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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 4
First page : (509) Last page : (516)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8305

Changes in the Growth Parameters of Paddy in Soils with Varying Phosphorus Status and Doses of Phosphorus Applied

Ashna Susan Joseph¹*, A. Baskar², U.Bagavathi Ammal³ and V. Chellamuthu⁴
¹Ph.D Scholar, Department of Soil Science &Agricultural Chemistry,
University of Agricultural Sciences, Raichur, Karnataka
²,³Professor, Department of Soil Science &Agricultural Chemistry,
⁴Professor, Department of Agronomy, Pandit Jawaharlal Nehru College of
Agriculture and Research Institute, Karaikal
*Corresponding Author E-mail: ashnasj18@gmail.com
Received: 4.07.2020  |  Revised: 11.08.2020   |  Accepted: 16.08.2020 

 ABSTRACT

A study was conducted in the farm soils of PAJANCOA & RI, Karaikal in order to quantify the distribution of Phosphorus (P) in different pools as well as to study the response of paddy crop to P application. A pot culture experiment was carried out with four types of soils which are differing with their P status namely (i) soils with low levels of both labile and non-labile-P (ii) soils with low levels of labile-P and high levels of non-labile-P (iii) soils with high levels of labile-P and low levels of non-labile-P and (iv) soils with high levels of both labile and non-labile-P and with four doses of P application namely 0, 50, 100 and 150 kg P2O5 haˉ¹. The results indicated that the height of the plant decreased with the application of P in general. However, in soils which registered lower levels of labile and non-labile-P, the addition of P tended to increase the plant height. The number of tillers was found to be the maximum with the application of 100 kg P₂O₅ haˉ¹, though this was significant in soils which recorded high levels of labile-P.

Keywords: Fractions of P, Labile-P, Non-labile-P, Plant height, Number of tillers

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Joseph, A.S., Baskar, A., Ammal, U.B., & Chellamuthu, V. (2020). Changes in the Growth Parameters of Paddy in Soils with Varying Phosphorus Status and Doses of Phosphorus Applied, Ind. J. Pure App. Biosci. 8(4), 509-516. doi: http://dx.doi.org/10.18782/2582-2845.8305