Plant Pathology, Disease Control of Fruit and Vegetables

Antifungal Activity of Different Extracts of Chenopodium album against Fusarium oxysporum f. sp. cepae, the Cause of Onion Basal Rot

Antifungal potential of different parts of Chenopodium album L. was examined against Fusarium oxysporum Schlechtend. f. sp. cepae (Hans.) Snyder and Hansen, the cause of basal rot disease of onion (Allium cepa L.). In screening bioassays, the effect of different concentrations (0.5, 1.0, …3...
Saima Rauf
Arshad Javaid
International Journal of Agriculture and Biology

Organic production of tomatoes in the amazon region by plants grafted on wild Solanum rootstocks

  The production of organically grown tomatoes in the Amazonian region of Brazil is difficult due to inherent phytosanitary issues. The objectives of the present investigation were to evaluate the productivity of grafted tomato plants (Solanum lycopersicum cv. Santa Adélia) grown...
Elaine Aparecida de Paula Farias
Regina Lúcia Félix Ferreira
Sebastião Elviro de Araújo Neto
Fabiana Cruz Costa
Damaris Suelen Nascimento
Ciência e Agrotecnologia

Crucifer Diseases: Clubroot (Plasmodiophora brassicae)

Damage Symptoms: Most crucifer crops are susceptible to clubroot; cabbage, Chinese cabbage, and Brussels sprouts are highly susceptible. Enlargement of fine roots, secondary roots, and the taproot results in the formation of spindle-shaped clubs. The clubs are generally widest in the middle and...
Lowell L. Black
AVRDC - The World Vegetable Center

Avocado Diseases

  In New South Wales avocados are grown in the coastal areas north of Gosford with some plantings in the irrigation areas along the lower Murray River. The principal soils are basaltic clay loams on the coast and deep sands at Stuarts Point and on the Murray. The main cultivar is Hass. It is...
R N. Allen
G.E. Stovold
J.F. Dirou
NSW Agriculture

Peanut- Insect, Disease, Nematode, and Weed Control Recommendations

Contents IPM Insect Control in Peanuts Table of Peanut Insect Control (chemical) Table of Common Beneficial Insects Occurring in Peanut Fields Disease and Nematode Control Table of Peanut Disease Control Table of Properties of Fungicides and Nematicides Used on Peanuts That May...
Alabama Cooperative Extension System
Alabama A&M and Auburn Universities

Identification & Management of Pumpkin Diseases

It may be difficult to imagine, but we receive more requests for information on pumpkin diseases and pumpkin disease control than on any other vegetable crop. Some of the requests arrive during the winter, when folks have had time to reflect on the previous season’s problems and are anxious...
Richard Latin
Karen Rane
Purdue University

Watermelon

Watermelon (Citrullus lanatus) is a member of the cucurbit family (Cucurbitaceae). The crop is grown commercially in areas with long frost-free warm periods. Plants must be grown at a wide spacing because of their long, trailing vines. The exception is for dwarf cultivars where the plants can be...
Todd C. Wehner
North Carolina State University

Cacao Diseases in Central America

Diseases are the biotic factor with the greatest impact in cacai production in Latin America and the world. In Central America, bacteria, viruses and nematodes do not cause significant problems; instead, fungi and similar organisms are responsible for most of the losses. Monilians (caused by the...
Wilbert Phillips-Mora
Rolando Cerda
The Tropical Agricultural Research and Higher Education Center (CATIE)

Diseases of Citrus in Arizona

Although citrus is indigenous to southeast Asia, oranges were first planted commercially in central Arizona in the late 1800s. Today commercial production is centered in several warm and low-frost-risk areas of central and southwestern Arizona. A great number of citrus varieties are also widely...
Mary Olsen
Mike Matheron
Mike McClure
Zhongguo Xiong
The University of Arizona

Management of Tomato Leaf Spot Caused by Alternaria tenuissima Wiltshire using Salicylic Acid and Agrileen

Alternaria tenuissima was isolated from tomato showing symptoms of leaf spot disease cultivated under greenhouse conditions from Asir region, Saudi Arabia. The ability of salicylic acid (SA) and the newly prepared bioactive matter "Agrileen" (AG) to suppress the leaf spot disease of...
Ramadan Agamy
Saad Alamri
Mahmoud F.M. Moustafa
Mohamed Hashem
International Journal of Agriculture & Biology