1 or 2 or 3)<br />
2.57 -51 1 3