EVALUATION OF THE EFFECT OF TECNOSOL WITH CONSTRUCTION WASTE ON CORN GOWTH (Zea mays)

Abstract

The urbanization process has an impact on the inadequate disposal of construction and demolition waste (CDW), which impacts the reproductive capacity of soils because they are one of the main causes of degradation and contamination of this resource. For this reason, the present study aimed to determine the contribution of CDW, supplied by Construcciones Ecológicas, whose scope is all of Metropolitan Lima, for the elaboration of a technosol; assessing its quality through physicochemical parameters and analyzing the most efficient dose for the growth of hybrid corn under controlled conditions. The results of the characterization of the technosols for each of the three treatments (T) T1, T2 and T3 showed that the greater the CDW in its composition, the greater the number of carbonates, CEC and phosphorus; in addition, it has a basic pH and a higher apparent density. Thus, the selected treatment for dosage was T3, where physicial indicators of hybrid maize growth were assessed using different doses (D) of 3.33%, 6.67% and 10% (w/w) (D1, D2 and D3). The results showed that D2 had the highest values for PHPA, AP, PSR, and TR. Therefore, the study concludes that the technosol formulated with CDW provides favorable conditions for root size when 45% of CDW is included in its composition and applied at a dosage of 6.67% (w/w).