This research has developed in the field of plant pathology at the lnstitute of Tropical Crops - Tarapoto (ICT - T) located in Shilcayo district, province and region of San Martin - Peru. This study aimed to determine the influence of strains of Trichoderma sp endophyte on growth, foliar nutrition and resistance to Phytophthora palmivora in cocoa seedlings (Theobroma cacao L.) in the greenhouse, using cocoa IMC- 67 clone. 14 treatments were considerad, of which four of them used individual strains of Trichoderma Nº. 17, 22, 91 and 126, is also conducted strain combinations in dual form in six treatments was conducted also a combination of all strains (Treatment 11) and used three controls (Treatments 12, 13 and 14). In this research, we conducted three inoculations with strains of Trichoderma sp via drench, the first day of planting, the second at 45 days after sowing (dds), and the thi...

Este trabajo se desarrolló en un campo experimental de Plukenetia volubilis L. (Sacha Inchi), propiedad del IIAP – San Martín (Instituto de Investigaciones de la Amazonia Peruana), en la Provincia y Región de San Martín. El objetivo fue conocer la absorción de nutrientes del Plukenetia volubilis L. (Sacha Inchi), en su segundo ciclo de producción en la provincia de San Martin, usando plantas de Sacha inchi de 221 DDS, (7 meses de edad), ecotipo Mishquiyacu. Se consideró 3 tratamientos, distribuidos en un DBCA con 4 bloques o repeticiones, utilizando como fuentes nutritivas inorgánicas al Nitrato de amonio (NH4NO3), Súper fosfato triple (P2O5) y Cloruro de Potasio (K2O), estas fuentes fueron aplicadas considerando, las siguientes dosis de fertilización para los tratamientos; T1, Dosis baja (0 - 0 - 0); T2, Dosis media (22,75 - 2,2 - 15,86) y T3, Dosis alta (39,6 – 4,73 – 2...

Sacha inchi has a high content of polyunsaturated fatty acids and is a promising crop for local communities and the food industry. However, to improve its production and quality, it is essential to understand its nutritional requirements, so the objective of this study was to evaluate the nutrient uptake, growth and yield of sacha inchi in final field in the province of San Martin, Peru. They used a randomized complete block design with three treatments and four replicates, applying ammonium nitrate (NH4NO3), triple superphosphate Ca(H2PO4)2 and potassium chloride (KCl), in three doses: T0 = control, T1= medium dose and T2= high dose, and five samplings of botanical parts. Treatment T2 showed better results compared to the other treatments, showing that nitrogen, phosphorus and calcium (N-P-Ca) were the most absorbed macronutrients and sodium, iron and manganese (Na-Fe-Mg) were the most ...