ACTIVITY OF TRICHODERMA HARZIANUM RIFAI ON THE GERMINATION OF ASPARAGUS SEEDS: II – SOIL TREATMENTS

This paper examines the effects of Trichoderma harzianum Rifai ("T 581") on the germination of asparagus seeds ("UC 157 LT 869–470–2" variety) when added to the soil.

The "T 581" strain grown on potato dextrose agar medium (PDA) for seven days was brought to a 10⁵ spores/ml concentration and employed in two formulations: liquid and solid.

The biocontrol agent was added at a ratio of 26 000 spores/g to the soil which had previously been steam-sterilized.

Planting was carried out 96, 72, 48, 24 and 0 hours after adding "T 581" to the soil.

Germination percentage and the amount of dry matter produced by seedlings were evaluated.
The parameters were determined on four successive stages at four-day intervals.

The findings are then commented upon.

VII International Asparagus Symposium

S. Gennari, D. Manzali, N. D’Ercole

https://doi.org/10.17660/ActaHortic.1990.271.58