DESEMPENHO DE DIFERENTES SUBSTRATOS E ESTIMULANTE DE ENRAIZAMENTO NA PRODUÇÃO DE MUDA DE ALFACE CRESPA

Abstract

The objective of this work was to evaluate the performance of different substrates in the production of crisp lettuce seedlings. The experiments were installed in the greenhouse of the Beira Mato nursery, in the city of Morrinhos, state of Goiás, at Latitude: 17° 43' 16'' South and Longitude: 49° 6' 29'' West, using commercial lettuce seeds. curly the experiment was carried out in a greenhouse in a completely randomized design, in a 2 x 4 factorial scheme, with four replications. Where the first factor was composed by the Titanium Rooter and without the use of the rooter. The second factor consisted of four substrates: Carolina; Carbonized Rice Straw and Coconut Fiber; Carolina; carbonized rice straw; and coconut fiber. Each experimental plot consisted of 16 seedlings. The seedlings were produced in plastic trays measuring 53.5 X 27.0 X 5.0 cm, composed of 128 cells, where each cell had seven cm3. Thirty days after sowing, 10 plants chosen at random in each plot were evaluated and the plant height was determined; the stem diameter, the fresh and dry mass of the root, of the aerial part, total. With the Carolina substrate produces if lettuce seedlings with greater vegetative development. The use of root was advantageous in the production of lettuce seedlings, except when only the Carolina substrate is used. Carolina substrate, charred rice straw and coconut fiber showed as a viable alternative to produce lettuce seedlings. The more fiber coconut fiber and coconut fiber -fiber -based substrate have not been advantageous in producing lettuce seedlings.