University of Tehran Press Iranian Journal of Soil and Water Research 2008-479X 46 1 2015 03 21 Evaluation of Corn Forage Yield and Yield Components under Alternate Furrow Irrigation Evaluation of Corn Forage Yield and Yield Components under Alternate Furrow Irrigation 11 18 54291 10.22059/ijswr.2015.54291 FA Mitra Samsamipoor Former Graduate Student, Faculty of Agriculture, University of Zabol Peiman Afrasiab Assistant Professor, Faculty of Agriculture, University of Zabol Mohammad Reza Emdad Assistant Professor and Staff Member, Soil and Water Research Institute Masoumeh Delbari Assistant Professor, Soil and Water Research Center Fateme Karandish Assistant Professor, Faculty of Agriculture, University of Zabol Journal Article 2014 06 08 Different deficit irrigation management scenarios as alternate furrow irrigation with<br />regard to sensitive growth stages of corn were assessed in terms of the effects on yield<br />and yield components. The research was performed as a randomized full block design<br />with six treatments and three replications. The treatments were comprised of: full furrow<br />irrigation within whole growing season, alternate furrow irrigation in whole growing<br />season, full irrigation at the establishment stage and alternate irrigation at the other stages,<br />full irrigation at flowering stage while alternate irrigation at the other stages, full<br />irrigation at establishment and flowering stage accompanied by alternate irrigation at the<br />other stages, full irrigation at flowering and ripening stages and alternate irrigation in<br />other stages. Overall, the effect of deficit irrigation on yield and yield components was<br />statistically significant (p<0.01). Full irrigation in the whole growing season led to the<br />highest wet forage yield (67022 kg/ha) and while alternate furrow irrigation in the whole<br />growing season, the lowest wet forage yield (50064 kg/ha). The most desirable treatment<br />was recorded as: full irrigation at the flowering stage and alternate irrigation in the other<br />stages. With this treatment, the reduction in wet and dry forage yields, leaves wet and dry<br />weights as well as stem wet and dry weights in comparison with control were about 8 to<br />14 %. This is quiet acceptable as it saves 39% irrigation water. The highest irrigation<br />water use efficiency (1.88 kg/m3) was achieved through full irrigation at flowering stage<br />with alternate irrigation of the other stages. Different deficit irrigation management scenarios as alternate furrow irrigation with<br />regard to sensitive growth stages of corn were assessed in terms of the effects on yield<br />and yield components. The research was performed as a randomized full block design<br />with six treatments and three replications. The treatments were comprised of: full furrow<br />irrigation within whole growing season, alternate furrow irrigation in whole growing<br />season, full irrigation at the establishment stage and alternate irrigation at the other stages,<br />full irrigation at flowering stage while alternate irrigation at the other stages, full<br />irrigation at establishment and flowering stage accompanied by alternate irrigation at the<br />other stages, full irrigation at flowering and ripening stages and alternate irrigation in<br />other stages. Overall, the effect of deficit irrigation on yield and yield components was<br />statistically significant (p<0.01). Full irrigation in the whole growing season led to the<br />highest wet forage yield (67022 kg/ha) and while alternate furrow irrigation in the whole<br />growing season, the lowest wet forage yield (50064 kg/ha). The most desirable treatment<br />was recorded as: full irrigation at the flowering stage and alternate irrigation in the other<br />stages. With this treatment, the reduction in wet and dry forage yields, leaves wet and dry<br />weights as well as stem wet and dry weights in comparison with control were about 8 to<br />14 %. This is quiet acceptable as it saves 39% irrigation water. The highest irrigation<br />water use efficiency (1.88 kg/m3) was achieved through full irrigation at flowering stage<br />with alternate irrigation of the other stages. https://ijswr.ut.ac.ir/article_54291_e6edf8e80504d987bb965e6cda221bcf.pdf