La quinua es un cultivo con alto potencial económico y social en la Región Puno, Perú; sin embargo, su producción está afectada por la baja fertilidad de los suelos. Una forma de enfrentar este problema sin afectar el ambiente es mediante el uso de microorganismos benéficos. El objetivo de este estudio fue evaluar el efecto de cepas de Trichoderma sp. en la nutrición de la quinua var. Salcedo INIA y en las características químicas del suelo. La investigación se desarrolló en el Laboratorio de Fitopatología e instalaciones de la Escuela Profesional de Ingeniería Agronómica, ubicado en la ciudad de Puno durante los meses de enero a julio de 2015. Se emplearon cinco cepas de Trichoderma sp. para la inoculación en plantas de quinua mediante la aplicación al suelo o usando semilla peletizada. Al final del ciclo del cultivo (seis meses) se evaluaron los niveles de N, P y K tant...

Debido a los bajos rendimientos registrados en la quinua (Chenopodium quinoa Willd), se realizó el estudio sobre la "Biofertilización con cepas de Trichoderma sp en el crecimiento y nutrición de quinua var. Salcedo INIA en condiciones de invernadero" con los objetivos específicos: a) Determinar el efecto de dos métodos de inoculación de cepas de Trichoderma sp en el crecimiento de planta y rendimiento de semillas de quinua, b) Evaluar el efecto de cepas de Trichoderma sp en la nutrición de plantas de quinua, c) Determinar la influencia de cepas de Trichoderma sp en las características químicas del substrato suelo. Se desarrolló en el laboratorio de Fitopatología e invernadero de la Escuela Profesional de Ingeniería Agronómica (EPIA), ubicado en la ciudad de Puno - Perú durante los meses de Enero - Julio del 2015. Se empleó cinco cepas de Trichoderma sp, para la inoculació...

Downy mildew is the most important disease that affects quinoa (Chenopodium quinoa Willd.) in the Peruvian altiplano, it’s caused by pseudo fungi Peronospora variabilis Gäum. It causes yield reductions up to 99%. With the purpose of evaluating the effect of Trichoderma sp strains with endophytic capacity in the control of the mildew and improve quinoa yield var. Salcedo INIA, the seeds were fully covered (1x106 ufc. seed-1) and substrate was infested with spores of 10 Trichoderma strains to determine the percentage of endophytic colonization in quinoa plants at 30 and 60 days age under controlled conditions;four leaf applications (1x107 ufc.ml-1) and severity evaluations were also performed to determine the area under the disease progress curve (AUDPC) and grain yield under field conditions. All the strains managed to colonize different parts of the ...

Downy mildew is the most important disease that affects quinoa (Chenopodium quinoa Willd.) in the Peruvian altiplano, it’s caused by pseudo fungi Peronospora variabilis Gäum. It causes yield reductions up to 99%. With the purpose of evaluating the effect of Trichoderma sp strains with endophytic capacity in the control of the mildew and improve quinoa yield var. Salcedo INIA, the seeds were fully covered (1x106 ufc. seed-1) and substrate was infested with spores of 10 Trichoderma strains to determine the percentage of endophytic colonization in quinoa plants at 30 and 60 days age under controlled conditions;four leaf applications (1x107 ufc.ml-1) and severity evaluations were also performed to determine the area under the disease progress curve (AUDPC) and grain yield under field conditions. All the strains managed to colonize different parts of the ...

Downy mildew is the most important disease that affects quinoa (Chenopodium quinoa Willd.) in the Peruvian altiplano, it’s caused by pseudo fungi Peronospora variabilis Gäum. It causes yield reductions up to 99%. With the purpose of evaluating the effect of Trichoderma sp strains with endophytic capacity in the control of the mildew and improve quinoa yield var. Salcedo INIA, the seeds were fully covered (1x106 ufc. seed-1) and substrate was infested with spores of 10 Trichoderma strains to determine the percentage of endophytic colonization in quinoa plants at 30 and 60 days age under controlled conditions;four leaf applications (1x107 ufc.ml-1) and severity evaluations were also performed to determine the area under the disease progress curve (AUDPC) and grain yield under field conditions. All the strains managed to colonize different parts of the ...

Downy mildew is the most important disease that affects quinoa (Chenopodium quinoa Willd.) in the Peruvian altiplano, it’s caused by pseudo fungi Peronospora variabilis Gäum. It causes yield reductions up to 99%. With the purpose of evaluating the effect of Trichoderma sp strains with endophytic capacity in the control of the mildew and improve quinoa yield var. Salcedo INIA, the seeds were fully covered (1x106 ufc. seed-1) and substrate was infested with spores of 10 Trichoderma strains to determine the percentage of endophytic colonization in quinoa plants at 30 and 60 days age under controlled conditions;four leaf applications (1x107 ufc.ml-1) and severity evaluations were also performed to determine the area under the disease progress curve (AUDPC) and grain yield under field conditions. All the strains managed to colonize different parts of the ...

The use of endophytic fungi is an effective alternative to control pathogens, improve plant metabolism and yield in crops. The objective of this study was to assess the effect of five different strains of Trichoderma sp. on the growth and yield of quinoa plants (Chenopodium quinoa Willd) by using two methods of inoculation: a) pelleted seed, and b) drenching with the endophytic fungi. A completely randomized design with a 2 x 5 factorial arrangement, plus a control with five repetitions was used. The 11 treatments were evaluated with five repetitions. Yield, and aerial and root growth variables were determined. There were no interactions between strains and inoculation methods for aerial plant growth, but there were for root growth and yield. The seed pelleting method produced a higher aerial growth compared to the drench method. In root length, the greatest values were found with the TE...

Potato consumption occurs throughout the Altiplano of Puno and among the organic wastes produced daily at home is potato peelings. The objective of this research is the production of tubers from buds present in potato peels with four strains of Trichoderma sp. The study was carried out under an experimental design with four strains of Trichoderma sp, in a randomized way with a total of 5 treatments that were distributed with two repetitions with a total of 12 experimental units, the potato peels with buds were selected, including a fertilization with four native and commercial strains of Trichoderma, some of them were codified since the species has not yet been identified, to support the growth of seedlings so, in this way, it gives value to the "organic production". The results found evidenced that the greater quantity of tubers was obtained with the strain of Trichoderma sp. 3 with 121...

Potato consumption occurs throughout the Altiplano of Puno and among the organic wastes produced daily at home is potato peelings. The objective of this research is the production of tubers from buds present in potato peels with four strains of Trichoderma sp. The study was carried out under an experimental design with four strains of Trichoderma sp, in a randomized way with a total of 5 treatments that were distributed with two repetitions with a total of 12 experimental units, the potato peels with buds were selected, including a fertilization with four native and commercial strains of Trichoderma, some of them were codified since the species has not yet been identified, to support the growth of seedlings so, in this way, it gives value to the "organic production". The results found evidenced that the greater quantity of tubers was obtained with the strain of Trichoderma sp. 3 with 121...