Eucalyptus growth in silvopastoral system under different crown dia meters

Machado, Sílvia Rodrigues; Ferreira, Lino Roberto; Neto, Sílvio Nolasco de Oliveira; Moraes, Hugo Marcus Fialho e; Gonçalves, Valdinei Araújo; Felipe, R.S.

doi:10.1590/s0100-83582013000400011

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…The application of herbicides is necessary at various stages of a forest cycle, it consists of controlling invasive plants with the use of herbicides. This practice allows the crop of interest to grow without competition for water, light and nutrients (MACHADO et al, 2014).…”

Section: Application Technologymentioning

confidence: 99%

Study of the effects of increasing the boom of the coastal application pump of herbicide in ergonomics

Silva,

Murad,

Silva

2023

Cad. Pedagógico

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The forestry sector has been perfecting and developing techniques to improve its process. This is due to the great competitiveness of the market and the lack of labor. The objective of the work was to evaluate the effect of varying the length of the agrochemical application lance on ergonomics using the Rapid Upper Limb Assessment (RULA) methodology. This assessment relates the effect of the tool on different parts of the employee's body, and in this way it is possible to obtain a diagnosis through the postural assessment of the equipment during the activity. From this study it was possible to demonstrate that increasing the boom from 53 to 75 cm does not expose employees to negative effects in relation to posture. On the other hand, it was possible to highlight positive points arising from the change, such as productivity gains, less physical exhaustion and employee fatigue.

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Section: Application Technologymentioning

confidence: 99%

Study of the effects of increasing the boom of the coastal application pump of herbicide in ergonomics

Silva,

Murad,

Silva

2023

Cad. Pedagógico

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“…After testing crown diameters (weed free distance around plants), Machado et al (2013) concluded plants without crowning showed lower growth. Crown diameters about 2 m provided favorable conditions for initial growth of eucalypt seedlings.…”

Section: Negative Effects Of Weeds In Eucalyptmentioning

confidence: 99%

Herbicides for weed control in eucalypt

Pereira

Alves²

2015

RBHerbicidas

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-To ensure the maximum forestry productivity the adoption of efficient managements is essential. Weed control is very important, since presence of weeds can lead to competition for key factors to plant development. Weed interference can cause losses of up to 50 % in productivity and over 90 % of reduction in the profitability of forestry areas. Chemical control is widely used in weed management and about 30 % of the total costs of production and up to 50 % of the work force used in eucalypt crop cycle are intended for this purpose. Brazilian forestry sector has great economic expressiveness, but there are few herbicides registered. Chemical weed control should still fit the standards required by eucalypt certifications. The expansion of sector and the economic importance of this crop in Brazil make necessary the development of new herbicides and new spraying techniques to increase herbicides efficiency, new research, as well as encouraging adoption of an integrated weed management plan in eucalypt. Keywords: Eucalyptus; glyphosate; reforestation; weed competition; weed management Resumo -Para garantir a máxima produtividade florestal, a adoção de um manejo eficiente é essencial. O controle de plantas daninhas é muito importante, já que a presença dessas pode ocasionar competição por fatores fundamentais ao desenvolvimento das plantas. A interferência das plantas daninhas pode ocasionar perdas de até 50 % na produtividade e mais de 90 % de redução na rentabilidade das áreas florestais. O controle químico é amplamente utilizado no manejo das plantas daninhas, e cerca de 30 % dos custos totais de produção e mais de 50 % da mão-de-obra utilizada na cultura do eucalipto são destinadas para esse propósito. O setor florestal tem uma grande expressividade econômica, mas poucos herbicidas são registrados. O controle químico ainda deve se encaixar aos padrões requeridos pelas certificadoras. A expansão do setor e a importância econômica do eucalipto no Brasil fazem necessário o desenvolvimento de novos herbicidas, novas tecnologias de aplicação, novas pesquisas, bem como a adoção de um plano de manejo integrado de plantas daninhas em eucalipto.

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“…The choice of the tree species that will compose the ICLF system is characterized as a fundamental requirement in the adoption of this agricultural production model (Machado et al 2013). The eucalyptus cultivated in integrated production systems can be useful to several uses, however the commercial use as wood for sawmill, is the one that has been most used by producers, due to the greater nancial return (Oliveira et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Quantification of damage and initial growth of eucalyptus in integrated crop-livestock-forest systems in the Brazilian Cerrado

Barbosa

Leite

Oliveira

et al. 2021

Preprint

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Background The integrated crop-livestock-forest (ICLF) system is a sustainable production model composed by tree species intercropped with annual crops and forage species. The choice of the tree species that will compose the ICLF is characterized as a fundamental requirement in the adoption of the system. Therefore, this study aimed to analyze the initial growth and adaptation of two eucalyptus genotypes cultivated in ICLF systems in the Brazilian Cerrado. Methods The eucalyptus genotypes (E. cloeziana and E. urograndis) were intercropped with Sorghum bicolor and Urochloa brizantha in two ICLF systems in Minas Gerais State, Brazil. Qualitative data expressed by occurrences of damage and weaknesses, as well as quantitative data measured by survival rates, diameter at soil height, diameter at breast height, and total height of trees were evaluated in four periods. The data were analyzed by a correlation matrix and analysis of variance, and them qualitative and quantitative data to were analyzed in relation to the rainfall distribution during the studied period. Results The occurrence of Trigona spinipes and termite were the main biotic factors that caused damage and weaknesses to E. cloeziana and E. urograndis, respectively, directly impacting the initial growth and survival rate of eucalyptus.. The growth of E. urograndis was higher than E. cloeziana at 450, 630, 1020, and 1320 days after transplanting. On the other hand, E. cloeziana showed the highest survival rate (80.6%) while E. urograndis presented greater tolerance to the water stress. Conclusion The hibrid E. urograndis proved to be more adapted to edaphoclimatic conditions studied in the Cerrado region and can be indicated to ICLF systems implanted in regions characterized by high temperatures and irregular rainfall distribution.

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Eucalyptus growth in silvopastoral system under different crown dia meters

Cited by 8 publications

References 8 publications

Study of the effects of increasing the boom of the coastal application pump of herbicide in ergonomics

Study of the effects of increasing the boom of the coastal application pump of herbicide in ergonomics

Herbicides for weed control in eucalypt

Quantification of damage and initial growth of eucalyptus in integrated crop-livestock-forest systems in the Brazilian Cerrado

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