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VOL. 7, ISSUE 4 (2025)
Effect of plant nutrient sources on availability of N, P, & K in soil
Authors
Shubham Chauhan, Kedar Nath Rai, Trilok Nath Rai, Sanjeev Kumar Rai, Jyoti Rai
Abstract
An investigation was carried out to study the
“Effect of Plant Nutrient Sources on availability of N, P, & K in soil”
under incubation in the Department of Soil Science and
Agricultural Chemistry, KNIPSS, Sultanpur, Uttar-pradesh. The experiment
was 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 was applied 15 days before incubation study. The effect of recommended
doses of fertilizers in addition to organic manures of different sources
equivalent 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
additionl 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 day 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 under incubation study.
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Pages:56-62
How to cite this article:
Shubham Chauhan, Kedar Nath Rai, Trilok Nath Rai, Sanjeev Kumar Rai, Jyoti Rai "Effect of plant nutrient sources on availability of N, P, & K in soil". International Journal of Agriculture and Plant Science, Vol 7, Issue 4, 2025, Pages 56-62
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