Q. Any idea which insect would window pane a pin oak this time of year? Is it a problem? A. That would be the "oak skeletonizer" (from our University of Missouri publication, common insects, pests on ...

The susceptibility of pear leaf and fruit at their early development stages to Septoria pyricola and the chemical control of the disease were studied. Unfolded or fully expanded leaves and young fruit ...

Alias: The pear leaf blister mite, or pear rust mite. This is such a small pest that it is almost pointless to describe the physical characteristics. It is a small (too small to see with the naked eye ...

Gardening season is in full swing and there are lots of questions out there. Get answers from Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU ...

Q: My beautiful Bradford pear tree has been gradually dropping its leaves all spring and summer. What would cause this and can I do anything to stop it? A: If there are no spots on the leaves and you ...

American Journal of Botany, Vol. 55, No. 8 (Sep., 1968), pp. 975-983 (9 pages) Study of the pear leaf cuticle (Pyrus communis L. 'Bartlett'), in both intact and enzymatically isolated forms, has ...