National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The reference evapotranspiration (ETo) is an important agrometeorological parameter used for various agricultural & meteorological applications. In present study daily reference evapotranspiration (ETo) was determined by Hargreaves method for seven districts of Marathwada region by using long period weather data (29-35 years). The results revealed that, ETo increases continuously from January and reaches to its maximum during May, with quite differences among the districts. The ETo reaches to its peak value during 28th April to 18th May at all the districts. During June ETo decreases sharply and remains low during July, August and with slight increase during September, then it decreases afterwards. The mean water requirement (ETc) for soybean crop during initial stage was found to be lower (2.09 to 2.29 mm day-1) then it increased during developmental stage (3.37 to 3.75 mm day-1) and mid season stage (4.90 to 5.32 mm day-1) again decreased during late-season stage (2.25 to 2.41 mm day-1). The total water requirement of soybean varies between Parbhani (457.81 mm) to Aurangabad (419.60 mm). The mean water requirement of cotton during initial stage (1.77 to 1.95 mm day-1), then after increases at developmental stage (3.42 to 3.78 mm day-1), and mid season stage (5.09 to 5.46 mm day-1) again during late season stage it decreases (1.94 to 2.09 mm day-1). The total water requirement of cotton varies between Parbhani (687.88 mm) and Aurangabad (638.80 mm).
Basanagouda R. F. and Suresh J. H., (2016) Identification of suitable method for crop assessment by estimating evapotranspration-a case study, International Journal of Agricultural Sciences, 8 (48): 2020-2023.
Bhere N. B. (2012) Study of Spatial and Temporal Variation of Evapotranspiration for Konkan Region of Maharashtra. M.Tech Thesis submitted to the Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth. Dapoli - 415 712 Maharashtra State (India).
Chavan M. L., U. M. Khodke and N. M. Changade (2009) Estimation of crop water requirement for irrigation planning in a semi arid region. International Journal of Agricultural Engineering, 2 (2): 236-242.
Hajare, H. V., N. S. Raman and J. Dharkar (2009) Evapotranspiration studies for Nagpur district. Transactions on Environment and Development, 1 (5): 94 -103.
Jensen, M. E., Burman, R. D. and Allen, R. G. (1990) Evapotranspiration and irrigation water requirements. Irrig. Drainage Div. American Society Civil Engineers, NY, 5 (1): 45-48.
Mehta R. (2015) Estimation of reference evapotranspiration and determination of crop water requirement of major crops of gujarat. M.Sc Agri. Thesis submitted to the B. A. College of Agriculture, Anand Agricultural University, Anand-388 110.
Rowshon, M. K., Amin, M. S. M., Mojid, M. and Yaji, M. (2013) Estimated evapotranspiration of rice based on pan evaporation as a surrogate to lysimeter measurement. Paddy Water Environment. 13 (4): 356-364. https://doi.org/10.1007/s10333-013-0356-4
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