Cocoa (Theobroma cacao L.) is an important crop for Peru; reports of high cadmium content (Cd2+) cause problems for the sector. However, research highlights that organic management improves the microbiological activity of the soil and the absorption of cadmium in almonds. Therefore, the effect of compost and NPK in different soil microbial groups and the available Cd in soils and cocoa beans CCN-51 was evaluated. A completely randomized block design was used, with four treatments and four repetitions, where: T1 control, T2 compost (3 000 kg. ha-1), T3 NPK (84-35-161) and T4: compost (1 500 kg. ha-1) plus NPK (42-18-80). The population of viable aerobes, actinomycetes, fungi and nitrogen fixers were evaluated using the plate count technique with serial dilutions (103). The Cd available with 0.05 M EDTA and in almonds by 4: 1 perchloric nitric acid digestion. The population of viable ...

Cocoa (Theobroma cacao L.) is an important crop for Peru; reports of high cadmium content (Cd2+) cause problems for the sector. However, research highlights that organic management improves the microbiological activity of the soil and the absorption of cadmium in almonds. Therefore, the effect of compost and NPK in different soil microbial groups and the available Cd in soils and cocoa beans CCN-51 was evaluated. A completely randomized block design was used, with four treatments and four repetitions, where: T1 control, T2 compost (3 000 kg. ha-1), T3 NPK (84-35-161) and T4: compost (1 500 kg. ha-1) plus NPK (42-18-80). The population of viable aerobes, actinomycetes, fungi and nitrogen fixers were evaluated using the plate count technique with serial dilutions (103). The Cd available with 0.05 M EDTA and in almonds by 4: 1 perchloric nitric acid digestion. The population of viable ...

Cocoa (Theobroma cacao L.) is an important crop for Peru; reports of high cadmium content (Cd2+) cause problems for the sector. However, research highlights that organic management improves the microbiological activity of the soil and the absorption of cadmium in almonds. Therefore, the effect of compost and NPK in different soil microbial groups and the available Cd in soils and cocoa beans CCN-51 was evaluated. A completely randomized block design was used, with four treatments and four repetitions, where: T1 control, T2 compost (3 000 kg. ha-1), T3 NPK (84-35-161) and T4: compost (1 500 kg. ha-1) plus NPK (42-18-80). The population of viable aerobes, actinomycetes, fungi and nitrogen fixers were evaluated using the plate count technique with serial dilutions (103). The Cd available with 0.05 M EDTA and in almonds by 4: 1 perchloric nitric acid digestion. The population of viable ...

Cocoa (Theobroma cacao L.) is an important crop for Peru; reports of high cadmium content (Cd2+) cause problems for the sector. However, research highlights that organic management improves the microbiological activity of the soil and the absorption of cadmium in almonds. Therefore, the effect of compost and NPK in different soil microbial groups and the available Cd in soils and cocoa beans CCN-51 was evaluated. A completely randomized block design was used, with four treatments and four repetitions, where: T1 control, T2 compost (3 000 kg. ha-1), T3 NPK (84-35-161) and T4: compost (1 500 kg. ha-1) plus NPK (42-18-80). The population of viable aerobes, actinomycetes, fungi and nitrogen fixers were evaluated using the plate count technique with serial dilutions (103). The Cd available with 0.05 M EDTA and in almonds by 4: 1 perchloric nitric acid digestion. The population of viable ...

El manejo de plagas en los cultivos de palto en la región Huánuco se basa en el uso de pesticidas de amplio espectro que son muy agresivos con el medio ambiente y no siempre su aplicación y dosificación es realizada de manera correcta, lo cual implica mayores riesgos para la salud, resistencia, resurgencia de nuevas plagas y desaparición de la fauna benéfica. El uso de entomopatógenos es un método de control reciente viable y eficaz. En ese contexto, se evaluó la eficacia de Bacillus thuringiensis var. kurstaki, B. subtilis y caolín en la lucha contra el ácaro Oligonychus yothersi en los cultivos de palto. Se utilizó el diseño completamente al azar con cuatro tratamientos y tres repeticiones, la muestra estuvo constituido de tres árboles por unidad experimental, la variable respuesta fue el número de ácaros móviles previo y post aplicación en 10 hojas maduras, registrad...

El manejo de plagas en los cultivos de palto en la región Huánuco se basa en el uso de pesticidas de amplio espectro que son muy agresivos con el medio ambiente y no siempre su aplicación y dosificación es realizada de manera correcta, lo cual implica mayores riesgos para la salud, resistencia, resurgencia de nuevas plagas y desaparición de la fauna benéfica. El uso de entomopatógenos es un método de control reciente viable y eficaz. En ese contexto, se evaluó la eficacia de Bacillus thuringiensis var. kurstaki, B. subtilis y caolín en la lucha contra el ácaro Oligonychus yothersi en los cultivos de palto. Se utilizó el diseño completamente al azar con cuatro tratamientos y tres repeticiones, la muestra estuvo constituido de tres árboles por unidad experimental, la variable respuesta fue el número de ácaros móviles previo y post aplicación en 10 hojas maduras, registrad...