Bokashi on seedlings of Campomanesia adamantium (Cambess.) O. Berg: morphometric and photochemical aspects

Abstract

The Campomanesia adamantium (Cambess.) O. Berg (Myrtaceae) is specie native to the ‘Cerrado’, with medicinal and food potential. Therefore, it’s necessary ex situ cultivation; however, the studies in growth phase of seedlings of the species with use of biofertilisers are incipient. However, there isn’t information on adequate amount of this material for seedlings of the species. Thus, objective was to know the effect of bokashi on morphometric and photochemical aspects in C. adamantium seedlings. Five doses of bokashi (0.0, 5.0, 10.0, 15.0 and 20.0 g kg-1 soil), added in a Dystroferric Red Latosol, of clay texture, were evaluated. The experimental design was in randomized block, with four replicates, 20 seedlings per experimental unit. There was mortality of 100% of the seedlings produced with 20 g bokashi. Survival and Fv/F0 decreased as a function of increasing doses of bokashi. The maximum collar diameter was observed in seedlings cultivated in soil with addition of 6.48 g bokashi. There was growth of CML and LML with increasing doses of bokashi. The addition of bokashi favors the morphometric characteristics, but above 15 g bokashi is harmful in the production of C. adamantium seedlings.