THE EFFECT OF NITROGEN LEVELS AND WILD MUSTARD DENSITIES ON YIELD AND ECONOMIC THRESHOLD OF CANOLA

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SOLEYMANI F.; AHMADVAND G.; SAADATIAN B.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Crop Production Year:2012 | Volume:4 | Issue:4 Page(s): 85-102

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Title

THE EFFECT OF NITROGEN LEVELS AND WILD MUSTARD DENSITIES ON YIELD AND ECONOMIC THRESHOLD OF CANOLA

Author(s)

SOLEYMANI F. | AHMADVAND G. | SAADATIAN B. | Issue Writer Certificate

Keywords

ECONOMIC THRESHOLDQ3

COMPETITIONQ2

NITROGENQ2

MODELQ2

Abstract

To evaluate the effect of different rates of NITROGEN fertilizer on competitive nability of canola (Okapi cv.) in interference with wild mustard, a split-plot experiment based on a randomized complete block design with 3 replications was carried out at agricultural faculty of Bu-Ali Sina University, in 2008-2009. 4 levels of NITROGEN fertilization (100, 150, 200 and 250 kg N ha-1) were assigned to mainplots and plant density of wild mustard at 5 levels (0, 4, 8, 16 and 32 plants m-2) to the sub-plots. The results showed that with increasing NITROGEN application, were improved the canola vertical distribution of LAI and dry matter in pure condition and interference of wild mustard. Increasing wild mustard density led to decreased sum of canola and wild mustard yield in unit area. NITROGEN up to 150 kg ha-1, increased grain yield of wild mustard at all levels density. Increase up to 200 kgN ha-1, led to slight reduction of ECONOMIC THRESHOLD of wild mustard on canola yield, but in 250 kg N ha-1, ECONOMIC THRESHOLD value was less than a wild mustard plant in square meter. Overall the findings suggest that NITROGEN application to 200 kgN ha-1 caused increases in competitive ability of canola against in wild mustard.

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EVALUATION OF FERAL RYE (SECALE CEREALE L.) INTERFERENCE EFFECTS ON WHEAT (TRITICUM AESTIVUM) CULTIVARS AND DETERMINATION OF ECONOMIC AND QUALITATIVE THRESHOLD OF WEED

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APA: Copy

SOLEYMANI, F., AHMADVAND, G., & SAADATIAN, B.. (2012). THE EFFECT OF NITROGEN LEVELS AND WILD MUSTARD DENSITIES ON YIELD AND ECONOMIC THRESHOLD OF CANOLA. ELECTRONIC JOURNAL OF CROP PRODUCTION, 4(4), 85-102. SID. https://sid.ir/paper/134987/en

Vancouver: Copy

SOLEYMANI F., AHMADVAND G., SAADATIAN B.. THE EFFECT OF NITROGEN LEVELS AND WILD MUSTARD DENSITIES ON YIELD AND ECONOMIC THRESHOLD OF CANOLA. ELECTRONIC JOURNAL OF CROP PRODUCTION[Internet]. 2012;4(4):85-102. Available from: https://sid.ir/paper/134987/en

IEEE: Copy

F. SOLEYMANI, G. AHMADVAND, and B. SAADATIAN, “THE EFFECT OF NITROGEN LEVELS AND WILD MUSTARD DENSITIES ON YIELD AND ECONOMIC THRESHOLD OF CANOLA,” ELECTRONIC JOURNAL OF CROP PRODUCTION, vol. 4, no. 4, pp. 85–102, 2012, [Online]. Available: https://sid.ir/paper/134987/en

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