Narm 2104 Forest Entomology (1+1)
History and importance of Forest Entomology in India. Classification of insect pests of forests: types of damages and symptoms. Principles and techniques of Integrated Pest Management in forests: Mechanical, physical, silvicultural, legal, biological and chemical. Insect pests of forest seeds, forest nursery and standing trees of timber yielding species of natural forest. Insect pests of freshly felled trees, finished timbers and their management. Insects of commercial value-honey bees and apiculture; silk- worms and sericulture, lac insect and lac culture.
Safo 2105 Forest Seed Technology (2+1)
Importance of seed in present day
forestry‑ seed and fruit development ‑pollination - seed dispersal.
Planning seed collection‑ determining species, provenances, trees, stands, seed
quantities, year of collection and dates for collection. Collection of immature
fruits..Methods of seed collection. Fruit and
seed handling ‑ maintaining viability and identity‑ special precautions for
recalcitrant seeds. Seed processing‑ operations prior to extraction‑ pre‑cleaning,
methods of extraction‑ operations after extraction‑ cleaning, grading and
control of moisture level‑ factors affecting drying of orthodox seeds. Seed storage‑ definition‑ purpose, seeds‑
Harrington's rule of thumb, seed maturity‑ parental and annual effects. Storage
condition and ageing of seeds. Storage methods. Storage containers. Seed dormancy‑ classification of types of
dormancy. Treatments for breaking exogenous and endogenous dormancy ‑
morphological and physiological dormancy, treatments to overcome double
dormancy. Seed dressing and pelleting.
Seed testing ‑ definition‑ ISTA rules. Sampling‑ seed weight‑ moisture‑
authenticity‑ seed health. Germination testing‑ germination equipment‑
conditions for selected species. Germination evaluation‑ germination testing in
nursery. Indirect tests of viability. Deterioration of seed‑ deterioration vs.
"vigour". Concepts of seed vigour‑ measurements of seed vigour and
deterioration. Seed Act and seed law enforcement. Seed certification.
Emerging trends in tropical seed technology.
