Identifying Oilseed Rape Limiting Factors by Means of Performance Comparison Analysis

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Sekhavatifar Shahram; RAHEMI KARIZAKI ALI; NAKHZARI MOGHADDAM ALI; Mollashahi Mehdi

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Journal: JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE) Year:2020 | Volume:22 | Issue:1 Page(s): 13-25

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Title

Identifying Oilseed Rape Limiting Factors by Means of Performance Comparison Analysis

Author(s)

Sekhavatifar Shahram | RAHEMI KARIZAKI ALI | NAKHZARI MOGHADDAM ALI | Mollashahi Mehdi | Issue Writer Certificate

Keywords

Actual yieldQ1

attainable yieldQ1

crop managementQ1

rapeseedQ2

yield gapQ1

Abstract

It is necessary to understand the performance potential and the gap between the Actual yields of crops with the achievable function so as to diagnose the limiting factors of performance. The present study has been conducted based on CPA Method in 50 fields of Zavkooh villi (Kalaleh, Golestan, Iran) in 2016 and 2017. The study has measured and recorded all information related to management practices, soil characteristics, and farmer socio-economic status. Furthermore, using stepwise regression, the Comparative Performance Analysis (CPA) Method considers the relation between the variables and yield, with the yield gap rate as well as its causes being estimated to reveal each factor’ s contribution to the creation of the yield gap. Results show that there is a 1818 kg per hectare vacuum between the average real yield (2308 kg ha-1) and the yieldable one (4123 kg ha-1), . Accordingly, the most important factors of yield gap in the region include field size (21. 4%), summer plowing (15%), the time of land preparation and plowing (14. 7%), nitrogen fertilizer (14. 6%), potassium fertilizer (14%), weed density per unit area (10. 8%), seed treatment (8. 1%), and Sub-soiler (1. 4%).

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APA: Copy

Sekhavatifar, Shahram, RAHEMI KARIZAKI, ALI, NAKHZARI MOGHADDAM, ALI, & Mollashahi, Mehdi. (2020). Identifying Oilseed Rape Limiting Factors by Means of Performance Comparison Analysis. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 22(1 ), 13-25. SID. https://sid.ir/paper/209252/en

Vancouver: Copy

Sekhavatifar Shahram, RAHEMI KARIZAKI ALI, NAKHZARI MOGHADDAM ALI, Mollashahi Mehdi. Identifying Oilseed Rape Limiting Factors by Means of Performance Comparison Analysis. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)[Internet]. 2020;22(1 ):13-25. Available from: https://sid.ir/paper/209252/en

IEEE: Copy

Shahram Sekhavatifar, ALI RAHEMI KARIZAKI, ALI NAKHZARI MOGHADDAM, and Mehdi Mollashahi, “Identifying Oilseed Rape Limiting Factors by Means of Performance Comparison Analysis,” JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), vol. 22, no. 1 , pp. 13–25, 2020, [Online]. Available: https://sid.ir/paper/209252/en

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