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VOL. 6, ISSUE 1 (2024)
Influence of organic and inorganic sources of nutrients on availability of major nutrients in the soil
Authors
Kedar Nath Rai, TrilokNath Rai, Sanjeev Kumar Rai, Arvind Kumar Rai
Abstract
An investigation was carried out to study the “Influence of organic and
inorganic sources of nutrients on availability of major nutrients in the soil”
under incubation in the Department of Soil Science and Agricultural Chemistry,
Institute of Agricultural Sciences, Banaras Hindu University, Varanasi,
Uttar-pradesh. The experiment were laid out in Completely Randomized Block
Design with twelve treatments replicated three times. N, P, K were applied
through urea, single super phosphate and muriate of potash, respectively. While
the total amount of organics were applied 14 days before incubation study. The
effect of recommended doses of fertilizers in addition to organic manures of
different sources equivalent to 10 kg N ha-1 and with their sole
treatments on available soil nitrogen under incubation have shown significant
variations over control (T1) at each of 0, 30, 60, 90 and 120 days
of incubation. Among the integrated treatments (T3 to T7).
Recommended doses of NPK and 10 kg N ha-1 through digested sludge (T6)
was found inferior than other. However, the highest values were recorded in T4
followed by T7 which were significantly superior over all the
treatments. There was increasing trend of available N in each treatment at each
period of incubation. However, slower increase in values of respective
treatments was observed at 120 DAI. At this days of incubation, all the
integrated treatments have shown good health of soil in terms of higher values
of available-N compare to rest of the treatments considering all the treatments
at all the period of incubation, T4 and T7 (among the
integrated treatments) and T9 and T12 (among the alone
organic treatment) have shown superiority with providing available nitrogen.
The treatments of RDF only (T2) was also effective and has shown
higher values than the organic treatments but it was significantly lesser
effective than the integrated treatments at each of the incubation period. At
par values was found in the treatments of T5,T6 and T10,
T12 respectively within integrated approaches and alone treatments
of PM and DS at all the periods of incubation. Application of organics alone
increase the available P and K content in soil under different days of
incubation study over application of chemical fertilizer (T2),
control (T1) and in combined use (T3 to T7);
the maximum being recorded in the treatments receiving 100% N through P.M (T10)
and FYM (T8), respectively as P and K (mg kg-1. soil) at
120 days of incubation. At different days of incubation most of the treatments
were shown at par with each other within the integrated and alone treatments of
organics except T10 in the case of P and T8 in the case
of K. the available P and K content of soil increased from 4.91 to 40.02 mg kg-1
and 67.31 to 114.26 mg kg-1 respectively under incubation study. The
incorporation of FYM alone (T8) improved the organic carbon
significantly as against application of rest of the treatments over long
periods of incubation at different days of intervals. Due to application of
organics alone or in combinations most of the values were shows at par among
them- selves except T8 and T3 treatment at different days
of incubation. In comparison to the O.C status of soil treated with various
organic N sources, the status of organic carbon significantly increased in the
soil treated with 100% chemical fertilizer (T2) and control (T1),
except T9 and some cases in T12. Among different days of
incubation the maximum and minimum values of O.C were recorded at 0 and 120
days of incubation, respectively.
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Pages:19-24
How to cite this article:
Kedar Nath Rai, TrilokNath Rai, Sanjeev Kumar Rai, Arvind Kumar Rai "Influence of organic and inorganic sources of nutrients on availability of major nutrients in the soil". International Journal of Agriculture and Plant Science, Vol 6, Issue 1, 2024, Pages 19-24
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