TY - JOUR T1 - Effect of Pollinator Insects and Date of Planting on Quantity and Quality of the Yield of Six Oilseed Sunflower Cultivars in Isfahan Region TT - تأثیر عمل حشرات گرده افشان و زمان کاشت روی کمیت و کیفیت محصول شش رقم آفتابگردان روغنی در منطقه اصفهان JF - JSTNAR JO - JSTNAR VL - 1 IS - 1 UR - http://jstnar.iut.ac.ir/article-1-274-en.html Y1 - 1997 SP - 43 EP - 57 KW - Honeybees KW - Pollination KW - Date of planting KW - Sunflower N2 - In this study, conducted in Isfahan region over a period of two years, six oilseed sunflower cultivars named Record, Venimek 8931, Chernianka, Zaria, Perdovik and Mehr hybrid were investigated in a split-split plot design. These cultivars were planted on March 29 and April 29, with and without the presence of pollinator insects. The results showed that the yield of different cultivars were significantly different (p M3 ER -