|Author:||Asadi, M. E. ; Shahinrokhsar, P.|
|Book Group Author:||NA|
A field experiment was conducted to evaluate of tape and furrow irrigation systems for two varieties of soybean under different irrigation regimes in summer 2006 at Gorgan research station which is located in Golestan province in the north part of Iran. The experiment was laid out in a split-split plot in the form of randomized complete design where each treatment was replicated three times. Irrigation systems includes two levels of tape (T) and surface irrigation which was furrow type (S) at main plots, and three irrigation regimes I1, I0.75 and I0.5 which I1 is full irrigation (100% ETc) and I0.75 and I0.5 are deficit irrigation at subplots and two varieties DPX (V1) and Sepideh (V2) at sub subplot. The results showed that generally most of parameters, except thousand weight grains (gr) did not influenced by different irrigation systems. Interaction between irrigation systems and, irrigation regimes and varieties was not found significantly for all parameters. Significant difference was found for crop height, number of nodule and grain yield under different irrigation treatments. The highest was belonging to 100% ETc which were no significant differences comparing 75% ETc. The lowest were obtained in 50% ETc. In tape irrigation water distribution efficiency increased in compared with furrow irrigation. By applying deficit irrigation in furrow irrigation, the application efficiency (Ea) was increased. Comparing water consumption (m3/ha) between two systems was showed that consumed of furrow irrigation was 1.6 times in respect to tape irrigation. With applying deficit irrigation, water use efficiency was increased in both systems. The highest water use efficiency was obtained in tape irrigation and 50% water requirement (1.09 kg/m3) in compare with in furrow irrigation (0.46 kg/m3).
|Journal:||Proceedings of the 10th International AgriculturalEngineering Conference, Bangkok, Thailand, 7-10 December, 2009. Role ofagricultural engineering in advent of changing global landscape|
crop yield, furrow irrigation, irrigation systems, plantheight, plant water relations, soyabeans, varieties, water requirements,water use efficiency, Iran, Glycine (Fabaceae), Glycine max, Glycine(Fabaceae), Papilionoideae, Fabaceae, Fabales, dicotyledons,angiosperms, Spermatophyta, plants, eukaryotes, West Asia, Asia, MiddleEast, Developing Countries, Threshold Countries, irrigation management,soybeans, Field Crops (FF005) (New March 2000), Plant Breeding andGenetics (FF020), Plant Water Relations (FF062), Plant Production(FF100), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]