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Methiozolin [5-(2,6-difluorobenzyl)oxymethyl-5-methyl-3,3(3-methylthiophen-2-yl)-1,2-isoxazoline], a new annual bluegrass (Poa annua L.) herbicide for turfgrasses

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BACKGROUND:Selective control ofannualbluegrass(Poaannual L.)hasbeendifficult in turfgrasses.Thepotential ofmethiozolin in this area was investigated.
RESULTS: Methiozolin was safe on established zoysiagrass (Zoysia japonica Steud.), creeping bentgrass (Agrostis palustris Huds.), Kentucky bluegrass (Poa pratensis L.), and perennial ryegrass (Lolium perenne L.) at 1000 g ha−1, and controlled annual bluegrass withGR50 values of 23, 52, 104, and 218 g ha−1 at PRE, two-, four- and eight-leaf stage, respectively, in the greenhouse. Whenapplied at early flowering, methiozolin suppressed>80%of annual bluegrass seed heads at 2000 g ha−1. 14C-Methiozolin was readily absorbed by both leaves and roots, but translocation was mainly acropetal. No herbicidal activity resulted from application to the leaf only; however, application to the soil surface only showed equivalent herbicidal activity to that of
broadcast application to the leaf and soil. Methiozolin at 500 to 1000 g ha−1 provided 80 to 100% control of annual bluegrass when applied in the fall with acceptable and temporary injury to creeping bentgrass, and about 60% control when applied in the spring with no bentgrass injury in the field.
CONCLUSION: Methiozolin is an excellent candidate for annual bluegrass management in turfgrasses.

Keywords: methiozolin; MRC-01; turf herbicide; annual bluegrass; creeping bentgrass

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Informasi Detail

Judul Seri

Pest Manag Sci

No. Panggil

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Penerbit

: Society of Chemical Industry., 2014

Deskripsi Fisik

Pest Manag Sci 2014; 70: 156–162

Bahasa

English

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PERTANIAN.

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Pernyataan Tanggungjawab

agus

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