The influence of comparative fertilization on the yield and quality of sugar beet, the nutrient balances. The evaluation of long-term field experiments in the Czech Republic
Pavel Čermák
ukzuz@ukzuz.czDepartment of Agrochemistry, Soil and Plant Nutrition, Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic (Czechia)
Kamil Cigánek
Department of Agrochemistry, Soil and Plant Nutrition, Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic (Czechia)
Abstract
Agricultural research on plant nutrition cannot be supported without results of long-term field experiments. The Central Institute for Supervising and Testing in Agriculture established four long-term field experiments in four experimental places of the sugar beet production region of the Czech Republic, in the years 1972–1979. Each experiment comprised 12 combinations of fertilization and had an eight years crop rotation. The following five combinations were used for evaluation of yields of sugar beet (roots and leaves) and quality of the products: the control treatment without fertilization, the treatment with farmyard manure (FYM) and three treatments with FYM applied together with comparative mineral fertilization at three different levels. In the control treatment, average yield of the main product (roots) was 52.0 tons per ha with sugar content 18.5%. In the other treatments increase of fertilization caused gradual rising of the roots and leaves yield (for roots: from 57.5 to 68.3 tons per 1 ha) and, on the other hand, the decrease of sugar content (from 18.6 to 16.8%). The nitrogen and potassium balances were negative, except for the highest level of mineral fertilization. The phosphorus balance was highly positive at all levels of mineral fertilization.
Keywords:
fertilization, nutrient balance, sugar beetReferences
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Authors
Pavel Čermákukzuz@ukzuz.cz
Department of Agrochemistry, Soil and Plant Nutrition, Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic Czechia
Authors
Kamil CigánekDepartment of Agrochemistry, Soil and Plant Nutrition, Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic Czechia
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