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Effect of intercropping of pea with tansy phacelia and white mustard on occurrence of pests

Andrzej Wnuk

Department of Plant Protection
Agricultural University
29 Listopada 54, 31-425 Kraków, Poland

In the years 1995-1997 the effect of tansy phacelia and white mustard sown between rows of three cultivars of Pisum sativum L. on the occurrence of pea pests was estimated. In the case of pea weevils (Sitona sp.) its notches were counted in the four-leaf phase. For the remaining pests the presence of pea aphid (Acyrthosiphon pisum) on the plants, of pea thrips (Kakothrips robustus) on flowers and infestation of pea pods by the pea moth (Laspeyresia nigricana), and pea seeds by the pea beetle (Bruchus pisorum) were observed.

It was found that intercropping of pea with tansy phacelia and white mustard had the effect of decreasing the pea thrips population in comparison with monoculture. A similar effect was observed for feeding of the pea weevil on the leaves, although the differences were less noticeable. Intercropping had no impact on the occurrence of the pea aphid, pea moth, and pea beetle.

Wnuk A., 1998. Effect of intercropping of pea with tansy phacelia and white mustard on occurence of pests. Folia Horticulturae 10/1: 67-74.