The chemical fertilizer represents for 20 and 30 % of cost the production a crop, used correctly increase productivity and profitability, however, each year increase the among of fertilizer to apply, due to deficiency of soil adsorption and absorption by the plant. Beging maize the third most important crop in Peru, with a significant impact on economic and social activity in 2014, only 40% of the offered maize corresponded of the production nacional. 37 weeds were identified associated with crops of maize from agricultural fields Monsefú districts and Reque, Lambayeque Region, with 68% being dicotyledonous against monocots with 32%. Bacteria were isolated from the rhizosphere of weeds, getting 305 pure cultures of bacteria, 133 of which (43.7%) were identified as Azotobacter spp. Investigated the biochemical reaction in nitrate reduction, utilization of sucrose, glucose, maltose, manni...

The chemical fertilizer represents for 20 and 30 % of cost the production a crop, used correctly increase productivity and profitability, however, each year increase the among of fertilizer to apply, due to deficiency of soil adsorption and absorption by the plant. Beging maize the third most important crop in Peru, with a significant impact on economic and social activity in 2014, only 40% of the offered maize corresponded of the production nacional. 37 weeds were identified associated with crops of maize from agricultural fields Monsefú districts and Reque, Lambayeque Region, with 68% being dicotyledonous against monocots with 32%. Bacteria were isolated from the rhizosphere of weeds, getting 305 pure cultures of bacteria, 133 of which (43.7%) were identified as Azotobacter spp. Investigated the biochemical reaction in nitrate reduction, utilization of sucrose, glucose, maltose, manni...

Introduction In recent years, the number of malaria cases in native communities from Condorcanqui, Amazonas has considerably increased. Plasmodium vivax malaria is endemic in the region and the re-introduction of P. falciparum was reported in 2019. Methods Here, we compiled and analyzed malaria and COVID-19 data reported by the Regional Direction of Health (DIRESA) during the 2020. Additionally, we performed an odds ratio analysis to evaluate significant associations between COVID-19 symptoms and previous malaria infections. Results In 2020, 1547 malaria (97% were P. vivax) and 5968 COVID-19 cases were reported. Furthermore, 96 patients got COVID-19 after getting a malaria infection. From these, 87 were symptomatic (90.6%), and mostly adults, ages 30 to 59 (62.3%). Also, we found that malaria previous infections represent a risk for the presence of symptoms such as fever, cough, throat p...