Fertilización fosfatada para plantas jóvenes de vid Chardonnay y Pinot Noir en suelo arenoso

Idesia

Ciotta, Marlise Nara¹  Girotto, Eduardo²  Lourenzi, Cledimar Rogério³  Ceretta, Carlos Alberto⁴  Silva, Lincon Oliveira Stefanello da⁴  Ferreira, Paulo Ademar⁴  Tassianri, Adriele⁴  Brunetto, Gustavo⁴  Couto, Rafael da Rosa⁴  Conti, Lessandro de⁴  Marchezan, Carina⁴ 

[1] Epagri, São Joaquim, Brasil;Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Brazil;UFSC, Florianópolis, Brazil;UFSM, Santa Maria, Brazil

关键词: Phosphorus fertilizer;    growth;    Leaf P;    Vitis vinifera.;   

DOI  :  10.4067/S0718-34292018000100027

学科分类：农业科学（综合）

来源: Universidad de Tarapaca * Facultad de Agronomia

【 摘 要 】

Sandy soils of the Campanha Gaúcha region have naturally low levels of available phosphorus (P), which is why special attention to pre-planting fertilization is important. However, there are no studies that enable a proper calibration method to determine P content available in soil for young grapevines. The study aimed to evaluate phosphorus fertilization for young grapevines of Chardonnay and Pinot Noir in order to provide support for the recommendation of P in sandy soils. In October, 2011 we applied six doses of P (0, 10, 20, 40, 60 and 100 kg P2O5 ha-1 yr-1) in soil and transplanted cultivars of Chardonnay (experiment 1) and Pinot Noir (ex-periment 2). The design of each experiment was randomized blocks with ten plants and three replications. We evaluated P content in the soil and leaves. We determined plant height, stem diameter and dry matter of the pruned material from crop seasons 2011/12 to 2014/15. The addition of increasing P doses elevated P content available in soil three years after implementing the experiments, but exclusively in doses above 40 and 60 kg P2O5 ha-1 in Pinot Noir and Chardonnay, respectively. However, P content in soil for every applied P dose remained below sufficiency level, and therefore growth parameters and leaf P content were virtually unaffected.

【 授权许可】

CC BY-NC