Tag Archives: composting

3D’s- Direct drilling and drought

In direst drilling, getting even depth of placement and good seed-soil contact is important.

 

Some will be old enough to remember the Bettinson 3D drill.  Direct drilling went out of fashion in the early 1990’s but it is back and what a year in 2018 to start direct drilling! Drought is a killer in the seedbed and cultivations drive off water. So, this year will take a bit of managing and some luck, too. Harrow to get the weed seeds to chit.  Shower of rain, please. Green up. Spay off with glyphosate. Direct drill. Showers of rain please.  Roll if useful. Would that it were as easy as that.  However, it is still much easier than trying to get a wider range of conventional cultivations through. Direct drilling is lower cost, faster and therefore there is a timeliness gain, conserves soil moisture, over-all does give a little better yields, certainly at lower cost.

Bill Butterworth, Land Research Ltd, August 18

drought and crop yields

A lot of this, this year. Yields down too. It is largely avoidable.

A sandy soil will hold about its own weight in water.  A clay 2 or 3 times. A typical natural peat around 16 times!

A compost made from urban green waste will hold up to 10 times its own weight in water, maybe only 5 times if it is made from woody cuttings in winter (and it would have less N).  However, compost made from urban green waste plus industrial wastes will (depending on the wastes used) hold 8 to 14 times its own weight in water and possibly a lot more NPK.  Although the Environment Agency will restrict quantities, the truth is that the Fens, when Vermuyden drained them some 300 years ago, were up to 40 foot deep of almost pure compost. (Organic soils do not leak excessive N.)  It is also true that high organic, well-composted soils, can halve cultivation energy inputs and reduce chemical spraying.

So, there really should be a national policy of maximizing urban waste recycling to urban farm land. Suggest get a copy of “Survival”, read it and send a copy to your MP.

 

Bill Butterworth, Land Research Ltd, 1 August 18

Cultivation destroys organic Nitrogen

“Recreational tillage” soothes the soul but it really does dramatically increase organic mater oxidation and loss. Forcing a tilth with a power harrow is the worst offender.

The problem with forcing a tilth with power harrows, or any other cultivation tools, is that organic matter is oxidised at a rate corresponding to power input. This was first shown by Sarah Wright working at the famous USDA research centre at Beltsville in the USA. It was reinforced by research I did for ICI Plant Protection back in the 70’s and early 80’s; then, a fair guide in most soils was that conventional, high-power-input cultivations would oxidise and lose around 35 % of the humus per annum but direct drilling would limit the losses to around 10%.

There are two results of this loss which are, amongst others, worthy of note in this context.  Firstly, the more organic matter is lost, the greater the cultivation power needed next time around, leading to a declining soil structure, demanding progressively more power in a downward spiral.  Secondly, N losses progressively rise in parallel.  Further, as organic matter level falls, so does water-retaining capability.  This, in turn, allows more soluble N to be leached out.

What Michal Gove needs to do it look at the energy we could save by recycling more to land, using science-based process to encourage it, rather than allowing regulation to progressively restrict it.

Bill Butterworth, Land Research Ltd.,12  June 2018

Recycle N to land – safely

There is one fundamental rule in nature: Given enough dilution, given enough time, Nature will handle anything. The trick is to know how much dilution and how much time.  To some extent, the two factors are interchangeable.  Fortunately, humus (that complex mixture of hydrocarbons, carbo-hydrates and proteins with significant colloidal capacity) is a very effective chemical “buffer” which will smooth out release of toxins and nutrients.  There is also a biological buffer in that the mycorrhizae can be selective and take what they need (and no more) from an otherwise too high a concentration of a toxin or nutrient in a feedstock (such as compost).  These mechanisms add enormously to the safety of recycling to land.

Having said that, like all living mechanisms, don’t push it too far, knowing how far depends on reading the research, using common sense and not rushing the fence – build up slowly and learn to manage the stress in the system.

Also see “How to make on-farm composting work”, by Bill Butterworth, MX Publishing, London 1998,

Bill Butterworth, Land Research Ltd,  6 June 2018

Despite the rain now, water may cost more in future

Britain has too much rain this spring. Nevertheless, farming may pay more for its water in future.

Facing a Global Water Crisis” in a piece written by Leah Schleifer.  With credit to them, I try here to relate those lessons to British farming and maybe farming elsewhere in developed counties that do not really think water may be a significant economic problem sooner rather than later.

 Reason 6. Water Is Wasted

The water in our water main grid is “potable”, i.e. drinkable.  Yet half the water used in domestic households is used to flush toilets, enters the sewage system and is treated and dumped into rivers. It is true that some of that water may be extracted lower down the river and re-used, but this is an incredibly wasteful system.

The washing down of dairies and other livestock enterprises on farms is similarly wasteful.

Conservation farming action;

  1. Harvest water off shed roofs and concrete areas,
  2. Wash down sensibly, limiting use to what is necessary.
  3. Get everyone to remember that water is a valuable and increasingly expensive resource.

Bill Butterworth, Land Research Ltd.,  7 April 18

“Survival” for free!

Download free.

On 7th, 8th and 10th December, you can download “Survival” Sustainable Energy, Wastes Shale Gas and The Land” at Amazon Kindle for free!  Suggest do it to a big screen because of the diagrams.

Flood-prevention co-operatives

Contour farming in the China mountains. We could use the same techniques to protect lowland areas from flash flooding.

An income-earner for upland farms could be for protecting the lowlands from flash-flooding.  For flood prevention in the lowlands, an up-land flood-prevention co-op could deliver what the country needs, right now.  This can be done by a reverse-franchise set up which is less restrictive than a legal co-operative.

In a reverse franchise, a limited company is set up as the franchisor and it makes the rules.  Each farmer-franchisee gets one share (however big or small they are) in the franchisor and hence the name “reverse franchise”. The franchisor then forms a relationship with the Environment Agency to manage an upper catchment area including the mechanisms of (i) raising soil organic matter levels  using composted urban wastes from the lowlands, (ii) planting tree belts on contours to create flow barriers, and (iii) setting up sacrifice areas to hold water under extreme conditions to allow slow release.

Bill Butterworth, Land Research Ltd. 12 November 2017