STUDY OF THE EFFECT OF DROUGHT STRESS AND NITROGEN MANAGEMENT ON YIELD, YIELD COMPONENTS AND WATER USE EFFICIENCY OF SEED CORN UNDER KHUZESTAN CLIMATE CONDITIONS

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MOJADAM M.; NADERI AHMAD; NOURMOHAMMADI GHORBAN; SIADAT SEYED ATA ELAH; AYENEHBAND AMIR

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Journal: Year:2007 | Volume:13 | Issue:3 Page(s): 691-705

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Title

STUDY OF THE EFFECT OF DROUGHT STRESS AND NITROGEN MANAGEMENT ON YIELD, YIELD COMPONENTS AND WATER USE EFFICIENCY OF SEED CORN UNDER KHUZESTAN CLIMATE CONDITIONS

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Keywords

CORNQ2

DROUGHT STRESSQ2

NITROGENQ2

SPLIT NITROGENQ2

WATER USE EFFICIENCYQ2

NITROGEN MANAGEMENTQ2

Abstract

In order to study the effects of DROUGHT STRESS, different levels and split application of NITROGEN on yield, yield components and WATER USE EFFICIENCY (economical and biological) of a hybrid CORN (Se. 704) a research was conducted in summer, 2004. This research was made based on three split-plot field experiments, RCBD. Each of the irrigation treatments implemented separately in each experiment have been as follows Optimum irrigation, moderate stress and severe stress (irrigation after getting out 50, 75 and 100% of available water, respectively). In each experiment three NITROGEN levels consist of 140, 180 and 220 kg Nha-1 were applied in main plots and subplots which consisted of split application of NITROGEN (S,= %50 at planting + 50% at V6 stage, S2=25% at planting stage and + 75% at V6 stage, S3= %25 at planting + 50% at V6 stage + 25% at V12 stage). There were three replication for each experiment. Results showed that grain and biological yield, were reduced significantly in response to increasing to drought severity. The effect of NITROGEN on grain and biological yield and yield components except number of row per ear was significant. When available water decreased, positive effect of NITROGEN application on grain and biological yield decreased significantly. In comparison to S1 treatment, S3 increased grain yield and number of grain per ear, significantly. Maximum WATER USE EFFICIENCY (economical and biological) 1.8 and 3.4 gm-3 was obtained from optimum irrigation, respectively. When DROUGHT STRESS increased, WATER USE EFFICIENCY decreased significantly. The highest WATER USE EFFICIENCY was obtained from 220 Kg Nha-1 under optimum irrigation condition. WATER USE EFFICIENCY increased with split application of S3 (%25 at planting + 50% at V6 stage + 25% at V12 stage) significantly.

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APA: Copy

MOJADAM, M., NADERI, AHMAD, NOURMOHAMMADI, GHORBAN, SIADAT, SEYED ATA ELAH, & AYENEHBAND, AMIR. (2007). STUDY OF THE EFFECT OF DROUGHT STRESS AND NITROGEN MANAGEMENT ON YIELD, YIELD COMPONENTS AND WATER USE EFFICIENCY OF SEED CORN UNDER KHUZESTAN CLIMATE CONDITIONS. JOURNAL OF AGRICULTURAL SCIENCES, 13(3), 691-705. SID. https://sid.ir/paper/7734/en

Vancouver: Copy

MOJADAM M., NADERI AHMAD, NOURMOHAMMADI GHORBAN, SIADAT SEYED ATA ELAH, AYENEHBAND AMIR. STUDY OF THE EFFECT OF DROUGHT STRESS AND NITROGEN MANAGEMENT ON YIELD, YIELD COMPONENTS AND WATER USE EFFICIENCY OF SEED CORN UNDER KHUZESTAN CLIMATE CONDITIONS. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;13(3):691-705. Available from: https://sid.ir/paper/7734/en

IEEE: Copy

M. MOJADAM, AHMAD NADERI, GHORBAN NOURMOHAMMADI, SEYED ATA ELAH SIADAT, and AMIR AYENEHBAND, “STUDY OF THE EFFECT OF DROUGHT STRESS AND NITROGEN MANAGEMENT ON YIELD, YIELD COMPONENTS AND WATER USE EFFICIENCY OF SEED CORN UNDER KHUZESTAN CLIMATE CONDITIONS,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 3, pp. 691–705, 2007, [Online]. Available: https://sid.ir/paper/7734/en

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