1 research outputs found
Not Available
Not AvailableA study was conducted to develop optimal irrigation schedules and crop water
production function for cassava in the three major growing areas of India, viz.,
Salem (Tamil Nadu), Thiruvananthapuram (Kerala), and West Godavari
(Andhra Pradesh). The irrigation schedules and water requirements weresimulated using CROPWAT, and the model result was verified with field
values in Thiruvananthapuram, one of the study areas. The results indicated
the wider applicability of CROPWAT in calculating water requirement as well
as developing irrigation schedules for cassava irrespective of the agro-climatic
conditions. The optimal gross irrigation requirement simulated by CROPWAT
was 362, 610, and 703 mm in Thiruvananthapuram, West Godavari, and
Salem, respectively, based on the soil, crop and climatic parameters.The
optimal schedules were also developed in the study locations using
CROPWAT, and it can be used for further irrigation practices and plans to
maximize water productivity. Also, the field experimental data in
Thiruvananthapuram showed a quadratic relation between crop water
requirement and yield (R = 0.86).The derived crop water production function
(CWPF), provided yield of 39
× 10 kg ha of cassava corresponding to the simulated gross irrigation
requirement of 362 mm in Thiruvananthapuram. Thus the CWPF together with
the optimal schedules is a useful tool for water managers and farmers to
develop appropriate irrigation plans in advance to mitigate the water scarcity
as the result of climate change
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The results indicated
the wider applicability of CROPWAT in calculating water requirement as well
as developing irrigation schedules for cassava irrespective of the agro-climatic
conditions. The optimal gross irrigation requirement simulated by CROPWAT
was 362, 610, and 703 mm in Thiruvananthapuram, West Godavari, and
Salem, respectively, based on the soil, crop and climatic parameters. The
optimal schedules were also developed in the study locations using
CROPWAT, and it can be used for further irrigation practices and plans to
maximize water productivity. Also, the field experimental data in
Thiruvananthapuram showed a quadratic relation between crop water
requirement and yield (R = 0.86). The derived crop water production function
(CWPF), provided yield of 39
× 103 kg ha of cassava corresponding to the simulated gross irrigation
requirement of 362 mm in Thiruvananthapuram. Thus the CWPF together with
the optimal schedules is a useful tool for water managers and farmers to
develop appropriate irrigation plans in advance to mitigate the water scarcityas aresult of climate change.Not Availabl