Phytometrics parameters and yield of maize in fertilization With poultry litter in system conventional tillage and no-tillage

Given the environmental concern of giving target animal waste, but also in economic and social issues to improve quality of life of farmers and shortage of scientific studies on sources and rates of application of these products in an agricultural environment, this work was elaborated in order to study the effects of application of the different doses and sources of the poultry manure and mineral fertilizer in the development of maize as assessed by plant height, leaf number, stem diameter, dry weight of plant tops. The work was conducted in two areas, one in conventional tillage. (Ibaiti/PR) and a no-tillage (Abatia/PR) in the northern region of Parana. We used thirteen treatments and a control (mineral fertilizer) and three types of manure (rice straw, wood shavings and peanut hulls) in four doses (2.5, 5, 10 and 20 ha(-1)) supplemented with 1/3 of the recommended dose of mineral fertilizer. The experimental design was a randomized block in factorial arrangement 3x4+ 1 and the data were compared by analysis of variance using the Tukey test at 5%. The best results were with the poultry litter supplemented with 1/3 the recommended dose of mineral fertilizers that produced plants with greater height, leaf number and dry weight recorded at 50 DAE, both as in conventional tillage and in stem diameter and yield compared with the conventional system with only mineral fertilizer application