Now showing items 1-4 of 4

    • Baiting Onion Maggot Flies with Bt 

      van der Heide, Jan; Eckenrode, Charles J. (New York State Integrated Pest Management Program, 1997)
      Laboratory studies conducted Dr. Eckenrode indicated mortalities close to 100% when adult flies were fed a 10% sugar solution laced with Bt insecticide. With present onion maggot control strategies focusing on the larval, ...
    • Effect of Barley Windbreak Placement on Onion Maggot Damage 

      van der Heide, Jan; Eckenrode, Charles J. (New York State Integrated Pest Management Program, 1997)
      In this report, we will examine the effect of the presence and absence of a barley nurse crop on the number of onion maggot flies in onion fields. We will also look at the effect of planting density of the nurse crop on ...
    • Use of Bt Bait Solutions and Beauveria for Control of Adult Onion Maggot 

      van der Heide, Jan (New York State Integrated Pest Management Program, 1998)
      Onion maggots (Delia antiqua) can cause severe production losses in onion fields in New York State, with losses reaching levels near 100% in the absence of control measures. Onion growers in New York State apply an ...
    • Use of Trichoderma for Control of Soilborne Pathogens in Onions 

      van der Heide, Jan (New York State Integrated Pest Management Program, 1997)
      Soil fungicides are only partially effective in controlling some soilborne fungal pathogens in commercial onion production, especially later in the season when fungicides applied at planting time have washed out or are no ...