J. Irin*, P.K.
Biswas, M. J. Ullah, T. S. Roy and M. A. Khan
*Corresponding
address, Email: isratateo@gmail.com
Abstract
Experiments were conducted at the Agronomy farm of Sher-e-Bangla
Agricultural University for two consecutive years to evaluate the
impact of different kinds of green manure’s incorporation and
fertilizer addition on yield and yield attributes of transplanted
Aman rice (BRRI dhan66). Fifty daysold green manure crops (Deshi
dhaincha (Sesbania aculeata), African dhaincha (Sesbania rostrata),
Sunnhemp (Crotolaria juncea L.), Mungbean (Vigna radiata), Blackgram
(Vigna mungo), Cowpea (Vigna unguiculata), Ipil-ipil (Leucaena
leucocephala) and Mimosa (Mimosa pudica)) were incorporated after in
situ production prior to the production of T. Aman. Recommended dose
of N and half of recommended dose of N were applied in 1st year
(2015) whereas, the recommended dose and half of recommended doses of
NPK fertilizers were applied in 2nd year (2016). Results showed that,
the biomass from Sesbania rostrata ,Sesbania aculeata and Crotalaria
juncea with half of recommended dose of NPK gave the yield which was
at par to that obtained from recommended dose. However, higher grain
yield was recorded at both from recommended and half of recommended
dose of N ha-1 and NPK along with the incorporation of S. rostrata
and S. aculeata followed by C. juncea and V. unguiculata prior to
T. Aman transplanting as compared to control (no green manures).
Key Words: Green
manuring, soil health, In situ.
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