Effects of pesticides on mango leaf and flower microflora.
Lim Tong Kwee, Khor Hung Teik
Author Affiliation: University of Agriculture Malaysia, Serdang, Selangor, Malaysia.
Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz 89 : 125-131
Abstract : Four-year-old mango trees were sprayed with maneb (Zn salt) (2%) + dicrotophos (O.O5%) + foliar fertilizer (Welgro at 200 g/100 l) before the flower buds opened, and sprayed and unsprayed leaves and flower buds (and later, flowers) were sampled 4 days later and at weekly intervals. Colletotrichum gloesporioides [Glomerella cingulata] populations on leaves and flowers were greatly reduced but the saprophytic component of the microflora of both was greatly increased. The diversity of micro-organisms on the leaves was greater than on the flowers, but with leaves the overall population decreased with age whereas with flowers it increased.