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Primi risultati di prove su differenti modalità di gestione delle infestanti nel pescheto (Prunus persica (L.) Batsh
No full textResults of a chemical weed control trial in an oil olive orchard
No full textResults of a chemical weed control trial in ten years old oil olive orchard (cv Nociara), ocated at Francavilla Fontana (Brindisi) in southern Italy are reported. The aim of the trial was to test the effectiveness of some herbicide treatments. Thesis compared were: a) pre-emergence distribution of azafenidin (an active ingredient that isn't yet registered in Italy) at different doses (200-240 and 480 g/ha of a.i.) and by one or two treatments; b) glyphosate (720 g/ha of a.i.) applied in post-emergence, alone and mixed with azafenidin (200 g/ha of a.i.); c) oxyflurfen (600 g/ha of a.i.) in a single pre-emergence application; c) tilled control; d) weedy control. Azafenidin showed a high and lasting level of efficacy, at all the doses, applied by only one treatment also, in the control of Anthemis arvensis L., Capsella bursapastoris (L.) Medicus., Conyza canadensis (L.) Cronq., Diplotaxis erucoides (L.) DC., Lolium spp., Poa spp., and Sonchus oleraceus L., but wasn't effective against Stellaria media L.; regarding the last species, the best result was obtained using oxyfluorfen that showed the same activity of azafenidin, applied alone or mixed to glyphosate. All herbicide treatments tested gave statistically no different crop yield than tilled control, but higher than weedy control, and showed a perfect selectivity
Ground cover management strategies in an Apulian oil-producing olive grove: Agronomic and ecological assessment proposals
No full textSeveral studies have pointed out that ground flora in olive groves, such as in any orchard, should ideally combine adequate positive effects on the agro-environment with only marginal negative competitive effects on the olive plants. This paper reports the results of an experiment carried out in an irrigated olive orchard (cv. Leccino), located in the area of Savelletri, Puglia (southern Italy), regarding the effects of ground flora as a consequence of different management techniques. An aggregate index is proposed, able to provide a comprehensive evaluation of flora from both an ecological and agronomic point of view. Four different weed control strategies were compared: A) seeding, every other year, of a cover crop (Vicia sativa L.) chopped in springtime; B) weed control using a mixture of a systemic herbicide and a residual herbicide; C) weed control using a systemic herbicide only; D) chopping. The results revealed that the different management practices largely influenced the ground cover values in each study year, but not the yield. Ground cover features, assessed both from an agronomic and ecological point of view varied in particular, as was well reflected by the applied index, which proved to easily and effectively describe the flora features in different plots
Effectiveness and selectivity of some post-emergence herbicides on early weed control in cool season turfgrass
No full textMulching with almond hull and olive leaves for weed control in fennel (Foeniculum vulgare Mill.) cultivation and flower beds
Full text linkWeeds are a major problem in cropping systems and in urban areas. The aim of this study was to assess the effectiveness of organic mulching with olive leaves and almond hulls to control weeds in fennel (Foeniculum vulgare Mill.) and in flower beds (urban areas). A 3-cm thick layer of olive leaves or almond hulls was applied as mulching material in fennel. Control consisted of both an unmulched treatment and a weed free control. Moreover, in a flower bed of a railway station, plots mulched with 3 cm layer of olive leaves and almond hulls were compared with an unmulched treatment. Weed infestation was evaluated and the weights of the whole plant and of the marketable part of fennel (grumolo) measured. Mulching with olive leaves and almond hulls reduced weed infestation in both vegetable crop and flower beds. However, olive leaves reduced the weights of the whole plant and of the grumolo. The adoption of almond hulls and olive leaves as organic mulches could be an effective strategy for weed control. Further investigations should be carried out to assess whether the effectiveness of these mulching materials is mainly due to a mechanical activity or allelopathic compounds also play a significant role in weed suppression
Strategie di diserbo in un oliveto secolare del sud-italia: primi risultati dell’utilizzo di “indici integrati” per la valutazione qualitativa della flora infestante
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