Description
Nitrogen fertilization contributes to grass growth and, for this reason, the objective was to evaluate the morphogenic characteristics of Urochloa brizantha cultivar Marandu subjected to different nitrogen rates (0, 50, 100 and 150 kg N.ha-1) in the Brazilian savannah through the variables number of leaves.tiller-1, leaf growth, leaf average size, senescent leaf.tiller-1 number and stem+pseudostem average size. The experiment was established in the Forage and Pastures Sector of Jatai Federal University (UFJ) and, after the soil correction and fertilization, the Marandu grass plots were installed in a randomized blocks experimental design, with four treatments and four replications. When the forage canopy reached the cutting height (30 cm) it was homogenized with pruning shears and four tillers per plot were identified with colored tape and a locating stake. Morphogenesis data was collected every two days, measuring the leaves size and stem+pseudostem size, and leaves were classifying according to their physiological state. Marandu cultivar showed increasing response in leaves number and in leaf growth in nitrogen doses from 50 to 100 kg N.ha-1. The number of senescent leaf.tiller-1 decrease when nitrogen fertilization increase from 0 to 100 kg N.ha-1. Marandu showed a morphogenic response to nitrogen fertilization and up to 100 kg N.ha-1 can be used.
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Morphogenesis of Marandu Brachiaria Under Different Nitrogen Rates in the Brazilian Savannah
Nitrogen fertilization contributes to grass growth and, for this reason, the objective was to evaluate the morphogenic characteristics of Urochloa brizantha cultivar Marandu subjected to different nitrogen rates (0, 50, 100 and 150 kg N.ha-1) in the Brazilian savannah through the variables number of leaves.tiller-1, leaf growth, leaf average size, senescent leaf.tiller-1 number and stem+pseudostem average size. The experiment was established in the Forage and Pastures Sector of Jatai Federal University (UFJ) and, after the soil correction and fertilization, the Marandu grass plots were installed in a randomized blocks experimental design, with four treatments and four replications. When the forage canopy reached the cutting height (30 cm) it was homogenized with pruning shears and four tillers per plot were identified with colored tape and a locating stake. Morphogenesis data was collected every two days, measuring the leaves size and stem+pseudostem size, and leaves were classifying according to their physiological state. Marandu cultivar showed increasing response in leaves number and in leaf growth in nitrogen doses from 50 to 100 kg N.ha-1. The number of senescent leaf.tiller-1 decrease when nitrogen fertilization increase from 0 to 100 kg N.ha-1. Marandu showed a morphogenic response to nitrogen fertilization and up to 100 kg N.ha-1 can be used.
