144 research outputs found
Editoriale
Editoriale al primo numero di Cartagine. Studi e ricerche (CaSteR) rivista della Società Scientifica 'Scuola Archeologica Italiana di Cartagine' edita dll'Università degli studi di Cagliar
Il Più antico miliario della Sardegna dalla strada <i>a Tibulas Sulcos</i>
Il miliario oggetto d'indagine costituisce una preziosa conferma di alcuni essenziali aspetti topografici, fissando il percorso tra Bosa e Cornus decisamente più ad occidente ed in prossimità dela costa rispetto alla strada attuale, che lambisce il Montiferru; inoltre consente di attribuire all'attività del proconsole M. Cornuficius la costruzione di un tratto di strada, che appare al momento un segmento della litoranea occidentale, concepita già in età punica al servizio delle principali colonie fenicio-puniche della Sardegna
Influenza del Potyvirus latente del carciofo «Spinoso sardo» sulla produitività delle piante in pieno campo: 2. risultati relativi al secondo anno di impianto
In order to evaluate the influence of the artichoke latent Potyvirus (ALV) on plant productivity, a comparative
field trial between virus-freed by meristem-tip culture and naturally Infected «Spinoso sardo» plants has
been repeated for the second year in Sardinia.
On the whole the results corroborate those of the first year: the latent infection doesn't affect the earliness
and the number of heads per plant; whereas it negatively influences the weight, the diamater and the stem
length of the heads
Ulteriori esperienze di lotta contro il «marciume dei capolini» del carciofo da <i>Botrytis cinerea</i> Pers.
During the winter of 1982 field control trials were carried out against head rot of globe artichoke
(Cynara scolymus L.) induced by Botrytis cinerea Pers. Treatments bega n when first symptoms
appeared and were repeated every 10 days. for 4 times in alI.
Among tested compounds the best results were given by dicarboximide derivatives (vinchlozolin,
procymidox, iprodione, dichlozolinate) and by prochloraz while less satisfactory appeared dichlofluanid
and a mixture of captafol + folpet. No adverse side effect on treated plants was observed
with any fungicide
Reperimento del virus dell'«arricciamento maculato» il del carciofo (AMCV) in Sardegna
A virus disease of «Masedu» of artichoke has been observed, in a serious form, in southern Sardinia
(Italy). Affected plants are stunted with leaves heavily mottled, crinkled and laciniated.
On the basis of the herbaceous hosts reactions, physical properties «in vitro», spectrophotometry,
electron microscopy and serology, the virus recovered from diseased plants is identified
as an isolate of AMCV, belonging to «Tombusvirus» group, serologically undistinguishable from
the italian type isolate
Osservazioni sulla patogenesi e sulla epidemiologia dell'«avvizzimento» del pomodoro (<i>Lycopersicum esculentum</i> mill.) da <i> Alternaria alternata</i> f. sp. <i>Lycopersici</i> grogan, kimble e misaghi
Alternaria alternata f. sp. Lycopersici Grogan, Kimble and Misaghi is the causal agent of a serious wilt of
greenhouse «Earlypak» tomato in Sardinia (Italy).
In phytopathological tests this cv. displayed a very high susceptibility both to direct infection and to metabolites
effect of the fungus; instead some newly introduced tomato hybrids proved, some more some
less, all resistent.
The possible infection sources have been found, and so the ways of disease spreading were examined.
Finally, some measures in order to prevent the disease are suggested
L' «Avvizzimento» del pomodoro (<i>Lycopersicum esculentum</i> Mill.) causato da <i>Alternaria alternata</i> f. sp. <i>Lycopersici</i> Grogan, Kimble e Misaghi
A serious disease of tomato cultivar « Early pak 7 » for fresh-market production found in several
greenhouses in southern Sardinia (ltaly) is described. Plants are affected in all stages of
development with local lesions at the foot, and with typical symptoms of a vascular disease. The
causal agent has been identified as Alternaria alternata f. sp. lycopersici Grogan, Kimble and Mis.
Morphological and physiologlcal characters of the fungus grown in pure culture are described,
and also data on pathogeniclty and host-specificity are reported. Laboratory cultural and crossinfection
tests showed that this fungus strongly resembles to A. alternata f. sp.lycopersici
isolated in California (USA) as « tomato stem canker » agent
Il Risanamento degli agrumi dal viroide dell'Exocortite mediante il microinnesto
Nearly all old line citrus trees growing in Sardinia (Italy) are infected by citrus exocortis
viroid (CEV).
The technique of shoot-tip grafting has proved effective in recovering various citrus cultivars
free of this viroid
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