Journal of Applied Biosciences (J. Appl. Biosci.) [ISSN 1997 - 5902]
Volume 48: 3322 - 3330. Published December 29, 2011.
Effect of fertilizer types on nutritional quality of two cabbage varieties before and after storage
Ojetayo A. E, J.O. Olaniyi, W. B. Akanbi and T. I.Olabiyi
Department of Agronomy, Ladoke Akintola University of Technology, P.M.B 4000, Ogbomoso, Nigeria.
*Correspondent author, E mail: Olaniyikunle2005@yahoo.com
ABSTRACT
The effect of fertilizer types on the nutritional composition of two cabbage varieties before and after storage was determined. The treatments involved 8 fertilizer types (NPK, neem, alesinloye organomineral, sunshine organomineral, sunshine organic, cassava peel compost, alesinloye organic and pacesetter organomineral fertilizers) applied at 60kg/ha and a control, applied to two cabbage varieties (Copenhagen market and F1 milor). The treatments were laid out in randomized complete block design fitted into split plot with variety as the main plot factor and fertilizer types as sub plot factor, replicated three times. Data were collected on the number of rotted leaves, degree of rottenness and nutritional composition of cabbage before and after storage. The nutritional composition of cabbage head before and after storage was significantly (p = 0.05) influenced by the applied fertilizers and variety. Higher K and vitamin C contents were determined in Copenhagen market while F1 milor recorded higher P, Ca and crude protein composition before storage. The two varieties had similar average value of Mg content in the cabbage head before storage. Organomineral fertilizers resulted into the highest phosphorus, pottassium and crude protein contents of cabbage head before storage while NPK treatments resulted in more vitamin C content. Although there were inconsistencies in the nutritional compositions of cabbage after storage, F1 milor retained more minerals compared to Copenhagen. Organomineral fertilizers (Pacesetter > Sunshine > Alesinloye) compared well with NPK (15:15:15) and enhanced optimum nutritional compositions of cabbage varieties before and after storage. Neem fertilizer improved the storability of cabbage varieties. Despite the pre and post- harvest constraints encountered with the cabbage varieties used, F1 milor had better nutritional values than Copenhagen market with or without fertilizer, therefore can be recommended as the better variety for Ogbomoso, South West, Nigeria.
Key word: Brassica oleracea L, nutritional values, organomineral, storage losses, minerals, organic
FULL PAPER [PDF AVAILABLE HERE]
