F. Okonkwo, I., Department of Agricultural and Bioresources Engineering, Nnamdi Azikiwe University, Awka Nigeria
F. Umar, B., Department of Agricultural Extension and Rural Development, Usmanu Danfodiyo University, Sokoto, Nigeria
Fallahi, S. , Department of Mathematics, Faculty of Sciences, University of Guilan, Rasht, Iran
Fehintola Abolusoro, Patricia , Department of Agriculture, College of Education Technical, Kabba, Kogi State, Nigeria
Fita, Lemma , Ethiopian Institute of Agricultural Research (EIAR), Holeta, Ethiopia
Fotouhi Ghazvini, Reza , Department of Horticultural Science, Faculty of Agriculture, University of Guilan, Rasht, IRAN

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