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Efecto de la fertilización nitrogenada sobre la actividad microbial y rendimiento de avena forrajera en un suelo andisol del departamento de Nariño, Colombia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Silva, P. Amanda |
| Copyright Year | 2006 |
| Abstract | Effect of nitrogen fertilization on microbial activity and forage yield in oat in an andisol of Narino department of Colombia. The effect of three nitrogen sources potassium nitrate (13% de N y 44% de K20), ammonium sulphate (21% de N y 24% de S) and colacteos (27% de N, 10 % de K20 y 6% de P2O5), at three application time (at seeding time, total at 45 days and fractional, 50% at sowing and 50% at 45 days after sowing) and three doses (25, 75 and 150 kg/ha), in an Andisol of Narino, Colombia located at 2820 masl and 12 0C was evaluated. Microbial activity increased with application of total fertilizer at sowing and at 45 days with the higher (fertilizer sources did not affect responses). Application time did not affect the number of bacteria, neither fungy population, but actinomycetes number increased with application of total fertilizer at sowing. High doses of potassium nitrate increased bacteria population and actinomycetes. Dry matter content increased when total fertilizer was applied at sowing and at 45 days. On the other hand, maximum yield of fresh forage, dry matter and protein were obtained at a rate of 75 and 150 Kg/ Ha. with potassium nitrate , colacteos and ammonium sulphate. |
| Starting Page | 55 |
| Ending Page | 63 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| Volume Number | 55 |
| Alternate Webpage(s) | https://revistas.unal.edu.co/index.php/acta_agronomica/article/download/195/469 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
