Influence of Sitobion avenae Fabricius, 1775 Aphid and Some Insecticides on Both Content of and Ratios between Photosynthetic Pigments in the Leaves of Three Barley Cultivars **Agricultural | пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ Sitobion avenae Fabricius, 1775 пїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ
2013
Maneva, V., Institute of Agriculture, Karnobat (Bulgaria) | Lecheva, I., Agricultural University, Plovdiv (Bulgaria)
Investigation is the influence of Sitobion avenae Fabricius, 1775 aphid and insecticides Furi 10 EC пїЅ1 пїЅ 12.5 ml/da and Aktara 25 VG пїЅ2 пїЅ 8 g/da on contents and ratios between photosynthetic pigments in the leaves of three barley cultivars пїЅ Emon, Veslets and IZ Bori. It was found that the extent of damage to plants is dependent on the density of the aphids and the type of the used insecticide, as well as the species and varietal tolerance to the host. Of the investigate of barley variety, IZ Bori is the most resistant to attack by the leaf aphids and application of insecticides пїЅ1 and пїЅ2.
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