| dc.creator | Salazar S,Francisco | |
| dc.creator | Rosas U,Marianela | |
| dc.date | 2012-09-01 | |
| dc.date.accessioned | 2019-04-24T21:19:30Z | |
| dc.date.available | 2019-04-24T21:19:30Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300021 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/55726 | |
| dc.description | Currently in Chile, there is a lack of tools to determine the real-time nutrient contribution of slurries. This study aims to evaluate three quick tests for their accuracy in estimating the total contents of N (TN), P (TP), K (TK), and ammonium-N (N-NH4+) in dairy slurries. The quick tests included the Agros Nova Meter, Quantofix N Volumeter, and a hydrometer. While the Agros and Quantofix meters directly measure the ammonium-N content; the hydrometer indirectly estimates the total content of N, P, and K based on linear relationships with the slurry DM. Samples (73) were collected from dairy farms along Southern Chile (39° to 44° S and 71 to 73° W). Analyses were carried out on laboratory conditions using conventional techniques as well as using each of the quick tests. Results were subjected to straight-line regression analyses. Agros and Quantofix N-NH4+ measurements were accurate (P < 0.01; r² > 0.80). The hydrometer estimations of TN, TP, and TK were also reliable (P < 0.01). Best results were obtained with P (r² = 0.87) and N (r² = 0.79) total contents. To evaluate the kits on-farm and transfer those to dairy producers may constitute a next step towards an efficient management of organic residues in dairy farms in Chile. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392012000300021 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.72 n.3 2012 | |
| dc.subject | Slurry | |
| dc.subject | organic residue | |
| dc.subject | chemical analysis | |
| dc.subject | nutrients | |
| dc.title | Evaluation of On-Farm Quick Tests on Slurries from Southern Chile Dairy Farms | |
