Grass Roots
Mostrando 1-12 de 79 artigos, teses e dissertações.
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1. Influence of irrigation frequency and nitrogen concentration on Tifway 419 bermudagrass in Brazil
ABSTRACT Tifway 419 Bermudagrass is widely used on athletic fields, requiring irrigation and fertilization for its maintenance; however, little information is available for Bermudagrass management in tropical countries, as Brazil. Thus, this study aimed to evaluate the effect of irrigation frequency and nitrogen (N) fertilization on the development of Tifway
Revista Ceres. Publicado em: 2022
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2. Trophic ecology of citrus pests based on stable isotope analysis
ABSTRACT: Macrodactylus pumilio Burm. (Coleoptera: Scarabeidae) and Naupactus cervinus (Boh.) (Coleoptera: Curculionidae) are considered primary pests in citrus crops in Brazil, causing damage to plants and decreasing productivity. However, few studies investigate the ecology of these insects. In this context, the use of stable isotopes analysis (SIA) emerge
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
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3. Root and Shoot Contribution to Carbon and Nitrogen Inputs in the Topsoil Layer in No-Tillage Crop Systems under Subtropical Conditions
ABSTRACT Recycling of carbon (C) and nitrogen (N) from plants into soils is decisive for maintaining soil organic matter and soil fertility. Therefore, we quantified plant biomass and C and N in the shoots and roots from the topsoil layer for a wide range of annual crops grown under subtropical conditions. We grew 26 species, 13 main crops, and 13 cover crop
Rev. Bras. Ciênc. Solo. Publicado em: 06/08/2018
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4. Reclamation of a Degraded Coal-Mining Area with Perennial Cover Crops
ABSTRACT: Studies addressing the potential of grass roots in improving the structural quality of constructed minesoils are not frequent in the literature, although they are essential for understanding the re-establishment of soil functions in the environment. The objective of this study was to quantify the root attributes of the species Urochloa humidicola,
Rev. Bras. Ciênc. Solo. Publicado em: 19/12/2016
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5. PROCESSING IN THE QUALITY OF TANZANIA GRASS SEEDS
ABSTRACT The available research concerning the processing of grass seeds is scarce, despite its fundamental importance for national and international agribusiness. The objective of this project was to evaluate the effects of processing phases on the physical and physiological quality of tanzania grass seeds for commercialization purposes. Seeds were sampled
Eng. Agríc.. Publicado em: 2016-12
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6. Microclimate and soil moisture in a silvopastoral system in southeastern Brazil
In this study, the microclimate changes in silvopastoral systems are quantified at different time and spatial scales and compared with single-pasture systems. The study was conducted in a silvopastoral system in São Carlos, Brazil (22°01' South and 47°53' West). The silvopastoral system consisted of grass pastures [Urochloa (sin. Brachiaria) decumbens cv.
Bragantia. Publicado em: 2015-03
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7. Soil phosphorus dynamics as affected by Congo grass and P fertilizer
Some plant species can change soil phosphorus (P) availability and this may be an important tool in managing tropical high fixing phosphorus soils. An experiment was conducted to evaluate phosphorus transformations in the soil and phosphatase activity during periods of Congo grass (Brachiaria ruziziensis, Germain et Evrard) growth in two tropical soils recei
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-08
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8. Adaptation of the C4 grass Panicum maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation patterns
Dry mass production and persistence of Panicum maximum pastures depends on nitrogen supply. Defoliation influences N uptake and allocation patterns yet its effects on plasticity of N dynamics in P. maximum have not been investigated. Stable isotopes of N (15N) were used in order to test the hypothesis that defoliation in terms of proportion of the leaf area
Sci. agric. (Piracicaba, Braz.). Publicado em: 2012-10
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9. Effectiveness of plant growth promoting rhizobacteria in facilitating lead and nutrient uptake by little seed canary grass
We investigated the effectiveness of Nitroxin inoculation on lead (Pb) and nutrient uptakes by little seed canary grass. The factors tested included inoculation (or not) with Nitroxin and different soil concentrations of Pb (0, 200, 400 and 800mgPbkg-1 soil). Increasing soil concentrations of Pb decreased stem, leaf and root dry weights. Shoot phosphorus con
Braz. J. Bot.. Publicado em: 2012
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10. Aluminum-induced genes in grass species.
This study aimed to identify genes associated with Al tolerance mechanisms in grasses, using cDNA and subtracitve libraries derived from roots of maize, rice, sorghum, oat, barley, wheat and brachiaria tolerant genotypes submitted to critical levels of Al in nutrient solution.
INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY. Publicado em: 2011
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11. Aluminum-induced genes in grass species.
The toxicity caused by aluminum (Al), intrinsic to acid soils, in?uences negatively the stability of crop production. Under toxic levels of Al, plant roots paralyze their development and become unable to explore the deeper layers of the soil, affecting nutrient and water acquisition and reducing crop yield. This study aimed to identify genes associated with
INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY. Publicado em: 2011
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12. Fungos micorrízicos arbusculares em amendoim forrageiro (Arachis pintoi Krap. e Greg.).
Este trabalho foi realizado na Embrapa Agrobiologia em Seropédica,RJ, no km 7 da BR 465 (antiga rodovia Rio-São Paulo), com o objetivo de avaliar a associação de fungos micorrízicos arbusculares (FMAs) com o amendoim forrageiro (Arachis pintoi) em quatro situações de cultivo. 0 primeiro estudo avaliou a associação do A. pintoi com FMAs autoctones, a
2008.. Publicado em: 2011