masterThesis
Efeito da adubação nitrogenada em cártamo no semiárido nordestino e percepção de estudantes de agropecuária sobre seu uso
Fecha
2019-02-12Registro en:
SILVA, Allyne do Nascimento Eufrásio. Efeito da adubação nitrogenada em cártamo no semiárido nordestino e percepção de estudantes de agropecuária sobre seu uso. 2019. 60f. Dissertação (Mestrado em Desenvolvimento e Meio Ambiente) - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, 2019.
Autor
Silva, Allyne do Nascimento Eufrásio
Resumen
An alternative to minimize the environmental damage caused by the use of fossil fuels is the
substitution for the use of biofuels. Safflower is an alternative for the production of biodiesel,
especially in regions such as the northeastern semi-arid region. However, in order to accomplish
the planting, one of the practices carried out by the farmers is the fertilization that if performed
in the wrong way, can cause numerous environmental problems. Organic fertilization is now
gaining momentum, as well as promoting fertilization brings several other benefits to the soil.
The objective of this study was to evaluate the effect of nitrogen fertilization on the
physiological characteristics of safflower (Carthamus tinctorius L.), yield and yield
components, and also to evaluate the perception of technical students in agriculture on the use
of chemical fertilizers in the semiarid. The experimental culture was carried out on the campus
of the IFRN in the municipality of Apodi-RN and is divided into subunits with three treatments
and one control, and three replicates. The treatments consisted of subunits without addition of
fertilizer and without correctives in the soil (T1); with addition of 100 kg/ ha of organic nitrogen
fertilizer (T2) and with addition of 200 kg/ ha of organic fertilizer (T3) and a control group with
standard fertilization for the species. From this, photosynthesis, stomatal conductance and
transpiration were analyzed during plant development, biomass weighing, seeds and counting
chapters by plants and seeds by chapters. The results showed that the addition of the fertilizer
did not significantly differentiate the physiological responses, the biomass and the yield
components. Only differences in seed production were observed. In addition, a questionnaire
was applied to know the perception that students of the technical course in Agricultural of the
campus IFRN-Apodi campus regarding the use of fertilizers in the semiarid. Through
questionnaires, it was possible to see that the students recognize the importance of using
fertilizers, even though they believe that organic fertilizers are the best to use in the field, even
though they show little information on the subject.