Resumen

MOLLISACA MAMANI, Pablo Esteban  y  BONIFACIO FLORES, Alejandro. Yield and bromatological analysis of threshing by-products of four varieties of quinoa (Chenopodium quinoa Willd.) in Kiphakiphani, La Paz - Bolivia. RIIARn [online]. 2021, vol.8, n.3, pp.59-65. ISSN 2409-1618.  https://doi.org/10.53287/vjfz8823in19b.

Investigations carried out on quinoa are focused mainly on agronomic behavior, very little has been addressed on the by-products of harvest and threshing which are stem remains and perigonia, pedicels and ground leaves. The information available on the uses of the by-products is very scarce. The yield of the by-products by variety is not known and there is no information on the bromatological composition of the by-products. For this reason, the yield of grain and quinoa threshing by-products has been evaluated under Complete Random Blocks design. The research has been complemented with the bromatological analysis of threshing by-products and with the collection of information on their uses in different communities in the northern and central highlands of Bolivia. The results reported significant differences for the yield of the varieties and not significant for the by-products. The Jacha Grano variety was the one with the highest yield (3 063.25 kg ha-1) followed by the Nayjama varietie (2 821.75 kg ha-1), Surumi (2 405.5 kg ha-1). Surumi (2 405.5 kg ha-1) and Chucapaca (1 796.75 kg ha-1). The average yield of quinoa steme was 2 226.87 kg ha-1 and of fine part of the by-product 1 192.5 kg ha-1. The stem contains between 1.66 and 5.66 % of protein and the fine part of the by-product between 12 and 14.7 %. In conclusion, the varieties of quinoa studied have differences in grain yield, and not so in its by-product. Threshing by-products can be used in food supplementation for llamas due to their protein content (12 to 14.7 % in jipi). The above shows that quinoa is a multipurpose crop with good options to contribute positively to quinoa-llama integration in production systems in arid zones.

Palabras clave : Quinoa (Chenopodium quinoa Willd.); yield; brushwood; jipi; grain; uses.

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