Monday 14 December 2015

SHL Tips #2: Increasing the chances of germinating seeds and having healthy seedlings

At the farm, growing seedlings is one of our key activities.  We are continuously sowing seeds in our effort to have a continuous supply of vegetables and fruits.  For the moment, we rely on commercial seeds for all 50% of our vegetables and the rest are farm produced.

What we find at the farm, the two major factors for successfully germinating seeds is the quality of the seeds and composition of the germination medium.  Hence I experimented with various types of germination medium with the aim to have one that is cost-effective and easy for us - both from the preparation as well as the maintenance throughout the germination and production of a healthy seedling.

Our germination medium comprises of the following 4 elements:
  1. organic mulch
  2. soil mix
  3. vermicompost
  4. chicken manure
Each of the element plays an important role in increasing the success rate of seed germination and healthy seedlings.  The organic mulch helps in maintaining the moisture content in the mix and
preventing the mix from drying out and keeping the mix light.  The soil mix contains soil and burnt soil to create the base for the root growth that also contains nutrients.  Vermicompost is a good source of nutrients as well as beneficial organisms for the seedling growth.  Apart from providing nutrients to the seedlings, chicken manure contains the key element for a healthy root growth - phosphorous. 
When placing the seeds, it is important to place them at the right depth.  In general, the larger the seed, the deeper it is.  Whilst placing the seed at a lesser depth can still result in germination, it will cause the root to form too close to the surface resulting in a seedling that is not well-rooted hence it can topple easily.

A layer of mulch mixed with chicken manure and soil (7:1:2) is placed on top to further reduce the water evaporation rate.  This will also help keep a continuous supply of nutrients to the seedling as the mixture breaks down thereby not requiring further fertilisation until transplanting.

With moist - not soggy- germination medium rich in the essential ingredients, a healthy seedling with good root growth can be produced.  It is important to have a healthy root growth in order to produce a healthy plant as the root system is the key mechanism for the plant to "eat and drink".

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