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Influence of Herbicide Carrier on the Tolerance of White Bean to Preplant Incorporated and Preemergence Herbicides  [PDF]
Nader Soltani, Christy Shropshire, Peter H. Sikkema
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.71007
Abstract: Nine field trials (five with PPI and four with PRE herbicides) were conducted at Exeter and Ridgetown, Ontario during 2013 to 2015 to determine if the tolerance of white bean to preplant incorporated (PPI) and preemergence (PRE) herbicides is influenced by the herbicide carrier (water vs. UAN at 200 L•ha-1). There was no significant interaction between the carrier and herbicide for visible injury, plant stand, plant height, shoot dry weight, seed moisture content and yield. There was also no significant difference between the herbicide carriers for all parameters measured except for the shoot dry weight which was 6.5% greater when UAN was used as the carrier with PPI herbicides. Dimethenamid-p, pendimethalin, imazethapyr and halosulfuron applied PPI or PRE caused no visible injury except for imazethapyr PPI which caused 2% visible injury and dimethenamid-p PRE which caused 7% - 14% injury in white bean. There was no effect of the PPI and PRE herbicides evaluated on white bean stand, shoot dry weight, height, maturity and yield. Based on these results, using water or UAN could be used as the carrier for PPI and PRE herbicides in white bean.
Weed Control with Halosulfuron Applied Preplant Incorporated, Preemergence or Postemergence in White Bean  [PDF]
Nader Soltani, Robert E. Nurse, Christy Shropshire, Peter H. Sikkema
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.510094
Abstract:

Four field trials were conducted over a three-year period (2011-2013) at various locations in Ontario to evaluate the level of weed control provided by halosulfuron applied PPI,PREor POST at 17.5, 35 and 70 g·ai·ha-1 in white bean. Halosulfuron applied PPI or PRE at 17.5, 35 and 35 g·ai·ha-1 caused 2% or less visible injury 1 and 4 WAA in white bean. However, halosulfuron applied POST at 17.5, 35 and 70 g·ai·ha-1

Weed Control in White Bean with Various Halosulfuron Tankmixes  [PDF]
Nader Soltani,Robert E. Nurse,Christy Shropshire,Peter H. Sikkema
Advances in Agriculture , 2014, DOI: 10.1155/2014/391634
Abstract: Four field trials were conducted over a three-year period (2011–2013) in southwestern Ontario to evaluate the level of weed control provided by various halosulfuron tankmixes applied preplant incorporated (PPI) in white bean. Trifluralin, s-metolachlor, halosulfuron, and imazethapyr applied alone or in combination caused 4% or less visible injury 1 and 4 weeks after emergence (WAE) in white bean. Trifluralin, s-metolachlor, halosulfuron, and imazethapyr applied PPI provided 80–96%, 84–95%, 83–100%, and 75–92% control of redroot pigweed; 19–28%, 30–40%, 97–99%, and 73–84% control of common ragweed; 94–96%, 63–82%, 96–100%, and 96–100% control of common lambsquarters; 14-15%, 12–35%, 100%, and 96–97% control of wild mustard; and 96–97%, 95–97%, 53–56%, and 80–82% control of green foxtail, respectively. The two- and three-way tankmixes of halosulfuron with trifluralin, s-metolachlor, or imazethapyr provided 85–100% control of redroot pigweed, 90–98% control of common ragweed, 97–100% control of common lambsquarters, 100% control of wild mustard, and 93–98% control of green foxtail. Weed density, weed biomass and white bean seed yields reflected the level of visible weed control. 1. Introduction Ontario is one of the main regions for the production of white (navy) bean (Phaseolus vulgaris L.) in North America. In 2012, white bean growers in Ontario planted 28,000 hectares and produced 68,000 MT of white bean with a farm-gate value of approximately $38 million [1]. White bean has short physical stature and therefore is more vulnerable to weed interference and subsequent yield losses if weeds are not adequately controlled [2–6]. Yield losses of 59% have been attributed to weed interference in dry beans in Ontario which is substantially greater than other field crops such as winter wheat (3%), spring cereals (12%), soybean (38%), and corn (52%) [7]. There is only one registered soil applied broadleaf herbicide, imazethapyr, for weed control in white bean in Ontario. Imazethapyr provides only marginal control of common lambsquarters (Chenopodium album L.) and common ragweed (Ambrosia artemesiifolia L.) and has a narrow margin of crop safety in dry bean [2, 6]. More research is needed to identify new herbicide options for annual broadleaf weed management in white bean. Halosulfuron is a newly registered sulfonylurea herbicide that controls redroot pigweed (Amaranthus retroflexus L.), common lambsquarters, common ragweed, wild mustard (Sinapis arvensis L.), nutsedge species (Cyperus spp.), ladysthumb (Polygonum persicaria L.), velvetleaf (Abutilon theophrasti
Response of Soybean to Halosulfuron Herbicide  [PDF]
V. K. Nandula,D. H. Poston,K. N. Reddy,K. Whiting
International Journal of Agronomy , 2009, DOI: 10.1155/2009/754510
Abstract: Recently, halosulfuron injury in soybean through off-target movement of halosulfuron when applied to rice fields has been reported. Sulfonylurea-tolerant (ST) soybean varieties have enhanced tolerance for sulfonylurea herbicides and might provide an option for mitigating injury to soybean from halosulfuron drift. Experiments were conducted to evaluate the effect of halosulfuron on growth and yield of selected soybean varieties with ST trait alone and stacked with glyphosate resistance trait. Soybean plants were treated with halosulfuron at 0, 0.0043, 0.0087, 0.017, 0.034, and 0.069 kg ai/ha rate at the V3 growth stage in the greenhouse and at 0.034 kg/ha rate (labeled use rate in rice) in the field studies. All soybean varieties containing the ST trait exhibited some halosulfuron injury, but survived the halosulfuron application in the greenhouse. In field studies, a single POST application of halosulfuron at 0.034 kg/ha to soybean at three-trifoliolate leaf stage or at full bloom stage resulted in halosulfuron injury to a certain extent regardless of ST trait. Halosulfuron did not have a significant effect on yield of ST varieties compared to their respective nontreated controls. Severe halosulfuron injury in two non-ST varieties resulted in yield loss.
TOLERANCIA DEL TOMATE (Lycopersicon esculentum Mill.) A APLICACIONES POST TRASPLANTE DEL HERBICIDA HALOSULFURON-METIL Tomato (Lycopersicon esculentum Mill.) tolerance to post transplant applications of the herbicide halosulfuron-methyl  [cached]
Juan Orme?o N.,Francisco Fuentes V.,Verónica Soffia C.
Agricultura Técnica , 2003,
Abstract: Durante la temporada 1998/99 en el Centro Regional de Investigación La Platina del Instituto de Investigaciones Agropecuarias (INIA) (33o34’ lat. Sur, 70o38’ long. Oeste, 625 m.s.n.m.), en un suelo franco-arcilloso, se realizaron ensayos para determinar la tolerancia de tomate (Lycopersicon esculentum Mill.) de los cultivares industriales H-993, P-76, APT-127, APT-410 y cultivares de consumo fresco Cal Ace y XPH-12221 a aplicaciones de post trasplante de halosulfurón-metil (Sempra 75 WG) en la dosis recomendada 75 g ha-1 y en sobredosis de 150 y 300 g ha-1. En todas las dosis halosulfurón-metil no produjo síntomas adversos importantes sobre el follaje. Los mayores niveles de decoloración foliar se observaron en la sobredosis 300 g ha-1 en el cv. P-76 siete días después de la aplicación (DDA). Esta fitotoxicidad fue temporal, restringida a 7-15 DDA, desapareciendo casi completamente 21 DDA. No hubo reducciones en alto y ancho de las plantas 30 DDA, a excepción del ancho del cv. P-76 a 300 g ha-1. 0El rendimiento individual y total de frutos en los cvs. Cal Ace, XPH-12221, H-993, APT-127 y APT-410 no fueron afectados por las aplicaciones de halosulfurón-metil. Ninguna dosis produjo efectos adversos en el diámetro ecuatorial y polar de los frutos. El híbrido industrial P-76 tuvo una baja significativa en rendimiento y número de frutos planta-1 a 150 y 300 g ha-1, pero no con la dosis de 75 g ha-1. Las plantas de tomate fueron tolerantes a aplicaciones tempranas de post trasplante en la dosis máxima recomendada de halosulfurón-metil. During the 1998/99 season at La Platina Research Regional Center of the National Agricultural Research Institute (INIA) (33o34’ S lat, 70o38’ W long, altitude 625 m.o.s.l.), on a loamy-clay soil, field trials were conducted to determine crop tolerance of tomatoes (Lycopersicon esculentum Mill.) of the industrial cultivars H-993, P-76, APT-127, APT-410, and fresh consumption cultivars Cal Ace, and XPH-12221, to post transplant applications of halosulfuron-methyl (Sempra 75 WG) at the recommended rate 75 g ha-1 and at an overdose of 150 and 300 g ha-1. At all of the doses halosulfuron-methyl did not produce any significant adverse effects on the foliage. The greatest levels of foliar discoloration were observed on cv. P-76 at 300 g ha-1 seven days after treatment (DDA). This phytotoxicity was temporary, restricted to 7-15 DDA, disappearing almost completely at 21 DDA. There was no reduction in plant height and width to 30 DDA, except the width of cv. P-76 treated at 300 g ha-1. Single plant and total tomato yield of the varieti
Conclusion on the peer review of the pesticide risk assessment of the active substance halosulfuron (evaluated variant halosulfuron-methyl)
European Food Safety Authority
EFSA Journal , 2012, DOI: 10.2903/j.efsa.2012.2987
Abstract: The conclusions of the European Food Safety Authority (EFSA) following the peer review of the initial risk assessments carried out by the competent authority of the rapporteur Member State Italy, for the pesticide active substance halosulfuron (evaluated variant halosulfuron-methyl) are reported. The context of the peer review was that required by Commission Regulation (EU) No 188/2011. The conclusions were reached on the basis of the evaluation of the representative use of halosulfuron-methyl as a herbicide on rice. The reliable endpoints concluded as being appropriate for use in regulatory risk assessment, derived from the available studies and literature in the dossier peer reviewed, are presented. Missing information identified as being required by the regulatory framework is listed. Concerns are identified.
Evaluación de la eficacia del herbicida halosulfuron metil sólo y en mezcla con acetocloro en el control de malezas en Pimentón Capsicum annuum L. en la planicie de Maracaibo, estado Zulia, Venezuela1 Efficacy evaluation of the herbicide halosulfuron methyl alone and mixed with acetochloro in weed control in sweet Pepper Capsicum annum L. in the Maracaibo Plain, Zulia state, Venezuela
W. Gutiérrez,C. Medrano,J. L. Báez,H. Pinto
Revista de la Facultad de Agronomía , 2002,
Abstract: En la Granja "Ana María Campos", de la Facultad de Agronomía de La Universidad del Zulia, se realizó un ensayo para evaluar la eficiencia del herbicida halosulfuron metil sólo o en combinación con el herbicida acetocloro para el control de malezas en el cultivo de pimentón Capsicum annuum L. La zona corresponde a un bosque muy seco tropical, con suelo franco arenoso. El dise o experimental fue un bloques al azar con 8 tratamientos: halosulfuron metil a las dosis de 125, 100 y 75 g i.a/ha, halosulfuron metil 100 g i.a/ha + acetocloro 13,5 g i.a/ha y halosulfuron metil 75 g i.a/ha + acetocloro 13,5 y 18,0 g i.a/ha, además de testigo limpio y uno enmalezado y 4 repeticiones. La unidad experimental fue una parcela de 3 hilos de 5 m de largo y 0,6 m de separación. El análisis estadístico no mostró diferencias significativas para la variables grado de toxicidad. El herbicida halosulfuron metil a las dosis de 75, 100 y 125 g i.a/ha no causó da o al pimentón en aplicación una semana postransplante. Para la variable control de malezas (PCM) en función del peso de las malezas se detectaron diferencias altamente significativas entre los tratamientos (P<0,01) a las 7 semanas después de las aplicaciones. El mejor resultado para la variable PCM se obtuvo con el tratamiento de 2 limpias. El herbicida halosulfuron metil presentó a los 15 días después de la aplicación (DDA) control de malezas superiores al 90%, sin embargo a los 30 y 45 DDA los porcentajes de control de malezas bajaron a 73% y 64% respectivamente. El herbicida en mezcla con acetocloro mostró mayor efectividad en el control de malezas en todas las dosis ensayadas, aunque no se detectaron diferencias significativas entre las diferentes dosis (P<0,05). Con relación al peso fresco de la planta también se observaron diferencias significativas entre los tratamientos con el herbicida y el testigo limpio. This study was carried out at the Zulia University experimental farm "Ana Maria Campos". The area belongs to a very dry tropical forest region with sandy loam soil. Te objective was to evaluate the efficacy of the herbicide halosulfuron methyl alone and mixed with acetochloro on weed control in sweet pepper Capsicum annum L. The experimental design was a randomized block with 8 treatments: halosulfuron metil125, 100 and 75 g a.i Ha-1, halosulfuron methyl100 g a.i Ha-1+ acetochloro 13,5 g a.i Ha-1 and halosulfuron methyl 75 g a.i Ha-1 + acetochloro 13,5 and 18,0 g a.i Ha-1 including a weeded and un-weeded control and 4 replications. The experimental unit was a plot with 3 rows of 5 m long and 0,6 m between rows.
Weed Control and Peanut Tolerance with Ethalfluralin-Based Herbicide Systems  [PDF]
W. J. Grichar,P. A. Dotray
International Journal of Agronomy , 2012, DOI: 10.1155/2012/597434
Abstract: Field studies were conducted from 2007 through 2009 to determine weed efficacy and peanut (Arachis hypogaea L.) response to herbicide systems that included ethalfluralin applied preplant incorporated. Control of devil's claw (Proboscidea louisianica (Mill.) Thellung), yellow nutsedge (Cyperus esculentus L.), Palmer amaranth (Amaranthus palmeri S. Wats.), and puncturevine (Tribulus terrestris L.) was most consistent with ethalfluralin followed by either imazapic or imazethapyr applied postemergence. Peanut stunting was 19% when paraquat alone was applied early-postemergence. Stunting increased to greater than 30% when ethalfluralin applied preplant incorporated was followed by S-metolachlor applied preemergence and paraquat applied early-postemergence. Stunting (7%) was also observed when ethalfluralin was followed by flumioxazin plus S-metolachlor applied preemergence with lactofen applied mid-postemergence. Ethalfluralin followed by paraquat applied early-postemergence reduced peanut yield when compared to the nontreated check. Ethalfluralin applied preplant incorporated followed by imazapic applied mid-postemergence provided the greatest yield (6220?kg/ha). None of the herbicide treatments reduced peanut grade (sound mature kernels plus sound splits) when compared with the nontreated check. 1. Introduction Peanut has several unique features that contribute to challenging weed management. Peanut cultivars grown in the United States require a fairly long growing season (140 to 160?d), depending on cultivar and geographical region [1, 2]. Consequently, soil-applied herbicides may not provide season-long control, and mid-to-late season weed pressure may occur. Peanut has a prostrate growth habit, a relatively shallow canopy, and is slow to shade interrows allowing weeds to be more competitive [2, 3]. Additionally, peanut fruit develops underground on pegs originating from branches that grow along the soil surface. This prostrate growth habit and pattern of fruit development restricts cultivation to an early-season control option [2, 4]. With conventional row spacing (91 to 102?cm), complete ground cover may not be attained until 8 to 10?wk after planting. In some areas of the U.S. peanut growing region, complete canopy closure may never occur. Weeds compete with peanut for sunlight, moisture, and nutrients and may reduce harvesting efficiency. Weeds are particularly troublesome during digging and inverting procedures [5]. Weed biomass slows field-drying of peanut vines and pods and increases the likelihood of exposure to rainfall, which may increase
Efeito do estresse hídrico sobre a eficiência do halosulfuron no controle de tiririca
Machado, Ricardo A.;Costa, Augusto G. F.;Alves, Pedro Luís C. A.;Kawaguchi, Ibene T.;
Planta Daninha , 2000, DOI: 10.1590/S0100-83582000000200008
Abstract: a grennhouse experiment was carried out to evaluate the effect of 10 days water stress (yw values of 32.6; -2.2 -0.35, and -0.2 mpa) on the efficacy of pos-emergent application of halosulfuron (150g c.p./ha+aterbane 0.25% v/v) in the control of purple nutsedge. when the suitable water supplying began in a period of 24 hours after the herbicide spraying, halosulfuron gave an excellent control of purple nutsedge under every water stress conditions. when the suitable irrigation conditions began 48 hours after herbicide spraying, there was a lower halosulfuron efficacy. when the stress was lower than -2.0 mpa, the herbicide gave a good control, mainly in the yw of -0.35 mpa.
Seletividade do halosulfuron isolado ou em mistura com glyphosate para culturas anuais
Souza, L.S.;Martins, D.;Camposilvan, D.;Velini, E.D.;Palma, V.;
Planta Daninha , 2001, DOI: 10.1590/S0100-83582001000300007
Abstract: the objective of this research was to evaluate the selectivity of halosulfuron alone and in mixture with glyphosate sprayed on pre and post emergence on summer crops soybean, corn, bean, cotton and for winter crops black oats, ryegrass, rye, wheat and x triticosacale. two experiments were carried out at experimental station and s?o manuel - unesp - botucatu-sp - brazil. the treatments consisted of halosulfuron herbicide (100/150 g ha-1 ) on pre and post emergence application, and in tank mix of halosulfuron+glyphosate na and wg (100+4000 g ha1) respectively on pre emergence application and in different timings: 2, 15 and 30 days before and 15 and 30 days after crop seeding . the phytotoxicity in soybean, corn, bean, cotton and ryegrass plants was due to application of halosulfuron which has been related to rates, seasons and mode of application . the higher the rates of halosulfuron application to post emergence of the crops, the higher was the injury found in the plants. all treatments did not injured oat, rye, wheat and x triticosecale plants.
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