Bibliographic citations
Alvarez, C., (2019). Rendimiento y crecimiento de cuatro variedades de quinua (Chenopodium quinoa Willd.) bajo tres densidades de siembra en riego por goteo [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/3869
Alvarez, C., Rendimiento y crecimiento de cuatro variedades de quinua (Chenopodium quinoa Willd.) bajo tres densidades de siembra en riego por goteo []. PE: Universidad Nacional Agraria La Molina; 2019. https://hdl.handle.net/20.500.12996/3869
@misc{sunedu/3013154,
title = "Rendimiento y crecimiento de cuatro variedades de quinua (Chenopodium quinoa Willd.) bajo tres densidades de siembra en riego por goteo",
author = "Alvarez Vasquez, Carla Paola",
publisher = "Universidad Nacional Agraria La Molina",
year = "2019"
}
The field phase of the experiment was carried out in the Irrigation Unit of the Soil Academic Department of the La Molina Agrarian University between the months of september 2013 to february 2014. The objective was to study three planting densities (D1: 100,000 plants/ha, D2: 150,000 plants/ha and D3: 200,000 plants/ha.) In the yield, its components, growth variables, agronomic parameters, grain quality and perform the agro-economic analysis in four varieties of quinoa; La Molina 89, Salcedo INIA, Negra Collana and Pasankalla; under drip localized irrigation. The statistical design was of divided plots. The four varieties of quinoa under study were randomly assigned at the level of the subplots within each complete plot. Seeding densities were randomly assigned at the level of plots within each block, with four repetitions. The results of the experiment indicate that the interaction effects between quinoa varieties and planting densities are highly significant for commercial yield, yield per panicle and thousand grain weight. The highest commercial yield of quinoa occurs with the variety La Molina 89 at the density of 200,000 plants/ha with 5,288 kg/ha of quinoa grain, and the lower yield in the Pasankalla variety at the density of 100,000 plants/ha with 444 kg/ha, similar to the Negra Collana variety, with percentage differences of 1.190%. In addition, Salcedo INIA, with yields of 1,491 kg/ha presented differences of 354.6% with respect to La Molina 89, but exceeded Pasankalla and Negra Collana by 259.3%. The growth variables of plant height, panicle diameter, foliar area, dry matter and its components leaves, stems and panicle had highly significant interaction effects, Variety x Density. Only panicle length showed significant differences for the interaction of factors. La Molina 89 at the density of 100,000 plants/ha had the largest panicle diameter, the highest plant height, the largest leaf area and the highest total dry matter, unlike Salcedo INIA, Pasankalla and Negra Collana that presented the lowest values to 200,000 plants/ha. On the other hand, the components of quality, humidity of grain, percentage of saponins and granulometry presented highly significant effect for the interaction Variety x Density. In contrast, the percentage of proteins only presents high statistical significance for Quinoa Varieties. Pasankalla is characterized by having the highest percentage of grains of 1.4 mm. The lowest value characterizes Negra Collana. Likewise, the highest values in the percentage of proteins characterized the variety Salcedo INIA (14.1%) and La Molina 89 (14.0%). The lowest percentages in Pasankalla (11.3%) and Negra Collana (11.4%). Under the conditions of the trial, La Molina 89 presented the highest water use efficiency (EUA) with 0.88 kg of quinoa grain per m3 of water applied and the Negra Collana and Pasankalla varieties the lowest Harvest Index (CI) with 8.7% and 8.9% respectively. In general, there was a low leaf area index (LAI) of 0.48 m2 / m2 and a high transpiration coefficient (CT) of 440.2 l / kg. The agroeconomic analysis indicates that the highest profitability index (117.6%) was presented in the La Molina 89 variety at a density of 200,000 plants /ha. For the Salcedo INIA, Pasankalla and Negra Collana varieties, their profitability indices were negative.
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