ABSTRACT
This work aimed at evaluating and comparing agronomic characteristics of 15 quinoa (Chenopodium quinoa Willd) genotypes cultivated in two altitudes and sowing densities. The experiment initiated by individual plant selection in Brasília, DF, followed by progeny evaluation in Colombia, at 1,100 m and 1,850 m altitude and population densities of 30 and 12 plants m-1, with row spacing of 0,50 m. Eleven progenies and four commercial cultivars were tested. The progenies were obtained by selecting individuals in BRS Syetetuba based on plant height, grain and dry matter yield, harvest index and 1,000 grain weight. The genotypes with the highest grain yield were BRQ 8 (2,283 kg ha-1), Aurora (2,121 kg ha-1) and BRQ 4 (2,043 kg ha-1). In general, the genotypes had early plant cycle, from emergence to physiological maturity of 100-110 days at high plant density for the two altitudes. It is concluded that exploring variability in progenies originated from natural crosses is effective in the adaptation of quinoa to tropical environments. Moreover, genotypes tested in the Cerrado (Brazilian Savannah) maintain the same response relation when evaluated in Colombia. (AU)
Este trabalho teve por objetivo avaliar e comparar características agronômicas e biométricas de 15 genótipos de quinoa (Chenopodium quinoa Willd), cultivados em duas altitudes e densidades de semeadura. O experimento iniciou por seleção individual em Brasília, DF, seguido por avaliação agronômica em duas altitudes (1,100 m e 1,850 m), e duas densidades de semeadura (30 plantas m-1 e 12 plantas m-1) na Colômbia. O experimento foi constituído por 11 progênies e quatro cultivares comerciais em uso na Colômbia. Na seleção, consideraram-se altura de plantas, produção de grãos e massa seca, índice de colheita e peso de 1000 grãos. Os genótipos que se destacaram para rendimento foram BRQ 8 (2,283 kg ha-1), Aurora (2,121 kg ha-1) e BRQ 4 (2,043 kg ha-1). Em geral, os genótipos apresentaram precocidade, com ciclo (emergência-maturação) entre 100 e 110 dias, com densidade ótima de 30 plantas m-1 nas duas altitudes. Conclui-se que a exploração de variabilidade em progênies oriundas de cruzamentos naturais, mostra-se efetiva na adaptação de quinoa a ambientes tropicais. Ademais, genótipos selecionados no Cerrado mantêm as mesmas relações de resposta quando avaliados na Colômbia. (AU)
Subject(s)
Crop Production , Chenopodium quinoa , Sustainable AgricultureABSTRACT
Quinoa (Chenopodium quinoa Willd), being a fast economic turnaround crop with high nutritional values and which is commercially desired, has been attracting the interest of producers, but information on production costs and profitability in national markets is still lacking, preventing the expansion of the cultivation. The aim of this study was to estimate the costs of production and profitability of four varieties of quinoa in the coffee triangle region for the agribusiness market in order to give technical support in decision-making. The study was conducted in the Tesorito Farm, owned by Universidad de Caldas, located in the municipality of Manizales (Colombia). The four varieties of quinoa selected were: golden quinoa from Bolivia, yellow quinoa crop Marangani, white sweet quinoa from Soracá and sweet Aurora quinoa from Nariño. The experimental design was completely randomized (BCA) with four replications. The yield (t ha-1), estimated production costs were evaluated and the economic indicator cost benefit (RB/C) were calculated, and a sensitivity analysis was carried out. Based on the analysis model adopted, it can be inferred that the yellow quinoa crop Marangani, the white sweet quinoa from Soracá and the golden quinoa from Bolivia had a high cost-benefit relationship with 1.99, 1.59 and 2.34 respectively; thus, the cultivation of quinoa is a profitable activity, being considered a good alternative for the region.
La quinua (Chenopodium quinoa Willd) al ser un cultivo de rápido retorno económico, con altos valores nutritivos y apetecido comercialmente, viene despertando el interés de los productores, pero todavía falta información sobre los costos de producción y su rentabilidad en los mercados nacionales, impidiendo una expansión del cultivo. El objetivo de este estudio fue estimar los costos de producción y rentabilidad de cuatro variedades de quinua en la región del eje cafetero, para el mercado agroindustrial, con el fin de dar un respaldo técnico en la toma de decisiones. El estudio se llevó a cabo en la Granja Tesorito, propiedad de la Universidad de Caldas, ubicada en el municipio de Manizales (Colombia). Las cuatro variedades fueron: Dorada de Bolivia, Amarilla de Marangani, Blanca dulce Soracá y Aurora dulce Nariño. El diseño experimental fue en bloques completos al azar (BCA) con cuatro repeticiones. Fue evaluado el rendimiento (t ha-1), estimados los costos de producción y calculados los indicadores económicos: relación beneficio costo (RB/C) y un análisis de sensibilidad. Por el modelo de análisis adoptado se puede inferir que las variedades Amarilla de Marangani, Blanca dulce Soracá y Dorada de Bolivia presentaron una alta relación beneficio costo con 1,99, 1,59 y 2,34 respectivamente; así, el cultivo de quinua es una actividad rentable, siendo considerada una buena alternativa para cultivo en la región.