Summary:

The sprinkling irrigation and varied nitrogen fertilisation of millet cv. Gierczyckie on insects with the hemipteroidal mouthpart occurrence were inves-tigated. The entomological experiments were conducted in 2005 and 2006 in Kruszyn Krajeński near Bydgoszcz. The largest group of insects were Thysanoptera and Hemiptera. When we used the middle rate of nitrogen fertilization, Thysanoptera was significantly less numerous. They preffered the irrigation plants. From Thysanoptera the most ab-undant were Phlaeothripidae. Number of Hemiptera was significantly less than Thysanoptera. When the high rate of nitrogen fertilization was used, the numer of Hemiptera was high, too. They were represented by Cicadellidae, Miridae, Aphi-didae and Delphacidae families. Psammotettix alienus Dahlbom. was the most numerous insects from Cicadellidae. The numbers of Macrosteles laevis Ri-baut and Empoasca pteridis Dahlbom was lower. The most frequently caught of Aphididae were the following insects: Sitobion avenae (F.) H.R.L. and Rhopalo-siphum padi L. The usage of irrigation and varied nitrogen fertilization in millet cultivation, affected on numerous of phytophagous insects such as: Lygus ruguli-pennis Popp. and Trigonotylus coelestialium Kirk. First of theirs preffered irri-gation plants with higher rate of nitrogen fertilization.