Propanil and Adjuvants for Barnyardgrass Control in Rice

Smith, R. J.

doi:10.1017/s0043174500037929

Cited by 3 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When bamyardgrass was treated at the four-leaf stage with propanil, adjuvants did not increase control. However, when applied to jointing barnyardgrass, the addition of surfactant or crop oil increased control (14).…”

Section: Introductionmentioning

confidence: 98%

Effect of Adjuvants on Weed Control and Soybean (Glycine max) Tolerance with AC 263,222

Wixson

Shaw

1991

Weed technol.

View full text Add to dashboard Cite

Field experiments were established to observe the effects of adjuvants and time of application on weed control and ‘Terra-Vig 515’ soybean tolerance with POST applications of AC 263,222. A nonionic surfactant or a crop oil concentrate increased sicklepod control with AC 263,222 applied at either V2 or V6 soybean growth stages. Sicklepod control increased as AC 263,222 was increased from 35 to 70 g ai ha–1only when applied without an adjuvant. Late in the season, there was no difference in sicklepod control between V2 and V6 applications. Adjuvants and application timing within herbicide treatments had no effect on pitted morningglory control, and, though adjuvants increased common cocklebur control, all treatments controlled more than 85% of both species. AC 263,222 with adjuvants at all rates and timings injured and stunted soybean more 2 wk after treatment compared to AC 263,222 alone. AC 263,222 at 35 or 70 g ha–1with crop oil concentrate reduced yields more than AC 263,222, with either a surfactant or no adjuvant when applied to V2 soybeans.

show abstract

Section: Introductionmentioning

confidence: 98%

Effect of Adjuvants on Weed Control and Soybean (Glycine max) Tolerance with AC 263,222

Wixson

Shaw

1991

Weed technol.

View full text Add to dashboard Cite

show abstract

“…That finding leads to the suggestion that management strategies that delay the germination or growth of Echinochloa species relative to rice may give the crop a significant competitive advantage. Early competition from barnyardgrass for up to 20 d did not cause any rice yield loss in Arkansas (Smith 1974). The interactions between weed and crop could be influenced by several variables, two of which would be maturity of the crop and crop stature.…”

Section: Interference With Ricementioning

confidence: 94%

“…Interference by barnyardgrass at 50 plants m −2 reduced rice yields of a short-statured cultivar and a semidwarf cultivar by 28% and 65%, respectively, from season-long competition, and barnyardgrass densities of 5 to 10 plants m −2 were determined to be economic thresholds for shortstatured rice cultivars (Stauber et al 1991). Among semidwarf cultivars, those with a longer maturity period competed more effectively with barnyardgrass (Smith 1974). In a water-seeded culture in California, barnyardgrass at a density of 86 plants m −2 reduced rice grain yields by 50% (Hill et al 1985).…”

Section: Interference With Ricementioning

confidence: 99%

“…The introduction of late watergrass was primarily as a seed contaminant of rice seed stocks, as indicated by its collections right after the commencement of rice culture in California in 1912 through 1915 (Barrett and Seaman 1980). Late watergrass established in monoculture Californian rice fields in the 1970s and is rarely found outside of the rice agroecosystem (Barrett and Wilson 1981), but this variety is not present in the mid-South rice growing regions (Smith 1970). In California, it is called "late watergrass" because it flowers late in August to September ("late form") with a close synchrony to rice.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Echinochloa in mid-southern U.S. and California rice: What is known and what are the knowledge gaps?

Godar

Norsworthy

2023

Weed Technol

View full text Add to dashboard Cite

Several Echinochloa P. Beauv. species, introduced at multiple events, have established themselves as a persistent concern for US rice production. In this review, we highlight the key biological characteristics of economically relevant Echinochloa in US rice, revisit their historical trajectory, and put forward research directions for their management with special reference to barnyardgrass. Ecologically-differentiated Echinochloa species have a distinct association with rice culture methods that have been practiced in a region, barnyardgrass being historically predominant in drill-seeded rice in the mid-South, and early watergrass and late watergrass in water-seeded California rice for the last few decades. However, the emerging evidence challenges the dogma that other Echinochloa species for the specific regions are of less importance. Primarily managed by the water-seeding method of rice culture in the early years, Echinochloa species have persisted in the sophisticated US rice culture through the evolution of resistance to herbicides in the later course. Accumulating knowledge, including those of recent genomic insights, suggests the rapid adaptability of Echinochloa. The last decade has seen a (re)emergence of non-chemical methods as a key component of a sustainable management approach, among which use of harvest weed seed control (HWSC) methods and cover crops in the mid-South and stale-drill seeding in California are being considered as potential tools for management of Echinochloa. In recent years, furrow-irrigated rice has rapidly supplanted a significant proportion of conventionally flooded rice in the mid-South, whereas the propensity for compromised continuous submergence is increasing in California rice. On the cusp of this shift, the question at the forefront is how this will affect Echinochloa interference in rice and how this change will dictate the management efforts. Future research will develop a clear understanding of the impact of the changing agroecosystems on Echinochloa species as well as their response to the prospective integrated control interventions.

show abstract

“…Other herbicides have also been used to control barnyardgrass. Molinate, 8 a thiocarbamate that inhibits lipid synthesis; propanil, 9 an amide that inhibits photosynthesis at photosystem II; and quinclorac, 10 a carboxylic acid that acts as a synthetic auxin, have been extensively used to control barnyardgrass (Baltazar and Smith 1994;Ntanos et al 2000;Smith 1974). However, research has shown that these herbicides have little activity on creeping rivergrass (Griffin et al 2004;Lassiter et al 2002).…”

mentioning

confidence: 99%

Herbicide Programs for Managing Creeping Rivergrass (Echinochloa Polystachya) in Rice

Webster¹,

Griffin²,

Blouin³

2007

Weed Technology

View full text Add to dashboard Cite

A study was established to evaluate herbicides registered for barnyardgrass control in rice for activity on creeping rivergrass. Treatments included 208 g ai/ha cyhalofop early POST (EPOST) followed by (fb) 315 g/ha cyhalofop late POST (LPOST), 22 g ai/ha bispyribac EPOST fb 22 g/ha bispyribac LPOST, 66 g ai/ha fenoxaprop EPOST fb 86 g/ha fenoxaprop LPOST, 70 g ai/ha imazethapyr EPOST fb 70 g/ha imazethapyr LPOST and 50 g ai/ha penoxsulam mid-POST (MPOST). Each POST program was evaluated with and without 448 g ai/ha clomazone PRE. Barnyardgrass control, averaged over days after treatment (DAT), was 88 to 92% with the addition of clomazone PRE. Clomazone applied PRE followed by two applications of cyhalofop controlled creeping rivergrass at 91%. Creeping rivergrass control was less than 75% at 35 to 49 DAT. This response indicates only suppression of creeping rivergrass is achieved with the herbicide programs evaluated in this study.

show abstract

Propanil and Adjuvants for Barnyardgrass Control in Rice

Cited by 3 publications

References 15 publications

Effect of Adjuvants on Weed Control and Soybean (Glycine max) Tolerance with AC 263,222

Effect of Adjuvants on Weed Control and Soybean (Glycine max) Tolerance with AC 263,222

Echinochloa in mid-southern U.S. and California rice: What is known and what are the knowledge gaps?

Herbicide Programs for Managing Creeping Rivergrass (Echinochloa Polystachya) in Rice

Contact Info

Product

Resources

About