1,720,964 research outputs found
Occurrence of boron deficiency on sunflower in central Italy
No full textNel luglio 2000 in due appezzamenti coltivati a girasole (Helianthus annuus L.) e siti in provincia di Ancona, è stata osservata una clorosi alla base delle foglie più giovani seguita da un successivo ingiallimento delle lamine fogliari. Talvolta le foglie apparivano deformate, i loro margini incurvati e necrotici. Sui fusti, più sottili, ed immediatamente al di sotto della calatide, erano presenti piccole screpolature associate all'emissione di secrezioni gommose. Tutti i sintomi osservati corrispondevano ad una boro carenza. Sebbene le analisi fisico-chimiche di campioni di terreno prelevati in entrambi gli appezzamenti abbiano evidenziato un contenuto di boro sufficiente per la normale crescita della pianta, fattori pedologici (suoli franco-sabbiosi con elevato pH e contenuto in CaCO3) e climatici (alte temperature e scarse precipitazioni) potrebbero aver contibuito ad una riduzione nella disponibilità di boro durante il periodo di accrescimento che precede l'inizio della fioritura, quando maggiore è la necessità di questo microelemento
The role of Geomorphology on the Diversification and Distribution of the Landscape at the Natural Reserve of Torricchio Mountain (Central Apennine, Italy).
No full textThe field work and mapping studies carried out in the Natural Reserve of Torricchio mountain were aimed to elict the causal relationship between the vegetation and the complex of edaphic factors. By way of the studies it was possible to distinguish the following types of landscapes. 1 - landscape of summits and cryoplanation terraces ; 2 - landscapes of step slopes; 3 - landscape ofslopes with soil-creep processes, solifiuction lobes and benches; 4 - landscape of slopes with quick mass-movement; 5 - landscape of valleys filled by colluvial-alluvial deposits; 6 - landscape of valleys strongly incised. For each landscape unit the principal physical-chemical characteristics of soil and vegetation are discussed
Renaturalization of a controlled landfill using inert excavation soil and municipal waste compost
No full text
Validation of MACRO-DB computing model to predict the behaviour of pesticides in spinach crops in Italy
No full textThe aim of this research was to validate the MACRO-DB previsional model for pesticide dispersion in soil and groundwater in a particular scenario of Central Italy (Latina, Lazio). The pesticide used for validation was Lenacil, the soil was a Vertic Haplustept and the crop was spinach. The comparison between the experimental and simulated data demonstrated the validity of the MACRO-DB model, which correctly predicted both the Lenacil concentration through the soil profile and in the drainage water
Analisi geobotaniche integrate per l'elaborazione del Piano di gestione naturalistica del Parco naturale regionale del Conero
Full text linkGeobotanical research, realized to support the elaboration of the Park Naturalistic Plan, is presented. Synphytosociological and geosynphytosociological studies have highlighted the dynamic models of botanical landscape and the soil/plant relationship. The integrated study of the landscape allowed to carry out the Vegetation Map and the Landscape Units Map in which it is possible to identify 6 landscape ecological units, deriving from a whole of vegetation series. The integration of this map with the Soils Map will allow to define some multidimensional landscape units to which correspond sets of ecosystems which are related each other through some mechanism. The knowledge of these mechanism could steer us into a most rational management of the territory
Excursion to the Conero regional natural park
Full text linkThe Regional Natural Park of Conero is situated in
the central-eastern part of the Italian peninsula where it
covers an area of about 6,000 ha (Fig. 1). The protected
area extends in a north-south direction for a distance of
about 20 Km, reaching a maximum width corresponding
to Conero Mountain (about 7 Km) and narrowing
towards its northern extremity.The wide floristic and biocoenotic biodiversity which
characterises the area is determined by its central
position with respect to the basin of the Adriatic Sea,
by the height of the Conero promontory, which with its
height of 572 m greatly surpasses the average of the
Italian Adriatic coast, and by the diversity of the
geological, geomorphological and climatic conditions
of the territory enclosed by the Natural Park (Brilli-Cattarini,
1967; Biondi, 1986).The agricultural, timbering and shepherding activities
that were very developed in the past have contributed
in part to the increase in the biodiversity of the territory,
determining a high diversification of the plant landscape
and favouring the development of ecotonal areas. The
abandonment of the agricultural activities in large areas
that followed, and of the timbering and shepherding
activities in almost all of the territory, has determined
the development of the natural dynamic processes of
the recovery of the vegetation
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