Amendment to 1995 Imidacloprid Labels
Imidacloprid (Admire 2F, Provado 1.6F) is now registered for use on a number of vegetable crops in addition to potatoes. One should check the label carefully for restrictions, but Admire can be applied in furrow, in a band, as a drench or ... [... more]
Virginia Tech Extension |
Managing Residual Nitrogen After Irish Potato
The quantity of unused or residual nitrogen left in the soil after the potato crop is harvested depends upon several factors, including the rainfall prior to and during the growing season, the quantity of fertilizer nitrogen applied and the ... [... more]
Virginia Tech Extension |
Late Blight Disease Update
Late blight of potato, caused by the fungus Phytopthora infestans, became a problem in 1995 in Virginia for the first time in about 15 years. Approximately 20% of the potato acreage on the Eastern Shore of Virginia was affected. Fortunately, ... [... more]
Virginia Tech Extension |
Wireworm Control in Irish Potatoes
Wireworms can be a serious pest of Irish potatoes. These soil-inhabiting insects damage potatoes by penetrating into the potato tuber as they feed. Damage by wireworms must be kept to a minimum because the tolerance level for total external tuber ... [... more]
Virginia Tech Extension |
New Problems with Potato and Tomato Late Blight
Late blight (Phytophthora infestans) has suddenly become a major concern in most potato producing areas of the United States. This disease, which has been manageable for a number of years has become extremely difficult to control. Complicating ... [... more]
Virginia Tech Extension |
Red-Skinned Potatoes -- Strengths and Weaknesses
Fresh market potato growers can expand their product mix by growing red-skinned cultivars in addition to round-whites. However, success in growing red-skins is influenced by the grower's production management strategy and by selection of ... [... more]
Virginia Tech Extension |
Late Blight and the Potato Crop of 1995
Late blight (Phytophthora infestans) was first identified from Northampton County on June 12. Samples were sent to the USDA Laboratory in Beltsville, Md., and the Pennsylvania Department of Agriculture in Harrisburg, to be identified as to which ... [... more]
Virginia Tech Extension |
Late Blight and the 1996 Potato Crop
Late blight (Phytophthora infestans) was found on June 12, 1995 in Northampton County for the first time in about 20 years. The fungus was US#8 type of the A-2 strain which is metalaxyl resistant. The US#8 type will infect only potatoes and does ... [... more]
Virginia Tech Extension |
Up and Coming Potato Varieties
Increasing grower concern about the early dying syndrome of Superior and shifts in marketing opportunities have resulted in heightened interest in new or recently released varieties. Planting varieties that are resistant to Verticillium wilt may ... [... more]
Virginia Tech Extension |
Control of European Corn Borer in Potatoes
The new insecticides containing imidacloprid (Admire, Provado: Bayer) enable eastern Virginia potato growers to achieve nearly season long Colorado potato beetle (CPB) control with either a single application of Admire in furrow at planting or ... [... more]
Virginia Tech Extension |
No-Till Production of Irish Potato on Raised Beds
In an extensive review of organic mulches applied on conventionally tilled fields, Dutton (The Mulching of Vegetable, 1957) concluded that: 1) organic mulches such as hay and straw often increased both yield and quality of Irish potato (Solanum ... [... more]
Virginia Tech Extension |
Commercial Horticulture Newsletter, January - February 1997
Potential of Transgenic (Bt) Superior for Commercial Production in Virginia The use of potato varieties with that possess Bt resistance to Colorado Potato Beetle may be a potential pest management strategy for some growers or in specific ... [... more]
Virginia Tech Extension |
