Search results for " culti"
showing 10 items of 178 documents
Six années de suivi du flux d'érosion éolienne sur un sol sableux cultivé au Sahel : Impacts des résidus de culture et de l'encroûtement
2013
In the Sahel, wind erosion occurs particularly in cultivated fields. This work was leaded at Banizoumbou in Niger where wind erosion fluxes have been measured for six years. The aims of this study was i) to monitor crop residues cover on traditional field and to quantify its influence on wind erosion ii) to characterize the impacts of soils crusting on erosion flux, iii) to characterize the impact of herbaceous strips on wind flux. Results showed that crop residues efficiently prevent cultivated fields from wind erosion during the dry season (January to April) and considerably reduce erosion fluxes at the beginning of the rainy season (May to July). Under a minimal crop residues cover rate …
Inhibition of herpesvirus DNA synthesis by 9-beta-D-arabinofuranosyladenine in cellular and cell-free systems.
1977
9-beta-D-Arabinofuranosyladenine 5'-triphosphate (ara-ATP) is an inhibitor both of DNA polymerase-alpha and -beta from noninfected rabbit kidney cells and of the DNA-dependent DNA polymerase induced by herpes simplex virus Type 1 (strain IES). The studies were performed with partially purified enzymes, and each of the different polymerase preparations contained only one DNA-dependent DNA polymerase species. These enzymes were inhibited in a competitive manner. The HSV-induced DNA-dependent DNA polymerase was 39-fold more sensitive to ara-ATP than was cellular DNA polymerase-beta and 116-fold more sensitive than cellular DNA polymerase-alpha. The affinity of the HSV-induced enzyme for ara-AT…
Green coffee, bioactive compounds’ analysis of experimental cultivation in Sicily: a new frontier in the Sicilian food sector
2023
Recently, climate change represents a new possibility for tropical cultivars fruit in Mediterranean areas. The focus of this work is the evaluation of the real possibility of coffee cultivation in Sicily, like coffee plants grown in tropical and subtropical regions. The objective was to evaluate plant adaptation to our climate and to study the chemical qualities of green coffee pulps and seeds: total phenolic content, antiradical capacity, fatty acids, amino acids, alkaloids, vitamins, proximate composition, polyphenolic profile and other bioactive compounds of cosmetic, pharmaceutical and agrary interest. Temperature, light and vegetative growth of Coffea arabica L. cv. “Caturra” plants we…
HOMEMADE SLOW-ACTION FERTILIZERS, AS AN ECONOMIC SOLUTION FOR ORGANIC FOOD PRODUCTION
2017
Organic plant cultivation, especially those intended for human consumption, poses new requirements for gardening. It is recommended to use organic slow-action fertilizers, which provide doses of nutrients essential for plants for a long time. Particularly valuable fertilizers are those that arise within the household, due to their high quality and the absence of costs associated with their purchase and transport. Organic matter contained in the food industry waste or arising in households, in the absence of contamination by other types of waste, can be used for self-production of organic fertilizer. The paper presents the results of testing organic fertilizers, which you can make yourself, …
Caracterización molecular del mecanismo de patogénesis de las toxinas Cry de Bacillus thuringiensis activas contra insectos coleópteros
2013
Los bioinsecticidas basados en Bacillus thuringiensis (Bt) constituyen una herramienta de gran valor para el control de plagas de insectos, ya que presentan una forma de aplicación muy específica e inocua para los usuarios y el medio ambiente. Entender, tanto el mecanismo de toxicidad de estos bioinsecticidas como la respuesta desencadenada en los insectos diana, tiene como objetivo proporcionar una base útil para el desarrollo de insecticidas mejorados dirigidos contra estas importantes plagas agrícolas, permitiendo ampliar el rango y los niveles de toxicidad de las proteínas insecticidas y abordar problemas como la aparición de resistencia. La presente tesis se ha centrado en el estudio d…
Himera: pratiche cultuali nell’abitato
2014
The excavations of the University of Palermo in ancient Himera (northern Sicily) discovered a relatively large part of the ancient Greek town, which was organized according to a regular grid-plan dated to the first half of 6th century BC (as the latest stratigraphic trials have shown), while in the second quarter of the 5th century and later, till the destruction of the city in 409, several modifications altered the house-blocks and their inner organization. The paper treats the evidences for domestic cultic activities in this latter phase of the settlement, and at the same time examines some contexts that are “intermediate” between the “oikic” and the communal spheres. Albeit the evidence …
Principi di spontaneizzazione di Diospyros kaki (Ebenaceae) in Sicilia
2013
A spontaneous group of plants of Diospyros kaki is reported in a rural area near Menfi, in the province of Agrigento. This is the first record of naturalization of this Asian species – after long time cultivated in various countries of the Mediterranean Basin - observed in Italy.
The influence of proper vine pruning techniques on crop formation and quality of the grapes
2018
We have established the importance of proper vine pruning techniques depending on individual grape variety characteristics and its influence on crop formation and quality of the grapes. The technique of studying the influence of the length of the vine pruning on the qualitative indices of the fruit of the grapes has been proposed. Field research was carried out in 2014-2016. Agricultural technology in the experiment is commonly used for forest-steppe. The vines are planted on the plot without irrigation, the shape of the shrubs is harp multy sleeved with a knot of substitution, sheltered on a vertical trellis of 1.5 m heigh. The methods that can be used to increase the yield of grape variet…
Glycosidic aroma compounds of some Portuguese grape cultivars
2006
In order to evaluate the potential aroma of some Portuguese grapes, several glycosidically bound aroma compounds of ten grape varieties grown in Evora, Alentejo, Portugal, were released, identified and quantified using gas chromatography–mass spectrophotometry. White varieties were Arinto, Perrum, Rabo-de-Ovelha, Roupeiro and Antao Vaz. Red varieties were Trincadeira, Aragonez, Tinta Caiada, Moreto and Castelao. Grapes of Roupeiro and Trincadeira from five other vines in the Alentejo region were also studied. For each variety pulp and skin were analyzed separately. The compounds produced by enzymatic hydrolysis of glycoside precursors extracted from pulps and skins of these grapes were simi…