Effects of farmyard manure and activated effective microorganisms on rain-fed upland rice in Mwanza, Tanzania


The study was conducted to analyse and compare nutrient contents of farmyard manure, farmyard manure treated with effective microorganisms and effective microorganism solutions, also, to determine the effect of farmyard manure and activated effective microorganisms on rice growth, development and yield. Farmyard manure and effective microorganism solutions were characterized for nutrient status in the laboratory. A 3 × 3 factorial experiment in randomized complete block design and replicated thrice involved farmyard manure and activated effective microorganisms. Farmyard manure at rates 0, 5 and 10 t ha−1 was applied 2 weeks before sowing by broadcasting and incorporated into the soil. Activated effective microorganism solution at 0, 20 and 40 l ha−1 was sprayed weekly at vegetative stage. Farmyard manure and effective microorganism solution contained both macro- and micronutrients at varying proportions. Application of farmyard manure increased rice yields from 1.35 to 3.31 t ha−1, 1.35 to 3.03 t ha−1 activated effective microorganism solution, and 1.35 to 3.33 t ha−1 in both farmyard manure and activated effective microorganisms when integrated. Adoption of organic soil amendments would improve soil fertility for sustainable crop production to small-scale farmers.

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Effective microorganism solution


Farmyard manure


New Rice for Africa


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I give my heartfelt thanks to the Government of the United Republic of Tanzania, the Commission for Science and Technology (COSTECH) for sponsoring this programme, sincere acknowledgments to the Zonal Director and all staff at the Agriculture Research and Development Institute Ukiriguru Mwanza for their support during the field experiment.

Also, I would like to thank Bustani ya Tushikamane and Sustainable Agriculture Tanzania (SAT) in Morogoro and Mr. Lukas Hader from Multikraft Production Austria for providing the EM solution, technical advice on EM and encouragement during this research. My acknowledgments are extended to Sokoine University of Agriculture, Department of Crop Science and Production and the Department of Soil Science for the technical advice and logistic supports during this study, and also gratitude to all my relatives and friends who directly or indirectly contributed to the completion of this research work.

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Saidia, P.S., Mrema, J.P. Effects of farmyard manure and activated effective microorganisms on rain-fed upland rice in Mwanza, Tanzania. Org. Agr. 7, 83–93 (2017). https://doi.org/10.1007/s13165-016-0154-6

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  • Effective microorganisms
  • Farmyard manure
  • Organic manure
  • Rice ecosystems
  • Upland rice