| Autor: |
Bernas, S. M., Wijaya, A., Sagala, E. P., Fitri, S. N. A. |
| Předmět: |
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| Zdroj: |
Malaysian Journal of Soil Science; Dec2021, Vol. 25, p47-60, 14p |
| Abstrakt: |
Briquette compost (BC) was made from water mimosa (Neptunia prostrate Lam.) which grows in the swampland rice fields. Factorial Randomised Block Design (FRBD) was used with the placement of BC as the first factor and BC dosage as the second factor. The placement of compost was one BC at 1 dosage for 1 plant clump with the BC being placed inside soil and rice seedling planted above it (BC1) and the second placement was one BC applied at the middle of four plant clumps, so 4 dosages were combined into one BC because this was for 4 clumps as (BC2). The second factor was application of BC at rates of 0, 10, 20 and 30 ton ha-1 for both treatments. Regression analysis showed that placement and dose of BC significantly correlated with absorbed N, tillers, productive tillers and rice yield. Placement of BC under plant roots gave better results than placement of BC in the middle of four plant clumps. The best combination was between BC1 and a dosage of 20 ton ha-1 which produced a rice yield of 1,014 g m-2 (or 10.14 ton ha-1). This yield was 175% higher compared with the control plot (586.73 g m-2 or 5.867 ton ha-1). The higher rice yield in BC1 compared to BC2 was due to plants being better able to absorb nutrients from BC straight away compared to BC2 where the plant roots needed a longer time to elongate and reach the BC placed in the middle of the four plant clumps. Meanwhile, nitrogen could have been lost before the roots reached the location where the BC was placed. Our study suggests that it is better to form the compost into a BC and insert it into the soil under a plant clump for direct absorption by the roots. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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