Читать книгу Groundwater Geochemistry - Группа авторов - Страница 91

Organic fertilizers help in releasing various elements like Ca²⁺ and Mg²⁺ into the soil through decomposition and help in increasing soil water holding capacity. It also helps in reducing Na⁺ toxicity through cation exchange capacity (Machado and Serralheiro 2017). Application of potash fertilizers can reduce the salinity effect of soils on crops. It reduces the uptake of Na⁺, which helps in increasing crop production. It also helps in the uptake of elements such as Ca²⁺, Mg²⁺, K⁺, and P. The boron toxicity can be overcome by adding nitrogen fertilizers (Koohkan and Maftoun 2016). The effects of Cl⁻ toxicity in soils can be ameliorated by adding nitrogen fertilizers (Bar et al. 1997; Karaivazoglou et al. 2005). The toxic effects of sodic soils on crops can be rectified by adding gypsum to the soil (Zaman et al. 2018).