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DOI: | 10.1614/WT-D-14-00068.1 |
Web URL(s): | http://www.bioone.org/doi/pdf/10.1614/WT-D-14-00068.1 Last checked: 08/12/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website http://www.bioone.org/doi/full/10.1614/WT-D-14-00068.1 Last checked: 08/12/2015 Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Beck, Leslie L.;
Patton, Aaron J.;
Law, Quincy D.;
Weisenberger, Daniel V.;
Brosnan, James T.;
Almodóvar, José J. Vargas;
Breeden, Gregory K.;
Kopsell, Dean A. |
Author Affiliation: | Beck: Extension Weed Specialist, Extension Plant Sciences Department, New Mexico State University, Las Cruces, NM; Patton: Associate Professor; Law: Graduate Research Assistant; Weisenberger: Research Agronomist, Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN; Brosnan: Associate Professor; Almodóvar: Research Associate; Breeden: Extension Specialist; Kopsell: Professor, Department of Plant Sciences, The University of Tennessee, Knoxville, TN |
Title: | Mesotrione activity on crabgrass (Digitaria spp.) as influenced by nitrogen fertilization rate, source, and timing |
Section: | Weed management - Other crops/areas Other records with the "Weed management - Other crops/areas" Section
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Source: | Weed Technology. Vol. 29, No. 2, April-June 2015, p. 263-273. |
Publishing Information: | Champaign, Illinois: Weed Science Society of America |
# of Pages: | 11 |
Related Web URL: | http://www.bioone.org/doi/abs/10.1614/WT-D-14-00068.1 Last checked: 08/12/2015 Notes: Abstract only |
Keywords: | TIC Keywords: 4-hydroxyphenyl pyruvate dioxygenase; Crabgrass control; Digitaria; Fertilization rates; Fertilization timing; Herbicide evaluation; Mesotrione; Nitrogen fertilization; Physiological responses; Weed control
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Abstract/Contents: | "Mesotrione, a 4-hydroxyphenylpyruvate dioxygenase-inhibiting herbicide, is labeled for PRE and POST crabgrass control. It has enhanced efficacy on smooth and large crabgrass when applied in conjunction with soil-applied nitrogen (N). The objectives of this study, using crabgrass as the weed species, were to (1) determine the influence of N rate and tissue N concentration on mesotrione activity, (2) determine the influence of N source on mesotrione activity, and (3) determine the influence of N application timing on mesotrione activity. Large crabgrass plants that received 12 kg N ha-1 or more before mesotrione application had more bleached and necrotic leaves compared with plants that received 0 kg N ha-1 7 d after treatment (DAT) in the greenhouse. Although N application rates as high as 98 kg N ha-1 were tested, 90% leaf bleaching and necrosis were observed with rates of 8.9 or 10.1 kg N ha-1 in Tennessee and Indiana, respectively. Nitrogen concentration in large crabgrass leaf and stem tissue on the day of the mesotrione application was closely related to the bleaching and necrosis symptoms observed 7 DAT. Although N rate influenced mesotrione activity, N source did not. Nitrogen application timing was also important, with N applications 3, 1, and 0 d before a mesotrione application having the highest percentage of bleached and necrotic leaves in greenhouse experiments. Both greenhouse and field trials support the finding that N applications in proximity to the mesotrione application enhance herbicide activity. Thus, practitioners can pair N and POST mesotrione applications together or in proximity to enhance crabgrass control." |
Language: | English |
References: | 37 |
Note: | Abstract also appears in Spanish Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Beck, L. L., A. J. Patton, Q. D. Law, D. V. Weisenberger, J. T. Brosnan, J. J. V. Almodóvar, et al. 2015. Mesotrione activity on crabgrass (Digitaria spp.) as influenced by nitrogen fertilization rate, source, and timing. Weed Technol. 29(2):p. 263-273. |
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| DOI: 10.1614/WT-D-14-00068.1 |
| Web URL(s): http://www.bioone.org/doi/pdf/10.1614/WT-D-14-00068.1 Last checked: 08/12/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website http://www.bioone.org/doi/full/10.1614/WT-D-14-00068.1 Last checked: 08/12/2015 Access conditions: Item is within a limited-access website |
| MSU catalog number: b2174615a |
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