NOGALL Biological Control Treatment


Each 250g pack of NOGALL product contains a pure culture of a minimum of 250 billion viable cells of the non-pathogenic soil bacterium Rhizobium rhizogenes (formerly Agrobacterium radiobacter), strain K1026, contained in a pre-sterilised, microfine peat medium.  Strain K1026 cells can colonise wounded plant tissue and block infections by the predominant crown gall-causing pathogenic agrobacteria that infect nut trees (almonds, walnuts, etc), stone fruit trees (peach, plum, apricot, cherry, etc), roses, euonymus, several caneberries and many other horticultural crops.

Strain K1026 in NOGALL is special because it was developed to protect against the risk of genetic transfer (conjugation) of the antibiotic producing plasmid from K1026 to pathogenic agrobacteria.   This blocks the chance for immunity buildup in the pathogenic agrobacteria and thus protects the long-term effective use of this unique biocontrol agent.   Just like overuse of human antibiotics can lead to immunity problems with infectious microorganisms,  K84 has the potential to do the same,  then crown gall control is lost with this agent.  K1026 protects against immunity buildup within tumour causing agrobacteria.

Plant nurseries worldwide have benefited from its ability to control crown gall infections for several decades now.  NOGALL is a robust product, proved highly effective over many years, has a long shelf-life, can be ordered well ahead of time and stored in a refrigerator, is easy to use and is safe for humans, animals, birds, insects, aquatic organisms and the environment.  With treatment costings from as little as 2-20 cents per plant, NOGALL provides a cheap and effective way to combat crown gall disease.

The peat based formulation of NOGALL provides:

  • over 1,000 million viable cells of Rhizobium rhizogenes (formerly Agrobacterium radiobacter) strain K1026 per gram of NOGALL equivalent to over 20 million K1026 bacteria / ml of dip solution;
  • each 250g pack, when mixed into a slurry with cool, clean, non-chlorinated water, treats from 2,000-5,000 cuttings, or 1,000-2,500 bare-rooted seedlings with 4-6 mm stem diameter, or 200-500 bare rooted saplings with stem diameter of about 8-10 mm, or up to 17 kg of seeds, depending on seed size.
  • a growth medium that provides great stability of high populations so cultures can be stored for several months before use;
  • additives to improve dip stability and better adhesion to plant material;
  • good survival of NOGALL bacteria once they are applied to plant material;
  • good tolerances to temperature fluctuations during transport and storage;
  • robust packaging for ease of transport and handling;
  • nurserymen can order NOGALL well in advance and store the product in a domestic refrigerator until required;
  • control of crown gall in a range of hosts including stone fruit trees (cheery, peach, plum, apricot, nectarine...) nut trees, (almond, walnut,pecan....), roses, euonymus, several caneberries and other horticultural crops.
Peat particles in NOGALL cultures

Do not expose NOGALL cultures to:

  • extreme temperatures for prolonged periods (e.g. over 27ºC or 80ºF);
  • direct sunlight (UV light destroys the bacteria; or
  • pesticides, fertilisers and chemicals which may harm the NOGALL bacteria.