|Author:||Veeraputhiran, R. ; Chinnusamy, C.|
|Book Group Author:||NA|
Field experiments were carried out at Tamil Nadu Agricultural University, Coimbatore during winter (August 1998-February 1999) and summer (March-August 1999) seasons to study the water use, soil moisture availability, water use efficiency (WUE) and productivity of hybrid cotton (TCHB 213) under two irrigation methods (drip and furrow) and different levels and methods of nitrogen (N) application. The experiments were laid out in split plot design with three replications. The treatments consisted of three drip irrigation regimes (100, 75 and 50% of furrow irrigation) in main plots and four levels of N application (drip fertigation at 120, 90 and 60 kg/ha and 120 kg/ha as drip band application) in sub-plots with an absolute control of furrow irrigation with band application of N at 120 kg/ha for comparison. The results revealed that drip irrigation substantially increased the seed cotton yield (9.3 and 13.6%) during winter and summer seasons, respectively, as compared to control. Drip fertigation and drip band application of N increased the seed cotton yield by 10.8 and 9.7 per cent in winter and 15.0 and 10.9 per cent in summer seasons, respectively, over furrow band application. By adopting drip fertigation, saving of irrigation water upto 43 per cent and nitrogen utilization by 50 per cent were achieved in hybrid cotton in both the seasons of study. The available soil moisture (ASM) was found always nearer to field capacity (90.5 to 72.6%) under drip irrigation, whereas furrow irrigation showed deep decline of ASM. The mean daily water use and crop coefficient values were higher with higher irrigation and were found lesser during early stages of crop growth and reached a peak during flowering and boll formation stages in winter and boll maturity stage in summer. Drip irrigation and drip fertigation substantially increased the water use efficiency as compared to furrow irrigation with band application in both the seasons.
|Pages:||74 - 79|
|Journal:||Journal of Cotton Research and Development|
band placement, cotton, cottonseed, crop growth stage, cropyield, fertigation, furrow irrigation, hybrids, nitrogen, nitrogenfertilizers, plant water relations, seasonal variation, soil watercontent, trickle irrigation, water availability, water use, water useefficiency, India, Tamil Nadu, Gossypium, Malvaceae, Malvales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, SouthAsia, Asia, Developing Countries, Commonwealth of Nations, India,fertirrigation, Madras, seasonal changes, seasonal fluctuations, FieldCrops (FF005) (New March 2000), Plant Breeding and Genetics (FF020),Plant Water Relations (FF062), Plant Production (FF100), Soil Physics(JJ300), Soil Fertility (JJ600), Fertilizers and other Amendments(JJ700), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]