Variabilidade espacial da planta daninha azevém em cultivo de trigo utilizando diferentes malhas amostrais

Pott, Luan Pierre; Amado, Telmo Jorge Carneiro; Kruse, Nelson Diehl; Amaral, Lúcio de Paula; Reimche, Geovane Boschmann; Teixeira, Tiago de Gregori; Preuss, Darlan

doi:10.17058/tecnolog.v23i2.13299

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Após as análises preliminares, foi realizada a interpolação dos valores nas posições não amostradas, por meio do método do inverso do quadrado da distância que, como mencionado por Pott et al (2019), quando comparado com a Krigagem ordinária, não apresenta diferenças significativas, através da análise dos erros da estimativa.…”

Section: Metodologiaunclassified

Variabilidade espacial de plantas daninhas em área de plantio direto no município de Nova Andradina-MS

Ferreira¹,

Miskiw²,

Suszek³

et al. 2023

Braz. J. Anim. Environ. Res.

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O conhecimento da variabilidade espacial de uma área possibilita o desenvolvimento de um manejo localizado, fazendo assim com que o produtor tenha uma economia e eficiência na hora da aplicação de insumos. Desta maneira, ao surgir resultados econômicos, por consequência vem a adoção de boas práticas de aplicação, resultando em uma quantidade menor de moléculas químicas que são depositadas ao meio ambiente. O trabalho tem como objetivo mapear a variabilidade espacial de plantas daninhas em uma área experimental de plantio direto no município de Nova Andradina Mato Grosso do Sul, georreferenciada e subdividida em 48 pontos amostrais. Para efetuar a coleta das plantas daninhas utilizou-se um quadro com área de 0,25 m², sendo lançado ao solo 4 vezes consecutivas, dentro de um mesmo ponto amostral, somando desta maneira 1 m². Os valores dos atributos massa fresca e seca de folhas largas e estreitas foram realizadas a partir de amostragens georreferenciadas e os mapas temáticos dos atributos gerados utilizando o inverso do quadrado da distância (IQD). Foi possível também realizar teores de massa seca e úmida de plantas invasoras, folha larga e folha estreita que estavam presentes na área. As plantas daninhas de folhas largas, quanto as plantas daninhas de folhas estreitas apresentaram uma variabilidade definida na área, fazendo com que efetua-se um bom mapeamento, desta forma representando que com um bom processo de mapeamento e uma boa análise do mesmo, além de conhecer a área de cultivo o produtor consegue alcançar ganhos em produtividade e também em economia na hora da compra e aplicação de insumos na lavoura.

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Section: Metodologiaunclassified

Variabilidade espacial de plantas daninhas em área de plantio direto no município de Nova Andradina-MS

Ferreira¹,

Miskiw²,

Suszek³

et al. 2023

Braz. J. Anim. Environ. Res.

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“…Although it showed significant results in terms of herbicide savings, manual mapping is a time-consuming and tedious task that limits its application on a large scale. In addition, subsequent research showed that the spatial distribution of weeds was highly dependent on the sample density employed, the cultivation system, and the plant species studied [99,100].…”

Section: Phytosanitary Managementmentioning

confidence: 99%

Precision Agriculture in Brazil: The Trajectory of 25 Years of Scientific Research

et al. 2022

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Precision agriculture (PA) stands out as an innovative way to manage production resources, increasing the efficiency and the socioeconomic and environmental sustainability of agricultural systems. In Brazil, the principles and tools of PA started to be adopted in the late 1990s. To reveal the scientific trajectory and advances in PA taken over the past 25 years in Brazil, we conducted a comprehensive and systematic literature review. After searching for available peer-reviewed literature, 442 publications were selected to compose the database. Our bibliometric review showed that the scientific PA network is growing in Brazil, with the number and quality of publications, the number of interactions among research groups, and the number of international collaborations increasing. Soil and plant management are the two main pillars of PA research (~61% of the publications). More recently, research has evolved to include other areas, such as the use of proximal sensors to monitor soil and crop development, remote sensing using images from satellites and remotely piloted aircraft systems, and the development of decision support tools. A substantial part of Brazilian PA research is marked by the evaluation and adaptation of imported technologies, a scenario that is slowly changing with the growth of well-trained human resources and advances in national industry. Based on Brazilian scientific history and remaining challenges, the key potential areas for future research are (i) the development of digitally based decision support systems, i.e., a shift of focus from on-farm data technologies towards effective, site-specific decision making based on digital data and improved analytics; (ii) on-farm precision experimentation to underpin on-farm data collection and the development of new decision tools; and (iii) novel machine learning approaches to promote the implementation of digitally based decision support systems.

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Weed management in Roundup Ready® corn and soybean in Southern Brazil: survey of consultants’ perception

Holkem¹,

Silva²,

Bianchi³

et al. 2022

Advances in Weed Science

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Background:The presence of weeds in Roundup Ready ® (RR) soybean and corn crops compromises yield. Management practices recommended by the consultants and adopted by producers directly interfere in the occurrence of these species. Objective: To survey management practices used in RR soybean and corn fields in the Rio Grande do Sul. Methods: Data were gathered via the application of questionnaires during the 2018/19 growing season to consultants working with RR soybean and corn cropping in Rio Grande do Sul state. There were 112 responses, covering about 72 municipalities in the state. Results: Technical consultants highlighted Conyza spp. and Lolium multiflorum as the most common weed species and classified resistance to herbicides and advanced stages of weeds at the time of herbicide application as the primary causes of low weed control efficacy. They observed an increase in resistance evolution and a two to three-fold increase in the use of herbicides in glyphosate-tolerant crops. Using a mixture of herbicides was the main recommendation for the management of weeds that escape control, while in areas with proven resistance, crop rotation was the main recommendation. Conclusions: Crop rotation and herbicide mixtures are the most recommended management practices, with herbicide resistance and advanced stage of development listed as the main reasons for the difficulties of weed control.

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Variabilidade espacial da planta daninha azevém em cultivo de trigo utilizando diferentes malhas amostrais

Cited by 3 publications

References 12 publications

Variabilidade espacial de plantas daninhas em área de plantio direto no município de Nova Andradina-MS

Variabilidade espacial de plantas daninhas em área de plantio direto no município de Nova Andradina-MS

Precision Agriculture in Brazil: The Trajectory of 25 Years of Scientific Research

Weed management in Roundup Ready® corn and soybean in Southern Brazil: survey of consultants’ perception

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