bore holes into the coffee berries causing premature fall of young berries, increased vulnerability of infested ripe berries to fungus or bacterial infection thus reduction in both yield and quality of the coffee
Berries may not ripen properly, become raisins or dried, and may remain attached to the branch. and affecting bean development and quality. In its more severe form, the fungus invades the berry during the green stage (4–14 weeks after flowering)
Very common fast growing arable weed. Found in open ground and easy to control with herbicides, but often germinates late in the season in maize crops. Does not like crop competition and shade.
Small yellow flowers on a tall stem, and strong smell that can contaminate the grain sample at harvest. Leaves vary from long oval to fern-like. One of the few weeds that is resistant to atrazine. Competitiveness Moderate
Common grass in arable fields. Seed heads stick to clothing different species exist; S. verticillata sticks to clothing and has appointed seed head. S pumila above tends not to stick to clothing and has an orange colour around the seed head which is much more cylindrical.
These are perennial plants that are commonly found in shallow water or moist soils and can reach 4 feet in height. They resemble grasses and often grow in thick clusters.
Couch grass looks like just a tuft of any grass, but underneath the ground the roots form a dense network. It spreads rapidly by means of thin, wiry and sharp-ended rhizomes.
Highly aggressive, fast growing annual with a red upright stem and soft green triangular leaves. Germinates all year-round and produces very high numbers small black seeds very quickly. Very quick to develop resistance to several common herbicides which makes it often very difficult to control.
