Home > TNN Industries develop new potato seed treatment to reduce Potato Scab in crops

TNN Industries develop new potato seed treatment to reduce Potato Scab in crops

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Experimentation has been undertaken overseas since 1998 to study the effects of various organic preparations on the reduction of plant pathogens in soil that cause potato crop damage, such as Potato Scab and Verticillium Wilt.

Research and development conducted by TNN Industries at Stanhope, Victoria, has resulted in a potato seed treatment and soil inoculant that uses Ammonium Lignosulphonate to displace detrimental organisms such as plant pathogens.

Results obtained over a wide range of properly conducted trials and experiments incorporating Ammonium Lignosulphonate organic preparations between 1998 and 2001 were very exciting.

In all cases where Ammonium Lignosulphonate was the principal organic ingredient, beneficial soil micro-organism populations increased in 14 days from 300 million to 100 billion bacteria/g soil, and plant pathogen populations dramatically decreased. Results showed that in the crops treated there was an average reduction of 84% in Potato Scab and 50% in Verticillium Wilt.

Ammonium Lignosulphonate is a by-product of the pulp and paper industry. It contains a high nitrogen and carbon content, and has the potential to be used as organic matter in soil to invariably alter the micro-biology. The microorganisms that can utilise the energy of the incorporated organic material have an increase in population.

Under ideal conditions the micro-organisms that grow are either directly beneficial to plant growth or are indirectly beneficial, in that they displace detrimental organisms such as plant pathogens.

Developing a cost effective preparation and method to utilise the powerful properties of Ammonium Lignosulphonate for the benefit of the potato industry has been very elusive to date. However, research and development conducted by TNN Industries has resulted in a potato seed treatment and soil inoculant that incorporates Ammonium Lignosulphonate as a major component.

TNN Industries recommend that the potato seed treatment be applied in a first and second stage. The first stage application should be of a diluted product and added to the soil during final preparation for planting. This should be 4L of concentrate with water per Ha three to four weeks prior to planting.

The second stage application should be of the concentrated potato seed treatment and applied to the seed just prior to or during the actual planting operation. The potato grower may elect to carry out only a single stage two application only.

TNN recommend inclusion of the first stage for soil preparation. However, growers may elect to dispense with this first stage and proceed directly to the second stage depending on local climate conditions at the time.

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