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Baris on rape: to define a strategy for control


, : Baris on rape: to define a strategy for control. Oleoscope ( 8): 16-17

In laboratory tests, adults of Baris sp. were treated topically with 8 insecticides, of which quinalphos and Decis gave insufficient control. In a cage experiment with the same compounds, only Dursban successfully controlled the pest and it was concluded that the insects were sheltered by vegetation from the insecticides.

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Related references

Obarski, J., 1968: Baris coerulescens Scop. and other species of Baris as new pests in winter rape. This new pest of winter rape in Poland is described and its economic importance and control discussed.

Obarski J., 1968: Baris coerulescens and other species of baris as new pests in winter rape d. Roczniki Nauk Rolniczych Seria A Produkcja Roslinna 93(4): 671-683

Koubaiti, K.; Phalip, M.; Lerin, J., 1995: Baris of the Cruciferous: Determination criterium of the larvae and developmental biology of the dominant species on oilseed rape, Baris coerulescens (Scopoli) (Coleoptera, Curculionidae). Baris coerulescens (Scopoli), B. laticollis (Marsham) et B. quadraticollis Boheman are endophyte pests of cruciferous tap roots. Larvae of the species, which can be found in the same plant, can be sorted by details found on the head capsules, whic...

Badenhausser, I.; Lerin, J., 1999: Sampling for estimating density of Baris coerulescens on oilseed rape. Sampling plans based on 6 years of surveys in France were devised to estimate the mean number of immature insects per plant (eggs, larvae, pupae). A sequential sampling plan based on insect counts in the roots provided a reasonable tool for estima...

Lerin, J.; Koubaiti, K., 1991: Biology of Baris coerulescens Scop., a pest of winter rape. Baris coerulescens was studied in rape fields in France in 1979-86 and 1988-89. The pest was first found in the rape fields at the beginning of April, and had 1 generation/year. There were 4 larval instars. In the laboratory, females produced up t...

Lerin, J., 1999: Modeling winter oilseed rape plant infestation by Baris coerulescens. The total number of immature B. coerulescens individuals per rape plant (egg to pupa) was assessed throughout the whole reproductive period during a 6-year study at 3 locations in France. Total insect density, expressed as the cumulative proportio...

Obarski, J., 1968: The green weevil-B. coerulescens and other species of Baris as new pests of winter rape. Studies were carried out in eastern Poland in 1964-65 on the infestation of winter rape by Baris coerulescens (Scop.) and other species of this genus. The larvae, pupae and adults of B. coerulescens are described, and details of its bionomics are...

Badenhausser, I.; Lerin, J., 1999: Binomial and numerical sampling for estimating density of Baris coerulescens on oilseed rape. Baris coerulescens Scopoli is a pest attacking the tap root of oilseed rape and other cruciferae. Sampling plans based on 6 yr of surveys were devised to estimate the mean number of immatures per plant. When the required precision (SE/x) is around...

Lerin, J.; Koubaiti, K., 1997: Modeling winter oilseed rape plant infestation by Baris coerulescens (Coleoptera: Curculionidae). Baris coerulescens Scopoli is a pest attacking the tap root of winter oilseed rape. Females lay eggs in the root grown for > 3 mo. The slow accumulation of eggs in plants poses problems in defining cohorts for modeling larval development under...

Bonade-Bottino, M.L.rin, J.Z.ccomer, B.J.uanin, L., 1999: Physiological adaptation explains the insensitivity of Baris coerulescens to transgenic oilseed rape expressing oryzacystatin I. Larvae of Baris coerulescens Scop. (Coleoptera: Curculionidae) exhibit a complex array of gut proteinase activities comprising cysteine and serine proteinase. The major cysteine proteinase activity, showing an optimum at pH 6.0, corresponds to at...