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Archive for January, 2010
Wednesday, January 27th, 2010
There have been changes in the climate since the Earth formed. Ice ages are a good example. They were probably caused by fluctuations in greenhouse gases and radiation from the Sun. Just like today.
Science does not prove things one way or the other. Scientists leave proof to mathematicians. Science does not deal in facts although lots of scientists would argue with that. Good scientists go with the data, their measurements and try to interpret them as reasonably as possible.
Let me give you an example. I could grow a row of peas measure their height and the weight of peas I got from them. I could measure the amount of nutrient added to the soil. I could relate that to the weight of peas obtained. Yet you could come along and say you don’t believe in my peas and you are not going to look at the measurements because the peas do not exist. Your belief does not alter the existence of the peas one way or the other. The problem comes when your belief makes you walk across my allotment as if the peas were not there and destroy them all.
Science does not prove things; it just interprets data, hopefully reasonably.
Bad data produces bad interpretation. Any scientist worth their salt would have questioned, and did question, the Himalaya assertions. I don’t think that they based their report on any scientific data whatsoever. They just believed it to be so.
But it was basic physics that enabled us to question those assertions. Questioning data is a fundamental part of science and is going on all the time not just with silly assertions about Himalayan glaciers. That’s what they were doing in the leaked emails. They were talking about how they were going to challenge someone’s data. Very legitimate part of science.
How could you do it any other way without waiting until 2030? You cannot use science to shoot science down.
Fiddling the facts is not part of science. It may be part of corporate business, government spin, and people’s financial gain. Again, though just because they are doing this does not change the data. The measurements are the measurements. People are wrong to do it and there are a lot of scientists out there that are much cleverer than I am that will shout their objections very loudly; just as they did with cold fusion. To say that things are not happening because you believe a tabloid newspaper or Jeremy Clarkson does not alter the data either. The truth will out…
The most reasonable interpretation of the data is that the climate is warming. Don’t take my word for it just look at the graphs on http://www.realclimate.org/ for yourself. I would wish a lot more people looked at the data for themselves rather than rely on a television presenter for their views. There is also increasing evidence that human activity has caused this temperature increase. There is further evidence that this increase in global temperatures is affecting low lying ocean islands due to rise in sea levels. Expansion of the Sahara desert in Africa is a lot more serious than whether you have to pay more tax for your lawn mower petrol.
This is just the beginning. As Jesus said: there is none so blind as those that cannot see.
Posted in climate change, science | No Comments »
Sunday, January 24th, 2010
Potatoes straight from the ground are beautiful. With a little freshly picked mint and sometimes with a little butter you will rarely taste anything more wonderful. If you can serve them up with a few carrots and freshly podded peas, you could want for nothing more.
As for breaking up the ground - potatoes don’t break up the ground - you do; digging in manure, digging trenches, and hoeing them up. However all this exercise produces some lovely vegetables.
I never water my potatoes and get some fairly big ones. The RHS did some research a few years back and found that watering vegetables did increase their weight and size. If you can I would water them at least twice a week, however this depends on how many you have. It would be impractical for me to water because I have so many. We cannot use hoses or sprinklers.
I have rubbed off all the eyes in past years and got a really good crop. I only do it if the shoots become drawn - I left my seed potatoes in the dark one year and they produced long white stems. I have also reduced the number of eyes to two or three in the past. I think that this helps to produce larger spuds but that might just be me whishfully thinking. I wouldn’t rub them off if they are the small,dark green ones.
I always put my late potatoes in before my earlies . That way they get a good long maturing period. I try to plant when there is less chance of frost. Early April maybe.
Posted in potatoes | 2 Comments »
Friday, January 22nd, 2010
There is a difference between humus and dead organic matter in the soil. Humus is a dark coloured amorphous colloidal liquidy material that leeches out of a compost heap. It seems to have a very complicated chemical make up and is formed when dead plants and animals decay. Animal excrement also seems to be important in its formation. By animals I mean all the mini beasts that live in the litter. It is a colloid and this enables it to retain water and this helps to improve the water holding capacity of the soil. A colloid is a mixture but not exactly a solution of one finely divided material suspended within another material. Humus is usually a colloidal solution. Humus also increases soil fertility and makes it more friable. Humus that is made from more acidic materials such as coniferous trees is called mor. This type of compost is made mainly by fungi decomposing the material. Humus that is more akaline is called mull and is the type that is more likely to be found in allotment soil. Mull is much more likely to encourage earthworms and other small soil organisms.
Really this is what we want to obtain from the compost heap. When the heap goes that friable black soil like material it contains a lot of humus. Putting it on the soil allows microorganisms to finish off the decomposition and turn the humus into nutrients. However, this is a very long process and some material will spend years if not centuries locked up in the soil.
Posted in composting, allotment | No Comments »
Wednesday, January 20th, 2010
Why would anyone want to go to the trouble of making raised beds if they don’t need to? The only reasons that I can come up with is to help to drain the allotment or for people who cannot bend down easily.
I have raised the whole of my allotment to get running water off it. Being near the top of a hill means that springs emerge in several places. I have burried two 6 inch diameter pipes across the allotment to drain them and with 3 soak aways under the paths this is coping with the water and the top is rarely too wet to walk on.
In the past I have sunk up to the top of my wellingtons, if not more, at this time of year. Eric suggested a long time ago that I should raise the allotment with upright slabs. They were more than adequate. The only downside of them is that they allow little trickles of soil to escape through the joins. This really is skirting around the fact that they are blooming heavy and take a lot of heaving about to get them planted in into the soil with any kind of asthetic effect. I would not advise you to do this particulary around a 30 by90 allotment.
At its lowest the allotment is about 18 inches above the trackway. At its highest it is about 2ft above the trackway, although where I have burried the brushwood it is much higher in the middle of the allotment. It looks quite dome shaped. The streams bubble out under the slabs and onto the path so you can imagine the state of the path at the moment. Still it keeps the nutters off the allotments because they don’t like walking through quagmire.
One of my next jobs is to take all the slabs out along the path to the tap and make sure that this bed is square. It is really irritating that, when planting rows of vegetables there is a triangle of soil that is useless to plant in effectively and is left to the weeds. I just need to straighten up this bed and then I will move the path over a little. This old path was laid on top soil so I am going to take a spit out where the path is going to go and replace it with stones removed from the Council soil. Both Don and Tony, who got the Council soil too, have been removing stones avidly and leaving them by my allotment. I will have plenty especially as I am going to bury the old greenhouse concrete foundations too. I will use the topsoil to raise where the greenhouse used to be because it is a little low. I might put slabs along the other side of the path too because this soil is getting high and falling onto the path in places. It will get even worse when I take out the apple mint and the raspberries.
I have got to find somewhere good for the apple mint. I planted it here because, when I walk up to the tap, I crush some of the mint leaves and it smells really good.
Aromatherapy - gardeners had this a long time before it got fashionable.
Which brings me back to raised beds - as opposed to raised allotments. Is this just a fashion too or is there some good horticultural reason for using them. There are too many paths for me to be doing with. If I am paying for the ground I want the maximum to be for growing. I have three paths. One to the tap and used to be to the greenhouse before I took it down. Another is to the new shed. The third is to two big water buts and along the raspberry row.
So why raised beds? Has anyone done any comparison of yeild from raised verses ground level gardening? Is there a relationship between the hight off the ground and the yeild you get from the raised bed? Should we be building 8ft, 12ft or higher beds? Should we be putting vegetables into a large wooden box and raise it up into the air with a tower crane? Should we be suspending raised bed boxes from hot air balloons. Maybe the best effects would be on the Space Station… What do I know? I’m just a simple allotment gardener. Keep talking bull shit - it is good for the allotment, Tone.
I woudl suggest, and I only have anecdotal evidence for ths, that gardeners that go to all the trouble of making wooden skirts for their beds are also those that have a lot of time on their hands and spend it carefully cultivating their works of art. If you are going to all the trouble of making easy access beds then you are going to make sure that you easily access them as often as you possibly can. This is what produces large yeilds of beautiful vegetables.
In my opinion yeild is all down to the enthusiasm of the gardener. Those that put the hard work in will reap the rewards of a good harvest. And this will be regarless of elevation.
Which brings me to Roundup…
New allotmenteers are sometimes discouraged because their allotments are covered in brambles, nettles and couch grass.
There seems to be three camps for allotment clearing.
- Spray, slash and burn
- Cover with black plastic and wait for a couple of years.
- Do a bit of gardening and dig the weeds out. It is harder work but far more satisfying.
So, what do we have an allotment for? Do we put in that much work for chemical covered vegetables that we could easily buy down at the nearest supermarket? Do we go down to the allotment to breath in noxious chemicals that we can easily breath in down by the nearest main road?
I would rather put my hands in good rich soil that is not contaminated by man made chemicals. I would rather eat vegetables that do not have to grow in contaminated soil.
I am in the hard work camp. Get your spade and fork out and do some graft.
Now some will moan that they do not have time to dig out all the weeds. Well if that is so, why are you cultivating an allotment in the first place because it does not get easier.
If you have no time to clear, you have no time to maintain. They are equally time consuming. Chemicals will do things sooner but why not cut out the middle man and go direct to the supermarket because you will get the same…
To all you chemical fiends - not near my allotment please.
Posted in raised beds, Montezuma method, allotment | No Comments »
Sunday, January 17th, 2010
Snow has all gone now. The water hasn’t though. Very wet.
This blog has been read by 100,200 people. Now come on folks you don’t think I have read my blog that many times…
Sometimes I despair about the way that misconceptions are readily passed on in education. I look at quite a few gardening sites and it is remarkable how many of them just repeat the same advice without any reference to where it originally came from. I think that a lot of this is self perpetuating and feeds off itself. I have just found this again on crop rotation. AHHHHHHHH! I have rotated crops every which way but loose and have never found any difference in the way that the vegetables grow. Just don’t grow the same crop in the same area year after year if you can help it. I have a six year rotation and I am fairly strict about not planting brassicas in the same place for at least 6 years.
Too many so called scientific facts are based on little empirical data or evidence. Don’t just repeat: make sure that you do it yourself or at least look at the data and make up your own mind. Science is not the recalling of facts. It is the interpretation of data and evidence. While anecdotal evidence is anecdotal at least it is evidence which can be interpreted. Repeating facts unquestioningly means that you are not making a judgement about their worth. This is the problem with the public understanding of science. People do not understand that science is not a body of facts. It is a body of best interpretation of data. And that interpretation will change as more data is obtained. The most sensible interpretation of the data is that Jeremy Clarkson, TV presenter, is wrong. Global warming is happening and human augmentation is significant.
I hear that nowadays you can become a master composter. My word, I don’t know how I could possibly have successfully gardened for fifty years without this accolade. I have been piling up vegetable matter into a heap, leaving it for a while and digging it in every year since I started gardening, when I was eight years old. Some compost was better than others and I must admit, if the layer technique; which I learnt from the old Victorian books, was used I got fairly good friable compost. However, just piling it in a heap did more or less the same job with much less time and effort needed.
Who makes up these awards and what authority do they have to hand out these qualifications?
The layer technique was:
- Put a good layer of brush wood at the bottom for drainage.
- Start the compost off with a 1 foot layer of difficult to decompose material like straw, hedge cuttings, woody perennial material, leaves and woody weeds etc.
- Next put on a 1 foot layer of easily decomposable material like annual weeds, lawn grass cuttings, vegetable peelings, cow, pig, chicken and pigeon manure etc.
- After that put 1 foot of sieved garden top soil.
- Dust the topsoil with a couple of handfuls of lime.
- Then put a new layer of difficult to decompose material maybe shredded paper this time and then repeat the process again
There were several reasons why I never was able to do this kind of composting. You never have the right kind of material at the right time. During the autumn and winter I have lots of difficult to decompose material and in the summer I have tons of the readily decomposable material. Secondly, where am I going to get good top soil to put on a compost heap? Digging holes in the allotment and using precious top soil was never an option for me. I have used poorer soil and subsoil on the compost to try and improve the soil and use it on the allotment. It has worked to some extent but it made the compost very stony.
Now I have made the heretical assertion that you should put leaves on a compost heap. Shock and horror. By leaves in this context I do mean tree leaves. For some unknown reason they should not be added to the normal compost heap but should always be composted on their own.
I think that this is because in the Victorian age the estate gardeners would use rotted tree leaves as a potting compost. It does make a really good friable medium for seed compost and when mixed with sieved topsoil and grit will make a very acceptable potting compost. Yet there is no law that states that you cannot put tree leaves on an ordinary compost heap. I have heard people say that tree leaves are rotted down by fungi. That’s true, but so is virtually all the other things that you put onto a compost heap. If you don’t believe me look at grass cuttings after they have been on the compost for a while. They have the tale, tale signs of white threads running through them.
There are few composts that will add appreciable amounts of nutrient to the soil. However, plants do not necessarily need an awful lot of nutrient. Just as long as you put back what you took out you can’t go wrong. In addition to compost from the compost heap, I add cow, horse, pigeon, sheep and goat manure when I can get it. It’s all grist to the mill.
For many years I did not have a compost heap at all. Now I have three that I put up last year. Before, I liked to bury all the compost material directly into a trench between the comfrey plants and I may continue to do this this year now that the comfrey has established itself again. I was always cautious about adding grass cuttings that people had left near the gate because you never knew what noxious substances they had been putting on their lawns. Allowing it to first be processed by comfrey plants seemed the best thing to do.
I was up the allotment today for the first time in about three weeks to do some serious work. I have been harvesting the Brussel, parsnips and leeks but doing nothing else. The bloke with the shire horses on the common brought some horse muck over and when he was tipping it out got the trailer stuck in the mud. The amount of running water on the surface is phenomenal although I have seen this before when there has been a thaw. I said that I would help by taking off as much of the horse muck as I could to lighten the trailer.
Well he tried several times to get the trailer out and it was stuck fast. He went off to get a four wheel drive big tractor while I and two other blokes from the allotment tried to offload as much as we could.
We must have emptied about a third of the trailer before he came back and it took a couple of seconds for the big tractor to extract the trailer. The rest of the manure was dropped off and he left.
I think that the new concrete bins are far too far back from the trackway and this means that the trailers need to cross the soft ground before they can be off loaded.
Still I got some manure and put it around the black current bushes. I had a good look at the bushes because I thought that I had some big bud. (Eriophyes ribis). Now I don’t think I have. They are just good big plump buds.
I think that a lot of people dig out a runner bean trench and put peelings, lawn mowings and other composty things at the bottom of it then backfill. I have done that with impunity for years, never having any problems with the beans. I may not have time to do this this year because I still have not transplanted the raspberries yet and this is where I have decided to put the runners. Having said this, I will dig a trench if I have the time. I don’t know if it makes any difference to the crop you get and I have never compared trenched with untrenched.
Some people line their trench with newspaper. I don’t do this mainly because I never remember to take newspaper up the allotment at the appropriate time.
I am sure that while the newspaper will inevitably cause nitrogen to be removed from the soil for a while, (while the bacteria are decomposing the paper) at this depth it would not adversely affect the runner beans.
What amuses me is, although these people do this for their beans, they criticise me for doing it with the whole allotment. If it is good enough for beans why is it any different for the other vegetables? I don’t use newspaper. I use brushwood. I expect it does a similar job.
My runner beans this year will be “Aintree”. It cropped really well last year and the year before. Although I do have a soft spot for “Scarlet Emperor” and grew if for a great number of years, it does not do as well as Aintree.
At about 12 o’clock today I harvested several parsnips, leeks and some brussel sprouts. They were washed and cooked by 4 this afternoon and eaten for dinner. By jove the taste was wonderful…
Makes it all worth while.
Beetroot seems to have gone over. They were affected by the snow.
Posted in beetroot, brussel sprout, raspberries, composting, Eriophyes ribis big bud mite, soft fruit, horse manure, harvest, leeks, fruit, beans, comfrey | No Comments »
Friday, January 15th, 2010
You know I really do have a great respect for the agricultural and horticultural knowledge of the ancient South American indian civilizations. I think that the jury is out as to whether the terra preta soils were deliberately produced or just resulted from humans throwing out their waste materials. I would like to think that they were making these soils consciously.
There seems to be some advantage to adding composted activated charcoal to the soil. Looking at the properties of activated charcoal, it seems to be able to adsorb large amounts of organic compounds and this characteristic seems to allow it to contribute to the fertility of the soil - for hundreds if not thousands of years. This interests me because apart from contributing to the fertility of my allotment it would also help to sequester carbon in the soil.
Now previously in these blogs I have berated people for lighting smoky fires and allowing the smoke to blow over my allotment. However, do I have to modify my opinion of fires now? I don’t think so. Charcoal burning may well be a good way of increasing and sustaining the fertility of the soil but not near my allotment.
I am told there are charcoal producers that prevent noxious fumes from venting to the atmosphere. I am dubious… However, in the spirit of scientific or at the least horticultural exploration I will indeed try composting some activated charcoal and see if it adds to the fertility of the allotment when I dig it in. Maybe I will also put some under the peas because it seems to help with the nitrogen fixing bacteria.
Snow has gone now and I am looking forward to digging on the allotment again. I will continue with my Montezuma method because I think that this will also help to sequester carbon in the soil.
Charcoal and compost I can cope with. I doubt very much if I will make my own especially if it involves burning fish and bones. How about mixing it with blood fish and bone? Worth thinking about Tone…
Posted in Terra Preta, Montezuma method, composting, mychorrhizal fungi, peas | No Comments »
Sunday, January 10th, 2010
Well this is interesting. We have not had a winter like this for years in England. When I started to garden seriously - when I was about eight years old, winters were like this. The soil was like iron and water froze solid in the butts.
Well I cannot get the leeks or the parsnips out of the ground at the moment. During the Christmas break, however, we had fresh parsnips, a few leeks, brussel sprouts, beetroot and brocolli. We also used frozen peas, maize, beans, carrots and stored pumpkin, onion and potatoes. That is twelve vegetables for Christmas lunch…
Some nutter has been pulling out my winter cauliflowers for some reason and I have lost about a row of them. Not to worry because I have another two rows.
What can you say?
All the winter digging has stopped.
The four large silver birch were taken down by friends in November. There was a large amount of brushwood and branches which I took down to the allotment. I also took down the large 5-8 cm branches. I would have taken the trunks as well but they wanted them for their log fires. I took out a line of gooseberry bushes and buried them as well. They keep on getting American mildew and I want to buy some resistant ones. I love gooseberries. I took out several of the blackcurrents as well and buried them with the gooseberries. They were very old varieties that I was given ages ago when I first got the allotment. They were not really producing very many fruit so I have replaced them with cuttings I took of the new varieties.
I dug pits three spits down carefully making sure that the layers of soil were not mixed. Now you can believe this or not but I still had top soil at this depth. The top spit was exceptionally fine and friable because I had sieved it several times over the years. I put quite a layer of brushwood, leaves and compost in the bottom of the pit. The larger branches at the very bottom and the finer pieces nearer the surface. My son had cut the smaller pieces into approximately 5cm pieces so a lot would fit into a small area. I replace the soil carefully mixing each layer using the conical pile method. If you make a pile of soil into a cone shape then each time you put another spade full of soil on the top of it, it mixes down the sides. This is how I used to mix potting composts when I worked in tomato glasshouses. Each layer was mixed like this when I put the soil back into the pit. I did not mix the layers though.
Now the conventional wisdom is that this addition of high carbon to nitrogen material will deplete the soil of nutrients. After doing this for many years, I question whether this is true in all circumstances. My new stainless steel spade has a blade about 12 inches which means that I am going down about 3 feet. At this level would decomposition cause nutrient loss? Nitrogen is used both by bacteria and fungi to make their bodies. This nitrogen must be obtained from the soil some how or other.
The bacteria could only get the nitrogen from the decomposing material itself. The fungi on the other hand could stretch out mycelium into the surrounding soil in search of nitrogen. The most likely place that they would find it is in the top 6 inches of topsoil. Would this be feasable for fungi to grow mycelium this long. Well in this though experiment, I have to say there is evidence that mycelium do grow remarkably long and this would not be unusual. So, I want to find out next year if the onions suffer with nitrogen depletion - although I have been given some free blood, fish and bone and have already put it on the winter onions, shallots and garlic. I don’t really think that burying brushwood this deep will affect the plants growing in the top soil significantly. I would like a harvest of onions that is not affected by Napomyhza gymnostoma, the onion miner fly, which is a much more pressing problem than worrying about nutrient depletion. To that end I will be covering the winter onions with enviromesh as soon as the cold whether has gone.
The effect of burying brush wood like this is to raise the allotment soil up at least 6 inches or so. The theory is that the brushwood would keep the subsoil open and porous to excess water. Where the soil has not been able to fall through the brushwood, there would be voids which water could pass through with little obstruction. This would cause the ground to be much better drained. There has not really been a water problem on this part of the allotment since just after I took it over, however I would like to make sure that the water that is on the rest of the allotment has an easy route off, and this route will also include this area now.
Another reason I think that this is will be advantagous is that the decomposition will produce heat and warm the soil. This is the theory behind the ridge for ridge cucumbers. I must admit that when I went up and tried to dig this area at the start of the very cold weather it was just as hard as any other part of the allotment. Maybe the heat had not penetrated across to the area that I was digging in. Maybe I need to wait until the spring before the bacterial and fungi start doing their job.
I must admit that the pumpkins did well on the manure pile (that I left because it was contaminated with aminopyuralid herbicide) possibly because of the heat the manure generated .
Moreover, a layer of decomposing organic matter like this could also help to prevent water loss during the summer. Evaporation from the top of the soil would cause water to rise during periods of hot dry weather due to capillary action. A thick layer of brush like this would slow this process down with any luck. Whether this is infact what will happen remains to be seen, although I think that this is the theory behind digging a bean trench and putting lots of compost at the bottom of it.
I am encouraged by finding out that the South American early civilisations used this as a method to make terraced fields and also to drain fields around lakes. These are the peoples that bred potatoes, beans, tomatoes, maize, cucumber, marrow, squashes, and many more food plants. Respect…
As my back has improved a lot, I will probably be down at the allotment as soon as the weather improves. I really hope that this cold weather will have seen off a lot of pests on the allotment. With that in mind the only reason that I want to go to the allotment at the moment is to replenish the bird feeders.
The sweet peas seem to be holding up in the greenhouse. I would have liked to transplant them into their opend ended pots before the cold weather really set in but I haven’t so we will just have to wait and hope they will survive. There is no heat in the greenhouse.
I am looking at catalogues and websites at the moment because I will have to order my seeds soon especially if I want the varieties that work on the allotment. I am going to go for kestrel and Sante potatoes again. They worked fairly well even though they had the contaminated horse manure on them. They have decided to use aminopyuralid again after banning it last year. I cannot see how they can keep it out of the manure. Still I will get some horse manure from Tony in the next few weeks. I have left a space on the allotment to pile it on. I will put it under the potatoes again because I see little benefit to leaving it to rot down for a year on a pile. I have always dug in manure fresh or not - it might as well rot down in the soil as on a heap. By the time I get around to planting the potatoes in this area the manure will have had at least threee or four months to decompose. I never find that it is so hot that it damages the plants. The only manure that I would be very careful with is pigeon because that can seriously damage the soil if put on neat. Pigeon manure will be put onto the compost heap as an accelerator - not that I have a compost heap for any lenght of time. I like to dig stuff in straight away if I have a space on the allotment. I dig it in at least two spits deep so that it does not affect the top soil.
I will put most of the compost that I have collected this year onto the bottom plot. It still needs to be raised up a lot - it has still got running water on the surface. With the very poor new soil that the council have given me, there is a big need for organic matter to be incorporated into it. It will be the area for the peas this year and this will give me the opportunity to add lots of manure and compost into the trenches before planting. I doubt that I will get such good peas this year as last. We will see…
Other jobs that I would be doing if the weather was a little more clement would be to move all the raspberries to their new home and to straighten the old path. As the allotment has been raised up, where I am going to straighen the path is about 2 feet below the soil surface. I will have to dig away some of this bed, move the soil retaining paving slabs across and then replace the soil. There may be some soil left over so I will use it to raise the ground where I took the old greenhouse down.
Posted in gooseberries., blackcurrents, beetroot, brussel sprout, cucumber, raspberries, aminopyuralid, Montezuma method, trees, greenhouse, Napomyza gymnostoma (leek miner fly), composting, garlic, cauliflower, maize, onions, pumpkin, Christmas dinner, peas, broccolli, beans, soft fruit, potatoes, horse manure, parsnips, leeks | No Comments »
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