Soil analogy for making varietal and fertilizer recommendations for rice (Oryza sativa) cultivars in Brahmaputra valley of Asom

DHARAM SINGH; B.P. BHASKAR; U. BARUAH; DIPAK SARKAR

doi:10.59797/ija.v58i4.4227

Authors

DHARAM SINGH
B.P. BHASKAR
U. BARUAH
DIPAK SARKAR

DOI:

https://doi.org/10.59797/ija.v58i4.4227

Keywords:

Analogous soil series, Asom, Brahmaputra valley, Hydric soils, Rice cultivars

Abstract

On farm experimental trials were conducted in 4 dominant soil series, namely Lahangaon series (Aeric Fluvaquents), Bhogdai series (Fluvaquentic Endoaquepts), Matikhola series (Typic Endoaquepts) and Teok series (Typic Endoaquepts), of Jorhat district with an objective of evaluating the performance of rice ( Oryza sativa L.) cul- tivars, viz. Basundhara and Satyaranjan under recommended package of practices (RPP) as well as farmers practice (FP) during 200507. The results showed major soils constraints are such as coarse texture coupled with poor water management and suboptimal available phosphorus (P), exchangeable potassium (K), cation-ex- change capacity (CEC) and excessive iron (Fe2+) uptake or (bronzing or yellowing symptoms). The rice cultivar Basundhara performed better than Satyarajan under RPP as well as under farmers practices in all the 4 analo- gous soil series of Brahmaputra valley of Asom. Similarly, application of NPK in RPP recorded a good response of rice in all the four series and left significantly more available NPK in soil after the rice harvest.

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