Agriculture Reference
In-Depth Information
soil, let's move to its exploitation to minimize the emission of greenhouse
gasses; for which technical options are available and readers may consult
the relevant literature/text.
The conservation agriculture by keeping the land covered with vegeta-
tion round the year with least tillage may be an agenda to restore biodi-
versity and pedo-ecosystems. Selection of site-specific crop rotation based
on quantitative land evaluation as well as cover crops between two main
crops may need exhaustive experience with indigenous knowledge and
this may enable agricultural scientists to work with farmers together in
interactive environment. Interaction of light with soils is a new chapter
(Photopedogenesis) to be tested as a soil based indicator of climate change
(Mishra et al., 2006b; Mishra et al., 2008; Mishra and Ghanshyam, 2009).
As Janseens et al. (2003) stated, the soil is one of the important sources as
well as sinks of greenhouse gasses (GHGs) causing global warming and
climate change. It contributes about 20% to the total emission of carbon
dioxide through soil respiration and root respiration, 12% of CH4 and 60%
of anthropogenic nitrous oxide emissions (IPCC, 2007). It is presumed
that the global warming may influence global carbon cycle besides distort-
ing the structure and function of ecosystem. The GHGs virtually trap the
outgoing IR radiation from the earth's surface and raise the temperature of
the atmosphere (Pathak et al., 2007, 2009, 2012).
The challenges of global climate change are very alarming that inte-
grates earth's physical spectrum with pedogenic spectrum (earth's mass
in changing gravitational-magnetic equilibrium) as affected by chemical,
EM-nuclear, biological and anthropogenic spectrums in order to sustain the
equilibrium of dynamic global climates (Mishra and Ghanshyam, 2009).
Distorted equilibrium as caused by human interferences (man-made dis-
tortion and technologic imbalance) may lead to many catastrophic events.
Agricultural interventions may mitigate the expected earth's disturbances
by adopting the conservation agriculture, banning against land shrinkage/
land sealing. The orchards are being destroyed on way to sale the land for
construction purposes in some parts of India. There must be a legal ban
against such free practices ( Fig. 8.2 ).
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