Smooth Crabgrass Control with Indaziflam at Various Spring Timings

Brosnan, James T.; McCullough, Patrick E.; Breeden, Gregory K.

doi:10.1614/wt-d-11-00005.1

Cited by 52 publications

(51 citation statements)

References 15 publications

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“…Bermudagrass exhibited the least amount of recovery (13 to 14%) from SDS 14 WAT in response to indaziflam at 0.035 kg/ha. Indaziflam is an alkylazine herbicide that controls susceptible grass and broadleaf weeds through the inhibition of cellulose biosynthesis (11,12). Although indaziflam offers turfgrass managers an alternate mode of action for the control of key turfgrass weeds (2,9,11,12,25), long soil residual activity (> 150 days) may limit bermudagrass recovery from stress.…”

Section: Bermudagrass Recovery In Response To Pre Herbicidesmentioning

confidence: 99%

Effect of Preemergence Herbicides on the Recovery of Bermudagrass from Spring Dead Spot

Beck

Cooper

Hephner

et al. 2013

Applied Turfgrass Science

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Field experiments were conducted in Texas to examine the recovery of a bermudagrass [Cynodon dactylon × C. transvaalensis (L.) Pers.] fairway from spring dead spot (SDS) disease following preemergence (PRE) herbicide applications. In 2011 and 2012 bermudagrass recovery from SDS in the non‐treated check plots (46 and 59%, respectively) was similar to bermudagrass recovery in response to oxadiazon at 3.4 kg/ha (55 and 57%, respectively) 14 weeks after treatment (WAT). Pendimethalin at 2.5 kg/ha resulted in 33 to 38% bermudagrass recovery from SDS 14 WAT. In 2011, oryzalin (1.68 kg/ha), dithiopyr (0.56 kg/ha), prodiamine (0.73 kg/ha), and dimethenamid (1.68 kg/ha) applications resulted in 21 to 25% bermudagrass recovery from SDS 14 WAT. In 2012, bermudagrass exhibited similar recovery in response to prodiamine and oryzalin (24 and 26%, respectively), while response to dithiopyr and dimethenamid was 33 and 34%, respectively, 14 WAT. Bermudagrass exhibited the least amount of recovery (13 to 14%) in response to indaziflam at 0.035 kg/ha, regardless of year. Oxadiazon can be safely used as a PRE option when bermudagrass is recovering from SDS, while the use of oryzalin, prodiamine, dithiopyr, dimethenamid, pendimethalin, and indaziflam may limit recovery and further contribute to a weakened turfgrass system.

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Section: Bermudagrass Recovery In Response To Pre Herbicidesmentioning

confidence: 99%

Effect of Preemergence Herbicides on the Recovery of Bermudagrass from Spring Dead Spot

Beck

Cooper

Hephner

et al. 2013

Applied Turfgrass Science

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“…Indaziflam is labeled for use in turf, for perennial crops, and for nonagricultural situations for preemergent control of grasses and broadleaf weeds (Meyer et al, 2009;Brosnan et al, 2011). The aim herein was to investigate indaziflam as a CBI and to characterize its inhibitory effect on cellulose biosynthesis.…”

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confidence: 99%

Indaziflam Herbicidal Action: A Potent Cellulose Biosynthesis Inhibitor

Brabham¹,

Lei

et al. 2014

Plant Physiology

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Cellulose biosynthesis is a common feature of land plants. Therefore, cellulose biosynthesis inhibitors (CBIs) have a potentially broad-acting herbicidal mode of action and are also useful tools in decoding fundamental aspects of cellulose biosynthesis. Here, we characterize the herbicide indaziflam as a CBI and provide insight into its inhibitory mechanism. Indaziflam-treated seedlings exhibited the CBI-like symptomologies of radial swelling and ectopic lignification. Furthermore, indaziflam inhibited the production of cellulose within ,1 h of treatment and in a dose-dependent manner. Unlike the CBI isoxaben, indaziflam had strong CBI activity in both a monocotylonous plant (Poa annua) and a dicotyledonous plant (Arabidopsis [Arabidopsis thaliana]). Arabidopsis mutants resistant to known CBIs isoxaben or quinoxyphen were not cross resistant to indaziflam, suggesting a different molecular target for indaziflam. To explore this further, we monitored the distribution and mobility of fluorescently labeled CELLULOSE SYNTHASE A (CESA) proteins in living cells of Arabidopsis during indaziflam exposure. Indaziflam caused a reduction in the velocity of YELLOW FLUORESCENT PROTEIN:CESA6 particles at the plasma membrane focal plane compared with controls. Microtubule morphology and motility were not altered after indaziflam treatment. In the hypocotyl expansion zone, indaziflam caused an atypical increase in the density of plasma membrane-localized CESA particles. Interestingly, this was accompanied by a cellulose synthase interacting1-independent reduction in the normal coincidence rate between microtubules and CESA particles. As a CBI, for which there is little evidence of evolved weed resistance, indaziflam represents an important addition to the action mechanisms available for weed management.

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“…No herbicide belonging to this chemical group has been registered for use in Brazil (AGROFIT, 2016). This herbicide controls monocots and eudicots during pre-emergence or early post-emergence (BROSNAN et al, 2011;PERRY et al, 2011;BROSNAN et al, 2012); however, it is more effective for the control of monocots (KAAPRO;HALL, 2012). Regarding its physicochemical characteristics, indaziflam has low solubility in water (0.0028 kg m -3 at 20 °C), a K oc < 1,000 mL g -1 of organic carbon, a dissociation coefficient (pKa) of 3.5, an octanol-water partition coefficient (log K ow) of 2.8, and a vapor pressure of 5.1 x 10 -10 mmHg at 25 °C (TOMPKINS, 2010).…”

Section: Introductionmentioning

confidence: 99%

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

Malardo

Monquero

Santos

et al. 2017

SCA

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Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence Influência da profundidade de semeadura e da quantidade de palha de cana-de-açúcar na emergência de Chloris polydactyla e Eleusine indica e controle por herbicidas aplicados em pré-emergência AbstractThe objective of this study was to evaluate the effect of the sowing depth and amount of sugarcane straw on the soil on the emergence of Chloris polydactyla ('capim-branco') and Eleusine indica (Indian goosegrass) and to determine the efficacy of herbicides applied pre-emergence in the control of these species under different straw amount and rainfall regime conditions. The experiments were conducted in a completely randomized design with four replications. In the first experiment, the effects of six sowing depths (0.5, 1, 2, 4, 8, and 10 cm) and six sugarcane straw amounts (0, 1, 2, 4, 8 and 10 t ha -1 ) were assessed on the emergence of Indian goosegrass and 'capim-branco' in a 6 x 6 factorial arrangement. In the second experiment, the efficacy in the control of these species was evaluated for one control without herbicide and five treatments (indaziflam, metribuzin, tebuthiuron, indaziflam + metribuzin, and indaziflam + tebuthiuron) applied pre-emergence over four straw amounts (0, 1, 2, and 4 t ha -1 ) in a 6 x 4 factorial arrangement. This experiment was evaluated under two rainfall regimes in separate experiments (simulation of 20 mm of rainfall 1 or 10 days after herbicide application). The 'capim-branco' showed a marked reduction in emergence beginning at 2 t ha -1 of straw and a 2 cm sowing depth. For the Indian goosegrass, the decline in emergence mainly occurred beginning at 4 t ha -1 of straw and a 4 cm sowing depth. Only some of the Indian goosegrass plants emerged at the greater sowing depths (8 and 10 cm) and straw amounts (8 and 10 t ha -1 ), whereas no emergence of the 'capimbranco' was observed under these conditions. The treatments with sowing at a 1 cm depth and with 0, 1, 2, and 4 t ha -1 of straw provided the highest emergence percentage for the species. Application of the herbicide indaziflam alone was the only ineffective treatment for the control of the weeds regardless of the amount of straw and the water regime used. We concluded that the increase in the sowing depth and the amount of straw significantly reduced the emergence of the species and that the presence of straw and the dry period interfered with the herbicide efficacy. Key words: Indian goosegrass. 'Capim-branco'. Sugarcane. Straw. ResumoObjetivou-se com esse trabalho avaliar o efeito da profundidade de semeadura e da quantidade de palha de cana-de-açúcar sobre o solo na emergência de Chloris polydactyla (capim-branco) e Eleusine indica (capim pé-de-galinha), assim como determinar a eficácia de herbicidas aplicados em pré-emergência no controle dessas espécies, sob diferentes quantidades de palha e regimes de precipitação pluvial. Os experimentos foram real...

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Smooth Crabgrass Control with Indaziflam at Various Spring Timings

Cited by 52 publications

References 15 publications

Effect of Preemergence Herbicides on the Recovery of Bermudagrass from Spring Dead Spot

Effect of Preemergence Herbicides on the Recovery of Bermudagrass from Spring Dead Spot

Indaziflam Herbicidal Action: A Potent Cellulose Biosynthesis Inhibitor

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

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