Publication Date
1997
Description
New white clover (Trifolium repens) grass pastures were established on shrub-covered hill slopes cleared by bulldozer root raking, The site included north and south aspects, and plots were individually fenced and grazed with sheep with superphosphate treatments of 1815 or 790 kg/ha (9% P). Nitrogen fixation was assessed over 5 years, with up. to 308 kg N/ha fixed in year I. Nitrogen fixation rates declined with time and were 72% higher on the moister southern aspect, and 33% higher with high superphosphate. Clover production showed similar trends. Nitrogen fixation efficiency (kg N fixed/I clover dry matter) increased from 38 in year 1 to 71 in years 3 and 4.
Citation
Rolston, M P.; Crush, J R.; and Devantier, B P., "Improvement of Shrub-Covered Hill Pasture by Root Raking: Effect of Aspect, Superphosphate and Time from Sowing on Nitrogen Fixation and Clover Growth" (2024). IGC Proceedings (1993-2023). 16.
https://uknowledge.uky.edu/igc/1993/session46/16
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Improvement of Shrub-Covered Hill Pasture by Root Raking: Effect of Aspect, Superphosphate and Time from Sowing on Nitrogen Fixation and Clover Growth
New white clover (Trifolium repens) grass pastures were established on shrub-covered hill slopes cleared by bulldozer root raking, The site included north and south aspects, and plots were individually fenced and grazed with sheep with superphosphate treatments of 1815 or 790 kg/ha (9% P). Nitrogen fixation was assessed over 5 years, with up. to 308 kg N/ha fixed in year I. Nitrogen fixation rates declined with time and were 72% higher on the moister southern aspect, and 33% higher with high superphosphate. Clover production showed similar trends. Nitrogen fixation efficiency (kg N fixed/I clover dry matter) increased from 38 in year 1 to 71 in years 3 and 4.
