[Ecological efficiency of fertilization systems on a sod-podzolic loamy soil]
1992
Zakharov, V.N. | Efremov, V.F. | Kovalenko, A.A.
Results of agroecological assessment of organic, mineral, organo-mineral systems with varying fertilization loads are presented for 5 cycles of a 4 fields intensive rotation. The highest energetic and economic efficiency has been achieved with the mean annual fertilization rate: N63P38K70. The optimal mean annual fertilization load is N126P76K140 against the background of manuring 12.5 t/ha, its effects are assessed by production, energetic efficiency, ecological consequences, humus, phosphorus, potassium, nitrogen content in soil
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