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Haghighat nia, H., Shirvanian, A., Hekmat, M. (2016). Effect of Different Levels of Irrigation and Plant Growth Regulatory of Pix on Yield of Cotton (Case Study: Darab, Fars). , 4(1), 61-76. doi: 10.22092/ijcr.2017.109250
Hasan Haghighat nia; Abdolrasool Shirvanian; Mohammad hasan Hekmat. "Effect of Different Levels of Irrigation and Plant Growth Regulatory of Pix on Yield of Cotton (Case Study: Darab, Fars)". , 4, 1, 2016, 61-76. doi: 10.22092/ijcr.2017.109250
Haghighat nia, H., Shirvanian, A., Hekmat, M. (2016). 'Effect of Different Levels of Irrigation and Plant Growth Regulatory of Pix on Yield of Cotton (Case Study: Darab, Fars)', , 4(1), pp. 61-76. doi: 10.22092/ijcr.2017.109250
Haghighat nia, H., Shirvanian, A., Hekmat, M. Effect of Different Levels of Irrigation and Plant Growth Regulatory of Pix on Yield of Cotton (Case Study: Darab, Fars). , 2016; 4(1): 61-76. doi: 10.22092/ijcr.2017.109250

Effect of Different Levels of Irrigation and Plant Growth Regulatory of Pix on Yield of Cotton (Case Study: Darab, Fars)

پژوهش های پنبه ایران
Article 5, Volume 4, Issue 1, February 2017, Pages 61-76    PDF (283.37 K)
Document Type: Research Paper
DOI: 10.22092/ijcr.2017.109250
Authors
Hasan Haghighat nia* 1; Abdolrasool Shirvanian2; Mohammad hasan Hekmat3
1Soil and Water Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Darab, Iran
2Economic, Social and Extension Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Shiraz, Iran
3Cotton Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Darab, Iran
Abstract
Water deficit is one of the known methods of irrigation in water scarce regions of the world. Use of every- other- furrow irrigation is the one of deficit irrigation techniques. A study was carried out to investigate the effects of deficit irrigation on cotton in split plot randomized complete block design in four replications during two years, in Bakhtajerd research station (Darab). Main Plots contained five treatments: 1) Irrigation of all the furrows in ever irrigation as normal irrigation; 2) Constant every other furrow irrigation; 3) Variable every other furrow irrigation; 4) Once normal irrigation and twice every other irrigation; 5) Twice normal irrigation and once every other irrigation. Subplots contained two levels of plant growth regulator (pix) by spraying. Plant properties such as cotton yield, number of boll, boll weight, earliness, harvest index and water use efficiency were evaluated at the end of growth season. The results of combined mean comparison by Duncan’s test indicated that deficit irrigation decreased cotton yield in all irrigation levels in comparison with normal irrigation. Pix usage didn’t show significant effect on cotton yield. Impact of pix application on number of boll was negative, although increased boll weight and harvest index significantly. Also, Pix increased the earliness and strengthen of crop against water shortage as well. Deficit irrigation technique proved increment water use efficiency in the second and fourth irrigation levels by 20.2% and 14.03%, respectively.
Keywords
Cotton; Pix; Water deficit; Water use efficiency
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