New approaches to frost control

The height of the vines influences how they fare during cold weather.

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  • Natural enemy inventory

Natural enemy inventory

  • February 15th, 2013

Herbivore-induced plant volatile (HIPV) lure to attract natural enemies in orchards.

Monitoring is one of the key components of any successful integrated pest management program, because it provides a window into what is going on in an orchard. This is true not only for pests but also for natural enemies. [...]

  • Vigor control and promotion of fruiting of pear trees

Vigor control and promotion of fruiting of pear trees

  • February 15th, 2013

Considerable time is required to recoup the increased establishment costs that accompany higher density plantings given the precocity challenges associated with commercially available pear rootstocks and scions. Limited fruiting and excessive vegetative growth create an unprofitable scenario that can be difficult to manage. The main objective of our current [...]

  • Frost protection strategies

Frost protection strategies

  • February 1st, 2013

Tree and vine crops can be won or lost because of one or two critical degrees of cold temperature, so, ultimately, the best method of frost protection is good site selection. But even the best sites won’t be perfectly freeze-free.

Is there a good way to recover those one or [...]

The five most common mistakes

  • February 1st, 2013

 for a vertical trellis

Line posts are spaced too far apart. Kuhn advises spacing line posts 32 to 35 feet apart for optimum performance; 40 feet is average, and 50 feet apart is asking for trouble.
Line posts are too small, resulting in posts tipping over. Kuhn recommends using 3- [...]

  • Wind machines

Wind machines

  • February 1st, 2013

Wind machines have been a skyline feature in orchards and vineyards in the Pacific Northwest and California for a long time, but now they’re sweeping into apple orchards in Michigan and New York at a rapid pace.

It’s not a case of locking the barn after the horse is gone. [...]

  • Growers try hooped trellises

Growers try hooped trellises

  • February 1st, 2013

A new apple orchard planted to a V trellis uses greenhouse technology to support the Vs.
Courtesy of Wilson Orhard & Vineyard Supply

A few tree fruit trellis systems in Washington State are sporting a new look. Instead of flat-sided steel for the V and Y arms and supports, growers [...]

  • Enhancing biocontrol

Enhancing biocontrol

  • February 1st, 2013

Knowing when and where natural enemies, such as the green lacewing, are active is critical in order to conserve them. Large inset: Garden orb web spider in apple orchard. Small inset: Adult ladybug feeding on aphids.

This is the first article in an eight-part series highlighting results of a five-year [...]

  • Mist cooling for freeze protection

Mist cooling for freeze protection

  • February 1st, 2013

This experimental plot at Michigan State University’s Clarksville Horticulture Experiment Station was established last year to study the Solid-Set Canopy Delivery system for spraying. Jim Flore wants to test misting as a way to slow down bud development during warm periods in late winter.
Photo by Richard Lehnert

Michigan State [...]

  • Good to Know: Promalin as a frost rescue for apples

Good to Know: Promalin as a frost rescue for apples

Spraying Promalin at full bloom increased fruit set and yield. Fruit size and shape were normal at harvest, but most of the fruit were without seeds (parthenocarpic).
PHOTOS COURTESY of NORTH CAROLINA STATE UNIVERSITY

The Southeast wasn’t spared from the spring freezes that plagued much of the Midwest and eastern [...]

  • The future of Rainier cherries

The future of Rainier cherries

The blush color of Rainier cherries sets the fruit apart in the marketplace. But color is also one of the cherry’s biggest challenges. Consumers must be educated that the light-colored cherries are sweet and ripe.

Production trends of Rainier and the early Rainier-type variety called Early Robin have shown steady [...]

  • Quick Bites

Quick Bites

  • January 15th, 2013

British are Smitten
Prevar Limited has licensed the rights to grow, market, and sell the Smitten apple in the United Kingdom to Worldwide Fruit Limited and Empire World Trade ­Limited.

Smitten (PremA17 cultivar) was bred by Plant and Food Research in New Zealand, which is contracted by Prevar to breed [...]

  • Red-fleshed apples

Red-fleshed apples

  • January 15th, 2013

The red trait, which is common in crab apples and ornamentals, produces flesh colored anywhere from pink to deep red. Skin color and flesh color are inherited separately, so yellow apples can have red flesh.
Photos courtesy of IFORED

Next Big Thing’s last big thing was the SweeTango apple. Now, [...]