A weed population survey was carried out to assess the variability in species composition and abundance main coffee production systems regions of Ethiopia. total 168 fields were assessed using a quadrat count systematic sampling technique. Weed evaluated frequency, dominance at each site. We found 98 taxa belonging 35 families, which Asteraceae Poaceae most abundant. The frequent Oplismenus hir...

The nematode Meloidogyne enterolobii (Yang & Eisenback) is one of the main pathogens associated with guava tree (Psidium guajava L.) in northeastern Brazil. Considering frequency which weeds are found fruit production areas and their potential as phytonematode hosts, aim this study was to investigate reaction parasitism M. enterolobii. species evaluated for infection were Acanthospermum his...

Generally, Asteraceae flowers such as chrysanthemums and gerberas, are low ethylene-sensitive do not exhibit petal wilting abscission. However, previous research found that the of dahlia, an member belonging to tribe Coreopsideae, show abscission layer development in petal-ovary boundaries. In this study, we investigated ethylene sensitivity 17 ornamental species different tribes by measuring d...

We present a symbolic analysis of the ephemerizer’s protocol by Radia Perlman, using the CL-Atse tool from the AVISPA’s tool-suite. This protocol allows transmitting a data that will “disappear” (i.e. cannot be retrieved) after a certain time. We show that this protocol is secured for this property plus the secrecy of the data, but is trivially non secured for it’s integrity. Therefore, we pres...

The aim of the study was to evaluate impact European beaver (Castor fiber L.) on vegetation diversity and expansion non-native plant species in areas surrounding watercourses Polesie National Park, Poland. investigation carried out within six inhabited by beavers four comparison where were absent. living park had a small excursion range, reaching maximum distance 25 m from watercourse so that e...

Wood vinegar, a by-product of wood pyrolysis, is mostly discarded. vinegar has phytotoxic effect and could be potentially used as naturally derived herbicide for weed control. The objective this research was to evaluate the efficacy from pyrolysis apple (Malus × domestica Borkh.) tree branch wastes control weeds. concentrations required inhibit 50% motherwort (Leonurus cardiaca L.), redroot pig...

We report the results of a study on potential food sources of the widely distributed Indo-Australian braconid fruit fly parasitoid Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae). Adults sustained life on diets of fruit juice or fruit pulp, a homopteran and its associated honeydew, or extrafloral nectary secretions. Longevities on all these foods and fecundity on fruit juice we...