scholarly journals News Techniques for the Application of Herbicides on Soybean Crops

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
C.S. PEREIRA ◽  
C. LIMA ◽  
A.L. MEDEIROS ◽  
S.A.C.M. ARANTES ◽  
R.P. ASSIS ◽  
...  
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Herbicide Application ◽  
New Techniques ◽  
Mato Grosso ◽  
Weed Population ◽  
Commercial Area ◽  
Application Techniques ◽  
Glycine Max L ◽  
Free Growth

ABSTRACT: There is a need for an increase nin efficiency and a reduction in the risk of environmental contamination in controlling weeds; this can be obtained with the development of the new techniques for the application of herbicides. The objective was to verify the efficiency of different herbicide application techniques on soybean crops (Glycine max (L.) Merrill). The experiment was conducted in a commercial area in the municipality of Sinop, Mato Grosso state. The design was a randomized block, with four replications and six treatments, namely: herbicide application with a manual backpack sprayer; application with an acrylic wool roll with 9 mm long hairs; sheep’s wool roller with 9 mm long hairs; high density polyester foam roller; weeding with a hoe and free growth (no control). The used cultivar was TMG 132. The herbicide spray used in the treatments was: glyphosate 960 g ha-1, 80 g ha-1 haloxyfop-p-methyl 600 mL ha-1 and oil, diluted in water and applied 14 and 27 days after emergence (DAE). The weed population, vegetative growth, chlorophyll content and soybean yield were evaluated. The use of the sprayer and the application with the sheep’s wool roller showed greater efficiency in weed control, but the mixture of herbicides resulted in culture phytotoxicity when applied via foliar spraying.

Weed Control for Close-Drilled Soybeans

Weed Science ◽  
1972 ◽  
Vol 20 (1) ◽  
pp. 16-19 ◽  
Author(s):  
L. M. Wax
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Yield Reduction ◽  
Herbicide Application ◽  
Weed Species ◽  
Soybean Yield ◽  
Planting Time ◽  
Large Numbers ◽  
Seedbed Preparation

Delayed planting or “stale seedbed” for weed control in close-drilled (20-cm rows) soybeans [Glycine max(L.) Merr. ‘Amsoy’] was evaluated for 3 years. The system combined final seedbed preparation 3 to 6 weeks before planting with herbicide application at planting time. The best control of six weed species and highest soybean yields were obtained bya,a,a-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) application at the time of seedbed preparation followed by 3-(3,4-dichlorophenyl)-1-methylurea (linuron) application at planting and by linuron application at planting without the early trifluralin application. Applications of 1,1′-dimethyl-4,4′-bipyridinium ion (paraquat) at planting, either with or without trifluralin treatments, resulted in less weed control and lower soybean yields than comparable treatments with linuron. However, even the best treatments failed to provide the weed control necessary to prevent substantial soybean yield reduction in heavy infestations of weeds that emerge in large numbers after planting, and that resist the phytotoxic action of the herbicides.

Annual Weed Control by Glyphosate in Glyphosate-Resistant Soybean (Glycine max)

1999 ◽  
Vol 13 (2) ◽  
pp. 394-398 ◽  
Author(s):  
Comfort M. Ateh ◽  
Robert G. Harvey
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Herbicide Application ◽  
Soybean Yield ◽  
Common Lambsquarters ◽  
Giant Foxtail

Control of natural infestations of common lambsquarters and giant foxtail in 1993, 1994, and 1995 and of velvetleaf in 1994 and 1995 by postemergence application of glyphosate to glyphosate-resistant soybean planted in narrow (20 cm) and wide (76 cm) rows was evaluated. Planting glyphosate-resistant soybean in narrow rows and applying reduced rates of glyphosate when common lambsquarters, giant foxtail, and velvetleaf were at their actively growing stage 3 to 18 cm, 5 to 28 cm, and 3 to 20 cm tall, respectively, resulted in > 90% control. The effect of time of herbicide application was greater than the rate of herbicide application, especially within the wide-row soybean plantings. Applying imazethapyr in combination with glyphosate did not improve weed control or soybean yield compared with glyphosate alone.

Weed Control with Non-Selective Herbicides in Soybean (Glycine max) Stale Seedbed Culture

1994 ◽  
Vol 8 (1) ◽  
pp. 159-164 ◽  
Author(s):  
Andrew J. Lanie ◽  
James L. Griffin ◽  
P. Roy Vidrine ◽  
Daniel B. Reynolds
Keyword(s):  
Glycine Max ◽  
Weed Control ◽  
Soil Tillage ◽  
Herbicide Application ◽  
Soybean Yield ◽  
Hemp Sesbania ◽  
Prickly Sida ◽  
Control Post

Barnyardgrass and morningglory control POST with glufosinate at 840 g a.i./ha 28 d after treatment was 79 to 85% and 83 to 90%, respectively, when no more than 35 d elapsed between initial spring soil tillage and herbicide application. For the same rate of glufosinate, prickly sida and hemp sesbania were controlled 68 and 92%, respectively. Comparable barnyardgrass control was obtained with glufosinate at 560 and 840 g/ha, which was greater than at 420 g/ha. Hemp sesbania control was similar for all rates of glufosinate. In comparison, paraquat at 1050 g a.i./ha controlled 40 to 65% barnyardgrass, 44 to 75% morningglory, 41% prickly sida, and 92% hemp sesbania. With 840 g a.i./ha glyphosate and SC-0224, barnyardgrass, morningglory, prickly sida, and hemp sesbania were controlled 55 to 89%, 55 to 81%, 45 to 61%, and 56 to 68%, respectively. Soybean yield was 5.8, 7.6, 6.0, and 5.9 times greater than the nontreated check for 1050 g/ha paraquat and 840 g/ha glufosinate, glyphosate, and SC-0224, respectively.

scholarly journals Scaptocoris castanea (Perty, 1830) (Hemiptera, Cydinidae) em área produtora de Glycine max (L.) no município de Primavera do Leste, Mato Grosso

2013 ◽  
Vol 35 (84) ◽  
Author(s):  
Luís Felipe Cavalli Pessa ◽  
Edinalva Oliveira ◽  
Rodrigo Penna Nogueira
Keyword(s):  
Glycine Max ◽  
Mato Grosso ◽  
Glycine Max L

Uma população do percevejo-castanho-da-raiz foi estudada no município de Primavera do Leste, estado do Mato Grosso. As coletas foram realizadas de junho a outubro de 2005, em cinco estratos de profundidade: 10, 20, 30, 60 e 120 cm. Foram registrados 865 indivíduos; dentre estes, Scaptocoris castanea esteve presente em 621 exemplares. Essa população registrou basicamente dois estágios de desenvolvimento: ninfas (n = 303) e adultos (n = 318). As ninfas foram mais abundantes em julho e adultos em junho e outubro. Ninfas e adultos foram encontrados em todas as profundidades. Entretanto, uma maior concentração ocorreu entre 30 e 120 cm. Em relação aos adultos, 87 eram machos e 231 fêmeas. Houve uma relação positiva entre a abundância de S. castanea e a pluviosidade, porém a temperatura pareceu não influenciar a espécie no local.

scholarly journals PENGARUH ALELOPATI SERESAH DAUN BAMBU (Dendrocalamus asper) PADA PERKECAMBAHAN KEDELAI (Glycine max L. Merril)

2019 ◽  
Vol 6 (1) ◽  
pp. 16
Author(s):  
Lutfy Ditya Cahyanti
Keyword(s):  
Glycine Max ◽  
Sustainable Agriculture ◽  
Weed Control ◽  
Leaf Litter ◽  
Growth And Development ◽  
Control Techniques ◽  
Randomized Design ◽  
Sprout Length ◽  
Glycine Max L ◽  
Dendrocalamus Asper

<p><em>Weeds are an important factor in the decline of soybean  production. One of weed control techniques that can be done is to use alelopati as an bioherbicide. One source of allelopathy that can be utilized as bioherbicide is bamboo leaf litter. Problems arise if this alelopati also affect the pattern of germination cultivation plants because one of the main requirements of bioherbisida is not to affect the growth and development of crops. The purpose of this study was to determine whether leaf litter alelopathy would affect the germination of soybeans. The hypothesis this research is that bamboo leaf litter alelopathy will not affect the germination of soybean crops so it will be safe to use as a pre-plant bioherbicide. The treated treatment is without litter solution of bamboo leaf, and dosage of 5%, 10%, and 15% bamboo leaf litter solution. The design used was a complete non factorial randomized design with 5x replication. The conclusion of this research is the treatment of allelopathy given by application of bamboo leaf litter with various doses has no significant effect on the germination, sprout length, and germination time of soybean crop, so that bamboo leaf litter solution is safe to be used as bioherbicide on sustainable agriculture.</em></p>

scholarly journals ANÁLISES PARAMÉTRICAS E NÃO-PARAMÉTRICAS PARA DETERMINAÇÃO DA ADAPTABILIDADE E ESTABILIDADE DE GENÓTIPOS DE SOJA

2008 ◽  
Vol 9 (3) ◽  
pp. 299 ◽  
Author(s):  
Hélio Bandeira BARROS ◽  
Tuneo SEDIYAMA ◽  
Rita De Cássia TEIXEIRA ◽  
Cosme Damião CRUZ
Keyword(s):  
Glycine Max ◽  
Mato Grosso ◽  
Glycine Max L

Este trabalho teve o objetivo de avaliar a estabilidade e a adaptabilidade produtiva de 30 genótipos de soja [Glycine max (L.) Merrill], em seis ambientes no Estado do Mato Grosso. O delineamento experimental foi em blocos ao acaso, com quatro repetições. Os ensaios foram conduzidos no ano de 2004/05 nos municípios de Rondonópolis, Campo Verde, Nova Brasilândia e Vera. Para avaliação da adaptabilidade e estabilidade, utilizaram-se os métodos de Eberhart e Russell (1966), Lin e Binns (1988) modificado por Carneiro (1998), Annicchiarico (1992) e Centróide (Rocha et al., 2005). A produtividade média de grãos variou de 2.837 kg ha-1 (Rondonópolis III) a 3.701 kg ha-1 (Vera), com média geral entre os ambientes de 3.200 kg ha-1. Pela metodologia proposta por Eberhart e Russell, as linhagens SL 2238, SL 1949, SL 31, SL 2382 e os padrões Uirapuru e M-Soy 8411 apresentaram as maiores médias, ampla adaptabilidade (= 1) e significativos, ou seja, baixa estabilidade. Pelas metodologias de Lin e Binns, Annicchiarico e Centróide, as linhagens SL 2238, SL 712, SL 1949 e a cultivar Uirapuru foram classificadas como as mais produtivas, adaptadas e estáveis, havendo, portanto, coerência entre tais metodologias. Com base nas metodologias de Lin e Binns (1988), Annicchiarico (1992) e Centróide (Rocha et al. 2005), as linhagens SL 2238, SL 1949 e SL 712 apresentaram superioridade em termos de adaptabilidade, estabilidade e desempenho para a produtividade de grãos.

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