Nitrogen mass balances in conventional, integrated and ecological cropping systems and the relationship between balance calculations and nitrogen runoff in an 8-year field experiment in Norway

By A. Korsaeth, R. Eltun. 2000

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Models of Biological Nitrogen Fixation of Legumes (2011, background): “For example, α may represent the decline in %Nd f a under high soil mineral N conditions, in terms of net mineral N input (g N m−2), and is calculated as: α = 1 − β · Nnet.inorg (2) where β evaluates the sensitivity of legume BNF to soil mineral N (Korsaeth and Eltun, 2000).”
A comparison of environmental, soil fertility, yield, and economical effects in six cropping systems based on an 8-year experiment in Norway (2002, background): “However, estimates of ammonia volatilisation from cattle slurry and denitrification indicate that losses were larger in the CON-F system than in the INT-F and ECO-F systems (Korsæth and Eltun, 2000).”
Models of biological nitrogen fixation of legumes. A review (2011, background): “For example, α may represent the decline in %Nd f a under high soil mineral N conditions, in terms of net mineral N input (g N m−2), and is calculated as: α = 1 − β · Nnet.inorg (2) where β evaluates the sensitivity of legume BNF to soil mineral N (Korsaeth and Eltun, 2000).”