Seedlings of Acrocomia aculeata in diferent substrates and protected environments

Engenharia Agrícola

Edilson Costa²  Roberta F. Martins¹  Tatiane A. C. Faria¹  Marçal H. A. Jorge¹  Paulo A. M. Leal¹ 

[1] ,UEMS, Unidade Universitária de CassilândiaMS

关键词: bocaiúva;    cattle manure;    cassava branches;    vermiculite;    protected cultivation;    bocaiúva;    esterco bovino;    ramas de mandioca;    vermiculita;    cultivo protegido;   

DOI  :  10.1590/S0100-69162014000300002

来源: SciELO

【 摘 要 】

The seedling production stage is the key to achieve uniformity in tree breeding stage. This study evaluated "bocaiúva" (Acrocomia aculeata) seedling formation, with pre-germinated seeds in different substrates and protected environments, in the University of Mato Grosso do Sul State, Aquidauana, MS. As substrates, we used 100% cattle manure (M), 100% cassava branches (CB), 100% vermiculite (V), 50% cattle manure + 50% cassava branches, 50 % cattle manure + 50% vermiculite, 50% cassava branches + 50% vermiculite and ⅓ cattle manure + ⅓ cassava branches + ⅓ vermiculite. These substrates were tested in a greenhouse covered with 150 µm low density polyethylene (LDPE) film under thermo-reflective screen with 50% shading under film; black screen with 50% shading on the sides; black monofilament screen with 50% shading set on roof and sides; and aluminized thermo- reflective screen with 50% shading set on roof and sides. The completely randomized experimental design with 5 replications of 5 plants each was adopted. Initially, data were submitted to analysis of substrate individual variance in each growing environment, then performing the waste mean square evaluation and their environment joint analysis for comparison. The best growing environment is the thermo-reflective screen compared to LDPE greenhouse and black screen set. All substrates containing manure are recommended for bocaiúva seedlings formation. The pure cassava branch is not indicated for seedling, even using chemical fertilizer.

【 授权许可】

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