Fig. 4From: Hydrochar from sugarcane industry by-products: assessment of its potential use as a soil conditioner by germination and growth of maizeDry matter of maize shoots and roots collected at the end (60 days) of the growth experiment in oxisol and ultisol that received different rates of hydrochar, and in the experiments using Terra Mulata soils. aIndicates a positive statistically significant difference in relation to control and all treatmentsBack to article page