scholarly journals Forecasting Crop Water Requirement By Et-Hs model For Arid and Semi Arid Region of Iran

2009 ◽  
pp. 529-536
Author(s):  
Payam Najafi ◽  
Kamran Asgari
Keyword(s):  
Arid Region ◽  
Water Requirement ◽  
Crop Water Requirement ◽  
Crop Water ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals An Optimal Irrigation Scheduling for Drip Irrigated Onion in A- Semi-Arid Region Using the Computer Program CROPWAT 8.0

2020 ◽  
pp. 96-105
Author(s):  
P. R. Anjitha Krishna ◽  
B. Maheshwara Babu ◽  
A. T. Dandekar ◽  
R. H. Rajkumar ◽  
G. Ramesh ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Arid Region ◽  
Root Zone ◽  
Management Strategies ◽  
Field Capacity ◽  
Irrigation Scheduling ◽  
Water Requirement ◽  
Estimation Model ◽  
Semi Arid Region ◽  
Semi Arid

Efficient utilization of available water resources requires appropriate management strategies considering the changing environmental conditions. The present study used a widely adopted crop water requirement estimation model-CROPWAT 8.0 for estimation and scheduling of irrigation requirement for onion crop grown under Vertisol in the Rabi season in the semi-arid region of Raichur district. The soil moisture at the root zone was not allowed to fall below 50% depletion. The irrigation events brought the soil moisture back to the field capacity level. The total water requirement for the 1st and 2nd seasons was 428.77 mm and 399.98 mm respectively at 90% irrigation efficiency. CROPWAT based two days irrigation scheduling scenario was found to be appropriate to maintain optimal soil moisture range within the crop root zone at different crop stages.

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