The impact of varieties, inter-row spacing and doses of fertilizers on fruit productivity and effectiveness of pumpkin production in the South of Ukraine

Gennadiy Karashchuk1, Vadym Ilchuk1 and Sergiy Lavrenko1
Kherson State Agrarian and Economic University, Kherson 73006, Ukraine

Abstract

Karashchuk, G., Ilchuk, V. & Lavrenko, S. (2022). The impact of varieties, inter-row spacing and doses of fertilizers on fruit productivity and effectiveness of pumpkin production in the South of Ukraine. Bulg. J. Agric. Sci., 28 (1), 89–95

The paper presents the results of the research on the impact of doses of mineral fertilizers and inter-row spacing on fruit productivity of pumpkin. The research was conducted in 2017-2019 in dark-chestnut slightly alkaline soils. The experiment scheme included the following factors and their variants: the varieties Yanina, Dolia, Rodzynka; the inter-row spacing: 70 cm, 140 cm, 210 cm; the doses of fertilizers: without fertilizers, N30P30, N60P60, N90P90.. The experimental data were processed by the standard ANOVA procedure within MS Excel software. A steady level of fruit productivity of pumpkin with high economic indexes in the South of Ukraine is reached when growing the varieties Dolia and Rodzynka with the inter-row spacing of 140 and applying N60P60. We established that the application of these techniques allows achieving the fruit productivity at the level of 25-30 t/ha, the net profit being 63024 and 78026 UAH/ha, and the level of profitability being 165.1 and 201.2%.

Keywords: pumpkin; doses of fertilizers; varieties; inter-row spacing; productivity; economic efficiency

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