Spiral Roots What is Spiral Root Negative Geotropism

Spiral Roots

What is Spiral Root? Negative Geotropism Diagram shows particles gravitating to bottom where they influence hormonal actions that slows growth on the underside causing the root to curve downward as the upper side continues to grow.

Over Packing n n Saturation of media Heavy tray u 200 cell tray = 8. 3 lbs n n Tray sinks lower into water Spiral Root

Effects of Over Packing on Spiral Root

Factors that Influence Spiral Root Media u Varies by brand u May change from year to year n Pellet u Unpredictable How do these factors n Weather Influence spiral Root? u Inconsistent u Moderately predictable n

How is a pellet made n Coating u Diatomaceous earth t Main Ingredient u Binding agent u Etc. Diatoms

What factors influence pellet performance? n Positive n Negative u Melt down coat u Hard Seed Coat u Less drying conditions u Drying Conditions t Cloudy, cooler t Sunny, hot conditions weather u Optimum wicking media u Poor Wicking Media u Good seed/soil contact t Initial moisture t Agri-mate t Wetting agent t Double Dibbling t Over packing u Overhead Irrigation

How does roots respond to a damaged root cap?

What happens to the root cap of a seed that has enough moisture to germinate, but not enough to break out of the pellet

Effect of Agri-mate on germination

Effect of Agri-mate on spiral root

Effect of Agri-mate on useable plants

Agri-mate rates 0 g/cell 0. 02 g 0. 04 g 0. 06 g

Proper distribution of Agrimate

Effect of covering on seed germination 2002

Effect of covering on spiral root 2002