TY - JOUR ID - 56795 TI - Development a regression relationship between rainfed wheat yield and soil properties in a semiarid region, Zanjan Province JO - Iranian Journal of Soil and Water Research JA - IJSWR LA - en SN - 2008-479X AU - Babaei, Fatemeh AU - Vaezi, Alireza AU - Teheri, Mehdi AU - Zarrinabadi, Ehsan AU - Eslami, Seyede Fatemeh AD - Ph.D. Candidate Department. of Soil Science, Faculty of Agriculture, University of Zanjan, Iran AD - Associate Professor, Department of Soil Science, Faculty of Agriculture, University of Zanjan, Iran AD - Faculty of Agricultural Research Center, Zanjan, Iran AD - Graduate Student, Dept. of Soil Science, Faculty of Agriculture, University of Zanjan, Iran Y1 - 2015 PY - 2015 VL - 46 IS - 4 SP - 715 EP - 725 KW - : Cross validation KW - Principal component analysis KW - Partial least square regression DO - 10.22059/ijswr.2015.56795 N2 - Rainfed wheat is the main source of staple food for people in the developing countries. Various factors contribute to and affect the production of this crop. The aim followed in the present study was to develop a model to estimate rainfed wheat grain yield as based on physico-chemical properties of the soil. Therefore, wheat grain yield and soil physico-chemical properties were separately determined in triplicates at 53 rainfed wheat fields throughout Zanjan Province in growing season. Year 2014 Making use of partial least square regression, a model was developed to explain the relationship between rainfed wheat grain yield vs soil properties (n=40, R2= 0.6). Silt and calcium carbonate equivalent were the most effective soil properties affecting the crop's grain yield, with the standardized coefficients of the estimating model equal to 0.23 and -0.24, respectively. The results of the research revealed that some soil physico-chemical properties including silt, calcium carbonate and potassium, in order of priority, affected most the rainfed wheat grain yield. UR - https://ijswr.ut.ac.ir/article_56795.html L1 - https://ijswr.ut.ac.ir/article_56795_4ba63e38db4fbed1b5cabbe4066df27c.pdf ER -