EFFECT OF HARVESTING LEVELS AND NITROGEN FERTILIZATION ON SOURCE LIMITATION IN DUAL-PURPOSE (FORAGE AND GRAIN) BARLEY

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MOJADAM M.; MODHEJ A.; SEIDJAVADI K.; LAK SH.

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Journal: Year:2008 | Volume:13 | Issue:1 Page(s): 143-151

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Title

EFFECT OF HARVESTING LEVELS AND NITROGEN FERTILIZATION ON SOURCE LIMITATION IN DUAL-PURPOSE (FORAGE AND GRAIN) BARLEY

Author(s)

MOJADAM M. | MODHEJ A. | SEIDJAVADI K. | LAK SH. | Issue Writer Certificate

Keywords

DUAL-PURPOSE BARLEYQ2

NITROGEN LEVELSQ4

SOURCE LIMITATIONQ2

Abstract

In order to study the SOURCE LIMITATION and contribution of pre-anthesis assimilate to grain in dual-purpose (forage and grain) barley, a field experiment was carried out in Ahvaz region. The experiment design was split-plot in randomized complete block with tree replications. The application rates of N at four levels (60, 120, 180 and 220 KgN.ha-1) were main-plots. Sub-plots were three harvesting levels (Not cutting crop and cutting at five and 10 cm up to earth). Spikelet removal from one side of spike was used to determine SOURCE LIMITATION. The results indicated that forage removal from five and 10 cm up to earth reduced grain yield 32% and 15.8%, respectively. The highest grain yield (530 g. m-2) was in 120 KgN.ha-1 treatment. SOURCE LIMITATION increased with harvesting treatment 28% and 23% in cutting the crop from five and 10, respectively. Generally, results shows grain yield reduced with increasing SOURCE LIMITATION in DUAL-PURPOSE BARLEY. In cutting treatments, minimum SOURCE LIMITATION was obtained with 270 KgN.ha-1.Dry matter translocation and the contribution of preanthesis assimilate to grain were effected by forage removal treatments.

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بررسی اثر تنش گرمای پس از گرده افشانی بر محدودیت منبع ارقام گندم و جو در شرایط آب و هوایی اهواز (همایش)

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APA: Copy

MOJADAM, M., MODHEJ, A., SEIDJAVADI, K., & LAK, SH.. (2008). EFFECT OF HARVESTING LEVELS AND NITROGEN FERTILIZATION ON SOURCE LIMITATION IN DUAL-PURPOSE (FORAGE AND GRAIN) BARLEY. JOURNAL OF AGRICULTURAL SCIENCES, 13(1), 143-151. SID. https://sid.ir/paper/7927/en

Vancouver: Copy

MOJADAM M., MODHEJ A., SEIDJAVADI K., LAK SH.. EFFECT OF HARVESTING LEVELS AND NITROGEN FERTILIZATION ON SOURCE LIMITATION IN DUAL-PURPOSE (FORAGE AND GRAIN) BARLEY. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2008;13(1):143-151. Available from: https://sid.ir/paper/7927/en

IEEE: Copy

M. MOJADAM, A. MODHEJ, K. SEIDJAVADI, and SH. LAK, “EFFECT OF HARVESTING LEVELS AND NITROGEN FERTILIZATION ON SOURCE LIMITATION IN DUAL-PURPOSE (FORAGE AND GRAIN) BARLEY,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 1, pp. 143–151, 2008, [Online]. Available: https://sid.ir/paper/7927/en

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