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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Observed trends in mean temperature during the phenological phases, (a) sowing−anthesis, (b) sowing−maturity and (c) anthesis−maturity, for cotton from 1980 to 2015 at 15 locations in Punjab, Pakistan.