Farming News - Make use of soil conditioners to maximise soil fertility post-harvest
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Make use of soil conditioners to maximise soil fertility post-harvest
Make use of soil conditioners to maximise soil fertility post-harvest
Growers are being urged to take advantage of soil conditioners to
maximise organic matter use, optimise seed bed quality and secure crop
establishment.
With harvest wrapping up across the country, David Newton, technical
product manager at Timac Agro UK, encourages farmers to turn their focus
to autumn nutrition, by prioritising readily available organic matter.
He says: "One quick and easy way to maximise existing organic matter, is
to make use of crop residues, making sure the initial decomposition is
as quick and complete as possible".
"Crop residues provide a fantastic source of nutrients to our soils and
help maintain their structure, adding to organic matter reserves at the
same time as releasing valuable nutrients.
"As the fresh organic matter breaks down, it releases key elements, such
as nitrogen, phosphorus (P), and potassium (K), as well as valuable
micronutrients.
"However, straw has a naturally high carbon to nitrogen (C-N) ratio,
which requires microbial decomposers to secure an extra supply of
nitrogen (N) to break down in the first place, at the expense of
following crops."
Mr Newton suggests integrating a soil conditioner into nutritional plans
to aid the breakdown of the organic material and speed up
mineralisation, to really maximise its benefits.
Mineralisation converts essential nutrients, such as nitrogen,
phosphorus and potassium from complex organic forms into inorganic
minerals that the plant can absorb.
"Traditionally, you'd have to apply around 30-35 kg/ha of nitrogen to
stubbles to overcome N-deficit caused by breaking down highly fibrous
material," he says.
Explaining that autumn nitrogen application is prohibited on most
stubbles, with the exception certain ncrops such as oilseed rape, this
microbial boost needs to be sourced elsewhere.
"In soils with a good level of organic matter, or where high C-N ratio
material is present, such as straw, sawdust or woodchip, a soil
conditioner will help to reduce the nitrogen deficit," he adds.
"I recommend our seaweed-based soil conditioner, Humistart+. Its
microbial feed and yeast extracts along with marine calcium, support the
rapid breakdown of organic matter without any need for added nitrogen."
"It helps mineralise nitrogen already in the soil, making it available
for the following crop, while making P more soluble to stimulate early
root growth once the next crop is in the ground," he says.
"In trials, we've seen situations where nitrogen use can be reduced by
over 50kg per hectare when using Humistart+, in addition to the wider
benefits of using a soil conditioner."
Soil conditioners have the added benefit of improving soil structure for
the following crop, while also being far more environmentally friendly
than applying additional nitrogen.
On top of this, Mr Newton says that as organic matter breaks down, it
fuels microbial activity which is vital for nutrient cycling, disease
resilience and overall soil fertility.
For more information, please visit uk.timacagro.com