Bermudagrass tolerance of indaziflam PRE applications in forage production

Hurdle, Nicholas L.; Grey, Timothy L.; McCullough, Patrick E.; Shilling, Donn G.; Belcher, Jason

doi:10.1017/wet.2019.76

Cited by 6 publications

(11 citation statements)

References 14 publications

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“… Ekeleme et al (2020) obtained similar results in another study in Oyo State in Nigeria and attributed the delay in sprouting to indaziflam, which suppressed buds exposed to the herbicide. Nicholas et al (2019) reported that indaziflam at 155 and 234 g ha −1 caused transient stunting of Bermuda grass at 44 days after planting. Indaziflam is a nonselective cellulose-inhibiting herbicide that affects cell elongation and the growing meristematic regions ( Brabham et al, 2014 ; Edwards et al, 2015 ; Neal, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Increasing cassava root yield on farmers' fields in Nigeria through appropriate weed management

et al. 2021

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Weed competition is the major biological stress affecting cassava production in smallholder farms in West and Central Africa, where yields are low compared with those in Asia and Latin America. Options for improved weed management are crucial in increasing productivity. Selected pre- and post-emergence herbicides, integrated with appropriate tillage and plant spacing, were tested in 96 sites in four locations in Nigeria, 24 in 2016 and 72 in 2017. Trials were split plots with six pre-emergence herbicides and no post-emergence treatment as main plots. Subplot treatments were four post-emergence herbicides, weeding with a motorized rotary weeder, short- and long-handled hoes, and no post-emergence weed control, i.e., regardless of pre-emergence treatments. Indaziflam-based treatments, irrespective of post-emergence treatment, and flumioxazin + pyroxasulfone applied pre-emergence followed by one weeding with a long-handled hoe provided >80% control of major broadleaf and grass weeds. Compared with herbicide use, farmer control practices (53%) were not efficient in controlling weeds. The highest root yield was produced where (1) s-metolachlor was combined with atrazine, and one weeding with a long-handled hoe or clethodim with lactofen, and (2) indaziflam + isoxaflutole was combined with glyphosate. An increase in root yield from 3.41 to 14.2 t ha- 1 and from 3.0 to 11.99 t ha- 1 was obtained where herbicides were used compared with farmers’ practice and manual hoe weeding. Our results showed that integrating good agronomic practices with safe and effective use of appropriate herbicides can result in root yield >20 t ha −1. i.e., twice the national average root yield of 8–12 t ha −1 , with >50% net profit. The use of appropriate herbicides can reduce the amount of manual labor required and improve livelihoods, specifically for women and children. Smallholder cassava farmers would require continuous training on the safe use and handling of herbicides to improve efficiency and prevent adverse effects on humans and the environment.

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Section: Resultsmentioning

confidence: 99%

Increasing cassava root yield on farmers' fields in Nigeria through appropriate weed management

et al. 2021

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“…Blackberry primocanes and floricanes exhibited no visual injury to any herbicide treatment (data not shown). As previously noted, there are many reports of little to no visual injury for indaziflam applied to perennial crops (Basinger et al 2019;González-Delgado et al 2017;Grey et al 2018Grey et al , 2016Hurdle et al 2019).…”

Section: Blackberrymentioning

confidence: 88%

“…This was always transient and no longer noted 8 wk after treatment. Many reports of little to no visual injury have been made for indaziflam applied to perennial crops (Basinger et al 2019;González-Delgado et al 2017;Grey et al 2018Grey et al , 2016Hurdle et al 2019).…”

Section: Blueberrymentioning

confidence: 99%

“…Grey et al (2016Grey et al ( , 2018 reported that rates of indaziflam up to 150 g ai ha −1 did not cause injury when applied to olive and pecan trees, when up to five applications were made over 3 yr (respectively). It was also reported that indaziflam applied at 234 g ai ha −1 in a bermudagrass forage setting had minimal chlorosis and no effect on yield compared with nontreated controls (Hurdle et al 2019). However, some reports of chlorosis and other injury have been reported in pecan (González-Delgado et al 2017) and turf (Jeffries et al 2016).…”

Section: Introductionmentioning

confidence: 95%

“…As a PRE herbicide, it is used in numerous crop settings and has shown to be safe to perennial crops including grapes (Vitis vinifera L.; Basinger et al 2019), olive (Olea europaea L.; Grey et al 2016), pecan (Carya Illinoinensis Wangenh. ; Grey et al 2018), bermudagrass forage (Cynodon dactylon L.; Hurdle et al 2019), turf (McCullough et al 2013, and citrus (Jhala et al 2013). These studies indicate that indaziflam is safe to use in numerous crop settings, but minimal information exists for its use on blueberry and blackberry.…”

Section: Introductionmentioning

confidence: 99%

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Blueberry and blackberry are tolerant to repeated indaziflam applications

et al. 2021

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Numerous perennial horticultural crops are grown across the southeastern US. Blueberry and blackberry (also known as caneberry) are commonly found in roadside stands, promote agritourism with the pick your own markets, are important for fresh market commercial production in the region, and when processed, provide desirable value added products. Season-long weed control using residual herbicides is crucial for these perennial fruit crops to maximize berry quality and yield. Studies performed from 2012 to 2014 in Lanier and Clinch counties in Georgia evaluated the effects of repeated applications of indaziflam at 35, 75, or 145 g ai ha-1 applied biannually in March and September (5 total applications) on growth of ‘Alapaha’ rabbiteye and ‘Palmetto’ highbush blueberry, and ‘Apache’ thornless blackberry. All indaziflam treatments were mixed with glufosinate, and a glufosinate only treatment was included as a check. Minor leaf chlorosis (<10%) was noted within 30 days after application for all blueberries for all treatments, but this was always transient. Blueberry stem diameter was not different for any treatment, even when indaziflam was applied up to 725 g ai ha-1 over three years as compared to glufosinate alone. There was no chlorosis or stem diameter differences for blackberry noted for any treatment. Indaziflam applied in blueberry and blackberry production provides season-long control of numerous troublesome weed species, without causing injury or negatively impacting crop growth.

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Challenges in bermudagrass production in the southeastern USA

Baxter,

Anderson,

Gates

et al. 2024

Grassland Research

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Bermudagrass (Cynodon dactylon (L.) Pers.) is one of the primary perennial forages in the southeastern USA. Newer hybrid cultivars have superior production and nutritive value compared to common ecotypes. However, there are many challenges facing bermudagrass production in the region. First, the bermudagrass stem maggot (BSM; Atherigona reversura Villeneuve) has severely damaged bermudagrass throughout the region. Strategically timed pyrethroid applications significantly reduce adult BSM populations, but efforts are needed to develop integrated pest management plans. Second, an increasing number of producers are noting challenges with green‐up following winter dormancy. This may be attributed to disease, unbalanced soil fertility, and weed pressure. Perhaps one of the most limiting factors for continued production is the deficit of sprigs and trained personnel to sprig hybrid bermudagrasses. This research is critically important as the need for cold‐tolerant bermudagrass is increasing as tall fescue (Lolium arundinaceum (Schreb.) S. J. Darbyshire) is declining due to changes in temperature and precipitation throughout the northern parts of the region. Plant breeders are investigating hybrid bermudagrass at latitudes >35° with respect to freeze or cold tolerance. Despite the many challenges facing hybrid bermudagrass in the southeastern USA, researchers are working to ensure its persistence, productivity, and availability for the future.

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Bermudagrass tolerance of indaziflam PRE applications in forage production

Cited by 6 publications

References 14 publications

Increasing cassava root yield on farmers' fields in Nigeria through appropriate weed management

Increasing cassava root yield on farmers' fields in Nigeria through appropriate weed management

Blueberry and blackberry are tolerant to repeated indaziflam applications

Challenges in bermudagrass production in the southeastern USA

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