Response of Several Weed Species to Low Volume Glyphosate Application Methods

Various low volume applicators were evaluated for controlling several perennial weed species in Hawaii. White thunbergia (Thunbergia fragrans Roxb.), purple nutsedge (Cyperus rotundus L.), guava (Psidium guajava L.) and guineagrass (Panicum maximum Jacq.) were the weed species used. The wiper applicator (10% and 25% v/v) provided the best overall weed control. The Magicwand (5% and 10% v/v) and the brush applicator (5% and 10% v/v) provided similar control to that of the conventional application method (1% and 2% v/v). The failure of the Magicwand and brush applicator to provide better control of purple nutsedge and thunbergia than the conventional method was probably due to inadequate herbicide coverage. Guava was the most tolerant weed species; none of the plants were killed. Glyphosate at rates of 0, 0.5, 1.0, 2.0 and 4.0 kg a.e./ha was applied in diluent volumes of 45, 90, 180 and 560 L/ha by the conventional method to the weed species listed above. Decreasing the diluent volume (360 L/ha to 45 L/ha) of a given glyphosate rate (usually the lower rates) caused an increase in glyphosate activity. Again, guava was the most tolerant of the 4 weed species. A study was conducted to determine the effect of glyphosate (MON-0139; 0, 1, 2, 4% w/w) and surfactant (MON-0818; O, 0.1, 1, 10% w/w) concentrations applied in different drop numbers to a specified leaf pair of thunbergia and guava. For thunbergia, the experiment showed that 1-1 uL drop of a 4% w/w glyphosate solution was more effective in reducing shoot fresh weight than 4-1 uL drops of a 1% w/w glyphosate solution, but this was not reflected in regrowth shoot fresh weight. Addition of surfactant also enhanced glyphosate activity, but glyphosate concentration in the drop was the more important limiting factor. With guava, only visual ratings showed a result comparable to that of thunbergia. Other parameters did not reflect any trends. This was probably due to the high degree of tolerance of guava to glyphosate

Major basil pests in Hawaii: Three economically important basil pests as of 2012

This is a guide for the identification and recommended control practices of the basil pests: tomato spotted wilt, downy mildew, and Madeira mealybug

2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales.

Correction to: 2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales. Archives of Virology (2021) 166:3567–3579. https://doi.org/10.1007/s00705-021-05266-wIn March 2021, following the annual International Committee on Taxonomy of Viruses (ICTV) ratification vote on newly proposed taxa, the phylum Negarnaviricota was amended and emended. The phylum was expanded by four families (Aliusviridae, Crepuscuviridae, Myriaviridae, and Natareviridae), three subfamilies (Alpharhabdovirinae, Betarhabdovirinae, and Gammarhabdovirinae), 42 genera, and 200 species. Thirty-nine species were renamed and/or moved and seven species were abolished. This article presents the updated taxonomy of Negarnaviricota as now accepted by the ICTV.This work was supported in part through Laulima Government Solutions, LLC prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272201800013C. J.H.K. performed this work as an employee of Tunnell Government Services (TGS), a subcontractor of Laulima Government Solutions, LLC under Contract No. HHSN272201800013C. This work was also supported in part with federal funds from the National Cancer Institute (NCI), National Institutes of Health (NIH), under Contract No. 75N91019D00024, Task Order No. 75N91019F00130 to I.C., who was supported by the Clinical Monitoring Research Program Directorate, Frederick National Lab for Cancer Research. This work was also funded in part by Contract No. HSHQDC-15-C-00064 awarded by DHS S&T for the management and operation of The National Biodefense Analysis and Countermeasures Center, a federally funded research and development center operated by the Battelle National Biodefense Institute (V.W.); and NIH contract HHSN272201000040I/HHSN27200004/D04 and grant R24AI120942 (N.V., R.B.T.). S.S. acknowledges partial support from the Special Research Initiative of Mississippi Agricultural and Forestry Experiment Station (MAFES), Mississippi State University, and the National Institute of Food and Agriculture, US Department of Agriculture, Hatch Project 1021494. Part of this work was supported by the Francis Crick Institute which receives its core funding from Cancer Research UK (FC001030), the UK Medical Research Council (FC001030), and the Wellcome Trust (FC001030).S

2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales.

In March 2021, following the annual International Committee on Taxonomy of Viruses (ICTV) ratification vote on newly proposed taxa, the phylum Negarnaviricota was amended and emended. The phylum was expanded by four families (Aliusviridae, Crepuscuviridae, Myriaviridae, and Natareviridae), three subfamilies (Alpharhabdovirinae, Betarhabdovirinae, and Gammarhabdovirinae), 42 genera, and 200 species. Thirty-nine species were renamed and/or moved and seven species were abolished. This article presents the updated taxonomy of Negarnaviricota as now accepted by the ICTV

Pesticides for Use in Papaya

Insecticides, herbicides, and fungicides labeled for use in papaya plantings in Hawaii at the time are listed, and the status of projects to register new pesticides is reviewed

Preliminary Field Tests on the Suitability of Amdro and Distance in Ant Bait Container for Control of the Big-Headed Ant, Pheidole megacephala (Hymenoptera: Formicidae)

Scientific note.Studies were conducted to (1) select a suitable brand of bait container for use in the control of big-headed ant in an agricultural situations, (2) determine the short-term effects environmental conditions on the potency of Amdro in a suitable bait container, and (3) to compare the effectiveness under field conditions of various spacings of bait containers using Distance and Amdro in sequence. Perimeter Patrol System bait container was selected as the most suitable for field use based on the capacity to contain sufficient amounts of Amdro, lower cost, smaller size, low profile shape, and ease of handling. Potency of Amdro was retained in the Perimeter Patrol System container for a period of twelve weeks. Bait containers spaced at 15.24 m apart in a field plot had the best control compared with 7.62 and 30.48 m spacings

Differentiation and Distribution of Cordyline Viruses 1–4 in Hawaiian ti Plants (Cordyline fruticosa L.)

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Major Basil Pests in Hawaii: Three Economically Important Basil Pests as of 2012 (Chinese translation)

This is a guide for the identification and recommended control practices of the basil pests: tomato spotted wilt, downy mildew, and Madeira mealybug