PRODUCTIVITY ASSESSMENT OF MULTIPURPOSE TREE SPECIES IN NORTHERN DRY ZONE OF KARNATAKA
Loading...
Date
2004
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, DHARWAD
Abstract
"The dry land ecosystems have become fragile becouse of low and erratic rainfall,
improper soil and water cxjnservation practices and lack, of perennial vegetation. Inadequate soil
moisture is the main constraint for the growth of plants in dry lands. There is greater scope to
introduce perennial component to enhance overall productivity of land. Hence, an experiment
was carried out to assess productivity of 10 MPTS as influenced by in-stu moisture
conservation at Regional Agricultural Research Station, Bijapur during 2002-03.
Trenching significantly increased wood volume and total dry biomass. The extent of
increase in these parameters was 25.6 and 15.1 per cent respectively. Among the MPTS, wood
volume and total dry biomass was highest in subabul (48.21 ra^/ha and 304.8 t/ha) followed by
siris (33.0 m^/ha and 221.8 t/ha) and anjan (34.32 m'/ha and 175.2 t/ha).
The growth attributes viz. height, dbh, clear bole height and crown spread differed
significantly due to trenching at all stages. At 12 MAT, the respective increase in these
parameters was 9.6, 14.21, 6.4 and 4.6 per cent due to trenching. Height, dbh and clear bole
height were significantly higher in subabul than in other species.
CAI in height, dbh and crown depths were significantly higher due to trenching.
Subabul recorded significantly higher CAI in height, clear bole height and crown depth;
whereas, these parameters were lowest in dindal. CAI in dbh was significantly higher with
anjan and lowest in dindaL
The interaction between MPTS and trenching was significant. Significantly higher dbh
was noticed in subabul due to trenching; whereas, other species were unaffected. Trenching
significantly increased the CAI in height of babul, siris, cassia and anjan; whereas, other
species were unaffected."
Description
Keywords
null
Citation
No. of references 88