Bulgarian Journal of Agricultural Science
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GROWER AND REPRODUCED BEHAVIOR OF TOMATOES ON SUBSTRATES FOR SOIL RECLAMATION
I. Mitova, M. Banov, L. Nenova
Abstract: The experiment is based on four reclamation substrates, taken from technically and biologically reclaimed dumps built during the extraction of iron ore (Lokorsko) and coal (Moshino). The purpose of this study was to determine the effects of fertilization and elevated levels of heavy metals on the growth, development and fruiting of tomatoes on the researched substrates and terrains. It was found that the surveyed areas are suitable for agricultural production. The positive effect of the application of N, P and K fertilization on the tested reclamation substrates is convincingly proved by the increment of tomato plants. In the early stages of tomato vegetation, the height and mass of plants fertilized with (NH4)2SO4 are greater than those of plants with NH 4NO3 in all three Samples. As vegetation advances and reaches fruiting phase, plants fertilized with NH4NO3 achieve greater vegetative mass than those fertilized with (NH4)2SO4. In all three reclamation substrates, plants fertilized with NH4NO3 formed more and larger fruits than those fertilized with (NH4)2SO4. The total yield of fruit from plants fertilized with ammonium sulfate and ammonium nitrate was highest from the reclamation substrate of organically reclaimed dump built during iron ore extraction, horizon 0–30 cm
Keywords: heavy metals; soil destruction; soil reclamation; tomatoes
Date published: 2017-09-04
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