ASometimes two shoots appear at the same time, giving usually a larger crown but from the forester’s point of view, this is a most unsatisfactory boleOption A
BForking is often caused by injuries such as those resulting from frost damage, wind or hail storms, insect attack, particularly by budwarm (Salmalia)Option B
A need for agroforestry system will exist whenever the situations occur:
ATree might lessen the risk of hardship because of crop failure and whenever trees will allow farmers to accumulate capital or cashOption A
BTrees will help to spread production activities throughout the year, by staggering the harvests, providing products in dry seasons, or spreading the labour loadOption B
The major factors that make today’s ‘land-use crisis’ a global issue of greatest concern is:
AThe magnitude of the problem on terms of people and areas affected, which is unprecedented in historyOption A
BThe accelerating nature of the processes involved and the increasing irreversibility of their resultsOption B
CThe lack of success (for socio-economic, cultural or ecological reasons) of most agriculture technologies from temperate regions to solve land-productivity problems over large areas of the topicsOption C