2010 Pecan Disease Management Update Jason Brock and Tim Brenneman UGA Dept. of Plant Pathology.

Slides:

Advertisements

Similar presentations

Photo courtesy of Clive Levy, Commercial Farmers Union of Zimbabwe Soybean Rust: Quarantine Exemptions Kent L. Smith, Ph.D. USDA Office of Pest Management.

Advertisements

Managing Kentucky Bluegrass in the Heat at University of Evansville Bob Dale Supervisor of Grounds University of Evansville.

Botany Michael Smith Dept. of Horticulture & L.A. Oklahoma State University.

Peanut Cultivars: Making Sense of all the Options John P. Beasley, Jr. Professor & Extension Peanut Agronomist Crop and Soil Sciences Department John P.

Simulating Cropping Systems in the Guinea Savanna Zone of Northern Ghana with DSSAT-CENTURY J. B. Naab 1, Jawoo Koo 2, J.W. Jones 2, and K. J. Boote 2,

Response of Early and Late Maturing Peanut Cultivars to Sowing Densities and Fungicide Application in Ghana Jesse B. Naab 1, P.V. Vara Prasad 2*, Kenneth.

Ag Innovations Seminar Charlie McKenna Poncho/Votivo and StrategoYLD Early Application.

1.9 Case study: Integrated management of Alternaria blight in carrots

Factors Involved in Full Season Scab Management Jason Brock Department of Plant Pathology UGA – Tifton 2010 Georgia Pecan Growers Association Annual Meeting.

Foliar Fungicide Management for Corn Production Brian Jones Agronomy Extension Agent.

Pecan Production 101: Sunlight, Crop Load Management, Pollination

Stripe Rust Caused by Puccinia striiformis Host is primarily wheat –Barley and some perennial grasses may be infected.

Plant Diseases Meghan Danielson.

Syngenta Cereals: Fungicides. 2 Disease Management – Importance of Flag Leaf.

DISCLAIMER The forecast herein is made with state of the art computer modeling technology. However, the models do not guarantee accuracy or certainty of.

Agronomic and Productive Response to Different Concentrations of Gibberellic acid in Green and Purple Heads Artichoke Cultivars. C. Baixauli, J.M. Aguilar,

Mojave Desert Katherine Semone Dejana Skopljak Kim Sandova Jenna Rimensnyder.

Anthracnose on Shade Trees

By Roceli Unit Summary Students will be able to discuss and identify season. Student will be able to discuss the types of weather associated to a season.

Asian Soybean Rust Gregory Shaner Dept Botany and Plant Pathology Purdue University Revised: 1/30/2006.

Anomalous Summer Precipitation over New Mexico during 2006: Natural Variability or Climate Change? Shawn Bennett, Deirdre Kann and Ed Polasko NWS Albuquerque.

By Ismael Escobar and Dr. Rebecca Creamer ASSURED Program 2007.

Diseases of Orchardgrass Jon Repair Extension Agent, Crop and Soil Sciences (540)

Wheat Management Mike Roegge University of Illinois Extension Adams/Brown Unit With special thanks to Dr. Carl Bradley, Dr. Steve Ebelhar, Dr. Eric Adee.

Fungicide Resistance in Field Crops

Recognizing Diseases of Pecan

Climate in Bangladesh. Where Bangladesh climate Bangladesh has a tropical monsoon type of climate.

Validation, Optimization, and Deployment of Fungicide Advisories for Soybean Virginia Soybean Board 2014 Project Report & 2015 Project Proposal Dr. Hillary.

Factors affecting induction and differentiation of pistillate flowers on pecan trees Michael Smith Dept. of Horticulture & L.A. Oklahoma State University.

1.5 Prediction of disease outbreaks

Unit 10: Soybean Diseases.  Bacterial Blight Occurs on leaves of the SB  Small angular spots  Appear yellow at first  Later turn brown to black 

Disease Management Jason Brock UGA Department of Plant Pathology.

The La Niña Influence on Central Alabama Rainfall Patterns.

Growing Corn Moldova 2015 The Most Important Thing You Need to Learn at This Seminar!  “As to the methods there may be a million and then some, but.

Fruit disease End Next. Introduction:  Fruit diseases are the disease that infects fruit (ripening stage).  Infection may occur in the mother tree itself.

Planet Earth Earth and the Sun’s Energy. Earth’s Movement Energy from the sun helps crops grow, provides light and warms the earth. The Earth requires.

2012 Pecan Disease Management Update Jason Brock Dept

Asian Soybean Rust Monitoring in 2005 and 2006 Dr. Layla Sconyers Dr. Robert Kemerait Dr. Philip Jost Dr. Dan Phillips Research Associate Extension Plant.

Weather of the Prairies Sarah Marsden. Weather Patterns Over the course of a year, the temperature is typically around -3°F to 73°F and is near never.

Environmental Influences on Rhizoctonia Web Blight of Azalea Harald Scherm University of Georgia, Athens, GA Warren Copes USDA-ARS, Poplarville, MS Idiosyncrasies.

Disease Management Jason Brock Department of Plant Pathology.

Damon L. Smith and Andrea F. Payne Department of Entomology and Plant Pathology, Oklahoma State University Stillwater, OK.

DSS in potato cultivation Phytophthora control with advice module fungal diseases from Dacom Precision Farming Koen Laemers 2 november 2012.

Blame it on the kid!. El Niῆo literally means “the boy” The weather phenomenon was named El Niῆo because small events usually occurred around Christmas.

Diseases Management in Grape Nursery Grape seedlings are susceptible to diseases like Anthracnose, downy mildew, powdery mildew, leaf spot, leaf blight,

2016 Fire Season Considerations and Outlook SWCC Predictive Services Updated February 17, 2016.

The Effects of Drought on Pecan Quality Lenny Wells University of Georgia.

PROJECT PLANT A TREE. PROPOSITION  Our Goal is to plant 3 apple trees and 3 cherry trees on the roof of the oaks. WHY!  The tree price would be determined.

Monitoring Risk for Bitter Rot and Apple Scab Kirk Broders Assistant Professor Dept. of Biological Sciences, COLSA University of New Hampshire Matt Wallhead.

IMPORTANT NOTICE: Please read first! DISCLAIMER: The following translated document originates from Brazil, is based on Brazilian data and experience, and.

Cadre/Fungicide Tank-Mixes in Peanut E. P. Prostko, R. C. Kemerait, and T. L. Grey University of Georgia Tifton.

Best Management Practices for Anthracnose Control

Soybean Rust Tyler Stucker.

Crop Disease Update – August 23, 2016

Management of Soybean Rust

Boxwood Blight, a new disease of boxwood in the U.S.

Extension Plant Pathologist University of Nebraska - Lincoln

Damon L. Smith and Andrea F. Payne

India’s Summer and Winter Monsoon Seasons

Fruit disease End Next.

Fruit disease Next End.

NSW Cereal Rusts Season Outlook

Environmental Issues:

Boxwood Blight, a new disease of boxwood in the U.S.

Presentation transcript:

2010 Pecan Disease Management Update Jason Brock and Tim Brenneman UGA Dept. of Plant Pathology

Desirable in Late July

Variability in Glomerella Isolates

April-October Rainfall Tifton, rain events (4.9 inches total) + Daily max temp over 4 below avg

Additional Observations Initial defoliation slowed considerably; some of the earliest affected trees put out new leaves By early October shuck decline was observed, primarily on Desirable. Usually in tops of trees (worse scab there also), often with significant crop load and even in heavily sprayed orchards.

Scab versus Anthracnose More often at base

Affect of Anthracnose on Nuts? Hand-harvested 177 Desirable nuts at shuck split in mid November Rated each one for % severity of anthracnose on shucks (ranged from 0-100% severity) Hand-shelled each nut and evaluated them for size, weight and color

Affects of Anthracnose on nut quality (Desirable, Tifton, 2009) Correlation Coefficients (All sig. P<0.01) Kernel % % % % WeightKernelGoldDarkWafers

Anthracnose Summary 2009 Can be a significant problem on leaves & nuts Worse in crowded orchards with heavy crop load; cultivars vary in susceptibility, but none are immune Wet weather favors infection, but it has a long latent period Early season sprays are important Need more work on chemical control (>100 isolates collected for testing this winter) and epidemiology

2009 Overview Higher disease pressure than in previous three years. Some downy spot Anthracnose Scab

Demethylation Inhibitors (DMIs) propiconazole Orbit Propimax Bumper Tilt Stratego Quilt fenbuconazole Enable tebuconazole Folicur Tebuzole Monsoon Orius Toledo

Demethylation Inhibitors (DMIs) propiconazole Orbit Propimax Bumper Tilt Quilt Stratego fenbuconazole Enable tebuconazole Folicur Tebuzole Monsoon Orius Toledo What about the rate?

Demethylation Inhibitors (DMIs) propiconazole Orbit Propimax Bumper Tilt Quilt Stratego fenbuconazole Enable tebuconazole Folicur Tebuzole Monsoon Orius Toledo What about the timing?

Tebuzole & Super Tin Pack

Strobilurins Abound azoxystobin Heritage Quilt kresoxim-methylSovran pyraclostrobinHeadline trifloxystrobinStratego

Strobilurins Abound azoxystobin Heritage Quilt kresoxim-methylSovran pyraclostrobinHeadline trifloxystrobinStratego What about the rate?

Strobilurins Abound azoxystobin Heritage Quilt kresoxim-methylSovran pyraclostrobinHeadline trifloxystrobinStratego What about the timing?

What resistance management?

All classes of fungicide have some risk. Is it resistance or other factors? Rotate mode of action Tank Mixes DO NOT OVER USE ANY ONE MODE OF ACTION.