PRODUTIVIDADE DE COENTRO VERDÃO SUBMETIDO A DOSES DE FÓSFORO E NITROGÊNIO NA FASE VEGETATIVA

Abstract

The objective of this work was to evaluate the yield of coriander Verdão subjected to nitrogen and phosphorus doses in the edaphoclimatic conditions inherent to the municipality of CratoCE. The experimental design was randomized blocks in a 4x4 factorial scheme, with three replications, totalizing 48 observations. The first factor consisted of the doses of phosphorus (0, 5, 10 and 20 g) and the second by nitrogen doses (0, 2, 4 and 8 g). The variables analyzed were: plant height, number of plants/m2, fresh mass of aerial part/m2, root mass/m2 and mass per plant. The results showed that the nitrogen factor significantly influenced the variables plant height, shoot mass per square metre and mass per plant. The effect of phosphorus was positive to increase the root area. Nitrogen applications provided additions of 57.6; 55.4 and 35.8% for plant height, aerial part mass per square metre and mass per plant, respectively. The tests of the phosphorus doses showed that the application of 9.82% provided the growth of 148.19, while the dose of 10.57% of P, increased the plant biomass in 969.8 g. The use of nitrogen contributed to the greater development of the plants, Demonstrated that the use of this mineral is extremely important to obtain better productivity indexes. The dose of 8g/m2 of N increased in mass per plant, fresh mass of aerial part and Root mass respectively in 57.6; 55.4 and 35.8% in relation to non-fertilized plants. The use of phosphorus increased the number of plants per square metre, fresh mass of the aerial part per square metre and root mass per square metre.