Nitrogen transformation in soil: Effect of heavy metals

Nitrogen is the key nutrient factor that influences soil fertility and productivity. It is the mineral nutrient that exists in different forms, but nitrate form is the most preferred form by plants. Irrespective of the form in which N is applied to soil, it undergoes transformation viz. mineralization (ammonification, nitrification), denitrification etc. by enzymes produced by micro organisms. The rate of these processes are influenced by a number of factors, one such being heavy metals accumulated in soil by various anthropogenic activities like disposal of sewage sludge, domestic and industrial effluents discharge, deposition of air borne particulates from mining on agriculture land etc. The heavy metals cause long term hazardous effects on soil eco system and negatively influence the soil biological processes, soil microbial biomass and functions associated with soil N transformation. |

Không thể tạo bản xem trước, hãy bấm tải xuống
TÀI LIỆU MỚI ĐĂNG
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.