Tank Water and Crop Choice in Ramanathapuram
Periyakulam village in Ramanathapuram district has 240 households and depends on three interlinked tanks. Normal annual rainfall is 900 mm; this year the district recorded 480 mm, and the tanks received only 38% of their usual inflow. Groundwater fell from 9 m to 18 m. The village has 310 acres under paddy, which needs about 1,200 mm of water, and 40 acres under pulses. The panchayat water committee must advise farmers before the next sowing. It has ₹6 lakh from MGNREGA for water works, but labour is available only for 20 days before the sowing window closes. The nearest canal is 14 km away and carries water only in August. Farmers want to keep all 310 acres under paddy; the revenue officer reports that last year 60 acres failed and 45 households migrated.
1. Recommend a cropping plan for the coming season and justify it with the numbers given.
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The tank inflow is only 38% of normal, while paddy needs about 1,200 mm. Keeping all 310 acres under paddy would repeat last year's failure, when 60 acres were lost and 45 households migrated. The committee should cut the paddy area sharply - for example to about 120-150 acres on the best-connected tank ayacut - and use the remaining land for short-duration pulses and millets, which need far less water. A possible plan is 140 acres paddy, 90 acres pulses, 50 acres millets and 30 acres left fallow or used for fodder. The plan should be decided field by field, not equally: fields farthest from the tank channels should go to low-water crops first. The canal is not a solution this season because it is 14 km away and arrives only in August, after the sowing window. The aim is to protect household food and income, not to maximise one crop's acreage.
2. Which water works should be taken up with ₹6 lakh and 20 days of labour? Give reasons for your choice.
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With only 20 days before sowing, the committee should choose labour-intensive works that give quick returns in the same tanks: desilting feeder channels, repairing tank bunds and sluices, and digging recharge pits or contour trenches in the catchment. These works reduce seepage and capture whatever rain falls, so they make the 38% inflow go further. They also use local labour within the available window. The committee should not start a new permanent structure or a long pipeline, because it cannot be completed before sowing; unfinished work would waste both money and labour. It should also avoid work that benefits only the fields of influential farmers. A simple map of channels and a written list of works, approved by the gram sabha, would let the village check that the money was spent on the common tank system rather than on private land.
3. Why is the distant canal an unreliable answer to this village's problem?
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The canal is 14 km away and carries water only in August, but the sowing decision must be made now. A canal that arrives late cannot support paddy nurseries or early crop establishment, and its supply depends on releases elsewhere. If the village plans on canal water and it fails, the same 60-acre loss and migration may recur. The village should treat canal water as a bonus, not as the base of the plan.