Détail de l'auteur
Documents disponibles écrits par cet auteur (13)
Ajouter le résultat dans votre panier Faire une suggestion Affiner la recherche Interroger des sources externes
article/chapitre/communication
ouvrage
H. Van Emden, - Editeur scientifique ; R. Harrington, - Editeur scientifique | Wallingford [GBR] : CAB International | 2007
article/chapitre/communication
R. Mcvean ; A. Dixon ; R. Harrington | 1999Regional variation in the number of pea aphids caught in the suction traps of the Rothamsted Insect Survey (RIS) was associated with the proportion of each region under pea crops. The degree of infestation of crops was similar in areas of high a[...]
article/chapitre/communication
K. Ponder ; J. Pritchard ; R. Harrington ; J. Bale | 2000Effects of nitrogen deficiency in hydroponically grown barley seedlings (Hordeum vulgare L.) on the development and reproduction of the aphid Rhopalosiphum padi (L.) (Hemiptera: Aphididae) were investigated. Plant growth was significantly reduce[...]
article/chapitre/communication
C. Rispe ; M. Hullé ; J. Gauthier ; J. Pierre ; R. Harrington | 1998
article/chapitre/communication
G. Howling ; J. Bale ; R. Harrington | 19941. The survival of adult and first-instar Myzus persicae reared at 20-degrees-C and 10-degrees-C was investigated after brief (1 min) exposure in the absence of plant material to temperatures between -5-degrees-C and -25-degrees-C, and extended[...]
article/chapitre/communication
K. Ponder ; J. Pritchard ; R. Harrington ; J. Bale | 2001Electrical penetration graphs (EPGs) were used to examine the probing behaviour of adult apterous Rhopalosiphum padi (Linnaeus) on barley seedlings grown under conditions of nitrogen or water stress. Aphids took significantly longer to reach and[...]
article/chapitre/communication
S. Ward ; S. Leather ; J. Pickup ; R. Harrington | 19981. For a full assessment of explanations for the evolution of host-specificity it is necessary to estimate the probability that a dispersing parasite finds a host. We develop a method of estimating this success rate from samples of dispersing pa[...]
article/chapitre/communication
J. Mann ; G. Tatchell ; M. Dupuch ; R. Harrington ; S. Clark ; H. Mccartney | 1995The effect of wind and rain on initiation of dispersal and subsequent distances moved by apterous Sitobion avenae was quantified in five laboratory experiments. Wind duration and type (steady and gusting), rain duration and intensity, and a comb[...]
article/chapitre/communication
G. Powell ; R. Harrington ; N. Spiller | 1992
article/chapitre/communication
G. Howling ; R. Harrington ; S. Clark ; J. Bale | 1993The Rothamsted Insect Survey has kept records of aerial aphid activity using suction traps since 1965. Previous work has shown that, for certain species, there is a linear relationship between the date of first record in the trap each year and t[...]
article/chapitre/communication
R. Harrington | 1987
article/chapitre/communication
R. Harrington ; G. Tatchell ; J. Bale | 1990
