Crescimento inicial de Stryphnodendron polyphylum (Mart.) em resposta à adubação com N e P

CERNE

Marchetti, Marlene Estevão¹  Ramos, Diovany Doffinger¹  Souza, Natália Hilgert de²  Scalon, Silvana de Paula Quintão¹  Carnevali, Thiago de Oliveira¹  Oliveira, Maiby Teodoro de³ 

[1] Universidade Federal da Grande Dourados, Dourados, Brasil$$;Universidade Estadual de Mato Grosso do Sul, Mundo Novo, Brasil$$;Universidade Federal de Santa Catarina, Florianópolis, Brasil$$

关键词: Barbatimão;    Savannah;    Macronutrients;    SPAD index.;   

DOI  :  10.1590/01047760201420031425

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

Barbatimão is an important native specie of Savannah, with economic potential and restoration of degraded areas, however, there are few agronomic studies with the specie, particularly regarding the fertilization with nitrogen and phosphorus in Cerrado soils. Thus, the objective was to study the initial growth, the levels of chlorophyll, dry matter production in function of N and P levels. The study was developed in 8 dm³ pots and kept in a greenhouse. There were studied four N levels (0, 20.82, 41.64 and 62.46 mg N kg^-1) and four P levels (0, 41.72, 83.44 and 125.16 mg.kg^-1 P₂O₅) in 4x4 factorial design in randomized blocks experimental design with four replications. After 210 days after sowing height, stem diameter, chlorophyll content, dry mass of shoot and root and leaf N content were measured. The nitrogen and phosphate application showed higher increment for all traits.

【 授权许可】

Unknown