The major effects of mulches, irrespective of their composition, are attributed to:

Related Mcqs:

1. The effects of mulches, irrespective their composition, are attributed to:

   A. Suppression of weeds, by restricting the amount of light on the ground surface and the hindering their germination and growth
   B. Conservation of soil, by preventing erosion
   C. Thermal insulation, leading to greater deposition of dew
   D. All of the above

2. The major types of Mulches is / are:

   A. Artificial mulches: Paper and plastic mulches
   B. Natural mulches
   C. Inorganic; soil mulch and stone mulch
   D. Organic; branches, twigs and leaves, leaf litter, grass weed
   E. All of the above

3. Thermal insulation, leading to greater deposition of dew. In addition organic mulches also contribute to:

   A. Enhanced humification and microbial activity leading to higher nutrient availability
   B. Improvement of soil structure, by incorporation of plant residues and by encouraging soil fauna.
   C. Mulching is of profound importance in dry regions
   D. Even in more humid climates it may have very beneficial effects with certain species, e.g., the poplar
   E. All of the above

4. The major effects of soil organic matter are:

   A. Soil depth
   B. Climatic situation
   C. Both (a) & (b)
   D. None of these

5. The rate of replacement of species composition with the change in the environment constitutes:

   A. Gamma diversity
   B. Beta diversity
   C. Community diversity
   D. Ecosystem diversity

6. Division of forest into stands on the basis of composition is / are:

   A. Pure stand
   B. Mixed stand
   C. Both (a) & (b)
   D. None of these

7. The control of growing stock, its structure and composition are:

   A. Site adaptation
   B. Choice of species and provenance
   C. Regeneration age and timing of the cut are important consideration
   D. Harvesting the produce
   E. All of the above

8. The composition of soil air is affected by:

   A. Pore size
   B. Soil organisms
   C. Type of roots
   D. All of these

9. By chemical composition the humus has maximum percentage of:

   A. Nitrogen
   B. Oxygen
   C. Carbon
   D. Hydrogen

10. Harmful effects can also result from:

    A. Pruning trees that are growing very slowly
    B. Removing large branches
    C. Eliminating too much of the live crown
    D. Committing similar errors of judgment
    E. All of the above