Effect of different amounts of nitrogen on quantity and quality of radish (Raphanus Sativus L.)

An experiment was conducted at the green house of agricultural researching station of E. Azarbayjan in 2009. A factorial experiment using completely randomized design with five levels of N (0, 125, 250, 375 and 437.5 kg.ha-1). At growing period factors of quality and quantity are examined. The characters such as: yield, length leaf, dry matter weight, length of tuber was measured and noted and after the end of sampling, amounts of nutrients of N, P, K and nitrate were measured that the conclusion of research is as fallows.By the increasing of N levels, tuber yield increase significantly as levels of 250 kg N.ha-1 increased the tuber tield but in the levels of 375 kg N.ha-1 decreased the yield.Accumulated NO3- N was increased by increasing N-fertilizer in tuber of radish as in 437.5 kg N. ha-1 level reach the amount maximum.