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COMPORTAMENTO DELLA CV DI PESCO ZINCAL 5 ALLEVATA IN COLTURA PROTETTA A PALMETTA E A Y-TRASVERSALE.
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COMPORTAMENTO DELLA CV DI PESCO ZINCAL 5 ALLEVATA IN COLTURA PROTETTA A PALMETTA E A Y-TRASVERSALE.
No full textThe Effect of Soil Moisture and Transpiration on Mineral Content in Leaves and Berries of Cabernet Sauvignon Grapevine.
No full textAnti-Transpirant effects on vine physiology, berry and wine composition of cv. Aglianico (Vitis vinifera L.) grown in South Italy
Full text linkIn viticulture, global warming requires reconsideration of current production models. At the base of this need there are some emerging phenomena: modification of phenological phases; acceleration of the maturation process of grapes, with significant increases in the concentration of sugar musts; decoupling between technological grape maturity and phenolic maturity. The aim of our study was to evaluate the effect of a natural anti-transpirant on grapevine physiology, berry, and wine composition of Aglianico cultivar. For two years, Aglianico vines were treated at veraison with the anti-transpirant Vapor Gard and compared with a control sprayed with only water. A bunch thinning was also applied to both treatments. The effectiveness of Vapor Gard were assessed through measurements of net photosynthesis and transpiration and analyzing the vegetative, productive and qualitative parameters. The results demonstrate that the application of antitranspirant reduced assimilation and transpiration rate, stomatal conductance, berry sugar accumulation, and wine alcohol content. No significant differences between treatments were observed for other berry and wine compositional parameters. This method may be a useful tool to reduce berry sugar content and to produce wines with a lower alcohol content
Influence of transpiration on Ca-concentration in berries and leaves of Cabernet sauvignon (Vitis vinifera L.).
No full textMeasurements of leaf blade and berry transpiration were carried out on Cabernet sauvignon (Vitis vinifera L.). At the same time samples of leaf blade, petioles and berries were picked up and their Ca concentration was determined. Leaf blade and berry transpiration rate changed during growth phases of berries. Under lower soil water availability, berry transpiration decreased proportionally to the decrease of leaf transpiration, whereas at higher soil water availability berry traspiration values was not influenced by higher leaf traspiration rate. Final values of transpiration rate had no influence on Ca concentration (mg/g f.w.), or on Ca content (% d.m.) of berries, which confirms previous results obtained in grapes under different environmental conditions and in apple
Slow-release fertilization and Trichoderma harzianum-based biostimulant for the nursery production of young olive trees (Olea Europaea L.)
No full textValorization of local olive cultivars is a key factor for the medium-term development strategy of the Italian olive agroindustry. This involves enhancements in both, cultural practices and nursery techniques. The aim of this research was the evaluation in nursery, on vegetative growth and root development of young olive plants, of two different treatments: substrate enrichment with Osmocote®, a slow-release fertilizer, and Trianum-P a Trichoderma harzianum based biostimulant applied as foliar spray. The trial was carried out on Rotondella and Salella, two autochthonous olive cultivars from the Campania region (southern Italy). Central axis height, number and length of lateral shoots, leaf number and trunk base diameter were monitored during the experiment. Eight months later, all plants were uprooted, and further parameters were measured: total leaf area, trunk cross sectional area (TCSA), fresh and dry weight of the leaves, shoots, trunk, roots, and total dry matter. The canopy/root ratio (C/R) was also determined. Overall, the Osmocote® treatment caused a significant increase in the vegetative growth parameters for both cultivars, with a more evident effect on the development of the canopy organs. The observation reported in the present work can represent a convenient piece of information particularly in relation to stress resilience in nursery production
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