Census of agriculture data were used to estimate manure nutrient production and the capacity of cropland and … which it is physically feasible to apply the manure produced onfarm at agronomic rates. (The costs of applying manure at … these rates have not been assessed). Even so, manure that is produced on operations that cannot fully apply it to their own …

–livestock systems on degraded lands managed with small inputs of mineral fertiliser and animal manure. Competing uses for crop residues …, retaining more crop residues in the field, and improving manure management can help conserving considerable amount of nutrients … farmer strategies considering labour and financial constraints. Nutrient concentration in excreted cattle manure was …

contained in the manure. Particularly, problematic are waters being impaired by nitrogen and phosphorus from animal manure …. Since federal and state regulations have not been totally successful in precluding water contamination from manure nutrients …, scientists and policymakers might seek ways to encourage the use of manure as a resource for crop production. By analyzing …

Current day large animal facilities generate more manure than they need on their own feed production areas. Excessive … importance. Our model contributes to literature by i) differentiating (the impacts of) manure regulation between the livestock …

Livestock manure and crop residue can be processed in an environmentally acceptable way through anaerobic digestion to …

none, inorganic fertilizer at 100 and 200 kg ha−1 N, and stockpiled manure (SM) and rotted manure (RM) each at 50 and 100 … mouldboard plough draught and tractor fuel consumption compared to inorganic N fertilizer or no amendment with the rotted manure … showing larger reduction than stockpiled manure at the same rate, and higher manure rates showing greater difference than …

resources (i.e., animal manure, crop residues, kitchen waste and green wastes) to cleaner and more efficient energy carriers …