Response of summer groundnut (Arachis hypogaea) to irrigationregimes and evapotranspiration suppressants.

Book Title: NA
Year Published: 2003
Month Published: NA
Author: Raskar, B. S. ; Bhoi, P. G.
Book Group Author: NA

A field experiment was conducted during summer 1999-2000 in Rahuri, Maharashtra, India, to determine the appropriate irrigation schedule for summer groundnut and to evaluate the effect of mulch on the crop performance in a broad bed-furrow method. There were 24 treatment combinations comprising 4 irrigation regimes based on cumulative pan evaporation (CPE), i.e. 75, 100, 125 and 150 mm CPE, in the main plots; 6 combinations of mulching (with sugarcane trash at 5 tonnes/ha and plastic film mulch (7 micron)) and antitranspirant (kaolin 8%) in the subplots; and a control. The broad-bed furrow was prepared with a width of 60 cm at the top and 90 cm at the bottom with 15 cm bed height. Two lines of groundnut cv. TG 26 were sown during the last week of February on the bed, keeping a spacing of 30 cm between rows and 6.66 cm within plants. Crop was harvested in the last week of June each year. Irrigation scheduled at 75 mm CPE to summer groundnut recorded significantly maximum number of pod and pod weight per plant, 100-pod weight, dry pod yield (3.40 tonnes/ha), gross returns (Rs 51 907/ha) and net returns (Rs 32 012/ha) in the broad-bed furrow. Mulching with plastic film in combination with kaolin spray was found effective and registered the highest pod yield (3.47 tonnes/ha) over the rest of the treatments. The net returns obtained due to mulching with plastic film and sugarcane trash with and without kaolin spray were almost similar. The benefit cost ratio indicated that the use of sugarcane trash was economically feasible agronomic practice for summer groundnut. The total consumptive use of water was the highest (738 mm) with minimum water use efficiency of 4.61 kg/ha-mm when irrigation was scheduled at 75 mm CPE. The water use efficiency was the highest (6.69 kg/ha-mm) with the use of plastic film mulch with kaolin spray and the lowest with the control (3.49 kg/ha-mm). On the average, the evapotranspiration losses were reduced to 25.77, 14.63 and 4.56% due to application of plastic film, sugarcane trash and kaolin spray, respectively.

Pages: 82 - 85
URL: http:////,ip,url,cpid&custid=s4640792&db=lah&AN=20033157217&site=ehost-live
Volume: 73
Number: 2
Journal: Indian Journal of Agricultural Sciences
Journal ISO: NA
Organization: NA
Publisher: NA
ISSN: 0019-5022

antitranspirants, cost benefit analysis, crop yield,evapotranspiration, groundnuts, irrigation scheduling, kaolin, mulches,mulching, plant water relations, plastic film, pods, returns, sugarcanetrash, water use efficiency, yield components, India, Maharashtra,Arachis hypogaea, Arachis, Papilionoideae, Fabaceae, Fabales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, SouthAsia, Asia, Developing Countries, Commonwealth of Nations, India,mulching materials, peanuts, Agricultural Economics (EE110), NaturalResource Economics (EE115) (New March 2000), Input Utilization(Microeconomics) (EE145), Field Crops (FF005) (New March 2000), PlantWater Relations (FF062), Plant Production (FF100), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Soil Management (JJ900), Plant Wastes (XX200)

Source: EBSCO
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