Crop coefficients for prediction of evapotranspiration and irrigation requirements of drip irrigated castor (Ricinus communis L.)

CROP COEFFICIENTS FOR PREDICTION OF DRIP IRRIGATED CASTOR


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Authors

  • B R KUMAR Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh
  • V PRAVEEN RAO Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh
  • V RAMULU Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh
  • M UMA DEVI Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh
  • K AVIL KUMAR Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh
  • P RAGHUVEER RAO Water Technology Centre, Acharya N.G. Ranga Agril. University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh

https://doi.org/10.56739/jor.v30i1.142805

Keywords:

Castor, Crop coefficient, Drip irrigation, Net irrigation, Reference evapotranspiration

Abstract

A study was conducted on castor (Ricinus communis L.) in winter 2009-10 at Agricultural College Farm, Rajendranagar, Hyderabad with different drip irrigation schedules at 40, 60 and 80% pan evaporation replenishment levels either kept constant throughout the crop life or combinations at vegetative, flowering and development stages were compared with surface check basin method, irrigated at 0.8 IW/CPE ratio to derive crop coefficients (Kc) for drip irrigated castor. The Kc values were also used to suggest methodology for determination of periodic and peak irrigation requirements of castor for field application. The Kc values worked out varied between 0.345 to 0.822 and the average Kc values for different phenological phases of germination and establishment, vegetative, flowering, capsule development,seed filling and maturity periods were 0.449, 0.626,0.771, 0.940, 0.677 and 0.38, respectively. The peak irrigation, net irrigation and gross irrigation water requirements worked out were 808.7 m , 32.11cm and 3 3567.4 m , respectively for drip irrigated castor.

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References

Allen R G, Pereira L S, Raes D and Smith M 1998. Crop evapotranspiration-Guidelines for computing crop water requirements. Irrigation and Drainage Paper No. 56, FAO, Rome.

Dastane N G 1974. Effective Rainfall. Irrigation and Drainage Paper No. 25. FAO, Rome.

Doorenbos J and Pruitt W O 1977. Guidelines for predicting crop water requirements. Irrigation and Drainage Paper No. 24, FAO, Rome, Italy, p.144.

Patel K S, Patel P G, Patel G N, Patel J K and Pathak H C 2004. Feasibility of drip irrigation in castor (Ricinus communis L.) under sandy loam soil of north Gujarat. Journal of Oilseeds Research, 21: 194 - 195.

Praveen Rao V and Raikhelkar S V 1994. Evapotranspiration of sesame in relation to pan evaporation. Indian Journal of Agricultural Sciences, 64: 771 - 774.

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Submitted

2023-09-22

Published

2013-07-24

Issue

Vol. 30 No. 1 (2013): Journal of Oilseeds Research

Section

Short-Communication

License

The Journal of Oilseeds Research reserves all the copy rights of the published articles and prior permission is to be taken from the journal office if any part of the published articles is to be reproduced in any form in any other publication.

How to Cite

B R KUMAR, V PRAVEEN RAO, V RAMULU, M UMA DEVI, K AVIL KUMAR, & P RAGHUVEER RAO. (2013). Crop coefficients for prediction of evapotranspiration and irrigation requirements of drip irrigated castor (Ricinus communis L.): CROP COEFFICIENTS FOR PREDICTION OF DRIP IRRIGATED CASTOR. Journal of Oilseeds Research, 30(1). https://doi.org/10.56739/jor.v30i1.142805