Artigo Produção Nacional Revisado por pares

Association of controlled-release and foliar fertilizers in the production of grafted dwarf cashew seedlings

2020; Taylor & Francis; Volume: 43; Issue: 7 Linguagem: Inglês

10.1080/01904167.2020.1711934

ISSN

1532-4087

Autores

Ricardo Miranda dos Santos, William Natale, Carlos Alberto Kenji Taniguchi, Márcio Cléber de Medeiros Corrêa, Luiz Augusto Lopes Serrano, Adriana Guirado Artur,

Tópico(s)

Plant tissue culture and regeneration

Resumo

Cashew yield in Brazil is considered as unstable due to the heterogeneity of the orchards. With the availability of clonal seedlings of superior genotypes and modernization of cultural practices, the national yield of cashew nuts is expected to increase. This study aimed to evaluate the application of controlled-release and foliar fertilizers on the production of the "CCP 06" rootstock and on the grafted seedling of "BRS 226" dwarf cashew. Two complementary experiments were carried out at the Experimental Field of Pacajus, belonging to Embrapa Agroindústria Tropical, located in the municipality of Pacajus-CE, Brazil. The first one relative to the production of the "CCP 06" rootstock with application of a controlled-release fertilizer (CRF) in the substrate at rate of 3.70 kg m−3 or with spraying of foliar fertilizer (FF) at rate of 2.5 g L−1 at 30 days of sowing (DAS). In the second experiment, relative to the production of grafted seedlings of "BRS 226" dwarf cashew, treatments consisted in the application of CRF to the substrate at sowing (CRF S); FF at 30 days after sowing (FF 30 DAS); CRF after grafting (CRF AG), FF applied at 45 days after grafting the seedlings (FF 45 DAG); and associations of CRF S + FF 45 DAG, and FF 30 DAS + FF 45 DAG. The CRF applications after grafting, at sowing associated with FF 45 DAG and FF 30 DAS + FF 45 DAG led to increase in the total dry matter of the grafted seedlings of "BRS 226" dwarf cashew.

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