• Rathod Amishaben Dilipbhai
• Kashyap Gohil

In any nation, the development of agriculture and the economy depends on land and water. Without water, it would be impossible for people to irrigate their crops; thus, farmers would need to increase the amount of food they produced from already-cultivated land, especially in India, in order to feed the world’s rapidly growing population. To properly manage irrigation, crop water requirements for different crops and different management levels must be estimated in order to achieve maximum use of groundwater resources. The aim of the current study is to evaluate the effective rainfall and crop water requirements using CROPWAT 8.0. The Vansda taluka of Gujarat’s Navsari district is the research area that is being taken into consideration here. The crops used for Vansda taluka calculations of crop water requirements include Rice, Sugarcane, Brinjal, Ladyfinger, and Pigeon pea. In this work, reference evapotranspiration (ETo) was computed using the FAO Penman Monteith method and effective rainfall was calculated using the USDA SCS method. The data gathered from farmers and small amounts of data from the STATE WATER DATA CENTER in Gandhinagar were used to establish the water requirements of each crop. In this study, ETo ranged from 4.77 to 11.34 mm/day. Maximum effective rainfall occurred in year 2012 (87.4mm). Crop water requirements were determined for this study from 2012 to 2016. Rice irrigation requirements range from 491.5 to 1032.6 mm/Dec, with June typically requiring the most water. The middle of May required 1039.3 to 2591.4 mm/Dec of irrigation for Sugarcane. Brinjal required irrigation from 303.8 to 1030.8 mm/Dec, with a high water demand in the final stages of March. For Ladyfinger Irrigation requirements Range from 288.1 to 988.5 mm/Dec. for Pigeon pea Irrigation Requirements range from 181.5 to 408.2 mm/Dec in the last stages, with the month of September requiring the most water

Effective Rainfall, Crop Water Requirement, Irrigation Scheduling, CROPWAT 8.0.

"Evaluation of Crop Water Requirement and Effective Rainfall Using CROPWAT 8.0.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 3, page no.g620-g632, March-2023, Available :http://www.jetir.org/papers/JETIR2303689.pdf

"Evaluation of Crop Water Requirement and Effective Rainfall Using CROPWAT 8.0.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 3, page no. ppg620-g632, March-2023, Available at : http://www.jetir.org/papers/JETIR2303689.pdf