DRIS indices in three phenological stages of the carrot crop
| dc.creator | Felipe Augusto Reis Gonçalves | |
| dc.creator | Leonardo Angelo de Aquino | |
| dc.creator | Luciel Rauni Dezordi | |
| dc.creator | Junia Maria Clemente | |
| dc.creator | Roberto Ferreira Novais | |
| dc.date | 2017 | |
| dc.date.accessioned | 2026-07-07T04:31:24Z | |
| dc.description | Carrot is one of the most consumed vegetables in Brazil, where the cultivars currently grown present a high yield potential and nutritional demand, which require constant adjustments in fertilization programs for the crop. This study aimed at determining reference values and diagnostic indices by using the DRIS method in three phenological stages of the carrot crop (around 40 and 70 days after sowing and at harvest), as well as evaluating the possibility of early diagnosis for nutritional limitations. For determining the DRIS norms, a database was obtained from leaf samplings, root yields and leaf contents of N, P, K, Ca, Mg, S, B, Cu, Mn and Zn, in carrot commercial fields. The nutritional limitation order was generated as a function of the fertilization response and optimum range of leaf contents. The reference values for K, Ca, Mg, S and Mn were similar in all sampling times. N, P, B, Cu and Zn varied with the stages sampled, indicating the need to standardize the sampling times for these nutrients. Mn, K and Mg were the most limiting nutrients for the crop growth, while Zn and B were the least limiting. There was a correlation between the diagnoses performed at early stages and those performed at harvest for K, Ca, Mg, S and Mn, indicating the possibility of early diagnosis for the deficiency of these nutrients. | |
| dc.format | application/pdf | |
| dc.identifier | 1517-6398 | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=253050023005 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/463938 | |
| dc.language | en | |
| dc.publisher | Universidade Federal de Goiás | |
| dc.relation | http://www.redalyc.org/revista.oa?id=2530 | |
| dc.rights | Pesquisa Agropecuária Tropical | |
| dc.source | Pesquisa Agropecuária Tropical (Brasil) Num.1 Vol.47 | |
| dc.subject | Agrociencias | |
| dc.title | DRIS indices in three phenological stages of the carrot crop | |
| dc.type | artículo científico |