746 research outputs found
Weeds in Non-Agricultural Areas: How to Evaluate the Impact? A Preliminary Case Study in Archaeological Sites
No full textThe term “weeds” refers to “plants suitable for habitats modified by man and that interfere with human activities”. It implies an anthropocentric rather than an ecological vision since the existence and the characteristic of the interference depends on men’s purposes. In the archaeological sites, the most important damage is the functional one and it ranges from hazards for the structures to the interference that weed flora can exert on the technical management and fruition of the site. In this particular type of environment, the diverse methods available to quantify the magnitude of the infestation are not sufficient to describe the potential or actual hazard to which a given infested site is subjected. Therefore, it is necessary to consider a greater degree of detail (including morphological, ecological, and physiological properties of the weeds) and to keep them all in consideration. The aim of the present work was to try to identify and propose a method for the assessment of the hazards and thus the damages that a weed community can lead in sites of historical and archaeological interest. The procedure quantifies the degree of the infestation, in terms of occurring species, quantifies the related hazard based on some traits of the weed species, and calculates indexes capable of providing synthetic and comparable information on the hazard to which the site is exposed. The proposed method was applied and tested in some sites of archaeological interest in the Apulia Region, in southern Italy. Applied to the surveyed archaeological sites, the proposed Indexes revealed the presence of weed infestations variously assorted in terms of potential damage, generating different hazard scores. This confirms the importance of understanding the type of infestation and not only its extent. In this study, a procedure was provided that can support decision-makers. Although studied for archaeological sites, the same principles adopted in this procedure could be proposed for other non-agricultural areas
Effetti di diverse tipologie di inerbimento sugli aspetti qualitativi della cultivar Italia allevata a tendone in provincia di Bari
No full textIl sud Italia, in modo particolare Puglia e Sicilia , rappresenta il principale areale di coltivazione dell'uva da tavola con oltre il 90 % della produzione nazionale. AI fine di ottenere una gestione sempre più sostenibile sia dal punto di vista ambientale sia economico e nello stesso tempo ottenere produzioni di qualità, negli ultimi anni sono state avviate delle sperimentazioni per una gestione del terreno eco-compatibile con pratiche quali inerbimento, pacciamatura, ecc . Da anni sono disponibili risultati di sperimentazioni e applicazioni su vite da vino specialmente in ambienti settentrionali; invece molto limitate e quasi scarse sono le infoomazioni per la viticoltura da tavola. Attualmente si sta diffondendo, anche negli ambienti del meridione d'Italia, la tecnica dell'inerbimento sia naturale sia artificiale per diverse specie arboree da frutto. Sulla base di queste considerazioni si è pensato di impostare una prova di inerbimento in un vigneto di vite ad uva da tavola in Puglia. La prova è iniziata nell'annata 2009/2010 in un vigneto commerciale di cinque anni condotto in irriguo e sito in agro di Acquaviva delle Fonti (BA). La cultivar utilizzata nella prova è Italia, innestata su 1103P, e la fooma di allevamento il tendone. Le tesi messe a confronto sono state: TI, inerbimento con trifoglio sotterraneo (Trifolium subterraneum L.); T2, inerbimento con festuca (Festuca arundinacea Schreb.); TI , inerbimento naturale; T4 , controllo lavorato. I risultati del primo anno della sperimentazione, tuttora in corso, mostrano che non sono emerse differenze significative tra le tesi a confronto per le caratteristiche biometriche della bacca e per la produzione di uva/ceppo, quest'ultima variata tra i 23,03 kg del controllo lavorato ed i 25,76 kg dell'inerbimento naturale. La colorazione della buccia della bacca ha presentato invece delle differenze statisticamente significative: il valore della luminosità (L*) nelle tesi inerbite con trifoglio (41,59) e festuca (41 ,03) è stato superiore rispetto all'inerbimento naturale (39,63) ed al controllo lavorato (40,41). La saturazione (C*) è risultata significativamente più bassa nel controllo lavorato rispetto alle tesi inerbite , mentre la tinta (h°) non ha mostrato differenze tra le tesi. L'inerbimento non ha influito, in generale, sulla consistenza della bacca ed anche per gli altri parametri chimici (°Brix, pH, acidità titolabile) non sono state rilevate differenze degne di rilievo tra i dati ottenuti per le diverse tesi
Living Mulch with Subterranean Clover (Trifolium subterraneum L.) Is Effective for a Sustainable Weed Management in Globe Artichoke as Annual Cropping in Puglia (Southern Italy)
No full textItaly represents the world leading producer of globe artichoke, and Puglia (Southern Italy) supplies about one-third of the nation’s production. In this research, the influence of mulching (both living mulch with subterranean clover and biodegradable mulch film) on both weed infestation and globe artichoke yield in comparison with conventional tillage was evaluated. Two globe artichoke genotypes (Capriccio—hybrid cultivar—and Brindisino—sanitized local variety) were tested in an open field located in Puglia. The following parameters were evaluated: weed infestation, yield and canopy of globe artichoke, and biomass and canopy of subterranean clover. Yield of globe artichoke (on average 16 buds plant−1) was not influenced by soil management although the total weed cover was lower by using conventional tillage. Mean canopy of T. subterraneum was higher under Brindisino (about 65%) in comparison with Capriccio (about 45%). Dry weight was higher in Brindisino (about 12 g m−2) than Capriccio (about 6 m−2) without differences among soil management treatments. Subterranean clover showed a good ability to control weed cover especially under Brindisino genotype (weed infestation always less than 1%) highlighting its particularly suitability for local varieties of globe artichoke instead of hybrid cultivars (weed infestation up to 5%). In conclusion, the results of this study suggest the positive effects of living mulch with subterranean clover for a sustainable weed management in globe artichoke as annual cropping in Puglia
Pietro Verri’s Contribution to the Economic Theory of the 18th Century: Commercial Society, Civil Society and Governance of the Economy
No full text'Count Pietro Verri (1728-97) - Schumpeter writes (History, p. 178) - - would have to be included in any list of the greatest economists'. Within the Milanese school, he certainly stands out, alongside with Cesare Beccaria, during one of the most interesting periods from a history of analysis point of view. Luigi Cossa's famous introduction to the study of political economy rates Pietro Verri to be inferior to Beccaria in ingenuity and scientific cultivation, but greatly to be ahead of him as an economist.1 This judgement by Cossa, in particular, seems to echo the relative position of the two men in the history of ideas, particularly after Beccaria's rise to fame with a book - On crimes and punishments - which had in fact been largely inspired by Verri himself and defended by him.2 It is proposed in the present paper to revisit some of the basic tenets of Pietro Verri's political economy, with more in view than dwell on specific intuitions and theorems: namely relate those to Verri's own - quite original - conception of the economy. The scholarly work of Pietro Verri - with a special reference to his Meditazioni sulla economia politica of 1771 - provides the first systematic contribution stemming from the quarters of Lombard enlightenment in the field of political economy, especially so if one considers that Cesare Beccaria's parallel work - namely his Elementi di economia pubblica, conceived and drafted at the same time as Verri's Meditazioni - would only be published posthumously several years later. From the vantage point afforded by Verri's political economy, we gain a considerably attractive view of the most significant elements and characteristic concepts of Lombard enlightenment during the latter half of the 18th century; Verri, moreover, as we shall see, builds on a number of them in a new and original way. This paper is aimed at discussing Verri's political economy mainly along two distinct, but related, lines. In the first place the conception of commercial society is considered such as it is treated by the author particularly in his Meditazioni. In this perspective the analysis of such issues as competition and the market or money and taxation occupy a central place. Secondly it will be necessary to emphasise that Verri's approach has little to do either with forms of pure economics on one side - largely yet to be born throughout the 18th century - or, on the other side, with such conceptions of the polis - contrariwise well alive among his own contemporaries - as are founded on a sovereign authority conceived to be situated above the law. What Verri's political economy ultimately amounts to is an economic conception of civil society. The latter has natural strong connections with his own fact-mindedness - emphasised by Schumpeter - as well as with his deep practical involvement in administrative affairs and in the reforming process taking place during the latter half of the 18th century in Milan. In our view, a thorough investigation along the mentioned lines is the precondition for an understanding of the intellectual stature and of the scholarly contribution of Pietro Verri. His main ground is distinctly analytical and only by appreciating his analysis is it possible to shed light on the meaning and intellectual significance also of his practical contributions. Moreover Verri's pronouncements on the criticism of despotic government, the relevance of intermediate powers or bodies and on multiple levels of governance will be examined in a new and original light, showing how close they are to the gist of his analysis.
Morphological characteristics of different mastic tree (Pistacia lentiscus L.) accessions in response to salt stress under nursery conditions
No full textBackground and Objective: Pistacia lentiscus L. (Anacardiaceae mastic tree or lentisk) is a bush playing an important role in the Mediterranean maquis ecosystem. For this purpose, a study on different accessions of mastic tree was carried out in Southern Italy to define the variability of characters related to morphology and survival under salt stress conditions. Methodology: This was study evaluated under nursery conditions the growing responses of 10 accessions of P. lentiscusto 6 different levels of salinization obtained by adding 0, 200, 400, 600, 800 and 1000 g of salts 100 L-1 of substrate, respectively. The following parameters were recorded; plant height, survival of plants and total root length, total biomass, number of leaves per plant and leaf area. Results: The results showed that P. lentiscuscan well tolerate salt at high concentrations when grown under nursery conditions. Furthermore, among the investigated germplasm, a different plant accessions response to salt stress was observed. Conclusion: Thus, by identifying of mastic tree accessions more tolerant to salty soil and the revegetation of degraded agricultural lands can be attained
Use of sensors for the management of the irrigation in a table grape vineyard with a living mulch
No full textLa figura dello scrittore suicida e il tedio della vita in Cesare Pavese
No full textDer Autor und das Thema des Selbstmordes in seinen Werken.
Der Selbstmord des Autors.
Cesare Pavese, seine Persönlichkeit, sein Lebensüberdruss, sein Selbstmord.
Das Tagebuch von Cesare Pavese und seine Briefe.The author and the subject of suicide.
The suicide of the author.
Cesare Pavese, his character, his weariness of life, his suicide.
The diary of Cesare Pavese and his letters.eingereicht von: Sonnweber IngeborgMasterarbeit Universität Innsbruck 201
La figura dello scrittore suicida e il tedio della vita in Cesare Pavese
No full textDer Autor und das Thema des Selbstmordes in seinen Werken.
Der Selbstmord des Autors.
Cesare Pavese, seine Persönlichkeit, sein Lebensüberdruss, sein Selbstmord.
Das Tagebuch von Cesare Pavese und seine Briefe.The author and the subject of suicide.
The suicide of the author.
Cesare Pavese, his character, his weariness of life, his suicide.
The diary of Cesare Pavese and his letters.eingereicht von: Sonnweber IngeborgMasterarbeit Universität Innsbruck 201
La figura dello scrittore suicida e il tedio della vita in Cesare Pavese
No full textDer Autor und das Thema des Selbstmordes in seinen Werken.
Der Selbstmord des Autors.
Cesare Pavese, seine Persönlichkeit, sein Lebensüberdruss, sein Selbstmord.
Das Tagebuch von Cesare Pavese und seine Briefe.The author and the subject of suicide.
The suicide of the author.
Cesare Pavese, his character, his weariness of life, his suicide.
The diary of Cesare Pavese and his letters.eingereicht von: Sonnweber IngeborgMasterarbeit Universität Innsbruck 201
Cesare Brandi's Theory of Restoration and Azulejos
No full textThough Cesare Brandi, author of the capital "Theory of Restoration" never mentioned glazed tiles in the main core of his work, his theory applies generally to art heritage (both narrative art and architecture). The communication is a theoretical exercise on the restoration of azulejo panels, particularly the treatment of lacunae, at the light of Cesare Brandi's principles.809ppThe Proceedings were published as a CD and at the moment of writing are available through the bookshop of LNEC.DM/NPC2009April 15-16, 200
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