Forestry

The slowest growth rate has been reported from cycad, known as Dion edule from Mexico measured in ________

A. 1980
B. 1981
C. 1982
D. 1983

Fastest rate of growth recorded (excluding Bamboo, which is not a tree botanically but woody grass) is known from Albizia falcate, planted on 17th June 1974 in Sabah, ______.

A. Malaysia
B. China
C. Korea
D. Japan

The earliest species of tree still surviving is the Maidenhair tree (Ginkgo biloba) of Zhexiang, ______, which first appeared about 165,000,000 years ago, during the Jurassic era:

A. Korea

B. Japan

C. China

D. Malaysia

The oldest known living tree is the Bristlecone pine named “Methusela” at 3050 m (10,000 ft) in the ________ , confirmed as 4700 years old:

A. California
B. Washington
C. New York
D. None of these

The largest known petrified tree is one of Sequoiadendron giganteum with a ______ trunk, near Coaldale, Nevada, U.S.A.

A. 79.5m
B. 89.9m (295 ft)
C. 99.5 m
D. None of these

The maximum age of any tree established so far is in Bristlecone (Pinus longaeva), which grows at _______ above sea level on the northeast face of Nevada U.S.A.

After proper design and establishment of the windbreak, the farmer needs to pay particular attention to a key management needs:

A. Grazing protection
B. Fire protection
C. Pruning
D. Harvesting
E. All of the above

Influence on crop yields is:

A. Are carefully measured at various points on a line perpendicular to the center of the windbreak
B. By calculation, it can be shown that the total potential yields for most crops will be 2-10% greater on the field
C. Both (a) & (b)
D. None of these

A windbreak with 50% crown density is more effective than one of either 100% or of ______ density:

In Pakistan, because of small field size, most often 2 or 3 rows windbreaks are used, and should expect the effects to reach only about 12H downwind and _____ upwind:

A. 1H
B. 2H
C. 3H
D. 4H