EFFECT OF MINERALS ON SOME BIOMETRICAL PARAMETERS OF GREEN HOUSE TOMATO

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.