Temperature impact on distribution of entomological damage in Norway spruce Picea abies (L.) Karst. young forest stands

• Published in: Mezzinatne (Latvia) Vol. 25; no. 58
• Main Authors: Luguza, S., Latvia Univ. of Agriculture, Jelgava (Latvia). Forest Faculty, Miezite, O., Latvia Univ. of Agriculture, Jelgava (Latvia). Forest Faculty, Liepa, I., Latvia Univ. of Agriculture, Jelgava (Latvia). Forest Faculty, Indriksons, A., Latvia Univ. of Agriculture, Jelgava (Latvia). Forest Faculty, Ruba, J., Latvia Univ. of Agriculture, Jelgava (Latvia). Forest Faculty
• Format: Journal Article
• Language: English
• Published: 2012
• Subjects: DANOS A LAS PLANTAS; DEGAT A LA PLANTE; DINAMICA DE POBLACIONES; DISTRIBUCION GEOGRAFICA; DISTRIBUTION GEOGRAPHIQUE; DYNAMIQUE DES POPULATIONS; FOREST PESTS; GEOGRAPHICAL DISTRIBUTION; http://www.fao.org/aos/agrovoc#c_12103; http://www.fao.org/aos/agrovoc#c_32596; http://www.fao.org/aos/agrovoc#c_35703; http://www.fao.org/aos/agrovoc#c_5083; http://www.fao.org/aos/agrovoc#c_5729; http://www.fao.org/aos/agrovoc#c_5852; http://www.fao.org/aos/agrovoc#c_6111; http://www.fao.org/aos/agrovoc#c_6513; http://www.fao.org/aos/agrovoc#c_7657; INSECTE NUISIBLE; INSECTOS DANINOS; INVESTIGACION; LATVIA; LETONIA; LETTONIE; ORGANISME NUISIBLE A LA FORET; PEST INSECTS; PICEA ABIES; PLAGAS FORESTALES; PLANT INJURIES; POPULATION DYNAMICS; RECHERCHE; TEMPERATURA; TEMPERATURE
• ISSN: 1407-270X

In frames of research there is sanitary condition of Norway spruce Picea abies (L.) Karst. young forest stands evaluated in Zemgale, Kurzeme and Vidzeme regions. Main forest pests observed in sample plots in different parts of Latvia are spruce bud scale Physokermes piceae Shrnk., eastern spruce gall aphis Sacchiphantes abietis L. and bud moth Cephaleia abietis L. Proportion of occurrence of different damage is significantly different among regions as well as in separate forest stands. The most damage in inspected Norway spruce young forest stands is done by spruce bud scale Physokermes piceae Shrnk. (Fig. 1) as its occurrence in several stands is 0–90%. Proportion of pest occurrence (18%) and proportion of damage intensity (6%) is found in Zemgale region but the lowest – in Vidzeme region.