Quantification of the impacts of climate warming and crop management on canola phenology in Punjab, Pakistan

• DOI: 10.1111/jac.12206
• Publication Date: 2017-03-14T21:09:42Z
• Authors: S. Ahmad; G. Abbas; Z. Fatima; R. J. Khan; M. A. Anjum; M. Ahmed; M. A. Khan; C. H. Porter; G. Hoogenboom
• Keywords: Anthesis; Growing season

Abstract Yield is influenced by the length of growing season, which affected weather conditions and management practices a crop, including sowing dates shifting cultivars. It necessary to understand effects agronomic variables on phenological stages crop phases in order develop strategies for adaptation agricultural systems changes climatic conditions. The goal this study was determine impact warming trends phenology canola from 1980 2014 central southern Punjab, Pakistan. Sowing, emergence, anthesis physiological maturity were delayed an average 6.02, 3.14, 3.31 1.89 days per decade, respectively. duration anthesis, decreased 2.71, 4.13 1.42 respectively, all 10 locations that analysed study. sowing, positively correlated with increase temperature 1.41, 1.49 0.85 °C, However, such as negatively 1.22, 0.64 1.86 locations. Applying process‐based CSM‐CROPGRO‐Canola model using standard cultivar (field tested) years indicated simulated occurred earlier due trend compared observed stages. One‐quarter negative thermal compensated new cultivars had higher time requirements. Therefore, genotypes number degree day requirement high tolerance should be priority evolving