Open AccessEffect of meliorative doses of phosphogypsum on the agrochemical properties of the soil and the yield of sunflower
Author(s) -
K Denisov,
D Upolovnikov,
I Poletaev,
A Linkov
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/723/2/022042
Subject(s) - phosphogypsum , sunflower , yield (engineering) , environmental science , agrochemical , soil water , agronomy , nutrient , organic matter , chemistry , environmental chemistry , agriculture , soil science , raw material , materials science , biology , metallurgy , ecology , organic chemistry
The influence of meliorative doses of phosphogypsum application on agrochemical soil properties and sunflower yield was studied. The results of experiments carried out in the Volga region on light chestnut soils are presented. It was revealed that the content of heavy metals for all variants of the experiment did not exceed the approximate permissible concentration; application of phosphogypsum shifted the reaction of the soil environment towards neutral. The use of this agricultural technique increased the content of nutrients in the soil and labile organic matter, most of all, this was noted in the variant with a phosphogypsum dose of 8 t/ha. It was concluded that the combined application of mineral fertilizers and phosphogypsum at a dose of 4 t/ha leads to a significant increase in yield by 0.65 t/ha. The use of phosphogypsum as an ameliorant solves the environmental problem of utilizing wastes after the production of mineral fertilizers accumulated in the Russian Federation in the amount of about 50 million tons. The studies carried out have confirmed the soil-improving and fertilizing properties of phosphogypsum, as well as its environmental safety.