THE EFFECT OF NITROGEN FERTILIZER AND DROUGHT STRESS AT DIFFERENT GROWTH STAGES ON QUANTITATIVE AND
QUALITATIVE FORAGE CHARACTERISTICS OF SORGHUM

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MAGHTOOLI M.; CHAEICHI M.R.; HADADCHI GH.R.

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Journal Paper

Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2001 | Volume:8 | Issue:1 Page(s): 103-113

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Information Journal Paper

Title

THE EFFECT OF NITROGEN FERTILIZER AND DROUGHT STRESS AT DIFFERENT GROWTH STAGES ON QUANTITATIVE AND QUALITATIVE FORAGE CHARACTERISTICS OF SORGHUM

Author(s)

MAGHTOOLI M. | CHAEICHI M.R. | HADADCHI GH.R. | Issue Writer Certificate

Keywords

DROUGHT STRESSQ2

NITROGEN FERTILIZERQ2

SORGHUMQ3

FORAGE QUALITYQ3

FORAGE PRODUCTIONQ2

Abstract

An experiment was conducted to evaluate the quantitative and qualitative forage characteristics of SORGHUM in Agricultural Research Station of Gorgan in 1997. The experiment was carried out in pots under controlled conditions. Treatments comprised of three levels of N fertilizer (0,3 and 6 gr N/pot simulating control, 100 and 200 kg N/ha respectively) and DROUGHT STRESS which was applied on four growth stages of sorghun (7-8 leaf stage, flag leaf appearance, heading stage and control). Treatments were arranged factorially and were compared in a Randomized Compe1ete Block Design with three replications. For each DROUGHT STRESS treatment, irrigation was stopped at the beginning of the expected growth stage and re-started when the signs of temporary wilting were seen in plants (pressure of soil moisture equal to - 17 bars). After DROUGHT STRESS, plants were irrigated normally. Application of N fertilizer enhanced dry matter production, water use efficiency, percent crude protein, protein production, ash production and crude fiber yield. However, no significant effects were observed on days to harvest as well as the percent fiber and ash by N fertilizer application. Temporary DROUGHT STRESS applied at different growth stages manipulated dry matter production, days to harvest, water use efficiency, crude protein production, ash production and crude fiber. No significant effects were observed on percent ash, percent crude fiber and prussic acid content by DROUGHT STRESS. DROUGHT STRESS at 7-8 leaf stage and flag leaf appearance increase vegetative growing period and postponded the generative growth. However, DROUGHT STRESS at heading stage accelerated generative growth and decreased plant weight. No significant interaction effect was observed for the measured characteristics in this experiment.

Cites

STUDY OF CRUCIBLE DENSITY AND APPLIED NITROGEN ON YIELD AND SOME PHYSIOLOGICAL CHARACTERISTICS OF FORAGE SORGHUM

References

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APA: Copy

MAGHTOOLI, M., CHAEICHI, M.R., & HADADCHI, GH.R.. (2001). THE EFFECT OF NITROGEN FERTILIZER AND DROUGHT STRESS AT DIFFERENT GROWTH STAGES ON QUANTITATIVE AND QUALITATIVE FORAGE CHARACTERISTICS OF SORGHUM. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 8(1), 103-113. SID. https://sid.ir/paper/9067/en

Vancouver: Copy

MAGHTOOLI M., CHAEICHI M.R., HADADCHI GH.R.. THE EFFECT OF NITROGEN FERTILIZER AND DROUGHT STRESS AT DIFFERENT GROWTH STAGES ON QUANTITATIVE AND QUALITATIVE FORAGE CHARACTERISTICS OF SORGHUM. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2001;8(1):103-113. Available from: https://sid.ir/paper/9067/en

IEEE: Copy

M. MAGHTOOLI, M.R. CHAEICHI, and GH.R. HADADCHI, “THE EFFECT OF NITROGEN FERTILIZER AND DROUGHT STRESS AT DIFFERENT GROWTH STAGES ON QUANTITATIVE AND QUALITATIVE FORAGE CHARACTERISTICS OF SORGHUM,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 8, no. 1, pp. 103–113, 2001, [Online]. Available: https://sid.ir/paper/9067/en

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