Effect of cyclic irrigation and fertigation on off season production of Capsicum (Capsicum annuum L.) under protected environment
Loading...
Date
2007-05
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present study was undertaken to investigate the ―Effect of Cyclic irrigation and Fertigation on Off –Season production of Capsicum (Capsicum annuum L.)Under protected environment. The site is located at experimental field of Department of Irrigation and Drainage Engineering, College of Technology, G. B. Pant University of Agriculture and Technology, Pantnagar. Soil solarization in polyhouses, studying of the various metrological parameters inside and out side the polyhouses, the response of different levels of irrigation and cyclic irrigation on the biometric observation of capsicum and studying economic feasibility of production of capsicum under polyhouses were some of the methods employed during the study.
The result revealed that the general trend of the temperature of solarized soil has been higher near the soil surface and became cooler with increasing soil depth. The mean maximum temperature was higher in naturally ventilated polyhouse (NVPH)(33.06 0C) followed by open field condition (25.04 0C) than environmentally controlled polyhouse (ECPH)(24.66 0C) while the minimum temperature was also higher in the NVPH (13.05 0C) but followed by ECPH (12.85 0C)than the open field condition (11.46 0C).
The mean daily variation of temperature at 9:00am was higher in NVPH (22.20 0C), followed by ECPH (20.12 0C) than the open field condition (19.67 0C). At the same time at 12:00hrs and 4:00pm it was higher in NVPH but followed by open field condition than in ECPH. The mean daily variation of relative humidity at 9:00am, 12:00hrs and 4:00pm was higher in NVPH followed by open field than the ECPH while the mean daily variation in solar intensity at 9:00am, 12:00hrs and 4:00pm was higher in open field followed by ECPH than NVPH. The crop evapotranspiration (ETc) was higher in open field, followed by NVPH than in ECPH. The average mean daily ETc in open field, NVPH, and ECPH were 2.40, 2.00 and 1.72mm/day respectively. During the six month off-season growing period the total water required at 100% level of irrigation in ECPH was 209.44mm and at 75% level 157.08mm and in NVPH at 100% level 243.98mm and at 75% 182.99mm while in open field 307.27mm depth.
The yield of capsicum per plant and per square meter was maximum in ECPH (2.63kg/plant, 9.71 kg/m2) followed by NVPH (2.51kg/plant, 9.16kg/plant) and in open field (0.49kg/plant, 1.81kg/m2). In NVPH the mean value of yield per m2 was significantly higher in split fertigation treatment (10.63kg/m2) than normal fertigation, N (8.39 kg/m2). At the same time at 100% level of irrigation the mean maximum value of yield per m2 was 9.27kg/m2 than 75% level 9.04kg/m2.
During Of-season production of Capsicum under different level of irrigation and cyclic irrigation and fertigation was more economically feasible in NVPH at the selling price above 15Rs/kg than ECPH and open field condition.
Description
Keywords
null