Artigos científicos, teses e dissertações
Publicados nas melhores instituições de ensino

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The objective of the present study was to evaluate 1) the effect of hydric deficiency on growth of sugarcane varieties and implications of Meloidogyne incognita parasitism on plant response, 2) hydric relations and gaseous change in sugarcane varieties under both nematode parasit...

Soil compaction and water availability are related to crop performance. Its individual effects are very difficult to be measured and, possibly, they have joint effects in field conditions. In periods of lack of rain the plant water deficit and the soil resistance to root growth a...

The knowledge of Morphophysiological mechanisms that allow a plant tolerate water stress conditions constitutes important tool for analyzing the quality of seedlings, so it the work aimed to quantify the effects of water management in the period of rustification in seedlings of H...

The peach fruit production for processing in Southern of Rio Grande do Sul responds for 90% of the national production. The droughts probabilities in the summer in this region have coincided with the critical periods to water lack of the culture. Therefore, it becomes necessary a...

The cultivation of medicinal plants, like marigold, is increasing in Brazil and is an alternative for cultivation in small areas. For this reason it is important to know about its bioclimatic requirements and its phenometric characteristics in order to obtain maximum quality and ...

Foi conduzido um estudo com alfafa (Medicago sativa L.), cv. Crioula,semeada em junho de 1989 (0,3 m entre linhas), na EEA-UFRGS, em Eldorado do Sul (30.5'S,51.39'W e 46 m de altitude), visando avaliar a resposta da cultura a agua e sua interacao com a disponibilidade de fosforo ...

Planet Earth seen from outer space, as shown by numerous satellites photographs, reveals an impressive beauty. What is the cause of such beauty? Surely it is water. Throughout the centuries, the complexity of the multiple uses of water by man increased and produced an enormous se...

Coffee production is a very important activity in the socioeconomic context in Brazil, which makes billion of dollars go around the economy every year generating thousands of direct and indirect jobs. The success in the coffee production depends on the observation of several need...

Recent studies show increasingly higher concentrations of greenhouse effect gases in the atmosphere since the Industrial Revolution. The major responsibility for the global warming is attributed to such increase, caused by gases resulting mainly from anthropic activities like bur...

The degradation of the natural resources worries studious of diverse areas of the knowledge and the population, in general. In semi-arid regions, as the north-eastern Brazilian, this problematic is aggravated due to the natural vulnerability ally to the process of use and occupat...

A falta de dados hidrológicos é fator limitante da representação mais precisa do comportamento hídrico, comprometendo a gestão de bacias hidrográficas. Quando estas bacias são responsáveis pelo abastecimento publico a situação torna-se crítica. Este trabalho tem como objetivo des...

Entender as necessidades hídricas dos cultivos de cana-de-açúcar é imprescindível quando se buscam melhores colheitas, visto que um dos principais fatores que limitam a produtividade agrícola no Nordeste brasileiro, é a precipitação pluvial, razão por que se instalou, com objetiv...

A floristics and phytosociologycaI survey was developed at Jardim Botânico MunicipaI de Bauru (JBMB), São Paulo state (220 20 S e 490 00 W), a 321 hectare urban reserve, in a fragment of tropical semideciduous forest, surrounded by a larger fragment, defined as forested savanna. ...

The experiment was conducted to evaluate the availability of forage and weight gain in grazing Marandu Grass (Brachiaria brizantha (Hochst. ex. A. Rich.) Webster cv. Marandu) fertilized with nitrogen in the absence and presence of Gliricidia (Gliricidia sepium (Jacq ) Kunth , Wal...

Located in Campos dos Goytacazes municipality, northern region of Rio de Janeiro State, comprising approximately 440km2 of the coastal plain (continental portion of Campos Sedimentary Basin), the area under study comprises the most important districts of the municipality - Goytac...

Resumo A deficiência hídrica é considerada um fator que produz danos significativos durante o período de estabelecimento e de crescimento dos plantios. O objetivo deste estudo foi investigar características morfofisiológicas e bioquímicas de folhas de mudas de seringueira em resp...