The Japanese shore crab Hemigrapsus sanguineus is recorded for the first time from a Black Sea locality: Tomis Marina in Constanţa, Romania. The suggested vector of introduction is as adults in the hull fouling of yachts. The species has not established and salinity requirements for larval development make it unlikely that it will ever establish in the Black Sea.
This study examined the effect of three synthetic fungicide, maneb “Manebe80®” chlorothalonil “Bravo®” and azoxystrobin “Ortiva®” on the incidence of ascochyta blight (AB) of chickpea caused by Ascochyta rabiei using three chickpea germplasm (ILC482, ILC484 and Flip 1025). The results, statisticaly reliable (C.V. less than 20%), indicated the in vitro test of chemical control has significant effect at P0.01, on the mycelial growth of pathogen. All three fungicides caused important MGI% (Mycelial growth inhibition rate), which varied between 30 and 66%. There was a significant action induced by chlorothalonil fungicide (54 – 65%), followed closely by azoxystrobin (46 – 63%) and maneb (30 – 65%). In the in vivo test of chemical control for AB incidence by detached leaves showed a remarkable percentage of reduction in the severity of ascochyta blight varied between 20 and 80%. We noticed that the systemic fungicide like azoxystrobin can reduce the ascochyta blight severity (RDS%), with ranging between 71 and 80%, for other two contact fungicides (chlorothalonil and maneb), the mycelia growth inhibition rate was close to 50% (from 20 to 47%). These results indicated that the systemic fungicides, like azoxystrobin, have a significantly reduced the incidence and development of ascochyta blight disease in the susceptible cultivars (ILC1929, ILC263 and ILC484).
Sobre la presencia de Sobre la presencia de S Caulerpa racemosa Caulerpa racemosa C (Forsskal) J. Agardh (C (Forsskal) J. Agardh (C (Forsskal) J. Agardh ( aulerpales Caulerpales C , Chlorophyta Chlorophyta C ) en la costa de hlorophyta) en la costa de hlorophyta Mostaganemoise (O de Argelia) Mots clés. Algérie, Biomasse, Caulerpa racemosa, espèce invasive, Méditerranée occidentale. Palabras clave. Argelia, Biomasa, Caulerpa racemosa, especie invasora; Mediterráneo occidental.
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