Desenvolvimento e produção de quinoa sob irrigação e adubação potássica
Carregando...
Data
2015-12-16
Autores
Rêgo, Vanessa Mendes
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Mato Grosso
Resumo
Quinoa has high nutritional qualities, but conditions of low soil fertility
can severely limit production, beyond his performance is hampered by the lack of
water. Thus, the objective was to study the effect of irrigation levels and potassium
fertilization in the development and production of quinoa in Oxisol. The experiment
was conducted in greenhouse, located in UFMT, Campus Rondonopolis-Brazil, by
using the soil collected from a Oxisoil Cerrado. The experimental design was a
randomized block in a 5x5 factorial, with four replications, corresponding to five
potassium rates (0, 100, 200, 400 and 600 mg dm-3
) and five levels of irrigation (50,
75, 100, 125 and 150% field capacity), The evaluation were beginning from 15 days
after seeding (DAS) plants, analyzing leaf area, stem diameter, chlorophyll index, leaf
number and plant height and finished the 129 DAS collected dry mass of data shoot
and root production and number of grains, mass of 100 grains and water use
efficiency. The results had been submitted to the statistics analysis for the SISVAR
program, determined it variance analysis and regression testing. There was a
significant interaction between potassium and irrigation levels, only for the variable
leaf area. The chlorophyll index, stem diameter and number of days for flowering
were positively isolated response to potassium fertilization and irrigation levels. The
dry matter of shoots and roots were influenced by potassium fertilizer in rates
between 530 and 600 mg dm-3
. The irrigation levels and potassium fertilization
between 99% to 104% and 350 to 373 mg dm-3
, respectively provide the maximum
mass of grain yield and number of grains. The increase in irrigation levels reduces
water use efficiency, already the potassium fertilization of 375 mg dm-3 provides
maximum efficiency of this variable. Potassium fertilization and irrigation levels
influence of isolation for all variables except for the leaf area showed that interaction
between them.
Descrição
Palavras-chave
Citação
RÊGO, Vanessa Mendes. Desenvolvimento e produção de quinoa sob irrigação e adubação potássica. 2015. 78 f. Dissertação (Mestrado em Engenharia Agrícola) - Universidade Federal de Mato Grosso, Instituto de Ciências Agrárias e Tecnológicas, Rondonópolis, 2015.