Adequate use of nitrogen associated with molybdenum in crambe crop

Crambe is serving as alternative oilseed for biodiesel production, however, there are still impediments to commercial expansion because need more information about adequate fertilization. The study aimed evaluating adequate nitrogen rate applied in topdressing, associated with leaf molybdenum in crambe crop under field conditions. Treatments were four nitrogen rates (0, 40, 80 and 120 kg N ha(-1)) and two rates of leaf molybdenum (0, 80 g ha(-1)) in a 4 x 2 factorial under randomized complete block design experiment with four replications. Parameters evaluated were shoot dry matter, thousand grains weight, grain yield and oil content in the seed. There was no significant influence of treatments on thousand grains mass. Nitrogen rates linearly increased dry matter shoots and oil content. Grain yield growth as nitrogen increased. When molybdenum was used, grain yield increased significantly when compared to the absence of nutrient application.