Universidad Nacional Agraria La Molina. Escuela de Posgrado. Doctorado en Agricultura Sustentable

Se realizó una investigación para determinar la fluctuación poblacional de insectos plaga en el cultivo de vid (Vitis vinífera L.) variedad Red Globe, en El Carmen - Chincha, Perú. El estudio se desarrolló en un campo experimental de cinco hectáreas dividido en cinco sectores, en cada uno de las cuales fueron seleccionados aleatoriamente cinco plantas estratificándolas por cuadrantes, según la metodología recomendada por Sarmiento y Sánchez (2000).Los resultados indican que el “enrollador de la hoja” Platynota sp. (Lep.: Tortricidae) se presentó desde el envero hasta la etapa de post-cosecha. El “esfíngido de la vid” Eumorpha vitis (L.) se registró en la etapa fenológica de post-cosecha. La “filoxera de la vid” Daktulosphaera vitifoliae (Fitch), se observó sólo en la fase radicícola, alcanzando sus valores más altos de incidencia en la etapa posterior a la ...

Organic fertilizers provide important benefits to the soil and therefore to plants, so it is important to evaluate their effects on different crops. In the present study, the effect of seven organic fertilizers and two levels of organic fertilization was evaluated for the variables plant height, dry matter, total nitrogen extraction, total phosphorus extraction and total potassium extraction in Agroceres variety corn as an indicator plant. under greenhouse conditions in Ica, in a completely randomized design. Chicken manure was the best organic source for the variable plant height. Compost treatments were superior for the total nitrogen extraction variable. The manure treatments stood out in the variable total phosphorus extraction. No significant differences were found between organic sources for total potassium extraction or a clear trend for the dry matter variable. Finally, significa...

Organic fertilizers provide important benefits to the soil and therefore to plants, so it is important to evaluate their effects on different crops. In the present study, the effect of seven organic fertilizers and two levels of organic fertilization was evaluated for the variables plant height, dry matter, total nitrogen extraction, total phosphorus extraction and total potassium extraction in Agroceres variety corn as an indicator plant. under greenhouse conditions in Ica, in a completely randomized design. Chicken manure was the best organic source for the variable plant height. Compost treatments were superior for the total nitrogen extraction variable. The manure treatments stood out in the variable total phosphorus extraction. No significant differences were found between organic sources for total potassium extraction or a clear trend for the dry matter variable. Finally, significa...