title: Logrank test and Interval Overlap Test for Bactericera cockerelli (Hemiptera: Triozidae) under different fertilization treatments for 7705 tomato hybrid.
abstract: It is known that some nutrients can have both negative and positive effects on some populations of insects. To test this, the Logrank test and the Interval Overlap Test were evaluated for two crop cycles (February-May and May-August) of the 7705 tomato hybrid, and the effect on the psyllid, Bactericera cockerelli (Sulc.) (Hemiptera: Triozidae), was examined under greenhouse conditions. Tomato plants were in polythene bags and irrigated with the following solutions: T1-Steiner solution, T2-Steiner solution with nitrogen reduced to 25%, T3-Steiner solution with potassium reduced to 25%, and T4-Steiner solution with calcium reduced to 25%. In the Logrank test, a significant difference was found when comparing the survival parameters of B. cockerelli generated from the treatment cohorts: T1-T2; T1-T3; T1-T4; T2-T3; and T3-T4, while no significant differences were found in the T2-T4 comparison in the February-May cycle. In the May-August cycle, significant differences were found when comparing the survival parameters generated from the treatment cohorts: T1-T2; T1-T3; and T1-T4, while no significant differences were found in the T2-T3; T2-T4; and T3-T4 comparisons of survival parameters of B. cockerelli fed with the 7705 tomato hybrid. Also, the Interval Overlap Test was done on the treatment cohorts (T1, T2, T3, and T4) in the February-May and May-August cycles. T1 and T2 compare similarly in both cycles when feeding on the treatments up to 36 d. Similarly, in T1 and T3, the behavior of the insect is similar when feeding on the treatments up to 40 and 73 d, respectively. Comparisons T2-T3 and T2-T4 are similar when feeding on both treatments up to 42, 38 and 37, 63 d, respectively. Finally, the T3-T4 comparison was similar when feeding in both treatments up to 20 and 46 d, respectively.
authors.affiliation: Posgrado en Fitosanidad, Colegio de Postgraduados, Campus Montecillo Km 36.5 Carr, México-Texcoco, Montecillo, C.P. 56230, Estado de México, México.
authors.forename: Haidel
authors.initials: H
authors.lastname: Vargas-Madríz
authors.affiliation: Posgrado en Fitosanidad, Colegio de Postgraduados, Campus Montecillo Km 36.5 Carr, México-Texcoco, Montecillo, C.P. 56230, Estado de México, México nestor@colpos.mx.
authors.forename: Néstor
authors.initials: N
authors.lastname: Bautista-Martínez
authors.affiliation: Posgrado en Fitosanidad, Colegio de Postgraduados, Campus Montecillo Km 36.5 Carr, México-Texcoco, Montecillo, C.P. 56230, Estado de México, México.
authors.forename: Jorge
authors.initials: J
authors.lastname: Vera-Graziano
authors.affiliation: Posgrado en Fitosanidad, Colegio de Postgraduados, Campus Montecillo Km 36.5 Carr, México-Texcoco, Montecillo, C.P. 56230, Estado de México, México.
authors.forename: Prometeo
authors.initials: P
authors.lastname: Sánchez-García
authors.affiliation: Departamento de Biotecnología Agrícola, CIIDIR-IPN Sinaloa, Boulevard Juan de Dios Bátiz Paredes 250, Col. San Joachin, Guasave, Sinaloa, México.
authors.forename: Cipriano
authors.initials: C
authors.lastname: García-Gutiérrez
authors.affiliation: Posgrado en Ciencia Vegetal, Colegio de Postgraduados, Campus Tabasco, Carretera Libre Cárdenas-Coatzacoalcos Km 21, Poblado C-27, Municipio de Cárdenas, Tabasco, C.P. 86500, México.
authors.forename: Saúl
authors.initials: S
authors.lastname: Sánchez-Soto
authors.affiliation: Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria-Centro Nacional de Referencia Fitosanitaria, C. Guillermo Pérez Valenzuela 127, Col. Del Carmen Coyoacán, Del. Coyoacán, 04100, D. F., México.
authors.forename: Clemente de Jesús
authors.initials: Cde J
authors.lastname: García-Avila
mesh_terms: D000383:Agriculture / Q000379:methods*; D000818:Animals; D005308:Fertilizers / Q000032:analysis*; D020387:Food Chain; D006430:Hemiptera / Q000254:growth & development*; D008136:Longevity; D018551:Solanum lycopersicum / Q000254:growth & development*; D009758:Nymph / Q000254:growth & development; D012621:Seasons
chemical_list: D005308:Fertilizers
keywords: Bactericera cockerelli; mortality parameter; natality parameter; nutrient analysis