Effects of weed management practices on orchard soil biological and fertility properties in southeastern China

Yang, Yi-Song; Wang, Han; Tang, Jianjun; Chen, Xin

doi:10.1016/j.still.2006.04.001

Cited by 24 publications

(20 citation statements)

References 35 publications

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“…The application of any xenobiotic on soil can change the structure of a microbial community (Johnsen et al, 2001) and the magnitude of this influence depends both on soil properties as well as on specific characteristics of the microorganisms and the product applied (Vischetti et al, 2002;Yang et al, 2007). Microbial population may decrease (Macur et al, 2007), increase (Moreno et al, 2007) or even remain unaltered (Lupwayi et al, 2007) in response to an application of a herbicide.…”

Section: Resultsmentioning

confidence: 99%

Imidazolinone Degradation in Soil in Response to Application History

et al. 2015

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-Accelerated herbicide degradation consists in its faster degradation in areas where it has been previously applied, due to the adaptation of microbial population to that particular compound. Accelerated degradation can reduce herbicide persistence and reduce its efficacy in soil. The objective of this study was to investigate if imidazolinone herbicides have enhanced microbial degradation in rice paddy soils. A laboratory experiment was conducted, evaluating the CO 2 evolution rate from soils with and without history of herbicide application (imazapyr + imazapic and imazethapyr + imazapic), incubated with imidazolinone herbicides: imazethapyr, imazapyr, imazapic, imazamethabenz, imazamox and an untreated check. The amount of CO 2 released from the soil was measured. As a result, the prior application of imidazolinones does not stimulate microbial degradation of herbicides from the same chemical group.Keywords: residual effect, herbicide, microbial activity, Oryza sativa. RESUMO -A degradação acelerada consiste na rápida dissipação de um herbicida, sendo decorrente da adaptação da população microbiana do solo ao composto, o qual pode ser utilizado como fonte de carbono, energia e/ou nutrientes. Diversos herbicidas têm sua degradação estimulada quando aplicados em áreas com histórico de aplicação de produtos idênticos e/ou semelhantes. O objetivo deste trabalho foi verificar a degradação de imidazolinonas em solos com e sem histórico de aplicação das misturas formuladas imazethapyr + imazapic e imazapyr + imazapic. Para isso

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Section: Resultsmentioning

confidence: 99%

Imidazolinone Degradation in Soil in Response to Application History

et al. 2015

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“…H: homogeneous; ** significant at 1 % probability level; * significant at 5 % probability level; ns: not significant Table 3. Comparison of the load bearing capacity models for homogeneity of a Dystroferric Red-Latosol at 0-3 cm depth under native forest and in a coffee plantation submitted to different weed management systems According to Yang et al (2007) the weed control in an orchard citrus by mowing three times during the growing season could improve soil and mitigate negative effects of weeds on crops. In the study by Zhang et al (2006), it was observed that the first three passes of the tractor caused the largest increments in the mechanical resistance of the soil in the first 12cm depth.…”

Section: Influence Of Weed Management System On Soil Load Bearing Capmentioning

confidence: 99%

“…Weed plants utilized as cover crops residues can be left on the soil surface similar to a cereal stubble mulch to protect against evaporations and erosion (Hillel, 1980;Faria et al, 1998). In a newly developed orchard, Yang et al (2007) observed that the application of herbicides and tillage favored soil erosion. Yang et al (2007) pointed out that chemical and mechanical methods are the dominant weed control practices in many production systems due to its effectiveness, but noted on the other hand, that weed presence during the rainy season prevented soil erosion.…”

Section: Introducionmentioning

confidence: 99%

“…In a newly developed orchard, Yang et al (2007) observed that the application of herbicides and tillage favored soil erosion. Yang et al (2007) pointed out that chemical and mechanical methods are the dominant weed control practices in many production systems due to its effectiveness, but noted on the other hand, that weed presence during the rainy season prevented soil erosion. Studies conducted in tropical conditions showed that mechanical and chemical methods for weed control on coffee plantations had a great influence on the soil compaction state (Kurachi & Silveira, 1984;Alcântara & Ferreira, 2000b;Araujo-Junior et al, 2008, soil surface crust formation, erosion and coffee yield (Silveira et al, 1985;Alcântara & Ferreira, 2000a).…”

Section: Introducionmentioning

confidence: 99%

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Interrelationships Among Weed Management in Coffee Plantation and Soil Physical Quality

Araújo-Junior¹,

Dias²,

Alcântara³

et al. 2012

Weed Control

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“…Currently, the intensive use of herbicides for weed management is the most adopted practice in agriculture (Yang et al, 2007). Nowadays, glyphosate is the most important herbicide in the world, and it has been used for many years to control annual or perennial weeds, in many cropping systems (Faircloth et al, 2001;Blackshaw & Harker, 2002).…”

Section: Introductionmentioning

confidence: 99%

Monitoring the occurrence of glyphosate-resistant sourgrass biotypes in the south region of Minas Gerais, Brazil

Netto

Goveia

Carvalho³

2015

RBHerbicidas

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-This work was developed with the objective of monitoring the occurrence of glyphosate-resistant biotypes of sourgrass (D. insularis) in Machado, Alpinópolis, Serrania and Divisa Nova, in the south region of Minas Gerais, Brazil. In each area, seeds of at least 20 plants were collected in full physiological maturity stage. For operational reasons, the analysis of different biotypes was divided into two timings, the first held in the second half of 2013 and the second in the first half of 2014. Plants were treated in the 4-5 leaves stage / tillering (First timing) and preflowering (Second timing); with the following treatments (D = 720 g ha -1 a.e.): 4D, D, 1/4D, 1/16D, 1/64D and herbicide absence. The percentage of control was evaluated at 14 and 28 days after application (DAA) as well as the residual dry mass at 28 DAA. Twelve sourgrass biotypes were considered susceptible to glyphosate; glyphosate differential susceptibility was detected between sourgrass biotypes; different management measures must be adopted to reduce the pressure of selection and the worsening of the situation. Keywords: Digitaria insularis; dose response; management; prevention; resistance Resumo -Este trabalho foi desenvolvido com o objetivo de monitorar a ocorrência de biótipos de capim-amargoso (D. insularis) resistentes ao herbicida glyphosate em Machado, Alpinópolis, Serrania e Divisa Nova, na região de Sul de Minas Gerais, Brasil. Em cada área, foram coletadas sementes de, no mínimo, 20 plantas por biótipos, em estádio de plena maturidade fisiológica. Por questões operacionais, a análise dos diferentes biótipos foi dividida em duas fases, a primeira realizada no segundo semestre de 2013 e a segunda realizada no primeiro semestre de 2014. Foram realizadas pulverizações sobre plantas em estádio de 4-5 folhas / perfilhamento (Primeira Fase) e em pré-florescimento (Segunda Fase), com os seguintes tratamentos (D = 720 g ha -1 e.a.): 4D, D, 1/4D, 1/16D, 1/64D e ausência de herbicidas. Foi avaliado o controle percentual aos 14 e 28 dias após aplicação (DAA), bem como a massa seca residual aos 28 DAA. Os doze biótipos de capimamargoso testados foram considerados suscetíveis ao herbicida glyphosate. Detectou-se suscetibilidade diferencial entre os biótipos. Assim sendo, medidas de manejo diferentes devem ser adotadas para evitar o agravamento da situação.

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Effects of weed management practices on orchard soil biological and fertility properties in southeastern China

Cited by 24 publications

References 35 publications

Imidazolinone Degradation in Soil in Response to Application History

Imidazolinone Degradation in Soil in Response to Application History

Interrelationships Among Weed Management in Coffee Plantation and Soil Physical Quality

Monitoring the occurrence of glyphosate-resistant sourgrass biotypes in the south region of Minas Gerais, Brazil

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