|Author:||Sunilkumar, C. ; Jaikumaran, U.|
|Book Group Author:||NA|
The effects of irrigation systems (drip irrigation with or without mulch, and furrow irrigation with mulch) and rates (irrigation at soil moisture tensions of 0.04, 0.06 and 0.08 MPa) on the productivity of bhindi (Abelmoschus esculentus) were studied in Mannuthy, Kerala, India during 1997. Furrow irrigation at 0.06 MPa was evaluated as control. The irrigation depth was maintained at 30 mm, and a 200-gauge black low-density polyethylene sheet was used as mulch. Mulched plants under drip and furrow irrigation had higher yields than the control. Drip irrigation without mulching reduced water consumption by 28% but reduced the yield by 31.4% compared to the control. Mulching along with drip and mulch irrigation at all rates except drip irrigation at 0.08 MPa recorded a benefit cost (BC) ratio greater than 1.00. Furrow irrigation with mulching resulted in the highest BC ratio (1.58) and a net profit of 1.16 lakh from the gross cultivated area of 2.37 ha; the remaining treatments recorded a BC ratio of less than 1.5. Drip irrigation at 0.08 MPa with mulching resulted in an economic loss of 21 822 rupees and a BC ratio of 0.92 from the total area of 2.95 ha; however, the reduction in water consumption under this schedule allowed the cultivation of 1.95 ha additional area relative to the control. Thus, drip irrigation at 0.08 MPa with mulching is economical when water resources are scarce, but furrow irrigation at 0.08 MPa with mulching is most appropriate when water resources are moderate. [1 lakh=100 000].
|Pages:||85 - 86|
|Journal:||Journal of Tropical Agriculture|
application rates, cost benefit analysis, crop yield, furrowirrigation, irrigation, irrigation scheduling, mulching, okras, plantwater relations, productivity, returns, trickle irrigation, water use,water use efficiency, India, Kerala, Abelmoschus esculentus,Abelmoschus, Malvaceae, Malvales, dicotyledons, angiosperms,Spermatophyta, plants, eukaryotes, South Asia, Asia, DevelopingCountries, Commonwealth of Nations, India, watering, AgriculturalEconomics (EE110), Horticultural Economics (EE111) (New March 2000),Horticultural Crops (FF003) (New March 2000), Plant Water Relations(FF062), Plant Production (FF100), Soil Water Management (Irrigation andDrainage) (JJ800) (Revised June 2002) [formerly Soil Water Management],Soil Management (JJ900)