EFFECT OF VELVETLEAF DENSITY (ABUTILON THEOPHRASTL) INTERFERENCE WITH SOYBEAN (GLYCINE MAX)

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ABD ELAHI A.; BARARPOUR M.T.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2007 | Volume:13 | Issue:SUPPLEMENT (SPECIAL ISSUE ANIMAL SCIENCE) Page(s): 169-179

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Title

EFFECT OF VELVETLEAF DENSITY (ABUTILON THEOPHRASTL) INTERFERENCE WITH SOYBEAN (GLYCINE MAX)

Author(s)

ABD ELAHI A. | BARARPOUR M.T. | Issue Writer Certificate

Keywords

VELVETLEAFQ3

COMPETITIONQ4

WEED DENSITYQ3

YIELDQ3

Abstract

A field study was conducted at the main agricultural experiment station, Sari, Mazandaran in 1998 to evaluate the effect of various VELVETLEAF densities on soybean growth and YIELD. Various VELVETLEAF densities in soybean were compared in a randomized complete block design with four replications. The plots were four rows, five meter long. The soybean stand density was 20 plants/m. Treatments were: soybean plus VELVETLEAF at 0.25, 0.5, 1, 2, 4, 8 and 12 plants/m of soybean row; and control (weed free soybean). The lowest density of one VELVETLEAF plant/4m in soybean row caused 3.5, 14, 11, and 6.4 % reduction in height, canopy width, stem diameter and dry weight as compared to the soybean alone, respectively. Soybean pods number reductions were 9, 23, 33, 44, and 60. 75 and 83% for 0.25, 0.5, 1, 2, 4, 8 and 12 VELVETLEAF plants/m in the soybean row, respectively. Control treatment produced 2122 kg/ha soybean YIELD while plots infested with 0.25, 0.5, 1, 2, 4, 8 and 12 VELVETLEAF plants/m produced 1925, 1615, 1360, 1057, 922, 485 and 292 kg/ha, respectively. These results indicate that VELVETLEAF is very competitive in soybean, even at lowest density of one plants/4m of soybean row. Linear regression analysis showed a high correlation between number of pods (x) and soybean YIELD (y in kg/ha). The equation was: Y= 33.436 + 44.088x with r2=0.90.

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APA: Copy

ABD ELAHI, A., & BARARPOUR, M.T.. (2007). EFFECT OF VELVETLEAF DENSITY (ABUTILON THEOPHRASTL) INTERFERENCE WITH SOYBEAN (GLYCINE MAX). JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 13(SUPPLEMENT (SPECIAL ISSUE ANIMAL SCIENCE)), 169-179. SID. https://sid.ir/paper/9661/en

Vancouver: Copy

ABD ELAHI A., BARARPOUR M.T.. EFFECT OF VELVETLEAF DENSITY (ABUTILON THEOPHRASTL) INTERFERENCE WITH SOYBEAN (GLYCINE MAX). JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2007;13(SUPPLEMENT (SPECIAL ISSUE ANIMAL SCIENCE)):169-179. Available from: https://sid.ir/paper/9661/en

IEEE: Copy

A. ABD ELAHI, and M.T. BARARPOUR, “EFFECT OF VELVETLEAF DENSITY (ABUTILON THEOPHRASTL) INTERFERENCE WITH SOYBEAN (GLYCINE MAX),” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 13, no. SUPPLEMENT (SPECIAL ISSUE ANIMAL SCIENCE), pp. 169–179, 2007, [Online]. Available: https://sid.ir/paper/9661/en

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