Genótipos de cártamo: produtividade de grãos, teor de óleo e acúmulo de nutrientes no oeste do Paraná

Abstract

The increase of energy consumption in Brazil and worldwide generates a need to search alternative renewable and non-polluting energy such as biofuels. The safflower (Carthamus tinctorius L.) is a plant with large oil production capacity, with the potential for biodiesel production. It has high productivity and easy climate adaptation. It can be an economical option in crop rotation cultivation practiced by farmers. The objective of this study was to evaluate eighteen genotypes of safflower and its nutrients absorption in an experiment carried out in the western region of State of Parana. The experimental area is located at the Experimental Station of the Agronomic Institute of Paraná, in Santa Tereza do Oeste - PR. There were evaluated in a randomized block design with four replications. There were evaluated the cycle, plant height, dry matter yield of straw, grain yield, accumulation of nutrients in the area and the grain and oil content in grain and oil yield. The data will be submitted to analysis of variance and the averages compared by Scott-Knott test at 5 %. The average values observed were 152 day cycle, production 9134.2 kg/ha, 4531.8 kg / ha of grain and 26 % oil content. The nutrient uptake followed the order N > K > Ca > P > Mg > S. Since the export order was N > P > K > Mg > S > Ca. The nutrients mobility extracted for grains was low for K and Ca, Mg and S for average and high for N and P. The genotypes with higher yields on average were less efficient in the use of nutrients.