Orange rust is one of the most common diseases of blackberries and black raspberries in the Midwest. It is a systemic disease that is confined to Rubus spp. (autoecious). There are two forms, a long-cycle form that occurs on black raspberry, and a short-cycle form that occurs on blackberries. There are two causal organisms: Arthuriomyces…Read more about Orange rust in brambles[Read More]
Bramble Fruit
Indiana Horticultural Society Field Day June 28, 2017 Tuttle Orchard Greenfield, IN More details to come but mark the date on your calendar and plan to attend Indiana Horticultural Congress February 13-15, 2018 Indianapolis Marriott East Indianapolis, IN For further information contact Lori Jolly-Brown @ljollybr@purdue.edu or visit www.inhortcongress.org for more details.
One of the first and most important parts of a good insect and mite management program is the application of an early season oil spray to control European red mites, San Jose scale, and several species of aphids. Scales overwinter on the tree as nymphs and European red mites and aphids overwinter as eggs. Because…Read more about Oil Sprays[Read More]
A number of growers have experienced increasing problems with woolly apple aphids over the last several seasons. Part of the reason for the increased populations may be related to the changing spectrum of insecticides you are using to control other pests. Our experience has been that many of the aphicides that are available that provide…Read more about Woolly Apple Aphid[Read More]
One way insects communicate with individuals of the same species is with pheromones. Pheromones are volatile chemicals released by an insect that usually can be detected only by individuals of the same species. There are a number of different types of pheromones, but the most common type is the sex pheromone. Usually the females will…Read more about Pheromones and Pheromone Traps[Read More]
As the spray season approaches, it is good to remember the profound impact water quality has on the performance of pesticides used by fruit growers. Purdue Pesticides Program recently published a guide, The Impact of Water Quality on Pesticide Performance PPP-86, available at the Education Store, 1-888-EXT-INFO or www.extension.purdue.edu/store/. I highly recommend this guide to…Read more about Effects of Water Quality of Pesticides[Read More]
The results of a historical primate behavior analysis suggest that species with fruit-filled diets evolved larger brains. A popular theory among evolutionary biologists is that we have our sociability to thank for our big brains. This “social brain hypothesis” suggests that the mental effort involved in interacting with others eventually increased our cognitive capacity. However,…Read more about New study: Diet contributes to brain size[Read More]
March is a good time to finish pruning summer-bearing brambles. Last years fruited canes should be removed now if they were not removed last summer or fall. Remove weak or spindly floricanes and thin to 4-6 canes per foot of row. Laterals on blackberries and black raspberries should be shortened to about pencil diameter on…Read more about Pruning brambles[Read More]
Anthracnose, caused by Elsinoe veneta, is a common fungal disease of brambles. It is mainly a problem on black raspberries and some blackberries. It is much less common on red raspberries. Most modern thornless blackberries (Apache, Triple Crown, Osage, Ouachita, etc) are resistant to anthracnose. However, if you grow a susceptible variety, is is important…Read more about Raspberry Anthracnose[Read More]