The high seedlings quality is essential for deployment of homogeneous orchards. This study evaluated the baruzeiro (Dipteryx alata Vog) seedlings formation on different substrates within protected environments. It was used substrates with100 of cattle manure; 100 of cassava stems; 100 of vermiculite; 50 of cattle manure + 50 of cassava stems; 50 of cattle manure + 50 of vermiculite; 50 of cassava stems + 50 of vermiculite; and + 1/3 of cattle manure + 1/3 of cassava stems + 1/3 of vermiculite. These substrates were tested in protected areas: greenhouse; black shade net of 50 shading; and aluminized thermo-reflective screen of 50 shading. A completely randomized experimental design with five replicates of four plants was adopted. Initially, data were submitted to analysis of individual variance of the substrates, in each environment of cultivation, then performing the evaluation of the residual mean square and the analysis of these environments together for comparison. The best substrate for baruzeiro seedlings was pure vermiculite. The substrates with 100 of manure and the substrate with 33.33 of the mixed studied materials can be used for seedlings formation. The environment with screen can be indicated for the production of baruzeiro seedlings, since it gave vigor to the seedlings.
展开▼
