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Effects of Various Rates and Concentrations of N-P-K on Growth ‘Rio Grande’ Tomato Seedling

Journal: International Journal of Advanced Biological and Biomedical Research (Vol.2, No. 3)

Publication Date:

Authors : ; ; ;

Page : 579-585

Keywords : Seedlings; Complete fertilizer; nitrate; Height; Tomato;

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Abstract

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.

Last modified: 2019-07-05 03:01:54