RSS
   

003l
006l
008l
009l
010l
014l
015l
Cattles1
padytl
pestaffectedredgram1
Poultry1l
Sheep1l
Soil erosionl

   

  Water harvesting and recycling t

Water harvesting and recycling through farm ponds: A climate resilient technology for rainfed regions

Water harvesting and recycling through farm ponds is an important strategy for coping with floods and droughts in the same season. The adaptation potential of this technology was tested at Gunegal Research Farm in a 14.5 ha catchment for 3 years. The farm pond was constructed with well-designed grass waterways connecting the silt trap and inlet of the structure. The hydrological water balance of unlined farm pond in alfisols indicated that the seepage losses accounted for 40-60% and evaporation losses were 4-5% and the remaining water was used for supplemental irrigation in kharif and for cultivating rabi vegetable. The test crops studied for water productivity were groundnut (ICGV91114) and Okra (ArkaAnamica) for three years (2008-10) in kharif and carrot was grown in rabi. The rain water productivity was calculated for both the crops.The mean rain water productivity in

groundnut was increased by 15% over the rainfed (3.75 kg/ha mm) and 21% in Okra respectively with supplemental irrigation of 50 mm during crop critical stages through sprinklers. The production economics of different crops taking ground nut and Okra in kharif and carrot in rabi integrated with fish were worked out. The study revealed that the production system of groundnut (kharif)+carrot (rabi)+fish + environmental benefits (includes cost of the silt removed from the catchment and cost of nutrients) was the best for alfisols with the B:C ratio of 28.05 for unlined and 11.02 for lined farm pond. The payback period of the investment is one year in both the cases. The data and experience generated in this project is being used by Govt. of Andhra Pradesh for implementing farm ponds scheme under RADP and NHM.

 

 
   
©Central Research Institute for Dryland Agriculture, All Rights Reserved