Ameliorative treatment of low-fertility soils

Agronomic and economic efficiency of chemical reclamation of Solonets land areas

“…These results suggest that the change of main characteristics of solonets soils after a 10 year reclamation period of grain crops cultivation and perennials growing increased significantly the productivity of the crusted multinatrium solonets soils in spite of weather conditions instability, influencing upon the level of soil salinization and dynamics of other characteristics of soil fertility. In this way the first years of perennials growing posed the question about the recommendations for the short-term effect of gypsuming as a reclamation method in unirrigated conditions with an average annual precipitation of less than 350 mm [7,8].…”

“…Kursakova nonperennial crops (oat, wheat) cultivation in the conditions of hydrogenic moisture regime leads to soil salinization in a similar way as in the soils without cultivation. In her opinion, the plants were severely affected by salinization and the wheat yield was low, because of oversaturation of soil solutions with products of exchange and their weak outflow in the first years of reclamation [8,9].…”

“…In case of solonets gypsuming the aftereffect reclamation characteristics went down by half on the 15 th year of reclamation. In 15 years repeated reclamation of the across solonets soil site (control) and the once gypsuming soil site ("background") samples was tested by three doses: the control sample included 8 tons per hectare for reclamation of gypsum within 0-5 cm, 16 tons per hectare for reclamation of gypsum within 0-10 cm, and 32 tons per hectare for reclamation of gypsum within 0-20 cm [8].…”

“…Economic efficiency of solonets soils reclamation in Western Siberia is the basic criteria of their evaluation in the conditions of market economy. The data of the analyses of crusted solonets soils reclamation prove their insufficient effectiveness [10,11,12]. Reclamation technology needs large additional costs and requires long period of payback, which is equal to the aftereffect period of deep tillage.…”