Abukutsa, M.O.Chweya,l J.A.Mochoge,l B.O.Ooyango, J.C.2015-07-012015-07-011994East African Agricultural and Forestry Journal, 60 (No1& 2), p. 35-400012-8325http://localhost:8080/dspace/handle/0/1545A study was conducted at Kabete Field Station, University of Nairobi, Kenya, to investigate the possible effects of nitrogen sources and storage on nitrate-nitrogen content in Kale leaves. Leaves from ‘plants that were top-dressed with calcium ammonium nitrate (CAN) accumulated more nitrate-nitrogen than those from those that were top-dressed with sulphate of ammonia (SA). Storage of leaves reduced nitrate-nitrogen concentration in the leaves, but the reduction was not accompanied with NO,-N accumulation. Storing leaves with petioles immersed in water reduced the nitrate-nitrogen concentration than storing the leaves on the shelf. Even though the refrigerated leaves may remain B9 fresh for a longer period than six days, no reduction of NOs-N during the refrigeration 33 period Occurred. The petioles prior to preparation of Kale leaves as human feed may reduce NOs-N concentration in the leaves.enhttp://creativecommons.org/licenses/by/3.0/Journal ContributionNitrogenNitratesKalesBrassica oleracea