na INLIS000000000002886 Ind 0010-1118002886 Effect of legumes on soil mineral nitrogen and response of potatoes to nitrogen fertilizer NEETESON, J.J. J.J. Neeteson In : J.Vos, C.D. van Loon and G.J. Bollen (eds), effect of crop rotation on potato production in the temparate zones Dordrecht etc, Kluwer (1989):pp.89-93 633.491-181.338 MINERAL SOILS FERTILIZERS SOLANUM TUBEROSUM mfn-4568