Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan--News-News

News

print Mail to your friends | Share to Facebook(Open New Window) Twitter(Open New Window) Google+(Open New Window)
Seedling Dipping Technique to Avoid Pest Intrusion
2017-09-21
  

    By using a simple seedling dipping process can get rid of key arthropod pests such as spider mites, aphids, whiteflies, etc. This treatment can avoid the pests coming along with seedlings, and ensure the pest-free status in cultivation areas.

Materials & Methods:

(1). Dipping solution: 200~300 times dilution of the formulated “Plant oils mixture”.

(2). Duration of dipping: One second is sufficient. Both the medium and seedlings must be thoroughly submerged. Phytotoxicity may be resulted if prolong the dipping duration.

(3). Phytotoxicity test: A pretest must be conducted to make sure no phytotoxicity occurred within 48 hrs. Once it is confirmed, dipping treatment can then be applied for massive seedlings.

(4). Notes: Dipping treatment must be done outside the garden, and move the treated seedlings into the garden A.S.A.P.

Slightly bend the nursery plate to prevent seedling floating, and completely submerged for 1 sec
Slightly bend the nursery plate to prevent seedling floating, and completely submerged for 1 sec.

Control efficacy
Pests (effective stage) No of pest employed Mortality (%)
Bemisia argentifolii (egg to nymph) 550.0 ± 58.6 100
Aphis gossypii (nymph to adult) 33.5 ± 6.8 100
Tetranychus urticae (egg to adult) 52.8 ± 22.8 100
Tetranychus kanzawai (egg to adult) 24.3 ± 5.7 100

Shrinkage or swollen body of pests (aphid; thrips; spider mite)
Shrinkage or swollen body of pests