| dc.creator | Alves Flores,Rilner | |
| dc.creator | de Mello Prado,Renato | |
| dc.creator | Pancelli,Márcio Alexandre | |
| dc.creator | Almeida,Hilário Júnior | |
| dc.creator | Moda,Leandro Rosatto | |
| dc.creator | Montes Nogueira Borges,Bernardo Melo | |
| dc.creator | Pereira de Souza Junior,Jonas | |
| dc.date | 2014-03-01 | |
| dc.date.accessioned | 2019-04-24T21:19:50Z | |
| dc.date.available | 2019-04-24T21:19:50Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100013 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/55840 | |
| dc.description | The presence of mulch on the soil surface after the mechanical harvesting of sugarcane (Saccharum officinarum L.) enhances the cycling of nutrients, especially K, which can decrease K fertilizer recommendations for the crop. The aim of this study was to evaluate the effect of K addition to an Oxisol, with an initial concentration 0.07 cmol c K kg-1, in first and second ratoon (no-till) sugarcane cultures by a conservationist system, i.e. rational use of fertilizers, use of alternative inputs and especially the maintenance of residues in soil that was previously burned to facilitate cutting. The following K doses were tested: 0, 32.5, 65, 130, and 195 kg K2O ha-1, arranged in a randomized block design with five replicates. Potassium content in the soil and in the plant, as well as the yield and the quality of stalks were evaluated. Soil K application increased K concentration in soil and plant, and was reflected in the production of stalks, with higher production (87.5 and 107.5 t ha-1) with the use of 120 and 123 kg K2O ha-1 in first and second ratoon sugarcane, respectively. At the first 2 yr it was not possible to reduce the K fertilization in ratoon. Therefore, with the introduction of the conservationist system there was an increase (20 t ha-1) at the second ratoon regarding the first one with the same applied rate. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392014000100013 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.74 n.1 2014 | |
| dc.subject | Plant nutrition | |
| dc.subject | residues covering | |
| dc.subject | Saccharum officinarum | |
| dc.title | Potassium nutrition in the first and second ratoon sugarcane grown in an Oxisol by a conservationist system | |
