GITANGE JACKSON OMBUNA EFFECTS OF HOT WATER SEED TREATMENT,MULCHING AND PRUNING ON BLACK ROT DISEASE CAUSED BY Xantomonas campestris pv.campestris IN CABBAGE[brassica oleracea var. capitata] IN KISII COUNTY-KENYA - KISII KISII UNIVERSITY 2019 - XVIII,120P. INCLUDES AN INDEX Subjects--Topical Terms: BEDDING PLANTS-DISEASES