Volume 26 (2024)
Volume 25 (2023)
Volume 24 (2022)
Volume 23 (2021)
Volume 22 (2020)
Volume 21 (2019)
Volume 20 (2018)
Volume 19 (2017)
Volume 18 (2016)
Volume 17 (2015)
Volume 16 (2014)
Volume 15 (2013)
Volume 14 (2012)
Volume 13 (2011)
Volume 12 (2010)
Volume 11 (2009)
Documentation of production process and determination of limiting factors of wheat yield by CPA method in Kalaleh County

Mohammad Sharif Nobatiany; ali Rahemi karizaki; Abbas Biabani; ali mansouri rad

Volume 22, Issue 3 , September 2020, , Pages 361-372


  This study was conducted to evaluate the factors limiting wheat yield in Kalaleh County using the Comparative Performance Analysis (CPA) method in 2015-16. Collection of the required information was done by fieldwork, and personal interviews with farmers. To this aim, 60 wheat fields in dry land areas ...  Read More

Identification of Rapeseed Limiting Factors Using Performance Comparison Analysis

Shahram SekhavatiFar; ali Rahemi karizaki; Ali Nakhzari Moghaddam; Mehdi Mollashahi

Volume 22, Issue 1 , March 2020, , Pages 13-25


  Understanding the performance potential and the gap between the actual yields of crops with the achievable function is necessary to diagnose the limiting factors of performance. The present study was conducted based on the method of CPA in 50 fields of Zavkooh villi (Kalaleh, Golestan, Iran) in 2016 ...  Read More

Identifying soybean yield-limiting factors by using Comparative Performance Analysis (Case study: Golestan province – Kalaleh)

Ali Mansouri rad; Ali Nakhzari Moghadam; Afshin Soltani; Ali Rahemi Karizaki; Benyamin Torabi

Volume 19, Issue 4 , March 2018, , Pages 1033-1046


  One of the main problems of soybean production in the east region of Golestan, Iran is considerable difference between actual yield and attainable yield which is called yield gap. In recent years, this gap has been impressive, and therefore, identifying soybean yield-limiting factors is essentially needed. ...  Read More

Determination of the optimum managements ranges in order to increasing wheat yield in Golestan province

Amir Hajjarpoor; Habibolah Kashiri

Volume 19, Issue 3 , February 2018, , Pages 577-590


  In this study, collecting of management information from about 700 wheat farms in Golestan province was conducted during two growing seasons of 2013-2014 and 2014-2015. In each of region, potential yields, the optimum crop management and simultaneously the percentage of wheat farms out of the optimal ...  Read More