| Table of contents Manglar vol.19 no.2 Tumbes Apr./Jun. 2022 Original articles | | | | · Yield of essential oil from Bursera graveolens wood: Utilization of chips, shavings and sawdust Puescas, Miguel; Herrera, Eber; Moscol, José; Solís, José
| | | | · Correlation between the concentration of heavy metals in drinking water and their concentration in the surface water of the Tumbes River, Peru García-Peña, Andy; Rimaycuna, Jhon; Herrera, Eber; Bermejo, Luis; Cruz, Gerardo
| | | | · Phytophagous insects associated with quinoa crop (Chenopodium quinoa Willd) in winter and its biological controllers Soca-Flores, Melva Nelly; Vergara, Clorinda E.; Callohuari, Yony T.; Chávez, Antonio Jerí
| | | | · Native stingless bees in Tumbes, Peru: Genomic characterization and bacterial community Valladolid R., Milton; Chapoñan D., Henry W.; García-Seminario, Ramón; Labán L., Pedro G.; Díaz C., Néstor; Deza N., Carlos A.; Garrido R., Miguel A.; Sánchez A., Dicson; Zapata O., Jorge; Mialhe, Eric Louis
| | | | · Stinting larvae (Lepidoptera) associated with horticultural crops in Cerro Punta, Chiriquí, Panama Collantes, Rubén; Santos, Alonso; Pittí, Javier; Atencio, Randy; Barba, Anovel; Cardona, José
| | | | · The competitiveness of agricultural projects in the Amazonas, San Martín, Loreto and Ucayali Regions Reategui-Del Aguila, Keneth; Aguirre Baique, Nazario; Buendía Molina, Marilyn Aurora; Aguirre Gavidia, Darwin Jhonatan
| | | | · Removal Efficiency and impact of wastewater treatment system in the urban and rural sector of the Santa Elena Province Humanante Cabrera, Juan José; Moreno Alcivar, Lucrecia Cristina; Grijalva-Endara, Ana; Tinedo, Ricardo Williams Saldoya; Tomalá, Joan Alberto Suárez
| | | | · Isolation and identification of Leishmania sp of Amblyomma naponense and Amblyomma humerale collected from Pecari tajacu, Tayassu pecari and Chelonoide denticulata Rojas-Jaimes, Jesús; Zarate-Rendon, Daniel; Montoya-Arauco, Gino
| | | Review articles | | | | · The situation of the Asian citrus psyllid (Diaphorina citri Kuwayama) (Hemiptera: Liviidae), vector of Huanglongbing in Ecuador García, Nery; Zambrano, Michel; Chirinos, Dorys
| | | | · Hydrological models for the estimation of ecological flow Alvarez Villanueva, Jairo Isaí; Huamán Vidaurre, José Francisco
| | | | · Identification methods for root-knot nematode Meloidogyne Vélez Zambrano, Sergio Miguel; Guzmán Cedeño, Angel Monserrate
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