بررسی اﺛﺮ ﺗﺎرﯾﺦ ﮐﺎﺷﺖ ﺑﺮ ﺳﻄﺢ ﺑﺮگ و ﻣﯿﺰان ﮐﻠﺮوﻓﯿﻞ ﺑﺮگ ارﻗﺎم ﻣﺘﻮﺳﻂ رس و دﯾﺮرس ﺟﺪﯾﺪ ذرت دانه ای

Effect of planting date on leaf area and leaf chlorophyll content of mid and late new maize cultivars