Agronomic performance of crambe (Crambe abyssinica) in the function of fertilization with sewage sludge and ecogypsums
International Journal of Development Research
Agronomic performance of crambe (Crambe abyssinica) in the function of fertilization with sewage sludge and ecogypsums
Received 27th February, 2019; Received in revised form 03rd March, 2019; Accepted 21st April, 2019; Published online 30th May, 2019
Copyright © 2019, Isabela R. Queiroz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The demand for biofuels in the world is growing and some crops have presented great potential for producing raw material for biodiesel production. The objective of this study was to evaluate the feasibility of the use of sewage sludge associated with ecogypsum for crambe cultivation. The experiment was conducted in a greenhouse and the sludge was applied in the non-composted and composted form. The statistical design was completely randomized in a factorial scheme 5 x 2 + 2: five doses of sewage sludge (0 t ha-1, 5 t ha-1, 10 t ha-1, 15 t ha-1, 20 t ha-1), two ecogypsum (calcitic and dolomitic) based on the content of soil clay and its pH and two additional treatments (conventional fertilization with calcitic ecogypsum and with dolomite ecogypsum). Phytotechnical characteristics were evaluated: plant height, collar diameter, seed dry weight, aerial parts dry weight, and seed oil content. It was observed that fertilization with sludge produced significant results in the development of Crambe plants. The best performance of the plants occurred with the dose of 13 t ha-1 of sewage sludge associated with application of ecogypsum for the cultivation of Crambe abysinica.
