Growth dynamics of tomato plants on mixtures of zeolitic substrate and high-moor peat
Abstract
The effect of the composition of mixtures of a nutritious zeolite substrate with non-fertilized neutralized high-moor peat on the growth of determinant tomatoes in a laboratory pot experiment was studied. Zeolite substrate contained a complete set of inorganic substances necessary for plants. In the experiment, the content of the zeolite substrate in a mixture with peat (0–100 %) and the molar ratio of nitrogen and potassium (N:K = 0,5:1 – 3:1) were varied with a total content of these elements of about 50 meq/100 g of substrate. The cultivation of tomatoes was carried out in pots containing 450 ml of nutrient medium during the full cycle of plant development (from seed to ripe fruits). Watering was carried out with drinking-quality tap water. No plant feeding was carried out during plant growth. In the process of plant growth, monitoring of the crown volume was carried out using the proposed method, which is based on periodic measurement of the height and width of the projection of the plant from different angles. This made it possible to plot the dependence of the crown volume depending on the growing time, the percentage of the substrate in the mixture with peat, and the N: K ratio. It has been shown that nutrient media containing 50 and more percent of zeolite substrate have a sufficient supply of nutrient ions balanced in composition to ensure the full growth of tomato plants of the determinant cultivar Red Pearl. The largest crown volume and fruit mass were observed when using a mixture of 10 % peat with 90 % zeolite substrate with a ratio of N: K = 2:1.
About the Authors
V. S. Soldatov
Институт физико-органической химии Национальной академии наук Беларуси
Belarus
Belarus
A. P. Jezubets
Институт физико-органической химии Национальной академии наук Беларуси
Belarus
Belarus
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Review
For citations:
Soldatov V.S., Jezubets A.P. Growth dynamics of tomato plants on mixtures of zeolitic substrate and high-moor peat. Soil Science and Agrochemistry. 2021;(1):161-171. (In Russ.)
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