Maize and soybeans production in integrated system under no-tillage with different pasture combinations and animal categories

Silva, Hernani Alves da; Moraes, Aníbal de; Carvalho, Paulo César de Faccio; Fonseca, Adriel Ferreira da; Dias, Carlos Tadeu dos Santos

doi:10.1590/s1806-66902012000400018

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…Previous studies also have shown that grazing decreased the seed weights of Leymus chinensis (Wang et al, 2011), maize (Silva et al, 2012) and various native plant species in the Monte Desert of Argentina (Cerda et al, 2012). In our study, the seed weight in severe grazing plots was significantly higher than those in mild grazing and fenced plots.…”

Section: Effect Of Grazing Intensity On Seed Production Of C Stenophsupporting

confidence: 66%

Effects of grazing intensity on seed production of Caragana stenophylla along a climatic aridity gradient in the Inner Mongolia Steppe, China

et al. 2016

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As climatic aridity and grazing intensity increases, shrubs play an increasingly important role in grassland ecosystem functioning and services, and its abundance also generally increases. However, the effects of climatic aridity and grazing intensity on sexual reproduction of shrubs in grasslands remain largely unclear. In order to understand the effects of grazing intensity and climatic drought stress, and their interaction on seed production of shrub species, we examined the seed number, seed weight and seed yield of Caragana stenophylla under three grazing intensities (fenced, mild grazing and severe grazing) across a climatic aridity gradient (semi-arid, arid, very arid and intensively arid zones) in the Inner Mongolia Steppe, northern China during 2012-2013. The seed number, seed weight and seed yield gradually increased from the semi-arid to the very arid zones, but decreased from the very arid to the intensively arid zones in fenced plots. The seed number and seed yield decreased from the semi-arid to the intensively arid zones in mild and severe grazing treatment plots, therefore, grazing enhanced the suppression effect of climatic aridity on seed production of C. stenophylla. The seed number and seed yield gradually decreased as grazing intensity increased. The seed weight was highest in severe grazing plots, followed by the mild grazing plots and then the fenced plots. Precipitation varied interannually during the study period. We observed that the seed number, seed weight and seed yield were lower in the low precipitation year (2013) than in the high precipitation year (2012). As climatic drought stress increased, the negative effects of grazing on seed production of C. stenophylla also gradually increased. Our results indicated that climatic drought stress may contribute to the encroachment of C. stenophylla shrub in arid zones by promoting its seed production. However, grazing had negative effects on sexual reproduction of C. stenophylla, and the combined effects of drought stress and grazing seriously suppressed sexual reproduction of C. stenophylla in the intensively arid zone.

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Section: Effect Of Grazing Intensity On Seed Production Of C Stenophsupporting

confidence: 66%

Effects of grazing intensity on seed production of Caragana stenophylla along a climatic aridity gradient in the Inner Mongolia Steppe, China

et al. 2016

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“…Unfortunately, long-term experimental results on possible interaction effects between system components are not yet available for integrated systems containing tree crops in Mato Grosso. In the case of crop-livestock interactions, short-term experiments have already been conducted in conditions similar to those of our study area (Landers 2007;Flores et al 2007;Silva et al 2012;Kunrath et al 2015) and suggest that the magnitude of shortterm profitability effects is rather small. Given such limited evidence, we opted for not including any interaction effects in our present model implementation.…”

Section: Implementation Of Integrated Production Systemsmentioning

confidence: 62%

Can preferential credit programs speed up the adoption of low-carbon agricultural systems in Mato Grosso, Brazil? Results from bioeconomic microsimulation

et al. 2017

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The need to balance agricultural production and environmental protection shifted the focus of Brazilian land-use policy toward sustainable agriculture. In 2010, Brazil established preferential credit lines to finance investments into low-carbon integrated agricultural systems of crop, livestock and forestry. This article presents a simulation-based empirical assessment of integrated system adoption in the state of Mato Grosso, where highly mechanized soybean-cotton and soybean-maize doublecrop systems currently prevail. We employ bioeconomic modeling to explicitly capture the heterogeneity of farmlevel costs and benefits of adoption. By parameterizing and validating our simulations with both empirical and experimental data, we evaluate the effectiveness of the ABC Integration credit through indicators such as land-use change, adoption rates and budgetary costs of credit provision. Alternative scenarios reveal that specific credit conditions might speed up the diffusion of low-carbon agricultural systems in Mato Grosso.

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“…os animais (leves e pesados) testados. Além disso, proporcionaram fitomassa residual após o pastejo animal acima de 2.700 kg ha -1 de massa seca, a qual é adequada para o sistema de produção adotado e não prejudica a produtividade das culturas subsequentes (Silva et al, 2012).…”

Section: Resultsunclassified

“…(2) Dados experimentais conforme Silva et al (2012). (3) Dados experimentais conforme Silva et al (2011).…”

Section: Methodsunclassified

Viabilidade econômica da produção de novilhas leiteiras a pasto em sistema de integração lavoura-pecuária

Silva

Moraes

Carvalho

et al. 2012

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a rentabilidade do sistema de integração lavoura-pecuária (ILP), em comparação ao cultivo de cereais de inverno e de plantas de cobertura para o plantio direto de soja e milho no verão. Foram comparados dados simulados de sistema agrícola tradicional com produção de grãos de milho e soja, no verão, e cultivo de trigo e plantas de cobertura do solo, no inverno; e dados de um trabalho publicado em que foram avaliadas combinações de pastagens (diversificadas ou puras) e categorias de animais (leves ou pesados), com produção de grãos de milho e soja, no verão, e pastejo no inverno. A análise econômica foi realizada com base nos resultados experimentais e simulada para uma propriedade de 100 ha. A ILP com recria de novilhas leiteiras em pastagens anuais de inverno, em substituição ao sistema convencional com cultivo de cereais de inverno e plantas de cobertura de solo para o plantio direto, é a alternativa mais rentável aos produtores.Termos para indexação: agricultura conservacionista, análise econômica, pastagens anuais de inverno, recria de novilhas, sistema integrado de produção. Economic viability of dairy heifer production on pasture in crop-livestock integration systemAbstract -The objective of this work was to evaluate the profitability of the integrated crop-livestock (ICL) system in comparison to the cultivation of winter cereals and cover crops for soybean and maize cropped under no-tillage in the summer. The following were compared: simulated data from a conventional agricultural system with production of maize and soybean grains in the summer and cultivation of wheat and ground cover plants in the winter; and data from a published work in which combinations of pastures (diversified or pure) and animal categories (light or heavy) were evaluated in a system with the production of maize and soybean in the summer and grazing during the winter. Economic analysis was carried out based on previous experimental results and simulated for a 100-ha property. ICL with rearing of dairy heifers in winter annual grazing, as a replacement to winter cereal crops and ground cover crops for no-tillage, is the most profitable alternative for producers.

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Maize and soybeans production in integrated system under no-tillage with different pasture combinations and animal categories

Cited by 13 publications

References 16 publications

Effects of grazing intensity on seed production of Caragana stenophylla along a climatic aridity gradient in the Inner Mongolia Steppe, China

Effects of grazing intensity on seed production of Caragana stenophylla along a climatic aridity gradient in the Inner Mongolia Steppe, China

Can preferential credit programs speed up the adoption of low-carbon agricultural systems in Mato Grosso, Brazil? Results from bioeconomic microsimulation

Viabilidade econômica da produção de novilhas leiteiras a pasto em sistema de integração lavoura-pecuária

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