Effect of Biofertilization on Yield and Quality of some Potato Cultivars (Solanum Tuberosum L.)

An experiment was conducted at the Experimental Farm of Faculty of Agriculture, Assiut University, Egypt in two consecutive winter seasons, 2004-2005 and 2005-06 to determine the effects of three potato cultivars and three biofertilizers (Rhizobacterin, Microbein and Phosphorein) on potato quality and yield under Assiut conditions. Cultivar Diamant gave the highest number of stems per plant, total yield per hectare, highest numbers of marketable tuber yield per plant in the two seasons. The lowest values of the previous characters were recorded in Spunta except total yield of tubers, which was recorded in cv. Cara. Regard to biofertilization treatments, Phosphorein biofertilizer and control treatments gave the highest total yield per hectare in both seasons. Rhizobacterin biofertilizer gave the highest average weight of tubers in both seasons. Control treatment and inoculation of potato seed tubers with different biofertilizer sources gave no significant effect on number of main stem per hill, number of marketable tuber yield per plot in the two fall seasons.