This work aimed to evaluate the effect of urban waste compost on morphological parameters of "sesbânia" and "angico" seedlings. The substrates had the following proportion of compost and subsoil samples of Quartz-Sand Neosol or Red-Yellow Latosol (%): 0:100; 20:80; 40:60; 60:40 and 80:20, without mineral fertilizer. Seeds of Sesbania virgata were inoculated with the recommended strain BR 5401. Morphological parameters of seedlings, their relationships and the Dickson Index of Quality (IQD) were determined to "sesbânia" and "angico" at 56 and 120 days after sowing respectively. The substrate effect on morphological parameters of "sesbânia" and "angico" seedlings varied according to substrate proportion. Compost addition caused increase in height, shoot and root dry matter weight ratio and IQD of "angico", therefore not being recommend any one of the substrate proportions to this species. As for "sesbânia", shoot, root and total dry matter weight, stem diameter, shoot area, shoot and root dry matter weight ratio, IQD and number of nodules were directly related to the addition of waste compost to the substrate. Maximum production of total dry matter weight, stem diameter and IQD were obtained with the proportion 57:43. Thus, we recommend this e proportion of waste compost and soil for the production of "sesbânia" seedlings.
Fertilization; tubes; substrate; subsoil; legume species; waste recycling
