Distribution of available primary and secondary nutrients in soil profiles of mango orchards under semi arid conditions of latur (m.s.)
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Date
2009-05-16
Authors
Journal Title
Journal ISSN
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Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Abstract
An investigation was carried out to study the distribution of
available primary and secondary nutrients in soil profiles of mango orchards of
Latur district. Total 10 soil profiles at five different spacings were selected for
this experiment. From each soil profile 6 soil samples (0-15, 15-30, 30-45, 45-
60, 60-75, 75-90 em depth) were collected and analyzed for available primary
and secondary nutrients.
The results obtained from this investigation evaluated that the soil
pH, EC, organic carbon and CaC03 of these soils ranged between 8 to 8.5, 0.09
to 0.16 dSm-I, 0.38 to 0.77 per cent and 41 to 177 g kg-1 with mean value of
8.25, 0.13 dSm-1
, 0.58 per cent, 86.50 g kg-1
, respectively. Further it was found
that organic carbon content of these soils were decreased with increasing in
depth while pH and CaC03 content increased with decreasing in depth. In case
of soil EC no proper trend was observed. The data evaluated that mango
orchard soils were medium in organic carbon and calcareous in nature.
The available primary and secondary nutrient viz. N, P, K and Ca,
Mg and S in mango orchard soils were ranged from 112.9 to 269.7, 13.4 to
40.4, 139.00 to 774.81 kg ha-1 , 28 to 45, 11 to 26 cmol kg-1 and 7.5 to 33.7 mg
kg-I, with average value of 203.56, 26.9, 377.6 kg ha-1 and 28.0, 35.8 cmol kg-1
and 21.2 mg kg-1
, respectively. In these nutrients available N, P, K and Sin the
soil decreased with increase in depth while available Ca and Mg increased with
increasing in depth. The data further evaluated that mango orchard soils were
sufficient in available P, K, Ca, Mg and S while deficient inN.
The soil pH and CaC03 content in mango orchard soil was
significantly and negatively correlated with available N, P, K, and S and
significantly and positively correlated with available Ca an Mg, while organic
carbon was significantly and positively correlated with available N, P, K and S, and significantly and negatively correlated with available Ca and Mg.
The data further revealed that their was no any effect of plant
spacing on distribution of available primary and secondary nutrients in soils of mango orchard