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Ação de inseticidas naturais no controle de Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) em milho cultivado em agroecossistema de várzea
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lima, José Farid Maia Grützmacher, Anderson Dionei Cunha, Uemerson Silva Da Porto, Marilda Pereira Martins, José Francisco Da Silva Dalmazo, Gabriel Ollé |
| Copyright Year | 2008 |
| Abstract | The efficiency of natural insecticide was studied in control Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) in corn crop cultivated in low agroecossistem, under natural infestation. The experiment was conducted at the experimental area of Embrapa Clima Temperado - Estacao Experimental Terras Baixas, agricultural year 2005/2006. The experimental diagram was of blocks in factorial design (9 x 2), with 9 treatments: T1- NeemAzal-T/S (0.25%); T2- NeemAzal-T/S (0.5%); T3- Rotenat CE (0.5%); T4- Natuneem agricola (0.5%); T5- Rotenat CE + Natuneem agricola (0.25+0.25%); T6- Dalneem emulsionable (0.5%); T7- Organic neem (0.5%); T8- Match CE (0.1%) (Standard) and T9- Water (check), with two times of sowing and four repetitions. Three applications of treatments were carried for time, determining the percentage of plants attacked eight days after each application and yield of grain in kg ha-1. There was significant difference in control of fall armyworm among time of sowing, with a major efficiency of control for first time, pointing out among the natural insecticide the NeemAzal - T/S (0.5%) and Dalneem emulsionable (0.5%), with great potential of use in sowing carried out in November. The yield doesn't differ among time, pointing out among the natural insecticide the Neem Azal - T/S at 0.5%, bringing an alternative in control of S. frugiperda. There is a negative and significant correlation among plants attacked and yield of grain in kg ha-1, with major potential of control for the first time sowing. |
| Starting Page | 607 |
| Ending Page | 613 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1590/S0103-84782008000300003 |
| Volume Number | 38 |
| Alternate Webpage(s) | http://www.scielo.br/pdf/cr/v38n3/a03v38n3.pdf |
| Alternate Webpage(s) | https://doi.org/10.1590/S0103-84782008000300003 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
