HRISKA BOTEVA1; PLAMENA YANKOVA2
1 Agricultural Academy, Maritsa Vegetable Crops Research Institute, BG-4003 Plovdiv, Bulgaria
2 Technical University, BG-9000 Varna, Bulgaria
Boteva, H. and P. Yankova, 2017. Effect of fertilization, growing scheme and variety on economic productivity in biological tomato production. Bulg. J. Agric. Sci., 23 (5): 820–825
The experimental work is carried out during the period 2014-2016 in the Technical University of Varna. The following biological products for fertilization are studied: Biosol, Biofa and Emosan. The schemes for growing of determinate tomato variety Kopnezh F1 and Nikolina F1 are two – single-row and double-row raised bed. The purpose of the study is to establish the effect of bio-products for fertilization and growing scheme on the economic productivity of tomato, grown in the conditions of biological agriculture.
Bio-products included in the study increase the yields of both varieties. The highest yields, in the single-row scheme, were obtained from the plants grown on the background of Emosan + Biofa. The increase towards the control was with 26.3% (Kopnezh F1) and with 25.3% (Nikolina F1). The average effect of the bioproducts used is higher in Kopnezh F1 variety (21.1%), compared to Nikolina F1 (19.5%). It is proven greater influence of fertilization on both schemes of growing which is strongly expressed in the single-row scheme, while the effect of the variety is more slightly expressed.
The index of productivity for Kopnezh F1 variety, averagely for the study period, in both schemes of growing is 3.6, and for the Nikolina F1 variety – in single-row scheme – 3.8 and 4.0 for the double-row scheme.