Fibulorhizoctonia psychrophila, causal agent of lenticel spot in pome fruit, rarely detected in Dutch pear and apple orchards

An Investigation of Apple Chlorotic Leaf Spot (ACLSV) and Tomato Ring Spot (ToRSV) in Some Iranian Pear Gardens

Background and Aims: In spite of a long tradition of fruit-tree growing in all provinces of Iran, information on pear (Pyrus communis) tree viruses is scant. In order to identify of the nature of the virus like symptoms and decline in pear trees, we carried out a survey for the occurrence of four important viruses. Materials and Methods: Leaf samples of pear showing virus like symptoms wer...

Particle films for suppression of the codling moth (Lepidoptera: Tortricidae) in apple and pear orchards.

Studies were conducted in 1997 and 1998 to evaluate the effects of three particle film formulations consisting of kaolin and adjuvants on neonate larvae, ovipositing adult females, and eggs of the codling moth, Cydia pomonella (L.). Neonate larval walking speed, fruit discovery rate, and fruit penetration rate on apple host plants coated with particle films were significantly lower than on host...

Alternaria apple fruit spot: New Directions

Pome Fruits — Implementation Leafrollers in Apple

Pandemis Leafroller Study site description. MD as a control for pandemis leafroller (PLR) was evaluated at a single study site in 1992. Six apple blocks (23.6 acres) were treated with Hamaki-con (Biocontrol, Ltd.) dispensers. These dispensers contain ca. 150 mg of Z11-14OAc, which is the main component of the PLR pheromone. Application rates of 250 d/a, 400 d/a, and two treatments of 400 d/a we...

Improvement of the sterile insect technique for codling moth Cydia pomonella (Linnaeus) (Lepidoptera Tortricidae) to facilitate expansion of field application

The codling moth Cydia pomonella (Linnaeus) (Lepidoptera Tortricidae) is a key pest of pome fruit (apple, pear and quince) and walnut orchards in most temperate regions of the world (Barnes 1991; CABI 1995). The moth has followed the spread of the apple tree Malus pumila Miller around the world, and