Water production function and optimal irrigation programme for drip irrigated castor (Ricinus communis L.)

WATER PRODUCTION FUNCTION AND OPTIMAL IRRIGATION PROGRAMME FOR CASTOR

Authors

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

DOI:

https://doi.org/10.56739/jor.v31i2.142485

Keywords:

Castor, Optimum drip irrigation, Pan evaporation, Water Production function

Abstract

Water shortage for crop production necessitates adequate knowledge of the crop water production function to make decisions on water allocation for optimum returns from castor crop under surface drip irrigation. The study was conducted in rabi 2009-10 at Agricultural college farm, Rajendranagar, Hyderabad. The different drip irrigation schedules at 40, 60 and 80 per cent 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 at (0.8 IW/CPE ratio) irrigation. The results showed that drip irrigation at 0.6 Epan replenishment up to flowering and 0.8 Epan later on registered comparable seed yields with drip irrigation scheduled at either at 0.6 or 0.8 Epan and was significantly superior over other treatments and the best fit water production function was quadratic (R2= 0.99). The optimum quantity of water (ETc) for maximum net returns under prevailing prices (water and castor @ `10 and 30 ha/mm and kg/ha, respectively) was 381.4 ha mm with a resultant seed yield of 3611 kg/ha. The gross returns, net returns and net return/rupee invested varied from ` 72194 to 144447/ha, ` 36808 to 108018/ha and 1.040 to 3.049, respectively.

Downloads

Download data is not yet available.

References

Patel B D, Maliwal G L, Dudhatra N P, Kaswala R R, Patel P U, Raman S and Patel M L 1998. Effect of drip irrigation on yield and water expense efficiency of castor. Gujarat Agricultural University Research Journal, 24(1): 86-88.

Praveen Rao V 2011. Cotton drip irrigation. Irrigazette, 126: 11-17.

Tiwari D D 2012. A historical policy review of success of castor revolution in Gujarat, India. Journal of Human Ecology, 38: 213-222. DOI: https://doi.org/10.1080/09709274.2012.11906490

Vaux H J and Pruitt W O 1983. Crop water production functions. Advances in Irrigation, 2: 61-97. DOI: https://doi.org/10.1016/B978-0-12-024302-0.50009-6

Downloads

Published

2023-09-19

Issue

Vol. 31 No. 2 (2014): 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

Water production function and optimal irrigation programme for drip irrigated castor (Ricinus communis L.): WATER PRODUCTION FUNCTION AND OPTIMAL IRRIGATION PROGRAMME FOR CASTOR. (2023). Journal of Oilseeds Research, 31(2). https://doi.org/10.56739/jor.v31i2.142485