| #331 |
Controlled release granules have two main types. One is controlled by moisture availability (which can be problematical if we have showery weather as all the nutrients are leached out in one go!)
The other type is temeperature controlled. If you imagine tiny golf balls filled with fertiliser which leach out from the 'dimples' as the temperature rises but if it's too cold retains the nurients as it contracts.
In my opinion the second type is better and can control release of fertiliser for up to 6 months!
My white onions that I was so impressed with last year have arrived so will be planted along with the yellow and red onions when I prepare the beds for them.
The other type is temeperature controlled. If you imagine tiny golf balls filled with fertiliser which leach out from the 'dimples' as the temperature rises but if it's too cold retains the nurients as it contracts.
In my opinion the second type is better and can control release of fertiliser for up to 6 months!
My white onions that I was so impressed with last year have arrived so will be planted along with the yellow and red onions when I prepare the beds for them.
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