Growth responses of tropical onion cultivars to photoperiod and temperature based on growing degree days
S. Z. Tesfay*, I. Bertling, A. O. Odindo, P. L. Greenfield and T.S. Workneh.
Horticultural Science, School of Agricultural Sciences and Agribusiness, University of KwaZulu-Natal, Private Bag X01, Scottsville, Agric Ave., 3209 Pietermaritzburg, KwaZulu-Natal, South Africa.
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