Plant Pathology, Disease Control of Fruit and Vegetables

Seed treatments and seed plus foliar treatments for control of seed and soil-borne Rhizoctonia

Potatoes with Rhizoctonia solani (black scurf), 2- 5% tuber surface area infected, were selected for the trials. Potato seed was prepared for planting by cutting and treating with fungicidal seed treatments two days prior to planting. Seed were planted at the Michigan State University Muck Soils...
W. W. Kirk
R. L Schafer
P. Tumbalam
Michigan State University

Reduced-risk fungicides help manage brown rot and other fungal diseases of stone fruit

    New reduced-risk fungicides are highly effective in managing both pre- and postharvest diseases of stone fruit crops in California, and they have replaced most previously registered materials. These fungicides have a low impact on the environment, high specificity to target organisms...
James E. Adaskaveg
Helga Förster
W. Doug Gubler
Beth L. Teviotdale
David F. Thompson
California Agriculture

Pre- and Postharvest Treatments to Control Green Mold of Citrus Fruit During Ethylene Degreening

    Two approaches, fungicide applications to trees before harvest and drenching fruit after harvest, were evaluated to minimize postharvest green mold, caused by Penicillium digitatum, particularly among fruit subjected to ethylene gas after harvest, a practice termed “degreening...
J.L. Smilanick
M.F. Mansour
D. Sorenson
Plant Disease

2012 Southeastern Peach, Nectarine and Plum Pest Management and Culture Guide

This guide is to be used only by commercial growers. Pest problems vary across the Southeast. This guide covers multiple states and production areas. Pesticide rates are a guideline. Contents: Effectiveness of disease control materials Peach insecticide and miticide classes, human...
Dan L. Horton
Phillip M. Brannen
University of Georgia

Downy Mildew Look-Alikes

Picture of symptoms similar to Downy Mildew in cucumber and squash.
Mary K. Hausbeck
Michigan State University

Downy Mildew Symptoms

Pictures of Downy Mildew symptoms in cucumber
Mary K. Hausbeck
Michigan State University

Concentrated, low-volume aerial sprays to improve spray distribution in large avocado trees

The avocado industry has comprehensive guidelines for ground-based spray application to avocado orchards, but there are no current guidelines for aerial spray applications. Helicopter-applied deposits from a dilute spray application (600 litres/ha) of copper on a commercial Hass avocado orchard (...
R.E. Gaskin
K.D. Steele
G.S. Elliott
New Zealand Plant Protection

Tomato Diseases: Fusarium Wilt (Fusarium oxysporum f.sp. lycopersici)

First symptoms are yellowing of the foliage, beginning with the lower leaves and working upward. Yellowing often begins on one side of the vine. Infected leaves later show downward curling, followed by browning and drying. The top of the vine wilts during the day and recovers at night, but wilting...
Ray Cerkauskas
AVRDC - The World Vegetable Center

Florida Plant Disease Management Guide: Apple (Malus domestica)

Content: Apple Scab Bitter Rot Black Rot Botryosphaeria Rot/White Rot Cercospora Leaf Spot Crown Gall Fabrea Leaf Spot Fire Blight Fly Speck Mushroom Root Rot Pink Limb Blight Powdery Mildew Rust Sooty Blotch Southern Blight
Mathews L. Paret
Tim Momol
Laura Ritchie
Hank Dankers
University of Florida IFAS Extension

Production of ancho chili graft on criollo de morelos 334 for the control of Phytophthora capsici

Phytophthora capsici is an oomycete that causes losses in the production of chili peppers (Capsicum annuum L.) worldwide. There are currently no varieties of chilies resistant to this pathogen and the chemical products used for its control promotes the development of resistent strains and...
Ma. Rocío García-Rodríguez
Elizabeth Chiquito-Almanza
P. Damián Loeza-Lara
Heriberto Godoy-Hernández
Emiliano Villordo-Pineda
J. Luis Pons-Hernández M.
Martín González-Chavira
J. Luis Anaya-López