STUDIES ON WEED MANAGEMENT AND METHODS OF PLANTING IN DIFFERENT LAWN GRASSES
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Date
2019-10-16
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K.R.C COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The present investigation on "Studies on weed management and methods of planting in different lawn grasses" was carried out at Department of Floriculture and Landscape Architecture, Kittur Rani Channamma College of Horticulture, Arabhavi, Gokak taluk, Belgaum district, Karnataka during the year 2018-2019. Experiment was laid out in Factorial Randomized Block Design with 12 treatments combination with an objective to evaluate pre planting weed control methods in different turf grasses and to identify best turf grass species and planting method for early establishment.
Among the two turf grasses evaluated Bermuda grass var. ‘Tif dwarf’ planted plots showed less number of weeds (4.61/m2), early germination and sprouting (7.28 days), high ground cover score (5.00), chlorophyll content (2.48 mg/g), number of leaves per stolon (30.74), number of roots (124.00), root length (22.86 cm) and root diameter (1.23 mm) compared to Mexican grass planted plots. Stolon dibbling method of establishment recorded highest ground cover score (4.85), number of nodes (27.51), number of leaves (29.74), total chlorophyll content (2.68 mg/g), higher number of roots (179.17), root fresh weight (8.82 g), root dry weight (5.30 g), root length density (15.60 cm/gm-3) and root mass density (11.01 g/gm-3). While lowest total weed count (9.56/m2) and less days taken for germination and sprouting (11.00 days) was recorded by seed sowing method at 10 g/m2. Among weed management approaches Dizomet (MZ) applied plots showed less number of weeds at 40 DAP (9.68/m2) than hand weeded plots.
Interaction effect showed less number of weeds in Dizomet applied plots established through stolon dibbling (8.46/m2). Stolon dibbling method of establishment with Bermuda grass var. ‘Tif dwarf’ at 160 days after planting recorded highest values for total chlorophyll content (3.09 mg/g), stolon length (35.57 cm), number of nodes (39.61) and number of leaves (42.78).
Among weed management approaches chemical weeding using Dizomet (MZ) recorded considerable control of weeds. Method of establishment through stolon dibbling was found superior with respect to growth and development while seed sowing method recorded early establishment. Among the two turf grass species Bermuda grass var. ‘Tif dwarf’ was superior to Mexican grass.
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