In order to determine the best method of planting for two varieties of watermelon in Varamin (Charleston Gray and Mahbube) through the three methods of planting (direct sowing of seeds, germinated seeds and transplanting of seedlings), a factorial experiment was conducted as a randomized complete block design with 4 replicates during two years (2007-2008) at the Agricultural Research Center, Va...

In order to determine the response of yield and seed yield components of red bean )Phaseolus vulgaris L. ( genotypes to delay in planting, this study was conducted in Factorial  experiment based on a RCB design with 3 replications in the Jahad-Keshavarzi Research farm of Miyaneh in 2006. Factors included cultivars in three levels(Naz, Gole and Sayad) and planting date in three levels (5 and 20 ...

Iran has an average of 5.5 KWh per square meter solar radiation and 300 sunny days per year on 90% of the land. Regarding this amount of solar radiation and the necessity for solar potential zoning for better efficiencies, drawing solar potential maps is essential. In this study, the monthly data of 39 synoptic of Iran meteorological stations over years (1991-2000) has been used as the input da...

Although self incompatibility in walnut has not been reported, but the dicogamy limits self pollination of walnut cultivars. As the density of female flowers produced by the tree is low, if a high fruit set occurs, yield especially in terminal bearing cultivars will not be high. So breeding of a pollinizer cultivar with proper pollen shading period is highly necessary for increasing fruit produ...