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2000•Madras Agricultural JournalOpen access

Effect of integrated nitrogen management of fertility status of rice soil

SARAVANA PANDIAN P, RANI PERUMAL

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Abstract

Field experiment with rice crop using N fertiliser, FYM, Sesbania aculeata and Azospirillum at Tamil Nadu Agricultural University farm, Coimbatore revealed that there was a depletion of all the major nutrients with the application of fertiliser N alone. Conjoint addition of green manure with fertiliser N improved the status of available N2 organic carbon, NH4-N, Olsen - P and NH4OAc-K. A substantial increase in the fertility status was also observed with the incorporation of FYM with higher doses of N fertilisers. However, there was a drastic reduction of NO3-N in rice soil with all the treatments studied.

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What this paper is about

Field experiment with rice crop using N fertiliser, FYM, Sesbania aculeata and Azospirillum at Tamil Nadu Agricultural University farm, Coimbatore revealed that there was a depletion of all the major nutrients with the application of fertiliser N alone. Conjoint addition of green manure with fertiliser N improved the status of available N2 organic carbon, NH4-N, Olsen - P and NH4OAc-K. A substantial increase in the fertility status was also observed with the incorporation of FYM with higher doses of N fertilisers. However, there was a drastic reduction of NO3-N in rice soil with all the treatments studied.

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Available abstract

Field experiment with rice crop using N fertiliser, FYM, Sesbania aculeata and Azospirillum at Tamil Nadu Agricultural University farm, Coimbatore revealed that there was a depletion of all the major nutrients with the application of fertiliser N alone. Conjoint addition of green manure with fertiliser N improved the status of available N2 organic carbon, NH4-N, Olsen - P and NH4OAc-K. A substantial increase in the fertility status was also observed with the incorporation of FYM with higher doses of N fertilisers. However, there was a drastic reduction of NO3-N in rice soil with all the treatments studied.

Key concepts: Sesbania, Agronomy, Soil fertility, Green manure, Nutrient, Microbial inoculant, Agriculture, Nutrient management

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