Tobacco Crop
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Least limiting water range, S-index and compressibility of a Udalf under different management systems
ABSTRACT: Agricultural areas in the region of Turuçu, on the Southeast Hillside in the state of Rio Grande do Sul (RS), Brazil present many examples of soil physical degradation. Accordingly, strategies aimed at evaluating and ameliorating the structural quality of soils should be developed to ensure the sustainable use of these areas. This study aimed to e
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
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2. Phosphorus Forms in Sediments as Indicators of Anthropic Pressures in an Agricultural Catchment in Southern Brazil
ABSTRACT Phosphorus (P) fractionation is a suitable procedure to ascertain P lability in sediments and is able to distinguish sources of P under different soil management practices in a catchment. Brazil is the second largest producer and the largest exporter of tobacco in the world. Inadequate management of cultivated areas exposes the soil to erosion proce
Rev. Bras. Ciênc. Solo. Publicado em: 04/12/2017
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3. Agriculture itinérante sur brûlis (AIB) et plantes cultivées sur le haut Maroni: étude comparée chez les Aluku et les Wayana en Guyane française
Abstract In the late 18th century, Aluku Maroons, descendants of rebel slaves from Dutch plantations and Wayana Indians, fleeing from Brazilian slave hunters met on the upper Maroni in French Guiana. They shared the river and several techniques of subsistence, including slash and burn agriculture, and cultived plants. However our study shows that ancestor wo
Bol. Mus. Para. Emílio Goeldi. Ciênc. hum.. Publicado em: 2016-08
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4. Susceptibility to DNA damage in workers occupationally exposed to pesticides, to tannery chemicals and to coal dust during mining
Our mutagenesis group has been studying with important economic drivers of our state, such as agriculture, the footwear and leather industry and open-cast coal mining. Working conditions in these sectors have potentially harmful to humans. The aim of these studies is to determine the health risk of workers by biomonitoring subjects exposed to genotoxic agent
Genet. Mol. Biol.. Publicado em: 2012
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5. MODELING OF WATER, SEDIMENT AND PHOSPHORUS LOADS IN AN AGRICULTURAL WATERSHED IN SOUTHERN BRAZIL / MODELAGEM DO ESCOAMENTO, DA PRODUÇÃO DE SEDIMENTOS E DA TRANSFERÊNCIA DE FÓSFORO EM BACIA RURAL NO SUL DO BRASIL
Areas under intensive tobacco crop cultivation have been impacting the water balance and increasing soil erosion in Southern Brazil. Application of large amounts of mineral fertilizers, higher than the tobacco requirement, contributes to excessive phosphorus loads in soil and water bodies. The assessment of potential environmental impacts due to changes in l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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6. Bioactivity of botanical insecticides on Ascia monuste orseis (LEPIDOPTERA: PIERIDAE) / BIOATIVIDADE DE INSETICIDAS BOTÂNICOS SOBRE Ascia monuste orseis (LEPIDOPTERA: PIERIDAE)
Given the great importance of Ascia monuste orseis as insect-pest of Brassicaceae, this work was carried out to evaluate, under laboratory conditions, the action of botanical insecticides on larvae and egg masses, as well as the food consumption of larvae and test, in field conditions, the efficiency of control, of botanical insecticides which showed better
Publicado em: 2009
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7. Efeito de um inibidor de proteinase serinica sobre o desenvolvimento e atividade enzimatica de Heliothis virescens (Lepidopter: Noctuidae) / Effect of a trypsin inhibitor on the development and enzymatic activity of Heliothis virescens (Lepidoptera: Noctuidae)
Proteinase inhibitor proteins (PIs) are one of the defensive chemicals produced by plants against pests and pathogens. PIs are polypeptides that are able to bind to insect midgut proteolytic enzymes, rendering them inactive by competitive inhibition. This process leads to a limitation of essential amino acids in protein synthesis, and thus, to reduction in g
Publicado em: 2007
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8. THE UNSUSTAINABILITY OF SOIL USE WITH TABACCO CROP ON STEEP SLOPES / A INSUSTENTABILIDADE DO USO DO SOLO COM FUMICULTURA EM TERRAS DECLIVOSAS
Areas susceptibility to water erosion and strong pressure of soil use, as in Southern Brazil, where there is cultivation of tobacco, are prone to degradation of the natural resources. The objective of this dissertation was to evaluate the unsustainability of the natural resources in a watershed under tobacco production, characterized by steep slopes, with in
Publicado em: 2007
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9. TILLAGE SYSTEMS OF THE TOBACCO CROP WITH EMPHASIS TO THE MANAGEMENT OF THE PRACTICES AND SOIL CONSERVATION / SISTEMAS DE CULTIVO DA CULTURA DO FUMO COM ÊNFASE ÀS PRÁTICAS DE MANEJO E CONSERVAÇÃO DO SOLO
Sistemas de manejos do solo com o mínimo de revolvimento e com palha em superfície predominam na maioria dos cultivos agrícolas, no Sul do Brasil. A utilização do plantio direto na cultura do fumo está sendo iniciada, mas restrita a locais isolados e a alguns agricultores, que, via testes empíricos e adaptação de equipamentos, buscam preservar o sol
Publicado em: 2006
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10. NITRATE IN THE SOIL SOLUTION AND IN THE WATER OF WELLS USED FOR HUMAN CONSUMPTION IN A TOBACCO PRODUCING WATERSHED / NITRATO NA SOLUÇÃO DO SOLO E NA ÁGUA DE FONTES PARA CONSUMO HUMANO NUMA MICROBACIA HIDROGRÁFICA PRODUTORA DE FUMO
A fumicultura no Rio Grande do Sul é desenvolvida em propriedades familiares em regiões ecologicamente frágeis, com solos rasos e alta declividade. Nessas regiões nascem rios e ocorre a formação de pequenas bacias hidrográficas. As áreas são fragilizadas por sistemas de manejo do solo impróprios para aquelas condições e, para manter a capacidade
Publicado em: 2006
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11. Use of repellents for honeybees (Apis mellifera L.) in vitro in the yellow passion-fruit (Passiflora edulis Deg) crop and in confined beef cattle feeders
The presence of Apis mellifera in places such as candy and soft drink factories, restaurants, and ice-cream shops has been a concern to many people. In the yellow passion-fruit crop, Apis mellifera is able to collect all anther pollen but has no active role in pollination. Honeybees also visit animal feeders with chopped sugar cane, preventing the cattle fro
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2004
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12. The N gene of tobacco confers resistance to tobacco mosaic virus in transgenic tomato.
It has been proposed that cloned plant disease resistance genes could be transferred from resistant to susceptible plant species to control important crop plant diseases. The recently cloned N gene of tobacco confers resistance to the viral pathogen, tobacco mosaic virus. We generated transgenic tomato plants bearing the N gene and demonstrate that N confers