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Registros recuperados: 9
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Can canopy height of mixed pastures in integrated crop-livestock systems be estimated using planetscope imagery? Repositório Alice
REIS, A. A. dos; WERNER, J. P. S.; SILVA, B. C. da; ANTUNES, J. F. G.; ESQUERDO, J. C. D. M.; FIGUEIREDO, G. K. D. A.; COUTINHO, A. C.; LAMPARELLI, R. A. C.; MAGALHÃES, P. S. G..
ABSTRACT. Canopy height (CH) is one of the key parameters used to evaluate forage biomass production and support grazing management decisions in intensively managed fields. In this study, we demonstrate the potential of using textural information derived from PlanetScope (PS) imagery to estimate CH of intensively managed mixed pastures in an Integrated Crop-Livestock Systems (ICLS) in the western region of São Paulo State, Brazil. PS images and field data of CH were acquired during the forage growing season of 2019 (from May to November) to calibrate and validate the CH prediction models using the Random Forest (RF) regression algorithm. We used as predictor variables eight second-order texture measures derived from the green, red, near-infrared spectral...
Tipo: Anais e Proceedings de eventos Palavras-chave: Sistemas integrados; Nanossatélites; Medidas de textura; Integração lavoura pecuária; Canopy height; Integrated systems; Nano-satellites; Texture measures; Integrated crop-livestock systems; Pastagem.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136079
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Challenges and opportunities for the adoption of integrated farming systems: lessons from Brazil and beyond. Repositório Alice
GARRETT, R.; CORTNER, O.; GIL, J. D. B.; REIS, J. C. dos; FERREIRA, J. N.; VALENTIM, J. F..
Brazil's rural landscapes are critically important for global climate, economic development, and food security. The integration of crop and animal production within a single farm (ICLS) is a promising agricultural innovation to improve livelihood and environmental outcomes in these landscapes. Here we synthesize recent work examining the drivers of ICLS adoption in Brazil, as well as the economic, environmental and social tradeoffs associated with these systems, with a focus on the Legal Amazon region. Our research finds that ICLS are largely an economic and environmental win-win compared to existing extensive cattle management practices and other pasture intensification alternatives. Adopters of ICLS are well aware of the economic benefits of these...
Tipo: Anais e Proceedings de eventos Palavras-chave: Sistemas agrícolas integrados; Integração lavoura-pecuária; Integrated crop-livestock systems; Economia Agrícola; Impacto Econômico; Agricultural economics; Integrated agricultural systems.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130299
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Comparação dos sistemas de plantio direto e convencional para o primeiro ano de cultivo de milho sobre pastagem no Acre. Repositório Alice
MATTER, U. F.; OLIVEIRA, T. K. de; CONTREIRAS, C. T..
No Acre, o cultivo de milho é realizado através do sistema convencional de preparo do solo, sendo utilizadas áreas anteriormente ocupadas por pastagens de gramíneas. Em função do regime de chuvas da região, o sistema de plantio direto possibilita maior número de dias úteis à operação de plantio, dentre outras vantagens. Porém, nesse sistema, devido à imobilização do nitrogênio pelos restos de capim, é necessária maior quantidade de N para produção satisfatória de milho. Objetivou-se avaliar a exigência de nitrogênio no primeiro ano de plantio de milho em área ocupada por pastagem nos sistemas de preparo convencional e direto. Foi conduzido experimento em Latossolo Vermelho distrófico textura média, no delineamento experimental de blocos casualizados e...
Tipo: Parte de livro Palavras-chave: Acre; Plantio convencional; Latossolo vermelho distrófico; Maíz; Cero labranza; Labranza convencional; Nitrógeno; Mineralización; Pastizales; Rendimiento de los cultivos; Integrated crop-livestock systems; Integração lavoura-pecuária; Amazônia Ocidental; Western Amazon; Amazonia Occidental.; Milho; Adubação de Cobertura; Plantio Direto; Zea Mays; Rendimento.; Pastagem; Fixação de Nitrogênio; Pastures; Nitrogen fertilizers; Mineralization; Integrated agricultural systems; No-tillage; Corn; Crop yield.; Nitrogen; Conventional tillage.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1130108
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Drivers of decoupling and recoupling of crop and livestock systems at farm and territorial scales. Repositório Alice
GARRETT, R. D.; RYSCHAWY, J.; BELL, L. W.; CORTNER, O.; FERREIRA, J. N.; GARIK, A. V. N.; GIL, J. D. B.; KLERKX, L.; MORAINE, M.; PETERSON, C. A.; REIS, J. C. dos; VALENTIM, J. F..
Crop and livestock production have become spatially decoupled in existing commercial agricultural regimes throughout the world. These segregated high input production systems contribute to some of the world's most pressing sustainability challenges, including climate change, nutrient imbalances, water pollution, biodiversity decline, and increasingly precarious rural livelihoods. There is substantial evidence that by closing the loop in nutrient and energy cycles, recoupling crop and livestock systems at farm and territorial scales can help reduce the environmental externalities associated with conventional commercial farming without declines in profitability or yields. Yet such 'integrated' crop and livestock systems remain rare as a proportion of global...
Tipo: Artigo de periódico Palavras-chave: Integração lavoura-pecuária; Integrated crop-livestock systems; Agricultural production; Sistemas agrícolas integrados; Adopción de innovaciones; Agricultura sustentable; Sistema de Cultivo; Produção Agrícola; Pecuária; Adoção de Inovações; Agricultura Sustentável; Transferência de Tecnologia; Cropping systems; Integrated agricultural systems; Innovation adoption; Sustainable agriculture; Technology transfer.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1121293
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Modelling integrated crop-livestock systems: preliminary results from an agroecosystem model. Repositório Alice
DIAS, H. B.; CUADRA, S. V.; FIGUEIREDO, G. K. D. A.; LAMPARELLI, R. A. C.; SILVA, L. E. A.; SILVA, Y. F. da; MORO, E.; ALVES, M. R.; MAGALHÃES, P. S. G..
ABSTRACT. Integrated Crop-Livestock Systems (ICLS) are being considered to improve food production sustainability and are of increasing interest to the modelling community worldwide. Our goal was to evaluate the ability of an agroecosystem model simulator (ECOSMOS) to predict plant growth and yield, and water dynamics in an ICLS in the Western region of São Paulo State, Brazil. Four fields of approximately 50 ha each were monitored after the implementation of the ICLS at the end of 2018. Soybean yields (two seasons), mixed-pasture aboveground dry biomass and soil water content (for the pasture only) measurements were contrasted with predictions from ECOSMOS with recently implemented soybean and pasture sub-models. Preliminary results from a generic...
Tipo: Anais e Proceedings de eventos Palavras-chave: Sistemas integrados lavoura-pecuária; Agriculture (Soybean); Modelagem; Pasture; Intensification; Integrated crop-livestock systems; Agricultura; Soja; Pastagem.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136082
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Potential land-saving effects from integrated crop-livestock-forestry systems. Repositório Alice
MARTHA JUNIOR, G. B..
ABSTRACT. A bold sustainable intensification strategy involves a multiple approach combining increased yields, cropping intensity, and resource-use efficiency. Well-designed and implemented integrated crop-livestock-forestry systems (ICLS) can achieve those goals. In this paper I discuss the potential land-saving effects arising from the recovery of low-productive pastures through ICLS and the potential land-saving effects from productive livestock systems already in rotation with high-yielding soybean crops. The recovery of low productive pastures offers an impressive way of sparing land from cultivation. Land-saving effects resulting from turning low productivity pastures into productive ones through ICLS may reach 11 ha spared/ha recovered but figures...
Tipo: Anais e Proceedings de eventos Palavras-chave: Sistemas integrados lavoura-pecuária; Produtividade da terra; Intensificação sustentável; Pesquisa e desenvolvimento agrícola; Efeitos de economia de terra; Integrated crop-livestock systems; Agricultural R&D; Jevons´ paradox; Sustainable intensification; Economia da Terra; Uso da Terra; Land use change.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1136084
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Production, carbon and nitrogen in stover fractions of corn ( Zea mays L.) in response to cultivar development Ciência e Agrotecnologia
Barbosa,Julierme Zimmer; Ferreira,Carla Fernanda; Santos,Nicolas Zendonadi dos; Motta,Antonio Carlos Vargas; Prior,Stephen; Gabardo,Juarez.
ABSTRACT Changes in quantity and quality of corn crop stover can have a large impact on soil conservation and soil carbon (C) sequestration over large areas. The aim of this study was to evaluate changes in production, concentration and amount of C and nitrogen (N) in corn stover fractions due to cultivar development. Two field experiments were conducted in the city of Rolândia (Paraná State, Brazil) using ten cultivars representing five technological levels: single cross hybrids, double or triple hybrids, commercial varieties, and creole cultivars. Plant heights and stalk, leaf, cob, husk and tassel weights were determined at final harvest. Elemental C and N analyses were performed in triplicate for each stover fraction. In general, the creole cultivars...
Tipo: Info:eu-repo/semantics/article Palavras-chave: C/N ratio; Genetic breeding; No-tillage system; Integrated crop-livestock systems; Renewable energy.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600665
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Sticky Nightshade Infestation and Dispersion on an Integrated Soybean-Eucalyptus System at Subtropical Brazil Planta Daninha
DEISS,L.; MORAES,A.; PELISSARI,A.; PORFÍRIO-DA-SILVA,V.; DOMINSCHEK,R..
ABSTRACT: Trees in integrated crop-livestock systems can reduce infestation and dispersion of weeds because of a negative interference promoted by competition for light, water and nutrients. The objective of this study was to evaluate the infestation and dispersion of sticky nightshade (Solanum sisymbriifolium) in soybean in different positions between eucalyptus (Eucalyptus dunnii) double rows [20 m x (4 m x 3 m)] in an integrated crop-livestock system at Subtropical Brazil. The experiment was conducted in a randomized block design, with nine replications, and five equidistant positions between double rows (n=45) as treatments. Sticky nightshade was evaluated for infestation through biomass, plant density (reproductive and vegetative plants), and for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Integrated crop-livestock systems; Weed; Alley cropping; Ecophysiology; Agroforestry.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100207
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Weed Seed Bank in an Agroforestry System With Eucalyptus in Subtropical Brazil Planta Daninha
DEISS,L.; MORAES,A.; PELISSARI,A.; PORFÍRIO-DA-SILVA,V.; SCHUSTER,M.Z..
ABSTRACT : Trees can modify the weed seed bank composition and distribution in the cropped area of an agroforestry system. This study aimed at analyzing the eucalyptus (Eucalyptus dunnii) effect on spatial distribution, functional traits abundance and weed seed bank botanic composition in an agroforestry system under no-tillage in Subtropical Brazil. The experiment was conducted in a randomized block design with five replications, and five positions between 4.5-year-old eucalyptus double rows [(4x3) x 20 m] as treatments. Soil sampling was performed at 0-20 cm and the method to quantify and identify seeds was the seedling emergence in trays, inside a greenhouse. Weed phytosociological indices (relative density, frequency and importance), functional traits...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alley cropping; Phytosociology; Integrated weed management; Integrated crop-livestock systems; Functional traits; Spatial distribution patterns.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100222
Registros recuperados: 9
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