My growing programme is based on the ideas of Dr Barrie Machin. Dr Machin has kindly agreed to the inclusion of my interpretation of his ideas and methods.
This page is closely related to the Soil Analysis page. To begin with I will try to give an explanation for the following diagram.
The optimum levels for chrysanthemum growth is considered to be 200ppm Nitrogen and 200ppm Potash for all stages.
The start point for this approach is to have
the following parts per million present in the growing medium at planting out:
The feeding program is based on liquid feeding with a solution containing 275ppm Nitrogen and 100 ppm Potash. This will gradually bring up the nitrogen content in the growing medium to the optimum 200ppm, and will maintain the potash level. Of course it is necessary to understand how to calculate the strength of liquid feeds. There is a separate page that explains this: Calculating Liquid Feeds.
Typically, with other methods, all feeding stops at the point where the buds begin to show colour. This approach advocates feeding continuously through bud and bloom development. The diagram shows both nitrogen and potash levels declining when feeding stops. This is referred to as the area of 'lost potential' of bloom size and quality.
There are risks, but ' nothing ventured - nothing gained'!
The following sections summarise Dr Machin's ideas.
KEEPING THINGS IN PERSPECTIVE
WHO DARES WINS!
Based on Barrie Machin's article in the National Chrysanthemum Society Year Book 1995
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Last updated on 16 December, 2001