Initial indications of humus depletion
in arable soil have been observed in almost all EU countries in recent years.
Not exact matches
There is a grave environmental crisis
in air quality (life expectancy
in polluted northern cities is five and a half years lower than
in the cleaner south), water and
soil (one survey showed that 10 per cent of
arable land was unsafe to grow crops on).
Soil organic carbon (SOC)
in arable organic farming depends on inputs
in crop residues, green manure, catch crops and animal manure.
While recent policy interventions (such as the Good Agricultural and Environment Condition requirements of the CAP, and the EU
Soil Thematic Strategy) have reduced the rate of soil loss in the EU by an average of 9.5 % overall, and by 20 % for arable lands, the study finds that four million hectares of EU croplands have unsustainable rates of soil loss (more than 5 tonnes per hectare per ye
Soil Thematic Strategy) have reduced the rate of
soil loss in the EU by an average of 9.5 % overall, and by 20 % for arable lands, the study finds that four million hectares of EU croplands have unsustainable rates of soil loss (more than 5 tonnes per hectare per ye
soil loss
in the EU by an average of 9.5 % overall, and by 20 % for
arable lands, the study finds that four million hectares of EU croplands have unsustainable rates of
soil loss (more than 5 tonnes per hectare per ye
soil loss (more than 5 tonnes per hectare per year).
The FRO2 gene is common to all plants, so boosting its expression
in food crops or finding variants that thrive
in poor
soils could be important for increasing crop yields
in the face of population growth and global warming's threats to
arable land.
Changes
in the Metagenome of Prokaryotic Community as an Indicator of Fertility of
Arable Soddy - Podzolic
Soils upon Fertilizer Application — A. N. Naliukhin — Eurasian
Soil Science
Fortunately, Wamelink has been raising crops
in simulated Martian
soil for years and found that it's surprisingly
arable — he's been able to grow potatoes, carrots, green beans, and tomatoes, as well as introduce earthworms to make the
soil more fertile.
Of course, this still doesn't fill
in many missing bits of information (such as the knowledge that even if parts of Canada or Siberia get warmer, they will not necessarily have
arable soil, or growing seasons of the proper duration (i.e. number of months with a minimum amount of sunlight per day) to make them viable for crops.
The natural variation that has led us out of the Little Ice Age has a bit of frosting on the cake by land use; and, part of that land use has resulted
in a change
in vegetation and
soil CO2 loss so that we see a rise
in CO2 and the CO2 continues to rise without a temperature accompaniment (piano player went to take a leak), as the land use has all but gobbled up most of the
arable land North of 30N and we are starting to see low till farming and some
soil conservation just beginning when the
soil will again take up the CO2, and the GMO's will increase yields, then CO2 will start coming down on its own and we can go to bed listening to Ave Maria to address another global crisis to get the populous all scared begging governments to tell us much ado about... nothing.
Importantly, depletion of SOC
in conventional agricultural fields is now thought to be an important factor constraining productivity as many
arable soils have suboptimal concentrations (Lal 2010).
Comparison of Allotment and Agricultural
Soils The remarkable contrast
in soil quality indicators (higher SOC, C: N, TN and lower BD) between allotments and
arable fields reveals the effectiveness of management achieved by own - growers.
With falling water tables, eroding
soils, and rising temperatures making it difficult to feed growing populations, control of
arable land and water resources is moving to center stage
in the global struggle for food security.
With food scarcity driven by falling water tables, eroding
soils, and rising temperatures, control of
arable land and water resources is moving to center stage
in the global struggle for food security.
To take just one fairly representative example,
in the classic Rothampstead experiments
in England where
arable land was allowed to revert to deciduous temperate woodland,
soil organic carbon increased 300 - 400 % from around 20 t / ha to 60 - 80 t / ha (or about 20 - 40 tons per acre)
in less than a century (Jenkinson & Rayner 1977).