We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Foliar Nitrogen Uptake Following Urea Application to Putting Green Turfgrass Species.
- Authors
Stiegler, J. Chris; Richardson, Michael D.; Karcher, Douglas E.
- Abstract
Foliar fertilization often comprises a significant portion of the total annual N applied to putting greens. This study was initiated to evaluate the efficiency of this practice under field conditions. 15N-labeled urea was used to quantify seasonal uptake of foliar-applied N by creeping bentgrass (Agrostis stolonifera var. L. palustris (Huds.) Farw. 'Penn Al') and hybrid bermudagrass (Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt Davy 'Tifeagle') managed as putting greens. Urea was spray-applied monthly, May through September, at rates of 0.5 and 1.25 g N m-2. Both species absorbed urea rapidly, with 24 to 67% of the fertilizer N entering the foliage within 1 h following treatment; peak foliar absorption was generally observed at 4 h after treatment. Percentage of foliar uptake was significantly reduced at higher application rates for both species. In addition, absorption of urea-N by foliage of both species was affected by month of application and year. When averaged across all sampling times and N rates, foliar absorption percentages were similar between the two species, ranging from 36 to 69% for creeping bentgrass and 38 to 62% for bermudagrass. Overall, foliar absorption efficiency was variable and there were no consistent seasonal trends associated with these differences.
- Subjects
FOLIAR feeding; TURFGRASSES; EFFECT of nitrogen on plants; AGROSTIS; BERMUDA grass; APPLICATION of liquid fertilizers
- Publication
Crop Science, 2011, Vol 51, Issue 3, p1253
- ISSN
0011-183X
- Publication type
Article
- DOI
10.2135/cropsci2010.06.0377