Potential of Class D organic fertilizer the cultivation of flowers (Acalypha hispida) in greenhouse

Abstract

The treated sewage sludge called as Class D fertilizer (CDF) can be an alternative in flower
production for family farmers who seek autonomy in the field since these residues are composted
around urban centers. The present paper aimed to evaluate concentrations of CDF in
the production of Acalypha hispida in greenhouse conditions at CCA-UFSCar (Araras-SP).
The experiment was a randomized block design with five treatments (T) and four replications
(Blocks), T1: 0% FCD; T2: 25% FCD + 75% conventional substrate (SC); T3: 50% FCD + 50%
SC; T4: 75% FCD + 25% SC and T5: 100% FCD. The plants height and stem diameter were
evaluated in a period of 7 to 42 days after transplanting. It was concluded that the treatment
25% FCD + 75% SC had the highest value of stem diameter and FCD in its different concentrations
did not provide the growth of flowers of Acalypha reptans in height.