Plant Pathology, Disease Control of Fruit and Vegetables

Essential oils for rust control on coffee plants

    Rust is considered the most important disease in coffee because it causes severe defoliation in plants and, consequently, reduction in productivity. This study evaluated the in vitro effect of essential oils of cinnamon, citronella, lemongrass, clove, tea tree, thyme, neem and...
Ricardo Borges Pereira
Gilvaine Ciavareli Lucas
Fabiano José Perina
Eduardo Alves
Ciência e Agrotecnologia

Validación de un Sistema de Manejo Integrado de Plagas y Enfermedades en Huertos de Manzano [Malus sylvestris (L.)Mill. var. domestica (Borkh.) Mansf.] en Chihuahua, México

Durante los años 1999 y 2000, se validó en área comercial de tres huertos con los cultivares Golden y Red Delicious el sistema de manejo integrado de plagas (MIP) en manzano, desarrollado por Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (...
Manuel Rafael Ramírez Legarreta
Juan Luis Jacobo Cuéllar
Mario René Ávila Marioni
Roberto Gutiérrez González
Revista Mexicana de Fitopatología

Tomato Diseases Gray Mold (Botrytis cinerea)

“Ghost spots” appear on fruits after periods of prolonged high humidity. These superficial spots have a pale halo with a brown to black pinpoint spot in the center. On unripe fruit, the halo is pale green or silvery, and generally the tissue inside the halo is paler green. On ripe...
Ray Cerkauskas
AVRDC – The World Vegetable Center

Tomato Diseases Gray Leaf Spot (Stemphylium solani, S. lycopersici)

Foliage of plants from seedlings to mature plant stage is affected. Brown to black specks appear on both the young and older leaves. The lesions expand slowly into 1- to 2-mm-diameter round spots that remain brown or develop a gray center surrounded by a yellow area. Sometimes the center of the...
Ray Cerkauskas
AVRDC – The World Vegetable Center

Midwest Small Fruit and Grape Spray Guide 2012

    The pest management recommendations in this guide have been formulated to provide you up-to-date information on pesticides and their applicability to your problem. It is suggested that you use this information to set up your own spray program. You should keep accurate records of...
University of Illinois
Iowa State University
Kansas State University
University of Kentucky
University of Missouri
Missouri State University
University of Nebraska
Ohio State University
Oklahoma State University
Purdue University
West Virginia University
University of Wisconsin
Midwest Fruit Workers Group

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