Archives for April 2014

April 8, 2014

Early-season Pythium and Phytophthora Control in Pepper & Tomato

With the wet spring we’ve had thus far, it’s easy to see the potential for Pythium and Phytophthora problems to develop once transplanting begins.

Unlike in the past, there currently are a number of good options for early season control of these pathogens, it just takes a little bit more planning ahead of time.

Options for pre-transplant applications include a Ranman (cyazofamid, 21) drench one week before transplanting for Pythium in tomatoes; as well as Previcur Flex (propamocarb HCL, 28) for the suppression of Pythium and Phytopthora in tomatoes and peppers. Phosphite fungicides, such as ProPhyt, Rampart, and K-Phite (FRAC code 33) can also be applied as a pre-transplant drench in the greenhouse on many crops. [Read more…]

Filed Under: Vegetable Crops
April 8, 2014

Vegetable Disease Update – 4/8/14

WhiteMold

White Mold (Lettuce)

  • Asparagus
  • Cabbage
  • Cole crops
  • Leeks
  • Lettuce

Asparagus

Phytophthora crown and spear rot – In fields with low spots (poorly drained soils) or fields with a history of crown and/or spear rot apply Ridomil Gold 4SL (mefenoxam, 4) at 1.0 pt/A, or Ultra Flourish 2E/A (mefenoxam, 4) at 2.0 pt/A, or MetaStar 2E (metalaxyl, 4) at 2.0 qt/A over beds just before 1st harvest. For new plantings, apply the same after planting or after crown covering. Do not apply Ridomil or MetaStar one day prior to harvest or illegal residues may result. For more information please see 2014 New Jersey Commercial Vegetable Production Recommendations Guide. [Read more…]

Filed Under: Vegetable Crops
April 8, 2014

Controlling Septoria Leaf Spot in Parsley

Septoria leaf spot (SLS) in Parsley can cause significant losses in fields where it has become established. Like other Septoria’s, the leaf spots produced on parsley look much like the leaf spots produced on tomatoes and other crops. Septoria leaf spot overwinters from year to year on infected debris so long crop rotations of 2 or more years are important to help reduce disease pressure. During the season, SLS will spread rapidly with each subsequent rainfall and/or overhead irrigation event. Therefore, early detection and preventative fungicide applications are key to successfully controlling SLS. Unfortunately, very few fungicides are currently labeled making control difficult.

Parsley SLS

Septoria leaf spot of Parsley

[Read more…]

Filed Under: Vegetable Crops Tagged With: ,
April 8, 2014

Turf Green-up Underway

It has been a long winter and delayed spring this year but yesterday’s rain and that of two weekends ago has “primed the pump” and initiated new growth of many turfgrasses and other plants. Thus, there is no more time to put off yard clean-up. Any leaves, branches and other debris dropped and blown around during the winter should be removed from turfs and other lowing growing landscape plantings. Otherwise early spring growth of plants will be impeded by any debris smothering those plants.

Turf-Green-Up [Read more…]

Filed Under: Turf
April 7, 2014

Annual Weed Control in Vineyards

The program for the control of annual weeds in the vineyard should consider the weed free strip under the trellis and the sod middles between the rows separately.

Good weed control eliminates competition, improves air circulation, and fungicide and insecticide coverage.

Good weed control eliminates weed competition, improves air circulation, and fungicide and insecticide spray coverage.


The “Weed Control Season” starts in late fall, after harvest.  The program implemented in the spring depends on what herbicides were applied the previous fall.  If herbicides were applied in late fall, applications can be delayed until later in the spring.  Residual herbicides should be applied in late winter or early spring after the soil is no longer frozen, if no late fall treatment was applied. [Read more…]

Filed Under: Wine Grape
April 7, 2014

Lettuce Weed Control

Work continues to progress toward reinstating the Kerb label for leaf lettuce, but has not been completed and is not expected to be completed in time for use in this year. [Read more…]

Filed Under: Vegetable Crops