Document Type: Original Article


1 Department of Horticulture, M.S of Agriculture, Shiraz University, Iran

2 Department of Horticulture, Faculty of Agriculture, Shiraz University, Iran

3 Department of Biotechnology, M.S.C student of Agricultural, Gonbad kavous University, Iran


Tomato  (L.ycopersicon esculentum  Mill.) cv. Rio Grande  seedlings were nutritionally conditioned with solutions complete fertilizer N(60% NO3+40% NH4)-P-K (20-20-20) , N(30%NO3+70% NH4)-P-K (15-5-30) , the first two week   N(60% NO3+40% NH4)-P-K (20-20-20) and later two week  N(30%NO3+70% NH4)-P-K (15-5-30)  and vice versa were  applied in  completely randomized experiment with three replications to determine the effect of nutritional regimes on tomato transplant growth. As nitrate rate increased from 30% to 60%, fresh shoot weight, plant height, stem diameter, leaf number, leaf area, shoot and root dry weights, and total chlorophyll increased. in the 750 mg/lit  of N( 60% NO3+40%NH4 )-P-K (20-20-20) were decreased and it is with to increasing in stem diameter and total plant growth , application of N(60%NO3 + 40%NH 4 )-P-K(20-20-20) in the first  two weeks of seedling growth and N(30%NO3+70%NH4)-P-K (15-5-30) in the last two weeks  in the concentration of 200 mg/liter seedling height decreased.


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