EFFECT OF WEEDS AND MANAGEMENT FACTORS ON SOYBEAN YIELD GAP INKALALEH REGION

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SIAHMARGUEE ASIEH; TORABI BENYAMIN; SOHRABI RAD EID MOHAMMAD; ALIMAGHAM SEYED MAJID

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Journal: JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE) Year:2018 | Volume:20 | Issue:2 Page(s): 563-576

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Title

EFFECT OF WEEDS AND MANAGEMENT FACTORS ON SOYBEAN YIELD GAP INKALALEH REGION

Author(s)

SIAHMARGUEE ASIEH | TORABI BENYAMIN | SOHRABI RAD EID MOHAMMAD | ALIMAGHAM SEYED MAJID | Issue Writer Certificate

Keywords

ASIAN SPIDER FLOWERQ1

BOUNDARY-LINE ANALYSISQ2

GOLESTAN PROVIDENCEQ1

STEPWISE REGRESSIONQ2

YIELDPOTENTIALQ1

Abstract

To study the factors affecting soybean yield loss, an experiment was conducted in the Kalaleh region atsummer of 2016. The sampling of weeds was taken in the early growing season based on W pattern in 50fields. In this study, all agronomic management information including land area, farmers’ experience, seedbed preparation, sowing date, cultivar and provided seed sources, sowing methods, seed rate, weedscontrol methods, amount and time of herbicide application were collected during growing season bypreparing the questionnaire and complete them with farmers. Soybean grain yield determined at the endof the growing season. ASIAN SPIDER FLOWER (Cleome viscosa L. ) and Johnson grass (Sorghum halepense L. )had significant effects on soybean yield among the various parameters of the field area, seed rate, certified seed application and planting date. The predicted minimum and optimum yields with the modelwere 1039 and 2036 kg. ha-1, respectively. Thus, yield gap between predicted minimum and optimumyield was estimated at 996 kg. ha-1 in this region. Results showed that certified seed (23. 07 percent), delayed planting date (15. 04 percent), low seed rate (11. 54 percent), low field area (7. 62 percent), presentof Johnson grass and ASIAN SPIDER FLOWER weeds (12. 47 and 30. 25 percent, respectively) were the mosteffective factors on soybean yield gap. Thus, optimizing mentioned factors can be reduced yield gap.

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APA: Copy

SIAHMARGUEE, ASIEH, TORABI, BENYAMIN, SOHRABI RAD, EID MOHAMMAD, & ALIMAGHAM, SEYED MAJID. (2018). EFFECT OF WEEDS AND MANAGEMENT FACTORS ON SOYBEAN YIELD GAP INKALALEH REGION. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 20(2 ), 563-576. SID. https://sid.ir/paper/209395/en

Vancouver: Copy

SIAHMARGUEE ASIEH, TORABI BENYAMIN, SOHRABI RAD EID MOHAMMAD, ALIMAGHAM SEYED MAJID. EFFECT OF WEEDS AND MANAGEMENT FACTORS ON SOYBEAN YIELD GAP INKALALEH REGION. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)[Internet]. 2018;20(2 ):563-576. Available from: https://sid.ir/paper/209395/en

IEEE: Copy

ASIEH SIAHMARGUEE, BENYAMIN TORABI, EID MOHAMMAD SOHRABI RAD, and SEYED MAJID ALIMAGHAM, “EFFECT OF WEEDS AND MANAGEMENT FACTORS ON SOYBEAN YIELD GAP INKALALEH REGION,” JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), vol. 20, no. 2 , pp. 563–576, 2018, [Online]. Available: https://sid.ir/paper/209395/en

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