MICRO IRRIGATION BASED OPTIMAL CROP PLAN FOR RABI SEASON FOR SURGI LIFT IRRIGATION SYSTEM
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Date
2018
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Indira Gandhi Krishi Vishwavidyalaya, Raipur
Abstract
The study entitled “Micro Irrigation Based Optimal Crop Plan for Rabi Season for Surgi Lift Irrigation System” was conducted at Surgi village, Rajnandgaon (C.G.) with 7 farmer’s group having 50 members and total 31.575 haarea. The different Rabi crop like tomato, okra, brinjal, bitter gourd, bottle gourd, pumpkin and maize sown to the 5.196 ha area was irrigated by drip irrigation systems.Water is lifted through 2 no. of 5 Hp open well submersible pump in Kharkhara River, lifted water is passing to the junction box, 3 no. of non-return valve are placed in the junction box. The water is conveyance through the 200mm PVC pipe with 2110 m length. PVC pipe is placed 3feet wide and 2 feet depth buried channel. 8 no. of air release valve are placed to the PVC pipe. The distance
between air release valves is 300 m. The conveyance water is discharge to the Tutsi tank; distance between Kharkhara River to the Tutsi tank is 2 km.
Hydraulic parameters of lift irrigation system were studied for 14 l sec-1 pump discharge was found 13.90 l sec-1, when one pump operated, 28.00 l sec-1 was found when both pump operate. Friction head through the pipe was found 8.50 m and the total head was found 15.54 m.The average volume of tulsi tank was found 16,268 m3.
The study site of soil was tested in the laboratory and found Sandy loam soil.Hydraulic parameters of drip irrigation system were studied for 1.3 l h-1 inline emitters at 0.8 and 1.0 kg cm-2 pressures. The horizontal and vertical water front advance of 1.3 l h-1 drippers at the pressure of 0.8 and 1.0 kg cm-2 were recorded at elapsed time 30, 60, 90, 120 and 150 minutes.On the basis of recorded data, maximum horizontal wetting front advance was observed to be4.0, 7.0, 9.5, 11.5 and 13.5 cm respectively and maximum vertical wetting front advance 7.5, 13.1, 16.5, 20.2 and 23.5cm respectively from 1.3 lh-1 emitters at 0.8 kgcm-2 pressure. Similarly at 1.0 kg cm-2 pressure, the maximum horizontal wetting front advance was observed to be as 5.1, 8.2, 10.3, 13.0 and 15.5 cm respectively and maximum vertical wetting front advance 9.2, 15.0, 20.3, 23.8 and 27.0 cm respectively. Based on the result obtained wetting pattern of 1.3 lh-1 inline emitter was better at 1.0 kg cm-2 than 0.8 kg cm-2 operating pressure. Based on the result obtained wetting pattern of 1.3 lh-1 inline emitter was better at 1.0 kg cm-2 than 0.8 kg cm-2 operating pressure.
Average emitter discharge, Emission uniformity (EUf), uniformity coefficient (Us), Coefficient of manufacture’s variation (Cv), Emitter flow variation (Qavg), Application efficiency and Distribution efficiency at 0.8 kg cm-2 operating pressure were found to be 1.06 l h-1, 87.53%, 86.75%, 0.13, 37.70, 71.61% and 88.18% respectively. Similarly at 1.0 kg cm-2 operating pressure the values of above parameters were found to be 1.15 l h-1, 90.54%, 88.48%, 0.11, 20.0, 72.78% and 89.90% respectively.Hydraulic performance of drip irrigation system found good and needs to be operated at 1.0 kg cm-2 pressure for 1.3 l h-1 inline emitter.
Yield of tomato, okra, brinjal, bitter gourd, bottle gourd, pumpkin and maize was found90.0, 63.3, 32.8, 15.5, 120.0, 190.2 and 85.5 q ha-1respectivelyunder 100% ETc.The highest water use efficiency 6.75 q ha-1 cm-1 was found in pumpkin crop and lowest water use efficiency 0.44 q ha-1 cm-1 was found in bitter gourd crop under 100% ETc.The total inflow in tank was 609026.3 m3 and total outflow into tank was 18722.2 m3, water storage into the tank was 590304.10 m3during the study period.The water loss through evaporation was found 15.06%, water loss through seepage and percolation loss was found 36.65% and water used for irrigation purposes was found 48.30% from the tank.
Based on the result obtained it is concluded that the planning of irrigation for the major crops grown in Surgi village during rabiseason with the available water and attain maximum yield, so more crop is replicated to the other area.The development of crop plan will be helpful for scientific and sustainable farming in the area.
Description
MICRO IRRIGATION BASED OPTIMAL CROP PLAN FOR
RABI SEASON FOR SURGI LIFT IRRIGATION SYSTEM
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