EFFECTS OF A MULTISTRAIN BIOFERTILIZER AND PHOSPHORUS RATES ON NUTRITION AND GRAIN YIELD OF PADDY RICE ON A SANDY SOIL IN SOUTHERN VIETNAM |
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| Authors: | Phan Thi Cong Tran Dang Dung Nguyen Thanh Hien Abu T. M. A. Choudhury Michael T. Rose Mihály L. Kecskés |
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| Affiliation: | 1. Soil and Fertilizers , Institute of Agricultural Sciences for Southern Vietnam , Ho Chi Minh City, Vietnam;2. Biofertilizer Action Research Center , Hanoi, Vietnam;3. Faculty of Agriculture, Food and Natural Resources , The University of Sydney , Sydney, Australia |
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| Abstract: | Field experiments during two successive rainy seasons were conducted in southern Vietnam to evaluate the effects of a commercial inoculant biofertilizer (‘BioGro’) and fused magnesium phosphate (FMP) fertilizer on yield and nitrogen (N) and phosphorus (P) nutrition of rice. Inoculation with BioGro containing a pseudomonad, two bacilli and a soil yeast significantly increased grain yield in the second season and straw yield in both seasons by 3–5%. The FMP fertilizer significantly increased grain yield from 1.72–2.33 t ha?1 to 2.99–3.58 t ha?1 along with total N and P accumulation at all rates in both cropping seasons. In the first season the difference in grain yield between BioGro treated and untreated plots was marginal but in the second season BioGro out-yielded the control at all the rates of added P. Overall, BioGro application did not compensate for low P fertilizer application to the same extent previously demonstrated for low N fertilizer applications. |
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| Keywords: | rice plant-growth promotion fused magnesium phosphate Pseudomonas Bacillus rhizosphere |
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