Document Type : Research Paper

Authors

1 M.Sc. Student, Plant Production Department, College of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran.

2 Assistant Professor, Plant Production Department, College of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran

3 Gonbad Kavous University.

Abstract

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 of Kalaleh were selected to have sufficient diversity in all crop management, planting, crop protection and harvesting. The amount of grain delivered to the wheat shopping centers was recorded after determining the amount of drop as the final yield of the farm. The CPA was used to determine the yield gap and identify the factors that caused it. The results of yield model showed that there was a difference of 4071.7 kg between achievable (7248 kg/ha) and actual yield (377.4 kg/ha). Among studied variable, the farmer experience, seeding rate, the amount of phosphorus in soil, frequency of use of fungicide, organic matter of soil, amount of potassium absorbed in soil and amount of applied nitrogen had the most influence on wheat yield gap in the study area, which were 19.4, 16.8, 14.9, 14.3, 12.7, 11.7 and 10.3 percent of the achievable yield. By amending these factors, it seems that it could reduce the difference between achievable yield and actual yield.

Keywords

Abravan, P., Soltani A., Majidian M., & Mohsenabadi, G.H. (2016). Study of field management factors and underlying reasons limiting yield of oilseed rape in east of Golestan province using CPA method. Agroecology Journal, 7(2), 46-60. (In Persian)
Bakhsh, K., Hassan I., & Maqbool, A. (2005). Factors affecting cotton yield: A case study of Maas, E.V.; Sargodha. Journal of Agriculture Social Sciences, 1, 332-334.
Begum, M.A., Islam M.A., Ahmed Q.M., Islam M.A., & Rahman, M.M. (2015). Effect of nitrogen and phosphorus on the growth and yield performance of soybean. Research in Agriculture Livestock and Fisheries, 2(1), 35-42. DOI: 10.3329/ralf.v2i1.23027
Dastan, S., Noormohamadi, G., Madani, H., & Soltani, A. (2015). Analysis of Energy Indices in Rice Production Systems in the Neka Region. Journal of Environmental Sciences, 13(1), 53-66. (In Persian)
De Bie, C.A.J.M. (2000). Yield gap studies through comparative performance analysis of agroecosystems. International Institute for Aerospace and Earth Science (ITC), Enschede. The Netherlands. 234 p.
Fageria, N.K. (2009). The use of nutrients in crop plants. CRC Press. The USA. 430 p.
Gorjizad, A., Soltani, A., Dastan, S., & Ajamnoroozi, H. (2019). Evaluation of Potential Yield and Yield Gap Associated with Crop Management in Improved Rice Cultivars in Neka Region. Agroecology journal, 11(1), 277-294. (In Persian)
Guilpart, N., Grassini, P., Sadras, V.O., Timsina, J., & Cassman, K.G. (2017). Estimating yield gaps at the cropping system level. Field crops research, 206, 21-32. DOI.org/10.1016/j.fcr.2017.02.008
Hajjarpoor, A., Soltani A., Zeinali E., Kashiri H., Aynehband A., & Nazeri, M. (2017). Determination of the optimum managements ranges in order to increasing wheat yield in Golestan province. Journal of Crops Improvement, 19(3), 577-590. (In Persian)
Hoffman, G.J. 1977. Crop salt tolerance: current assessment Journal of Irrigation and Drainage Division, 103: 115-134.
Lobell, D.B., Cassman, K.G., & Field, C.B. (2009). Crop yield gaps: their importance, magnitudes, and causes. Annual Review of Environment and Resources, 34, 179-204. Doi: org/10.1146/annurev.environ.041008.093740
Nehbandani, A., Soltani A., Zeinali E., & Hoseini, F. (2016). Analyzing soybean yield constraints in Gorgan and Aliabad katul using CPA method. Agroecology Journal, 7(1), 109-123. (In Persian)
Nekahi, M.Z., Soltani A., Siyahmarguee A., & Bagherani, N. (2014). Yield gap associated with crop management in wheat: Case study, Golestan province-Bandar Gaz. Electronic Journal of Crop Production, 7(2), 135-136. (In Persian).
Patrick, M., Tenywa, J.S., Ebanyat, P., Tenywa, M.M., & Mubiru, D.N. (2013). Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects. Journal of Sustainable Development, 16, 31-41. DOI: 10.5539/jsd.v6n12p31
Poori, K., Akbari F., Kamkar, B. (2012). The effect of different crop residues and soil compound on potassium concentration of leaf and wheat yield. Journal of Plant Production, 19(4), 207-212. (In Persian)
Pradhan, R. (2004). The effect of land and management aspects on maize yield. International Institute for Geo-Information Science and Earth Observation Enschede (ITC). The Netherlands. 52 p.
Rajapakse, D.C. (2003). Biophysical factors defining rice yield gaps. International Institute for Geo-Information Science and Earth Observation Enschede (ITC). The Netherlands. 80 p.
Rezaei, A., & Soltani, A. (1998). An introduction to Applied Regression Analysis, Fourth ed. Isfahan University of Technology, Esfahan, Iran. (In Persian)
Shahbazi, K., & Besharati, H. (2013). Overview of Agricultural Soil Fertility Status of Iran. Fields Management Journal. 1(1), 1-15. DOI:  10.22092/LMJ.2013.100072
Singh, P., Vijaya D., Chinh N.T., Pongkanjana A., Prasad K.S., Srinivas K., & Wani, S.P. (2001). Potential productivity and yield gap of selected crops in the rain fed regions of India, Thailand, and Vietnam. Natural Resource Management Program Report no. 5. Patancheru 502 324, Andhra Pradesh, India: International Crops Research Institute for the Semi-Arid Tropics. 50p. http://oar.icrisat.org/id/eprint/2511
Soltani, A. (2007). Application of SAS in statistical analysis. Mashhad Jahad Daneshgahi Press, Mashhad, Iran.
Soltani, A., Galeshi S., & Zeinali, E. (2000). Analysis of the Constraints on Wheat Production in Golestan Province. Report of the research project, Golestan Province Management and Planning Organization. (In Persian)
Soltani, A., Hajjarpoor, A., & Vadez, V. (2016). Analysis of chickpea yield gap and water-limited potential yield in Iran. Field Crops Research, 185, 21-30. DOI.org/10.1016/j.fcr.2015.10.015
Soltani, A., Torabi B., Galeshi S., & Zeinali, E. (2011). Analyzing Wheat Yield Constraints in Gorgan with Comparative Performance Analysis (CPA) method, Golestan. Research Report, Iran. (In Persian)
Tanaka, A., Satio K., Azoma K., & Kobayashi, K. (2013). Factors affecting variation in farm yields of irrigated lowland rice in southern-central Benin. European Journal of Agronomy, 44, 46-53. DOI.org/10.1016/j.eja.2012.08.002
Torabi, B., A. Soltani, S. Galeshi, E. Zeinali & M. Kazemi Korgehei, M. (2013). Ranking factors causing the wheat yield gap in Gorgan. Electronic Journal of Crop Production, 6, 171-189. (In Persian)
Torabi, B., Soltani A., Galeshi S., & Zeinali, A. (2012). Analyzing wheat yield constraints in Gorgan. Journal of Crop Production, 4(4), 1-17. (In Persian)
Yousefian, M., Dastan, S., Soltani, A., & Ajamnorouzi, H. (2018). Estimation of yield gap in local rice cultivars by using CPA and BLF methods (Case study: Mazandaran province, Sari region). Journal of Crops Improvement, 10(3), 267-288. (In Persian).
Zeinvand Lorestani, A., Behnam Kamkar B., & Razavi, S.E. (2017). Study on the effect of agricultural management factors on fungal diseases diversity indices and wheat yield in Gorgan using decision tree analysis CART. Cereal Research, 6(4), 489-505. (In Persian)