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Bulgarian Journal of Soil Science, Agrochemistry and Ecology
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Nutrient Content in Tomato Plants Depending on Applied Fertilization аnd an Attack on Diseases
Ivanka Mitova, Nikolai Dinev, Vanya Lozanova, Vesselina Vasileva
Abstract: On the alluvial-meadow soil, a test experiment was carried out with a determinant, tomato variety – Rio Grande. The investigation was based on crops grown on the same area and on the same fertilization scheme in the previous year. In addition to the untreated control, the experiment includes a mineral fertilizer variant – N30P12K15, organic fertilizer variant – 2069 kg/da manure and mixed fertilizer, which gives half of the fertilizer in mineral and organic manure variants.
The results of the presented experience show that the ash content of the healthy plants, depending on the fertilization applied and the recording phase, ranged from 5.45 to 9.09%. In the case of plants infected with diseases, the range is greater than 4.63 to 10.52%. The ash content increases during vegetation, and in the case of diseased plants this process is more pronounced. Healthy tomato plants with mineral fertilizers have higher nitrogen contents in their foliage compared to organic and organic fertilization. In healthy plants of all readings, there is no apparent relationship between the fertilizer and the potassium content of the leaves, but in the damaged leaf of the plants with mineral fertilization, more potassium is accumulated. Only for calcium the leaf plant content of the plants is higher than in the healthy ones. Mg content decreases in both groups of plants.
Keywords: A. solani; ash elements; L. taurica; leaf biomass; Ph. infestans
Date published: 2017-07-25
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