| Texto completo | |
| Autor(es): |
Bachiega Zambrosi, Fernando Cesar
[1]
;
Mattos, Jr., Dirceu
[2]
;
Quaggio, Jose Antonio
[1]
;
Cantarella, Heitor
[1]
;
Boaretto, Rodrigo Marcelli
[2]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Inst Agron Estado Sao Paulo, Ctr Solos & Recursos Ambientais, BR-13012970 Campinas, SP - Brazil
[2] Inst Agron, Ctr Citricultura Sylvio Moreira, Cordeiropolis - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Communications in Soil Science and Plant Analysis; v. 44, n. 14, p. 2107-2117, AUG 6 2013. |
| Citações Web of Science: | 2 |
| Resumo | |
Because low-phosphorus (P) availability limits citrus growth, rootstocks with a relatively high capacity for P uptake are desirable. An experiment was conducted with trees on Cleopatra mandarin (CM) and Rangpur lime (RL). Treatments consisted of P rates (20, 40, and 80 mg kg(-1) of soil) applied in soil layers of 0-0.30 m and/or 0.31-0.60 m, besides an unfertilized control. The P fertilization increased root and shoot growth, and P nutrition was improved as indicated by greater leaf P concentration, P uptake, and P root uptake efficiency (PUE). The P applied in both soil layers improved shoot growth, P uptake, and PUE. Trees on RL took up 23-126% more P and had root systems with greater growth and PUE compared to those on CM. Thus, P uptake by citrus trees in low-P soils can be improved by augmenting the depth of fertilizer application and the use of more adapted rootstocks. (AU) | |
| Processo FAPESP: | 07/04634-3 - Absorcao, eficiencia de uso de fracionamento do fosforo (32p) em plantas citricas. |
| Beneficiário: | Dirceu de Mattos Junior |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |