Hardy Fruits for Alberta
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Diseases of Tree Fruit Apple: Diagnosis and Management
1 Diseases of Tree Fruit Apple: Diagnosis and Management Sara M. Villani June 22, 2017 Department of Entomology and Plant Pathology, NCSU [email protected] 2 Apple Disease Challenges in the S.E. • Several apple diseases to contend with Apple Disease Challenges in the S.E. 3 • Paucity of disease resistant cultivars – Breeding efforts focus on consumer preference – Usually single-disease resistance ‘Enterprise’ ‘Prima’ ‘Goldrush’ http://www.eatlikenoone.com/prima-apples.htm http://www.eatlikenoone.com/enterpris-apples.htm http://kuffelcreek.wordpress.com/ ‘William’s Pride’ ‘Liberty’ ‘Pristine’ http://www.eatlikenoone.com/pristine-apples.htm http://www.plant.photos.net/index.php?title=File:Apple_williams_pride.jpg http://www.plant.photos.net/index.php?title=File:Apple_libertye.jpg Apple Disease Challenges in the S.E. 4 • Warm, humid climate – Favorable for pathogen infection and disease development – Inadequate chilling hours: longer period of susceptibility to blossom infection Susceptible Host Biology and Conducive availability of Environment pathogen Apple Disease Challenges in the S.E. 5 • Maintaining practices of fungicide resistance management and maximum annual applications – Commercial apple growers in Hendersonville NC: Up to 24 fungicide applications in 2017! Multi-site Single-site Biologicals Protectants Fungicides Mancozeb Group 3: S.I.’s Bacillus spp. Captan Group 11: “Strobys” A. pullulans Copper Group 7: SDHIs Sulfur Group 1: “T-Methyl” ziram U12: Dodine Phosphorous Acid Confusing Fungicide Jargon 6 Fungicides are classified in a number of ways: 1. Chemical Group – e.g. triazoles, benzimidazoles 2. Biochemical Mode of Action (my preference, common in academia) – e.g. Demethylation inhibitor (DMI); Quinone-outside inhibitor (QoI) 3. Physical Mode of Action – e.g. -
Cedar-Apple Rust
DIVISION OF AGRICULTURE RESEARCH & EXTENSION Agriculture and Natural Resources University of Arkansas System FSA7538 Cedar-Apple Rust Stephen Vann Introduction Assistant Professor One of the most spectacular Extension Urban Plant Pathologist diseases to appear in spring is cedar- apple rust. This disease is caused by the fungus Gymnosporangium juniperi-virginianae and requires both cedar and apple trees to survive each year. It is mainly a problem in the eastern portion of North America and is most important on apple or crab Figure 2. Cedar-apple rust on crabapple apple (Malus sp), but can also affect foliage. quince and hawthorn. yellow-orange color (Figures 1 and 2). Symptoms On the upper leaf surface of these spots, the fungus produces specialized The chief damage by this disease fruiting bodies called spermagonia. On occurs on apple trees, causing early the lower leaf surface (and sometimes leaf drop and poor quality fruit. This on fruit), raised hair-like fruiting bod can be a significant problem to com ies called aecia (Figure 3) appear as mercial apple growers but also harms microscopic cup-shaped structures. the appearance of ornamental crab Wet, rainy weather conditions favor apples in the home landscape. On severe infection of the apple. The apple, symptoms first appear as fungus forms large galls on cedar trees small green-yellow leaf or fruit spots in the spring (see next section), but that gradually enlarge to become a these structures do not greatly harm Arkansas Is Our Campus Visit our web site at: Figure 1. Cedar-apple rust (leaf spot) on Figure 3. Aecia of cedar-apple rust on https://www.uaex.uada.edu apple (courtesy J. -
Apples: Organic Production Guide
A project of the National Center for Appropriate Technology 1-800-346-9140 • www.attra.ncat.org Apples: Organic Production Guide By Tammy Hinman This publication provides information on organic apple production from recent research and producer and Guy Ames, NCAT experience. Many aspects of apple production are the same whether the grower uses low-spray, organic, Agriculture Specialists or conventional management. Accordingly, this publication focuses on the aspects that differ from Published nonorganic practices—primarily pest and disease control, marketing, and economics. (Information on March 2011 organic weed control and fertility management in orchards is presented in a separate ATTRA publica- © NCAT tion, Tree Fruits: Organic Production Overview.) This publication introduces the major apple insect pests IP020 and diseases and the most effective organic management methods. It also includes farmer profiles of working orchards and a section dealing with economic and marketing considerations. There is an exten- sive list of resources for information and supplies and an appendix on disease-resistant apple varieties. Contents Introduction ......................1 Geographical Factors Affecting Disease and Pest Management ...........3 Insect and Mite Pests .....3 Insect IPM in Apples - Kaolin Clay ........6 Diseases ........................... 14 Mammal and Bird Pests .........................20 Thinning ..........................20 Weed and Orchard Floor Management ......20 Economics and Marketing ........................22 Conclusion -
An Old Rose: the Apple
This is a republication of an article which first appeared in the March/April 2002 issue of Garden Compass Magazine New apple varieties never quite Rosaceae, the rose family, is vast, complex and downright confusing at times. completely overshadow the old ones because, as with roses, a variety is new only until the next This complexity has no better exemplar than the prince of the rose family, Malus, better known as the variety comes along and takes its apple. The apple is older in cultivation than the rose. It presents all the extremes in color, size, fragrance place. and plant character of its rose cousin plus an important added benefit—flavor! One can find apples to suit nearly every taste and cultural demand. Without any special care, apples grow where no roses dare. Hardy varieties like the Pippins, Pearmains, Snow, Lady and Northern Spy have been grown successfully in many different climates across the U.S. With 8,000-plus varieties worldwide and with new ones introduced annually, apple collectors in most climates are like kids in a candy store. New, Favorite and Powerhouse Apples New introductions such as Honeycrisp, Cameo and Pink Lady are adapted to a wide range of climates and are beginning to be planted in large quantities. The rich flavors of old favorites like Spitzenburg and Golden Russet Each one is a unique eating experience that are always a pleasant surprise for satisfies a modern taste—crunchy firmness, plenty inexperienced tasters. of sweetness and tantalizing flavor. Old and antique apples distinguish These new varieties show promise in the themselves with unusual skin competition for the #1 spot in the world’s colors and lingering aftertastes produce sections and farmers’ markets. -
Fruit Handbook for Western Washington
EB0937 Fruit Handbook for Western Washington VARIETIES AND CULTURE G.A. Moulton and J. King Washington State University Mount Vernon Northwestern Washington Research and Extension Center (WSU NWREC) INTRODUCTION The Fruit Handbook for Western Washington is intended as a guide for both home growers and commercial orchardists. The information in this bulletin is based on fruit evaluation trials conducted during the past 40 years at Washington State University Mount Veron’s Northwestern Washington Research and Extension Center (WSU NWREC) located in the Skagit Valley, several miles west of Mount Vernon, a coastal area west of the Cascade range. The coastal maritime climate of western Washington, particularly the Puget Sound region, is characterized by mild wet winters and relatively dry summers with moderate daytime temperatures and cool nights. While the various climatic zones within western Washington may favor different varieties of fruit, most of those listed here will bear reliably year after year. Although a hard frost in February or March can damage early flowering fruit kinds like apricots, it is rarely cold enough to do permanent harm to temperate-climate varieties. This bulletin covers the selection and cultivation of standard tree fruit kinds generally found in temperate zone orchards: apples, pears, Asian pears, plums, cherries, peaches, nectarines, and apricots. Also discussed here are some of the fruiting shrubs (currants, gooseberries, aronia, sea buckthorn or seaberry) and vines (grapes,1 kiwis) that have been tested over -
Selected Apple Varieties
Selected Apple Thanksgiving Point Office LARRY A. SAGERS Varieties 3003 North Thanksgiving Way HORTICULTURE SPECIALIST Lehi, Utah 84043-3740 UTAH STATE UNIVERSITY (801) 768-2300 EXTENSION Variety Ripening Date Fruit Comments Small, bright-red fruit with white, firm, crisp flesh. Very Good dessert apple. Light crops but bears Akane August flavorful. every year. Fruit holds on tree. Arkansas October, Hard, crisp, deep-red apple. Best after storage for two months. Black November Crisp, sweet, aromatic flesh that oxidizes slowly. Productive, but fruit size & color variable, Ambrosia September Naturally sweet, requiring little sugar when cooked. Good quality, stores well Ashmead’s Medium-size, red-orange blush over rough yellow- October Good disease resistance. Old variety. Kernel green skin. October- Fruit drops in hot climates. Biennial Braeburn Medium-size, golden red. Crisp, sweet-tart flavor. November bearing. Ripens too late in Utah. September Crisp, red with gold stripes. High quality with excellent Hardy , precocious bearer that is easy to Cameo October flavor and storage life grow Cox Orange Late Medium-size, dull orange-red. Flesh yellow, firm, Susceptible to cracking. Dense growth. Pippin September juicy. Flavor superb. Dislikes extreme cold, heat or low humidity. Delicious Color varies with temperature and cultivar; likes Vary in ripening season and color. Many August- (Red bright, warm days, cool nights. Older cultivars have varieties. Needs pollinator, Golden September Delicious) better flavor. Delicious good. Medium fruit. Greenish yellow skin with red stripe. Good summer apple. Cooks well but does Earliblaze July-August Crisp, white, firm, juicy flesh. not store. Medium, red and yellow color. Excellent, tart flavor. -
Low-Chill Apples
University of California Cooperative Extension Central Coast & South Region Center for Landscape and Urban Horticulture Low-Chill Apples By Kathie Carter Cooperative Extension/ Botany Plant Sciences Dept. University California Riverside Introduction: The apple (Malus domestica) is a member of Rosaceae, the rose family. It is older in cultivation than the rose and is sometimes referred to as the prince of the rose family. It presents many of the extremes in color, size, fragrance and plant character of its rose cousin plus an important added benefit—flavor! One can find apples to suit nearly every taste and cultural demand. With attention to variety selection apples can be grown successfully in Southern California. Low-Chill Apple Varieties: There are 8,000-plus apple varieties worldwide with new ones introduced annually. Apple varieties exhibit considerable genetic diversity. Some varieties have several strains, each with its own characteristics. Spur-type (short shoot growth and abundant spur production) varieties do poorly on dwarfing rootstocks; they are best grown on seedling rootstock. Some require as few as 70 days to mature; others take 180 days or more. For optimum production, most apple varieties require cross-pollination from another variety that blooms at the same time and produces abundant, viable pollen. Many varieties are self- unfruitful and have sterile pollen; others are partially self-fruitful (not all of their pollen is viable); a few are self-fruitful. Winter chilling requirements for most varieties are 500 to 1000 hr. below 45° F (7° C). There are relatively few varieties adapted to mild winter climates (chill hours below 500) like those in non-mountainous areas of Southern California. -
"Register of New Fruit and Nut Varieties"
Register of New Fruit and Nut Varieties Brooks and Olmo List 35 Edited by James N. Cummins1 Department of Horticultural Sciences, New York State Agricultural Experiment Station, Cornell University, Geneva, NY 14456 ADDENDA AND REVISIONS Redglobe.-Described in List 32. Plant pat. 4787, 10 Nov. 1981. Symphony. -Described in List32. Plantpat. 5013, 29 Mar. 1983. APPLE Freedom. -Described in List 34. Plant pat. 5723, 22 Apr. 1986. NECTARINE Jonalicious (Daniel). -Synonym added; plant pat. 1777, 9 Dec. 1958. Stark GulfPride (Zaipride). -Described in List 34. Plant pat. Nured® Jonathan (Improved Red Jonathan) -Synonym added; 5461, 7 May 1985. plant pat. 2650, 5 July 1966. Stark HoneyGlo (Anderhone). -Described in List 32. Plant pat. Paulared (Summer Mac). -Synonym added; plant pat. 2800, 12 4789, 10 Nov. 1981. Mar. 1968. Stark® Blushing Golden™ (Griffith Gold) -Synonym added; plant pat. 2835, 1 Oct. 1968. PEACH Starkspur Compact Red Delicious (Cascade Compact Red Delicious).-Described in List 32. Plant pat. 4811, 26 Jan. 1982. Eldorado. -Described in List 32. Plant pat. 4780, 20 Oct. 1981. Starkspur Dixired Delicious (Hared). -Described in List 32. Plant Stark® Finale. Described in List34. Plant pat. 5655, 4 Feb. 1986. pat. 5547, 3 Sept. 1985. Stark® Gulf Queen (Zaiqueen). -Described in List34. Plantpat. Starkspur Law Rome (PeaceValley) -Described in List 32. Plant 5463, 7 May 1985. pat. 4793. 24 Nov. 1981. Starkspur UltraStripe Delicious (Jenred) -Described in List 32. Plant pat. 5472, 21 May 1985. RASPBERRY Starkspur Winter Banana (Frecon). -Described in List33. Plant pat. 4901, 26 Oct. 1982. Royalty. Described in List 33. Plant pat. 5405, 12 Feb. -
Cold Hardy, Disease Resistant Fruit Trees, Shrubs, Vines & Canes
519.669.1349 2016 COLD HARDY, DISEASE RESISTANT FRUIT TREES, SHRUBS, VINES & CANES 6987 8th Line West, Elora, ON N0B 1S0 Dear Friends, Welcome to our latest catalog of food producing plants. A brief introduction to those who are unfamiliar to us. Whiffletree Farm & Nursery is a family owned and operated nursery near Elora. We are part of a sizeable Mennonite community in what is some- times referred to as "St. Jacob's Country". We believe nobody should have to settle for the bland flavourless fruit at the supermarket but should have the opportunity to experience the anticipation and the "wow" of tasting luscious homegrown fruit. With that in mind our goal is to provide the best-tasting varieties of a broad range of common and uncommon fruits, as well as the knowledge and tools to give you the best shot at realizing your dreams. We are constantly on the look-out for superior and unique varieties with an emphasis on cold-hardiness and disease resistance. We strive to integrate sustainable practices in tree growing and care, based on an abiding respect for the Creator of the earth with all its resources. Mail service is our primary and preferred method for you to place your order. Please fill out the order form and include your cheque or money order payment. If anything is incorrect, we will make the needed adjustments or refunds. Thank you for choosing us as your source for plants. Your success is important to Whiffletree and enables us to continue in our business as your plant supplier now and in the future. -
Massachusetts Apple Varieties Apple Descriptions Taken from Apples by Roger Yepsen (C.1994 , W.W
Massachusetts Apple Varieties Apple descriptions taken from Apples by Roger Yepsen (c.1994 , W.W. Norton & Company) Akane Akane is a cross between the well-known Jonathon and the obscure Worcester Pearmin. Akane comes highly recommended as a dessert apple, with an invigorating, tart taste and a marked aroma. Beneath its thin skin, the bright white flesh is juicy and crisp. If you leave the peels on, Akane will make a pinkish sauce with a very good flavor; strain the sauce after cooking. Pie slices keep their shape. The apples can be dried successfully. Akane will not keep its quality for long in storage. Baldwin Baldwin began as a seedling in the northeastern Massachusetts town of Wilmington, sometime before 1750. The apple was named for a Colonel Baldwin, who grafted trees from the original seedling. The site of the forest tree is marked with a monument topped by an apple. The thick, tearing, skin is on the juicy side. Baldwin's yellow flesh is crisp, coarse and juicy, with a spicy character that recommends it as a cider apple and for pies. These apples keep extremely well in storage. Braeburn Braeburn is a chance seedling from New Zealand's South Island, introduced in 1952. Uncut, Braeburn may have a faintly cidery perfume. The skin is thin and seems to disappear in the mouth. The flesh is yellow-green to creamy yellow, breaking and crisp in texture. Braeburn offers a complex, sweet tart flavor, with a noticeably aromatic aftertaste. When cooked, Braeburn turns simpler but doesn't go flat. As sauce it needs little or nothing in the way of added sweetening. -
Tree Fruit Update By: Diane Miller 1) Honeycrisp Nutrition As We Enter August in This Earlier-Than-Usual 2017 Season, Honeycrisp Apple Is on the Radar
August 2017 Mini-Newsletter Tree Fruit Update By: Diane Miller 1) Honeycrisp Nutrition As we enter August in this earlier-than-usual 2017 season, Honeycrisp apple is on the radar. Honeycrisp is a challenge to grow but the rewards in price achieved and consumer satisfaction make it a ‘must have’ apple. From a grower perspective, the challenges of growing Honeycrisp predominately revolve around mineral nutrition management (at least until the fruit pecking birds arrive). Viewed through that lens, crop load is an aspect of mineral nutrition management. Let’s take a quick tour through the problems that might be found right now in Honeycrisp: Cork spot/bitter pit: Apples from young trees and trees with a light crop load often exhibit corking on the bottom half. This is from inadequate calcium in the fruit. Calcium is essential for cell structural integrity, and in lack, cells are essentially tearing apart (and patching over) as these large fruit expand (cellular breakdown on the tree). Bitter pit (cellular breakdown off the tree) can show up in storage and result in unsatisfied customers. How to get more calcium into the fruit? If corking is seen, the problem cannot be solved this time of year. The trick is to work at getting calcium into the fruit, although calcium naturally flows much more to the shoots and leaves. The GoodFruit Grower had an excellent article based on Dr. Lailiang Cheng’s research at Cornell on year-long calcium management strategies for Honeycrisp (http://www.goodfruit.com/managing-honeycrisp-nutrition/ ). Dr. Cheng discusses the interactions among nitrogen, potassium, magnesium (avoid sprays during the season) and calcium (do spray) throughout the season and how to get the balance needed to get adequate calcium into the fruit. -
RUST DISEASES of APPLE 659 Miles from Redcedars at Altitudes up Irregular in Shape Than the Apple Rust to One-Half Mile
658 YEARBOOK OF AGRICULTURE 1953 destructive on quince. Its native host plants include hawthorn, Amelanchier, and wild apples. It also infects the fruit of some varieties of apple. The fungus is G. clavipes. The three fungi were studied early in the nineteenth century. At first the forms on the cedar and on the apple Rust Diseases were considered to be different. By 1886, however, more study showed that the spores produced by the fungus on cedar of Apple trees would infect apples and that the spores produced on apples were re- sponsible for new infections on the ce- D, H, Palmiter dar. The rust diseases cannot spread from cedar to cedar nor from apple to Many a fruit-growing district in the apple but must alternate between the East is "a land of red apples and red two hosts. cedars.'' In the Midwest where cedars The fungus that causes cedar-apple did not occur naturally the pioneers rust spends almost 2 years of its life often planted them for windbreaks cycle on the cedar trees. Gedar leaves near orchards. The combination would are infected between July and April be felicitous were it not that some fungi by aeciospores blowm from lesions that require both apples and cedars for develop on apple leaves. Small brown their development. galls, called cedar apples, appear dur- Before our cultivated apples, quince, ing the sumxner but do not mature until and other pome fruits w^ere introduced the following spring, when they may from Europe, three such fungi, natives, be 2 inches in diameter. After a few infected the leaves or fruit of native warm spring rains, about the time crab apples, hawthorn, serviceberry, apple blossoms are in the pink stage, and sorbus, all members of the rose the galls increase in size and extrude family.