| dc.creator | Sierra B,Carlos | |
| dc.creator | Alfaro P,Rubén | |
| dc.date | 2008-09-01 | |
| dc.date.accessioned | 2019-04-24T21:18:45Z | |
| dc.date.available | 2019-04-24T21:18:45Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300010 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/55410 | |
| dc.description | The effects of P and K on grapevines (Vitis vinifera L.) var. Muscat Rosada were evaluated four years, considering the same levels of N. The experiment was conducted at the Vicuña Experimental Station (30° S; 70°44’ W) of the Instituto de Investigaciones Agropecuarias (INIA). The soil is alluvial antropic miscellaneous (Entisols). Three fertilization treatments were established: 1) N 160 + P2O5 200 + K2O 300; 2) N 160 + P2O5 0 + K2O 300; and 3) N 160 + P2O5 200 + K2O 0. At the beginning of the experiment, grape vines received all the phosphate fertilizers, 200 kg ha-1 of P2O5 as triple superphosphate in Treatments 1 and 3. Nitrogen was applied as urea for four years. The applications were initiated when the vine buds measured 20 cm. The K was applied to the soils of Treatments 1 and 2, at a dosage of 200 kg ha-1 K2O, using potassium sulphate. Between berry set and 30 d before harvest, 100 kg ha-1 K2O were applied as potassium sulphate by fertigation. Significant effects of the P fertilization were observed by the second year, with increased cluster numbers per plant. K also increased grape fruit yield by the third year. This response was obtained with less than 5 mg kg-1 of P available in the soil and less than 145 mg kg-1 of exchangeable K in the soil. The initially low content of available K and P suggests a high probability of response to the application of both elements. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392008000300010 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.68 n.3 2008 | |
| dc.subject | grapes | |
| dc.subject | fertilization | |
| dc.subject | phosphorus | |
| dc.subject | potassium | |
| dc.title | Potassium and Phosphorus in Muscat Rosada Grape Yield in Elqui Valley Soil | |
