Tank mixture of pesticides and foliar fertilizes for Triozoida limbata control in guava trees (Psidium guajava L.) 1

Although the tank mixture of pesticides and foliar fertilizers is common practice in agriculture, further clarification and scientific support is needed to be regulated. Thus, the objective of this work was to evaluate the effect of tank mixture of an organosilicon adjuvant and manganese foliar fert...

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Bibliographic Details
Published inRevista Ceres Vol. 66; no. 4; pp. 297 - 306
Main Authors Zandonadi, César Henrique Souza, Alves, Thales Cassemiro, de Assunção, Heli Heros Teodoro, Alves, Guilherme Sousa, Silva, Sergio Macedo, da Cunha, João Paulo Arantes Rodrigues
Format Journal Article
LanguageEnglish
Published Vicosa Universidade Federal de Viçosa-UFV, Revista Ceres 01.07.2019
Subjects
Agricultural practices
Agrochemicals
Cultivars
Cultivation
Efficiency
Electrical resistivity
Fertilizers
Guava
Imidacloprid
Infestation
Insecticides
Leaves
Manganese
Organic chemistry
Pesticides
pH effects
Psidium guajava
Quadrants
Siloxanes
Spray deposition
Surface tension
Trees
Triozoida limbata
Viscosity
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Summary:Although the tank mixture of pesticides and foliar fertilizers is common practice in agriculture, further clarification and scientific support is needed to be regulated. Thus, the objective of this work was to evaluate the effect of tank mixture of an organosilicon adjuvant and manganese foliar fertilizer throw the insecticide imidacloprid effectiveness over Triozoida limbata control in guava trees. The experimental plot was considered with four trees followed in the same cultivation line subdivided into 4 quadrants. The experiment followed a randomized block design with split plots, with four replications. Treatments were T1 – Imidacloprid (Imid.); T2 – Imid. + Polyether-polymethyl siloxane copolymer (Sil.); T3 – Imid. + MnSO4; T4 – Imid. + Sil. + MnSO4; T5 – Control (no application). Physical-chemical characteristics, spray deposition over the leaves and losses to the soil, guava psyllid percentage of infestation and nymph’s number were evaluated. The addition of foliar fertilizer on the mixture reduced the pH and surface tension and increased the electric conductivity and viscosity of the insecticide solutions. The silicon adjuvant reduced the surface tension and increased the viscosity and the pH. The tank mixture of organosilicon adjuvant and manganese foliar fertilizer do not influence the efficacy level of the insecticide.
ISSN:0034-737X
2177-3491