COMFREY/STRAW MULTI-PURPOSE COMP
Posted: Thu Nov 29, 2007 11:52 pm
For many long years I had thought it possible to make a multi-purpose compost using Barley straw as the bulking agent and comfrey as the nutritional agent and composting initiator and after many years and many disasters in 2002 I finally succeeded. Sadly due to circumstances beyond my control 2007 was the first opportunity I had to complete the experiment and grow a crop from start to finish using only the MP compost and a few additional feeds of Comfrey concentrate.
Although straw is used for animal bedding it is not at all absorbent and Comfrey Goo simple runs through it and you are left with an awful mess that attracts flies and is quite odiferous. I had tried chopped straw but even that is not absorbent enough so in desperation more than anything else I pulverized some straw bales using a hedge flail
And then passed it all through a high powered shredder a couple of times. (The size was dust to about 4mm)Six inches of pulverized straw becomes absorbent enough to compost Comfrey over the top and not run out at the bottom. As the straw is becoming saturated another six inch layer of straw and so on until the bin is full. Six inches eventually reduces to just less than two inches. My bin is 72”x72”x48” and it took me the entire season to fill the bin. Although I didn’t use the compost until 2007 I took core samples in 2003 and 2004 and it could have been used then.
In 2007 I was able to carry out the long awaited experiment and grew 20 Shirley F1 tomatoes in home made grow bags each holding approx 45L of compost. I also grew 4 Shirley F1 Tomatoes conventionally for comparison. Both were late sown and grew extremely fast. I used sifted compost for the seeding and normal MP compost for the comparisons. The differences were very marked throughout their lives and you would scarce believe that they were the same plant from seed out of the same packet.
I took the last of the crop to the Malvern Autumn Show picnic and although the Tomatoes all disappeared when I asked, on forum, for comments I got no takers so I guess I fell at the last hurdle and failed.
JB.
PS Details of the bin are available if required.
Details of differences in the plants available if required.
Although straw is used for animal bedding it is not at all absorbent and Comfrey Goo simple runs through it and you are left with an awful mess that attracts flies and is quite odiferous. I had tried chopped straw but even that is not absorbent enough so in desperation more than anything else I pulverized some straw bales using a hedge flail
And then passed it all through a high powered shredder a couple of times. (The size was dust to about 4mm)Six inches of pulverized straw becomes absorbent enough to compost Comfrey over the top and not run out at the bottom. As the straw is becoming saturated another six inch layer of straw and so on until the bin is full. Six inches eventually reduces to just less than two inches. My bin is 72”x72”x48” and it took me the entire season to fill the bin. Although I didn’t use the compost until 2007 I took core samples in 2003 and 2004 and it could have been used then.
In 2007 I was able to carry out the long awaited experiment and grew 20 Shirley F1 tomatoes in home made grow bags each holding approx 45L of compost. I also grew 4 Shirley F1 Tomatoes conventionally for comparison. Both were late sown and grew extremely fast. I used sifted compost for the seeding and normal MP compost for the comparisons. The differences were very marked throughout their lives and you would scarce believe that they were the same plant from seed out of the same packet.
I took the last of the crop to the Malvern Autumn Show picnic and although the Tomatoes all disappeared when I asked, on forum, for comments I got no takers so I guess I fell at the last hurdle and failed.
JB.
PS Details of the bin are available if required.
Details of differences in the plants available if required.