Turnip Mosaic Virus (TuMV) infects most cruciferous plants, but is most damaging in Chinese cabbage, turnip, mustard, and radish. The most common symptom in these crops is a distinct mosaic of light and dark green colors in the leaves. Depending upon the virus strain and the crop species, necrotic streaks, flecks, or ringspots may also occur. Necrotic spots and ringspots are the primary symptom in common cabbage, but the severity of symptoms is cultivar dependent.
Publisher:
AVRDC – The World Vegetable Center
The guide contains the latest recommendations for insecticides, fungicides, nematicides, and herbicides for commercial apple production. The guide is a collaborative effort by Extension specialists and researchers from land grant institutions in the southeastern United States.
Authors:
Edward J. Sikora
Publisher:
Alabama Cooperative Extension System
Damage Symptoms
Symptoms occur in cabbage and Brussels sprouts. As the heads approach maturity, inner leaves become necrotic along their margin. Margins of one or more leaves turn brown beginning at the leaf pores. The area affected may be a narrow band or involve up to half of the leaf. Symptoms occur at one time and are not progressive. There is no external evidence that the heads are affected by tipburn.
Publisher:
AVRDC – The World Vegetable Center
Mango trees (Mangifera indica L.) are cultivated in many countries of East, South and West Africa. In these countries, mangoes contribute to farmer family diets as well as serving as a cash crop. Mangoes are a delicate fruit and, therefore, sensitive to transport, which limits trade opportunities. However, there is considerable market interest in processed mango—in pulp or dried form.
Common challenges to mango production in Africa
Publisher:
FiBL, Research Institute of Organic Agriculture, Switzerland
The Guide is divided into three sections. The first section provides cultural information and management practices for a number of important vegetable crop groups. For each family, key pests and disease problems are described. Cultural methods and management practices that will help control each problem are listed, as well as materials that may be recommended for use.
Publisher:
Cornell University
Revised annually, this guide provides spraying schedules for insect and disease pests of apple, pear, cherry, peach and plum trees. You will find safety tips, hints for figuring chemical application rates, and discussions about most pests that attack Missouri fruit trees.
The guide's reference format facilitates locating specific fruit and disease information quickly. Each entry includes chemical material, rate per 100 gallon, rate per acre and comments for each pest/problem.
Authors:
University of Illinois Extension
Authors:
Purdue Extension
Authors:
Iowa State University Extension
Authors:
Kansas State University Agricultural Experiment Station and Cooperative Extension Service
Authors:
University of Kentucky Cooperative Extension Service
Authors:
University of Missouri
Authors:
Missouri State University
Authors:
Ohio State University Extension
Authors:
University of Wisconsin Cooperative Extension Service
Authors:
University of Arkansas
Publisher:
Midwest Fruit Workers Group
