The influence of the two-spotted spider mite (Tetranychus urticae Koch.) and irrigation on yield of 5-years-old apple trees

• Published in: Acta agrobotanica Vol. 55; no. 2
• Main Authors: Warabieda, W, Olszak, R.W.,Instytut Sadownictwa i Kwiaciarstwa, Skierniewice (Poland)
• Format: Journal Article
• Language: Polish
• Published: 2002
• Subjects: EVALUACION DEL IMPACTO; EVALUATION DE L'IMPACT; http://www.fao.org/aos/agrovoc#c_16196; http://www.fao.org/aos/agrovoc#c_26721; http://www.fao.org/aos/agrovoc#c_37938; http://www.fao.org/aos/agrovoc#c_3954; http://www.fao.org/aos/agrovoc#c_4553; http://www.fao.org/aos/agrovoc#c_4788; http://www.fao.org/aos/agrovoc#c_8488; IMPACT ASSESSMENT; IRRIGATION; MALUS; METHODE; METHODS; METODOS; PESTS OF PLANTS; PLAGAS DE PLANTAS; RAVAGEUR DES PLANTES; RENDEMENT; RENDIMIENTO; RIEGO; TETRANYCHUS URTICAE; YIELDS

The influence of the two-spotted spider mite (Tetranychus urticae) on yield of apple trees was investigated. The experiment was conducted on irrigated and non-irrigatted 5-years-old apple trees of Close and Jonagold cultivars grafted on M. 9. The population size of the pest exceeded four and two tim...