Wheat field earthworms under divergent farming systems across a European climate gradient.

Earthworms are a key faunal group in agricultural soils, but little is known on how farming systems affect their communities across wide climatic gradients and how farming system choice might mediate earthworms' exposure to climate conditions. Here, we studied arable soil earthworm communities on wheat fields across a European climatic gradient, covering nine pedo-climatic zones, from Mediterranean to Boreal (S to N) and from Lusitanian to Pannonian (W to E). In each zone, 20-25 wheat fields under conventional or organic farming were sampled.

Molecular diversity of populations from Benin, based on ITS1 rDNA and COI mtDNA.

In Benin, yam production continues to face numerous production constraints, including yield and quality reduction by . Implementation of efficient management techniques against this pest requires an improved understanding, including at the molecular level, of the pest. The current study aimed at identifying the spp.

Diversity of Root-knot Nematodes Associated with Tubers of Yam ( spp.) Established Using Isozyme Analysis and Mitochondrial DNA-based Identification.

The root-knot nematodes (RKN), spp., represent an important threat to yam ( spp.) production in West Africa.

Effect of several centrifugal pump passages on the viability and activity of Steinernema carpocapsae, a biopesticide.

The effect of several passages through a centrifugal pump on the viability and activity of Steinernema corpocapsoe was investigated. A tendency of reduced viability was detected after 10 passages through the centrifugal pump, but the difference was not statistically significant. Activity decreased significantly from 91.

Species of Heterodera cysts in cereal fields in Flanders.

Heterodera is a genus of cyst-forming nematodes, including the cereal cysts which can provoke yield reductions in grain crops. As little is known about the occurrence of these cysts in Belgian grain fields, a survey was organized, starting in Flanders. Soil samples were taken from 50 fields where cereals are grown in rotation with mainly beet, potato and vegetables.