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Quinoa crops in the Peruvian highlands are affected by mildew disease, which can cause losses of up to 90 % of production. The objective of this study was to evaluate the effect of strains of Trichoderma sp and efficient microorganisms (EM) in the control of mildew and yield of quinoa. In the experimental field of the International Potato Center (IPC) Camacani of the National University of the High Plateau of Puno department, in the agricultural campaign 2016-2017, there were sowed control seeds and others pelletized with eight treatments: four Trichoderma sp strains, three doses of EM (5 %, 10 %, and 15 %) and a mixture of Trichoderma sp and EM strains (15 %), later there were made four foliar applications of each one of the eight treatments to 1x107 ufc.ml-1, in each critical moment of the phenological cycle. It was determined the area under the curve of the disease progress (AUDPC) and the yield. All treatments applied significantly favored the reduction of the pathogen and crop yield. The most effective treatment in the reduction of mildew was Trichoderma sp TETQ-3 strain, followed by EM at 5 % with AUDPC of 586.19 and 586.44 respectively, which is equivalent to 53 % less than the control. In terms of yield, ME at 5 % increased production by 208 %, from 1256 kg/ha to 3872 kg/ha. The use of these microorganisms represents an alternative of sustainable use for the biocontrol of phytopathogens and growth promotion in quinoa crops. [ABSTRACT FROM AUTHOR]

In order to generate a new variety of quinoa for the northern highlands of Peru and contribute to the competitiveness of this andean grain, this research was carried out between 2013 and 2018. Phases of introduction and evaluation of germplasm, genetic improvement and advanced evaluation of promising materials were carried out. The first two phases carried out in INIA experimental fields and the third in farmer's fields. Phenotypic characteristics, physiological maturity, mildew reaction and grain yield were evaluated. Also, there was opinion of farmers. Quantitative data was analyzed using ANVA and Duncan's test. From the Genetic Compound A, introduced from the central highlands, the new variety of quinoa was generated, called INIA 437 Red of the North. It is accepted by the farmers of the research, It has white grain and semi-sweetness; purple in foliage and panicle; as well as outstanding characteristics of mildew tolerance and productivity, showing less damage to the disease and greater yield than the Witness, White of Junín variety; also It has greater profitability and productive stability than this; being suitable for cultivation in the study area. [ABSTRACT FROM AUTHOR]