Abstract
In the present study, the length of growth and developmental stages and some biometrical parameters of tomato grown in winter greenhouse were investigated in relation to mineral fertilizer doses and combinations. Results of the study demonstrated that flowering synchrony of both the variants P150K150N150 and P150K150N350, basic norms of nitrogen in which increased by 100 to 200 kg and the variants N250P250K250, basic norms of triangular mineral fertilizer in which, increased by 100 kg was later by 5 to 10 days than the variants, which have no fertilizers and other combined doses. It also revealed growth of vegetative organs of the plant is stimulated, whereas the growth of reproductive organs inhibited. Investigation of growth rates of main stem of the tomato plant for each variants shows height of main stem is 368 cm for no fertilizer variant, 381 cm for N150P150, and 387 cm for N150P150K250 variant, which is the tallest among other variants. It is taller by 19 cm than control.
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