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Annual Pomology Field Day
Tree Fruits Eastern Idaho
Posted on: August 28, 2003 by Jerry Neufeld
The University of Idaho Annual Fruit Field Day will be held on Tuesday, September 9, 2003 from 9:00am to 12:30. Several varieties of new table grapes, peaches, nectarines, apples, and plums will be presented during the tour, and participant can taste these fruits. The highlights of the field day are:
1)Presentation and tasting of several types and cultivars of fruits at the main office complex
2)Tour of the table grape vineyards, peaches and nectarines, and discussion/ questions/ answers on various cultural practices of fruit crops, including pruning, thinning, growth regulators, girdling, variety and rootstock selections, irrigation, etc..
3)Tour of the U of I comprehensive and modern Fuji and Gala apple irrigation projects.
4)Tour of the alternative fruit crops, including quince, Asian pears, persimmons and mulberries.
Where: University of Idaho, Parma Research/Extension Center, in front of the main office complex
When: Tuesday September 9, 2003, Starts at 9 am (sharp) till 12:30
Cost: Free of Charge
Who Can Participate? Open to the Public. Those interested in fruit production, including commercial growers, small-scale growers, alternative fruit growers, home gardeners, Master gardeners, horticultural professionals, extension and research faculty/staff, and horticultural hobbyist are welcome.
For Additional Information, Please call: 208-722-6701 Extension 228 OR contact Dr. Essie Fallahi at 208-722-6701 Ext. 255
Minimizing Root-Knot Nematode Problem On Potato In This Seas
Potato All Locations
Posted on: August 27, 2003 by Dr. Saad Hafez
A severe winter is one of the characteristics for Idaho's weather. But, mild winter conditions during the current year followed by an early warm spring and a hot summer produced a perfect condition not only for the growth of potato but also for the 'unseen enemy' nematode. It has been a perfect condition for the nematode multiplication, resulting in severe damage on the 2003 potato crop.
Among all abiotic factors, temperature plays an important role on the nematode life cycle, feeding and multiplication rate. Deep frost and lower temperatures during the winter season reduce the nematode population and there by minimize the nematode damage on the succeeding potato crop. This year crop season is characterized by unusual mild winter with very early warm spring, which leads to the more nematode generations within a short period. This environment is highly congenial for the development of all nematodes. Although the nematode diagnostic lab can determine the initial nematode population before planting of potato, no method is available to determine the accurate population during the crop growth period. But, when there is a will there is a way. Yes, one of the ways by which growers can minimize the root-knot damage on potato is to harvest the crop early and not to keep the crop in storage. Adoption of such a practice will be highly useful to the growers whose field has a previous history of root-knot nematodes.
late blight identified in southwest Idaho
Potato Treasure Valley - Idaho
Posted on: August 22, 2003 by Brad Geary
Late blight has positively been identified west of Boise. It was identified the morning of Friday August 22. Recommendations are to scout fields thoroughly, paying close attention to low spots in the field, center pivot points or any other location that may have, or have had, excessive water. A protectant fungicide application should be made as soon as possible - if one has not been applied in the last seven days. Before applications are made please check the preharvest interval. The spread of late blight is likely with the current cool rainy weather, so scout potato fields closely and use appropriate control measures.
Pink rot
Potato Magic Valley
Posted on: August 20, 2003 by Jeff Miller
Severe pink rot has been identified in several fields in central and eastern Idaho. Plants appear wilted with leaves dying and plant lying down. This is different from the typical flagging symptoms associated with Verticillium wilt. Infected plants are showing lesions on the below ground stem that resemble severe Rhizoctonia. Infected stem tissue easily sloughs off. The pathogen grows from an initial below-ground stem infection up and down the stem. Tubers are becoming infected by the pathogen growing out the stolon or by direct contact if tubers are touching infected stems. Some fields have shown extremely high infection rates. In these cases, immediate vine kill is advised to prevent the pathogen from growing into healthy tubers. The severity of the problem is most likely caused by the extended high temperatures we have experienced the last several weeks. Maximum soil temperatures have been above 80 F for much of July and the early part of August. Extra water that may have been applied to help manage heat stress has compounded the pink rot problems. The University of Idaho would like to receive pink rot samples in order to determine fungicide sensitivity. Please contact Jeff Miller at 208-397-4181 or by email at jsmiller@uidaho.edu.
Pink rot
Potato Eastern Idaho
Posted on: August 20, 2003 by Jeff Miller
Severe pink rot has been identified in several fields in central and eastern Idaho. Plants appear wilted with leaves dying and plant lying down. This is different from the typical flagging symptoms associated with Verticillium wilt. Infected plants are showing lesions on the below ground stem that resemble severe Rhizoctonia. Infected stem tissue easily sloughs off. The pathogen grows from an initial below-ground stem infection up and down the stem. Tubers are becoming infected by the pathogen growing out the stolon or by direct contact if tubers are touching infected stems. Some fields have shown extremely high infection rates. In these cases, immediate vine kill is advised to prevent the pathogen from growing into healthy tubers. The severity of the problem is most likely caused by the extended high temperatures we have experienced the last several weeks. Maximum soil temperatures have been above 80 F for much of July and the early part of August. Extra water that may have been applied to help manage heat stress has compounded the pink rot problems. The University of Idaho would like to receive pink rot samples in order to determine fungicide sensitivity. Please contact Jeff Miller at 208-397-4181 or by email at jsmiller@uidaho.edu.
Malheur Experiment Station Onion Variety Day August 26
Onion Treasure Valley - Oregon
Posted on: August 8, 2003 by Cedric Shock
Malheur Experiment Station
Onion Variety Day
Presented By the OSU Malheur
Experiment Station
August 26, 2003 from 9AM to 1PM
Complimentary Lunch will be served.
Please reserve lunch by calling Janet Jones
Malheur Experiment Station
595 Onion Ave.
Ontario OR 97914
(541) 889-2174
http://www.cropinfo.net/
Larado Cleared for Sugarbeets in Oregon for powdery mildew c
Sugarbeets Treasure Valley - Oregon
Posted on: August 1, 2003 by Lynn Jensen
Larado has recieved a section 18 emergency label for powdery mildew control in sugarbeets for the 2003 crop year. There is a limit of application per season.
laredo on sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 31, 2003 by Jerry Neufeld
USEPA has approved the use of Laredo to control powdery mildew on sugar beets in Idaho. EPA changed the number of applications to only a single application, even though two were requested. You can view the label document, along with other Section 18 approvals on the ISDA website at http://www.idahoag.us/agresource/section18.htm
Iris Yellow Spot Virus found in Nyssa, Oregon Slope
Onion Treasure Valley - Oregon
Posted on: July 31, 2003 by Lynn Jensen
The Iris Yellow Spot Virus has been identified on onion fields in the Nyssa and Oregon Slope areas of the Treasure Valley. Keep onions well watered and free of stress.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 29, 2003 by Jerry Neufeld
The second generation of corn earworm will begin laying eggs in the silk of corn between 1450 and 1650 growing degree days (GDD). In the Caldwell area we will reach 1450 GDD on August 3. In the Parma area we will reach 1450 GDD tomorrow. It is still important to scout your corn fields for earworm eggs.
update on Laredo
Sugarbeets Treasure Valley - Idaho
Posted on: July 28, 2003 by Jerry Neufeld
The following information about Laredo was posted on the UIsugarbeet website by Dr. John Gallian.
The EPA has notified George Robinson, Idaho State Department of Agriculture, that a decision will be made during the week of July 28 whether to grant the Section 18 for Laredo. If we receive permission to use Laredo, it will allow the material to be applied as the second application for powdery mildew where a strobilurin (Gem or Headline) or benzimidazole (Topsin M) has already been
applied, allowing good resistance management practices to be followed.
black bean aphid
Sugarbeets Treasure Valley - Idaho
Posted on: July 23, 2003 by Jerry Neufeld
Amalgamated Sugar Company is reporting that Black Bean Aphids are being found in sugarbeet fields across the Treasure Valley. Growers are often mixing an insecticide with a fungicide for powdery mildew and applying them at the same time. At the present time, Laredo is still not labeled for powdery mildew in sugarbeets in Idaho. ISDA is still waiting for US-EPA to approve the label.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 21, 2003 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm we are currently at 1139 GDD in Caldwell and 1272 GDD in the Parma area. First generation moths will begin laying eggs in fresh corn silk at approximately 1300 GDD. Eggs will hatch a few days after reaching 1300 GDD and the larvae will then begin feeding on the corn kernels. The GDD model is predicting we will reach 1300 GDD in Caldwell on July 27 and in Parma on July 22.
cereal leaf beetle
Small Grains Treasure Valley - Idaho
Posted on: July 17, 2003 by Jerry Neufeld
Adult Cereal Leaf Beetles are emerging from the soil and feeding on grasses and young corn. According the U of Idaho CIS 994 “Newly emerged adults feed on a variety of material, but prefer succulent grasses, grain, and young corn.” Their numbers can reach several hundred per plant, but rarely cause economic damage because they feed for such a short time (approximately 2 weeks) before they go into a resting stage. Adults feed entirely through the leaf surface, between the veins, in a straight line. There is only one generation per year.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 14, 2003 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm we are currently at 967 GDD in Caldwell and 1097 GDD in the Parma area. First generation moths will begin laying eggs in fresh corn silk at approximately 1300 GDD. Eggs will hatch a few days after reaching 1300 GDD and the larvae will then begin feeding on the corn kernels. The GDD model is predicting we will reach 1300 GDD in Caldwell on July 29 and in Parma on July 23. As we approach 1300 GDD you will want to step up your field scouting and take the appropriate control measures.
powdery mildew in sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 10, 2003 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the Notus, Weiser and Ontario areas. In addition, loopers have been found in several sugarbeet fields around the county. An insecticide for loopers can be tank mixed with a fungicide to treat both pests at the same time.
At the present time, Laredo does not have a label for powdery mildew in sugarbeets in Idaho. ISDA and UI are working with the manufacturer and EPA on this issue. If Laredo does become available I will post that information to this website.
UI Sugarbeet Specialist Dr. John Gallian is recommending that you do not use chemicals with the same mode of action more than once a year on the same fields. In addition, he is recommending that you add 5 pounds of sulfur to each treatment in order to fight resistance.
early blight
Potato Magic Valley
Posted on: July 7, 2003 by Terry Helms
Found Early Blight 7-4-03 in 1 Russet Burbank field near Burley.
Early blight in potatoes
Potato Magic Valley
Posted on: July 7, 2003 by Jeff Miller and Nora Olsen
Early blight has been found in the Magic Valley. The samples had large, black stem lesions similar to late blight. However, distinct early blight lesions were present on the foliage. Although this has been seen only on a limited scale, it stresses the importance to scout fields regularly and to bring in any suspect plant samples into the University of Idaho for confidential evaluation.
powdery mildew in sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 7, 2003 by Jerry Neufeld
Representatives from Amalgamated Sugar Company are saying that now is the time to be on the lookout for powdery mildew in sugarbeets. Mildew usually shows up first at the western end of the Treasure Valley and moves east. Amalgamated field representatives are closely monitoring the mildew situation, an alert will be posted when the disease is actually found.
Small Grains Field Day
Small Grains Treasure Valley - Idaho
Posted on: July 1, 2003 by Jerry Neufeld
Brad Brown, Extension Crop Management Specialist at the UI Parma Research and Extension Center is hosting a Small Grains Field Day on Tuesday July 8. Topics of discussion on the tour will be variety performance, malting barley issues, barley fractionation, cereal leaf beetle and other small grain issues. The tour starts at 9:00 a.m. at the Parma R and E Center and will end at noon with a lunch sponsored by the Idaho Grain Producers Association.
Green peach aphids found
Potato Magic Valley
Posted on: June 27, 2003 by Jeff Miller
Green peach aphids have been positively identified in both Cassia and Power counties in commercial potato fields. Intensive scouting should be performed and insecticide programs may need to be initiated, depending on cultivar, destination of crop, and previous (at planting or at hilling) insecticide use. Please contact University of Idaho Extension personnel with any specific questions.
Malheur Experiment Station Field Day
Announcements Treasure Valley - Idaho
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Malheur Experiment Station Field Day
Announcements Treasure Valley - Oregon
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Malheur Experiment Station Field Day
Announcements All Locations
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
