Management of hybrid poplar for optimum yield of wood
Management of hybrid poplar for optimum yield of wood
Mahmood Iqbal Sheikh
ABSTRACT
Intro:
Hybrid poplar was introduced in Pakistan in late fifties. Through the years methods of growing this tree on a large scale have been perfected and particular clones which would successfully grow under different climatic conditions have been identified. However, the optimum growing space requirements of poplars still remained to be standardised. Such a study had a special significance in Pakistan in view of the tremendous shortage of raw material for various end uses and a final decision was required to be taken as to the spacing and the rotation on which poplar should be grown for maximum volume production for different end uses.
Although studies on spacing of poplars have been conducted in many countries, yet the results could not entirely be applicable to Pakistan owing to different climatic conditions obtaining in this part of the world. It was observed that due to comparatively long growing season, here, the rate of growth was faster. Simultaneously low rainfall, high temperature and poor edaphic conditions affected the plants adversely. Some studies on spacing were laid out in the country in 1969 but the treatments were not properly replicated and distributed. To find a possible answer to these questions this PL-480 study was started in Change Manga irrigated plantation in February, 1976.
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