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Factors Affecting Foliar Nitrogen Uptake by Creeping Bentgrass
Author(s) -
Henning S. W.,
Mulvaney R. L.,
Branham B. E.
Publication year - 2013
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2012.11.0650
Subject(s) - agrostis stolonifera , agrostis , biology , nitrogen , fertilizer , agronomy , field experiment , horticulture , poaceae , chemistry , organic chemistry
Turfgrass managers frequently apply N as a foliar spray when low application rates are desired. This practice is believed to promote foliar N uptake that benefits turf; however, very little information is available concerning the quantity of N absorbed by turfgrass foliage or the effect of various spray parameters on foliar N uptake under field conditions. This research was conducted to evaluate fertilizer N uptake efficiency of foliarly applied 15 N to creeping bentgrass [ Agrostis stolonifera var. L. palustris (Huds.) Farw. ‘Pennlinks’] under field conditions. The effects of spray volume, N carrier, adjuvant addition, and tank mixing with commonly applied turf care products (e.g. chlorothalonil) on foliar N uptake were conducted to evaluate foliar uptake of fertilizer 15 N by creeping bentgrass. From 6 to 34% of foliar‐applied N was taken up mostly within 2 h and completely by 4 to 6 h after fertilizer application. Uptake efficiency increased significantly when spray volume was decreased but was unaffected by N carrier, adjuvant addition, or tank mixing.