Carbon, Nitrogen, Phosphorus, and Extracellular Soil Enzyme Responses to Different Land Use

Extracellular soil enzymes play a key role in organic matter decomposition and nutrient cycling. However, it is not fully understood how these respond to different land use. Long-term research studies were used evaluate diversified management practices affect extracellular driving C cycling [phenol oxidases (PO), peroxidases (PP), α-glucosidase (AG), β-glucosidase (BG), cellobiohydrolase (CB), β-1,-4-Nacetylglucosaminidase (NAG)], N [leucine aminopeptidase (LAP)], P [phosphomonoesterase (PME)]. The pH, contents of total C, N, mehlich-3 P, respiration nitrogen supply capacity also measured. Different use included tillage frequency, regimes, mineral fertilization, crop rotations liquid dairy manure. Compared medium or high low frequency increased as well NAG PME activities, whereas decreased supply, PO, PP, AG, BG, CB, LAP activities. Non till was associated with lower PP PO activities than moldboard plow. Nitrogen fertilization pH activity but activity. Barley ( Hordeum vulgare ) rotation forage by 31, 21, 44, 33%, respectively, comparison barley monoculture. application manure enzyme (AG, NAG) the fertilizer. When principal component analysis performed, LAP, grouped first component, which explained highest variance. This core group controlling acquiring enzymes, related changes extractable across broad range practices. Increased reflect decline.