Search results for " organic agriculture"
showing 5 items of 5 documents
Strategie di controllo di Bactrocera oleae (Rossi) nell’olivicoltura biologica da olio e da tavola.
2010
I buoni risultati ottenuti nell’olivicoltura biologica da olio sono legati alla raccolta anticipata che limita le infestazioni tardive di Bactrocera oleae (Rossi) e gli effetti negativi delle infestazioni in atto. Molto utilizzate per il controllo della mosca sono le catture massali. L’infestazione dannosa registrata nei due mesi precedenti la raccolta risulta strettamente correlata alla qualità dell’olio, mentre non lo è l’infestazione totale alla raccolta. Gli insetticidi consentiti nell’olivicoltura biologica sono molto poco utilizzati. Nelle situazioni di forte pressione della mosca soltanto i trattamenti con argille e prodotti del rame riescono a mantenere bassi i livelli d’infestazion…
Rearing of Prays citri on callus derived from lemon stigma and style culture
2000
A new method for rearing the citrus flower moth (Prays citri Mill.) (Lepidoptera, Yponomeutidae) on lemon [Citrus limon (L.) Burm.] callus is reported. In the present research callus (an undifferentiated mass of plant cells that can be grown under sterile conditions on an artificial medium in vitro) was induced from lemon stigma and style explants cultured on Murashige and Skoog (MS) medium supplemented with 500 mg l -1 malt extract, 13.3 μM 6-benzylaminopurine, and 146 mM sucrose. Also somatic embryogenesis and plant regeneration were obtained from the cultures of styles and stigmas of lemon. Adults were obtained from larvae on infested flowers collected in the field. Different oviposition…
Yield And Competitive Ability Against Weeds Of Mixtures Between Old And Modern Wheat Varieties
2018
Durum wheat is the keystone of the agro-ecosystems in the arable land of the Mediterranean environments and an important part of its area falls within organic farms. For this crop competition exerted by weeds for the use of resources (natural and auxiliary) can determine drastic yield and quality reductions (Ruisi et al., 2015). In organic farming such critical issue is often addressed through a remodelling of several techniques such as soil tillage management, sowing time, plant density and genotype choice. With regard to the latter, there is a growing interest by organic farmers towards the old varieties as they, compared to the modern varieties, have a definitely greater competitive weed…
Early Sowing Allows To Reduce Weed Pressure In No-Till Organic Durum Wheat Production
2018
In organic farming, the adoption of the conventional tillage (CT) technique is considered by many farmers to be necessary to control weeds. Such tillage system, in fact, permits to bury weed seeds deep in the soil by means of soil inversion with moldboard plowing and to eliminate the weed plants that gradually emerge by means of the secondary tillage operations. However, it is also true that intensive tillage progressively reduces the soil organic matter content and the stability of soil aggregates, thus increasing the risk of soil erosion (Six et al. 2000). This is in contrast with one of the basic principles of organic agriculture, which is the conservation of soil fertility. Alternativel…
Humusica 2, article 19: Techno humus systems and global change - Conservation agriculture and 4/1000 proposal
2018
International audience; Philosophy can overlap pedology. It is not casual that life begins and finishes in the soil. We separated the concepts of Humipedon, Copedon and Lithopedon. Some sections were dedicated to the founders of the movement for a new type of agriculture (agroecology). They simply proclaim to accompany the process of natural evolution instead of spending a lot of energy in hunting competitor organisms with pesticides or boosting the soil with mineral fertilisation and tillage. The core of the article is built on a biological concept of the soil and shows researches supporting this view. After pointing to the soil structure and illustrating its natural genesis, explaining wh…