Publication Date
1993
Description
Introduction of forage legumes into grass-dominant swards by sodseeding may greatly improve vegetation and herbage production. Two field experiments were carried out to introduce red clover (Trifolimn pratense L.) into timothy (Phleum pratense L.)-dominant swards by the cultivation of sward surface without chemical suppression of existing timothy: I) Cultivation of the whole grassland (A) with rotary-harrow or disc-harrow or the partial cultivation (B) with slot-seeder, using John Deere PowrTillseeder or Hunter Rotary strip seeder, provided satisfactory seed-bed forsod-seeded clover, 2) Suppression effects on existing timothy by cultivation treatments influenced the establishment of sod-seeded clover, and effects varied according to the cultivation methods, (A) gave greater suppression than (B). 3) Both frequency of defoliation in the autumn of the treatment year, especially in the combination of slot-seeding, and nitrogen application level in the early spring of the following year were regarded as important as post-seeding management for promoting the establishment of introduced clover. 4) Combinations of surface cultivation, suitable defoliation ( I time in (A) or 1 or 2 times in (B)) in the autumn and nitrogen application (0 or 20 kg/ha) in the spring, produced dry matter yields of S I/ha for clover and 10 t/ha for clover plus timothy during the second year after establishment.
Citation
Takeda, Yoshihiko, "Improvement of Grass-Dominated Swards by Sod-Seeding in Eastern Hokkaido, Japan" (2024). IGC Proceedings (1993-2023). 13.
https://uknowledge.uky.edu/igc/1993/session17/13
Included in
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Improvement of Grass-Dominated Swards by Sod-Seeding in Eastern Hokkaido, Japan
Introduction of forage legumes into grass-dominant swards by sodseeding may greatly improve vegetation and herbage production. Two field experiments were carried out to introduce red clover (Trifolimn pratense L.) into timothy (Phleum pratense L.)-dominant swards by the cultivation of sward surface without chemical suppression of existing timothy: I) Cultivation of the whole grassland (A) with rotary-harrow or disc-harrow or the partial cultivation (B) with slot-seeder, using John Deere PowrTillseeder or Hunter Rotary strip seeder, provided satisfactory seed-bed forsod-seeded clover, 2) Suppression effects on existing timothy by cultivation treatments influenced the establishment of sod-seeded clover, and effects varied according to the cultivation methods, (A) gave greater suppression than (B). 3) Both frequency of defoliation in the autumn of the treatment year, especially in the combination of slot-seeding, and nitrogen application level in the early spring of the following year were regarded as important as post-seeding management for promoting the establishment of introduced clover. 4) Combinations of surface cultivation, suitable defoliation ( I time in (A) or 1 or 2 times in (B)) in the autumn and nitrogen application (0 or 20 kg/ha) in the spring, produced dry matter yields of S I/ha for clover and 10 t/ha for clover plus timothy during the second year after establishment.
