TY - JOUR
T1 - Interaction between two synthetic pyrethroids and the spread of two non‐persistent viruses in cowpea
AU - ROBERTS, JULIA M. F.
AU - HODGSON, C. J.
AU - Jackai, Louis E
AU - THOTTAPPILLY, G.
AU - SINGH, S. R.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - The effectiveness of the synthetic pyrethroids deltamethrin and lambda‐cyhal‐othrin in preventing (i) aphid colonisation of four cowpea cultivars with different levels of aphid resistance and (ii) the introduction and subsequent spread of cowpea aphid‐borne mosaic virus and cucumber mosaic virus was investigated under tropical field conditions. Sprays of these pyrethroids eight days apart prevent aphid colonisation and within crop spread of virus by the colonising Aphis craccivora. However, neither deltamethrin nor lambda‐cyhalothrin prevented the initial introduction of virus into the cowpea crop and, when incoming alate incidence was high, virus incidence was higher in the sprayed than in the unsprayed plots. In addition, the degree of aphid resistance of each cultivar affected secondary virus spread within the crop, with greatest spread in the most resistant cultivar. Copyright © 1993, Wiley Blackwell. All rights reserved
AB - The effectiveness of the synthetic pyrethroids deltamethrin and lambda‐cyhal‐othrin in preventing (i) aphid colonisation of four cowpea cultivars with different levels of aphid resistance and (ii) the introduction and subsequent spread of cowpea aphid‐borne mosaic virus and cucumber mosaic virus was investigated under tropical field conditions. Sprays of these pyrethroids eight days apart prevent aphid colonisation and within crop spread of virus by the colonising Aphis craccivora. However, neither deltamethrin nor lambda‐cyhalothrin prevented the initial introduction of virus into the cowpea crop and, when incoming alate incidence was high, virus incidence was higher in the sprayed than in the unsprayed plots. In addition, the degree of aphid resistance of each cultivar affected secondary virus spread within the crop, with greatest spread in the most resistant cultivar. Copyright © 1993, Wiley Blackwell. All rights reserved
KW - A. citricola
KW - A. craccivora
KW - aphids
KW - cowpeas
KW - non‐persistent viruses
KW - plant resistance
KW - Synthetic pyrethroids
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U2 - 10.1111/j.1744-7348.1993.tb04014.x
DO - 10.1111/j.1744-7348.1993.tb04014.x
M3 - Article
SN - 0003-4746
VL - 122
SP - 57
EP - 67
JO - Annals of Applied Biology
JF - Annals of Applied Biology
IS - 1
ER -