Key Morphological Events following Late-Season Goosegrass (<i>Eleusine indica</i>) Germination

Kerr, Robert A.; McCarty, Lambert B.; Bridges, William C.; Cutulle, Matthew

doi:10.1017/wet.2018.93

Cited by 5 publications

(5 citation statements)

References 21 publications

(31 reference statements)

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“…At the rates used on golf putting greens, these herbicides rarely provided residual protection to prevent summer annual grass emergence for more than a few months (Callahan 1986;Dernoeden et al 1984;Johnson 1994b). Because goosegrass and smooth crabgrass emergence patterns (Chauhan and Johnson 2008;Fidanza et al 1996) overlap with creeping bentgrass summer stress, often caused by soil-borne pathogens, insects, heat, and drought (Beard 2002;Dernoeden 2000;Miller and Brotherton 2020), it may be necessary to reapply these herbicides to maintain season-long control (Chauhan and Johnson 2008;Fidanza et al 1996;Kerr et al 2018). In the transition zone and areas farther south, goosegrass and smooth crabgrass readily infest areas on golf putting greens where the turf canopy has been compromised due to stress (Miller and Brotherton 2020;Samaranayake et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Brewer

Askew

2021

Weed Technol

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Only four herbicides are registered for smooth crabgrass or goosegrass control on creeping bentgrass golf putting greens. None of the four herbicides control weedy grasses for the entire season or control weeds postemergence when applied once at labeled rates. Three of these have product labels that prohibit repeated use or application during stressful summer conditions. We hypothesized frequently applying herbicides at low doses could provide season-long control of summer grasses while minimizing turf injury. Seven field experiments were conducted on creeping bentgrass putting greens to evaluate various herbicides applied monthly, biweekly, or weekly for postemergence and residual control of goosegrass and smooth crabgrass as well as creeping bentgrass putting green tolerance. Metamifop applied twice monthly at 200 g ai ha−1, topramezone applied eight times weekly at 1.5 g ae ha−1, and siduron applied weekly at 5.6 kg ai ha−1 or four times biweekly at 11 kg ha−1 did not injure creeping bentgrass greater than 10% and maintained creeping bentgrass quality and cover equivalent to nontreated turf. Weekly or biweekly programs of fenoxaprop or quinclorac caused unacceptable injury and quality decline. Metamifop applied monthly and either fenoxaprop program controlled both smooth crabgrass and goosegrass 97 to 99% throughout the growing season. Programs containing either quinclorac or siduron controlled smooth crabgrass 99 to 100% but did not control goosegrass greater than 39%. All topramezone programs controlled smooth crabgrass 69 to 77% and goosegrass 93 to 98%. In additional studies, siduron applied five times biweekly did not injure creeping bentgrass putting greens and controlled smooth crabgrass greater than 90% at seasonal, cumulative rates between 17 and 65 kg ai ha−1. This method of frequent, low-dose herbicide treatment to control smooth crabgrass and goosegrass on golf putting greens is novel and could be legally implemented currently with siduron.

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Section: Introductionmentioning

confidence: 99%

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Brewer

Askew

2021

Weed Technol

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“…Nishimoto and McCarty (1997) noted optimal (99%) germination with fluctuating temperatures; 20°C for 16 h and 35°C for 8 h with supplemental light. Kerr et al (2018) noted goosegrass life cycle was complete 68 d after emergence in late-summer/early autumn in Clemson, SC. Typically, goosegrass plants are killed with the first frost; however, in the tropical regions of the world, plants continue to tiller year round and behave more like a perennial.…”

mentioning

confidence: 99%

Goosegrass Control and Turfgrass Injury Following Metribuzin and Topramezone Application with Immediate Irrigation

Kerr¹,

McCarty²,

Cutulle³

et al. 2019

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Goosegrass (Eleusine indica L. Gaertn.) is a problematic C4 weedy grass species, occurring in the warmer regions of the world where it is difficult to selectively control without injuring the turfgrass. Furthermore, control efficacy is affected by plant maturity. End-user options for satisfactory goosegrass control has decreased; thus, the need for developing management techniques to improve the selectivity of POST goosegrass control options in turfgrass systems is ever increasing. One possible means of providing control, yet maintaining turf quality is immediately incorporating applied products via irrigation. Greenhouse and field trials were conducted in Pickens County, SC, with the objectives of 1) evaluating turfgrass injury following use of POST goosegrass control options; 2) assessing if irrigating (0.6 cm) immediately following the herbicide application reduces injury of ‘Tifway 419’ bermudagrass [Cynodon dactylon (L.) Pers. × Cynodon transvaalensis Burtt-Davy]; and 3) determining if immediate irrigation influences goosegrass control at one- to three-tiller and mature growth stage. Following the application of herbicide treatments, irrigation was applied (+) or not applied (−). Treatments included the following: control (+/− irrigation); topramezone at 12.3 g a.i./ha (+/− irrigation); metribuzin at 420 g a.i./ha (+/− irrigation); and topramezone plus metribuzin (+/− irrigation) at 12.3 and 420 g a.i./ha. Irrigation treatment had minimum effect on greenhouse-grown goosegrass biomass, all treatments provided >85% control of 1- to 3-tiller goosegrass plants. However, control for mature plants was <50% for topramezone- and 60% to 70% for metribuzin-containing treatments. In field studies, at 1 week after treatment (WAT), the irrigated metribuzin and topramezone plus metribuzin had ≈37% and ≈16%, respectively, less goosegrass control vs. nonirrigated treatments. At 2WAT, irrigated metribuzin and irrigated topramezone plus metribuzin–treated plots, had ≈50% less mature goosegrass control vs. nonirrigated treatments. Irrigated herbicide treatments, however, experienced ≈23% less turfgrass injury at this time. At 4 WAT, irrigated metribuzin- and irrigated topramezone plus metribuzin–treated plots experienced reduced mature goosegrass control by ≈65% and ≈59%, respectively. Overall, incorporating POST herbicide applications via 0.6 cm of irrigation reduced turfgrass injury by at least 20% for all herbicide treatments, while maintaining goosegrass control.

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“…Eleusine indica germination curve (Kerr et al, 2018) and growth curve of satsuma mandarin (Citrus unshiu Marc.) (Yano et al, 2018) and strawberry production curve (Diel et al, 2019) Kiwi fruit drying kinetics (Sadeghi, et al, 2019)…”

Section: Regression Modelsmentioning

confidence: 99%

AgroReg: main regression models in agricultural sciences implemented as an R Package

Shimizu

Gonçalves

2023

Sci. agric. (Piracicaba, Braz.)

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Regression analysis is highly relevant to agricultural sciences since many of the factors studied are quantitative. Researchers have generally used polynomial models to explain their experimental results, mainly because much of the existing software perform this analysis and a lack of knowledge of other models. On the other hand, many of the natural phenomena do not present such behavior; nevertheless, the use of non-linear models is costly and requires advanced knowledge of language programming such as R. Thus, this work presents several regression models found in scientific studies, implementing them in the form of an R package called AgroReg. The package comprises 44 analysis functions with 66 regression models such as polynomial, non-parametric (loess), segmented, logistic, exponential, and logarithmic, among others. The functions provide the coefficient of determination (R 2 ), model coefficients and the respective p-values from the t-test, root mean square error (RMSE), Akaike's information criterion (AIC), Bayesian information criterion (BIC), maximum and minimum predicted values, and the regression plot. Furthermore, other measures of model quality and graphical analysis of residuals are also included. The package can be downloaded from the CRAN repository using the command: install.packages("AgroReg"). AgroReg is a promising analysis tool in agricultural research on account of its user-friendly and straightforward functions that allow for fast and efficient data processing with greater reliability and relevant information.

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Key Morphological Events following Late-Season Goosegrass (Eleusine indica) Germination

Cited by 5 publications

References 21 publications

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Investigating low-dose herbicide programs for goosegrass (Eleusine indica) and smooth crabgrass (Digitaria ischaemum) control on creeping bentgrass greens

Goosegrass Control and Turfgrass Injury Following Metribuzin and Topramezone Application with Immediate Irrigation

AgroReg: main regression models in agricultural sciences implemented as an R Package

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