Tag Archives: marketable yield

245-250 V. Eremeev, I. Keres, B. Tein, P. Lääniste, A. Selge and A. Luik
Effect of different production systems on yield and quality of potato
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Effect of different production systems on yield and quality of potato

V. Eremeev, I. Keres, B. Tein, P. Lääniste, A. Selge and A. Luik

Institute of Agricultural and Environmental Science, Estonian University of Life Sciences,Kreutzwaldi St. 1, EE51014 Tartu, Estonia; e-mail: Viacheslav.Eremeev@emu.ee

Abstract:

In the experimental field of the Department of Field Crops and Grassland Husbandry the late maturing potato variety „Ants‟ was grown in the following variants: conversion to organic, N0P0K0, N50P25K95, N100P25K95 and N150P25K95. Pesticides were used in mineral fertilizer variants. In N0P0K0 and mineral fertilizers variants insecticide Fastac 50 was used. The total yield of tubers as well as the proportion of marketable tubers increased significantly with the use of mineral fertilizers (N50P25K95, N100P25K95 and N150P25K95). Tubers from conversion to organic and N0P0K0 variants had significantly higher starch content, compared to the variants where mineral fertilizers were used, but the overall yield of starch remained lower. Increasing the amount of nitrogen fertilizer is positively correlated with the nitrate content in the tubers. The number of tubers infected by potato brown rot and potato soft rot did not differ significantly, but there were fewer tubers infected with black scurf in conversion to the organic variant.

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