VEGETATIVE PROPAGATION OF MAGGAR BANS {DENDROCALAMUS HAMILTON!I MUNRO): EFFECTS OF PLANTING TIME, SPACING AND PHOPHORUS APPLICATION ON MACRO-PROLIFERATION BEHAVIOUR UNDER OPEN NURSERY BED

摘要

Dendrocalamus hamiltonii Munro was evaluated for the effect of month of planting, spacing and phosphorus application on survival, growth, rhizome-genesis, biomass partitioning and P-uptake in macro-proliferated stock. April planted propagules significantly excelled over July ones for all of these traits. Two to three times more dry biomass of stem, roots, rhizome and underground biomass per sapling (g) production was recorded in April planted propagules as compared to propagules planted in July. P-uptake was also higher in April planted propagules than July ones. Spacing of 30 cm x 30 cm resulted in maximum growth, development, biomass production and biomass partitioning and P-uptake than 30 cm x 15 cm and 15 cm x 15 cm spacing. Phosphorus application @ 5 g SSP per propagule resulted in maximum growth, development, rhizome-genesis, dry weight of stem and underground biomass. Higher dose i.e. 10 and 15 g SSP per propagule showed slight depressing effect.