Applied two formulations for controlling Tetranychus urticae koch on the cultivation of sesame intercropping with cotton in the field
Moshira A El-Shamy, Abd El-Rahman H A, Hend A Gad
The cotton, Gossypium barbadense L. known as white-gold and most one important economically and industrial crop in “Egypt” long ago and worldwide. Tetranychus urticae (two-spotted spider-mite) is the most important agricultural pests worldwide. Here we investigated the efficacy of acaricides, Cotton is notorious for being susceptible to many diseases. Bt cotton and sesame are mainly affected by sucking pests after a decrease in the intensity of pesticides. The polyphagous-pest Two-spotted, spider-mite, “Tetranychus utricae Koch.” infects range-wide crops. The pest “Tetranychus urticae Koch.” caused large losses in yields in most of agricultural- crops like, cottons, horticulture, ornamentals and vegetables-crops. In this study, the experiments were conducted in 2019-2020 seasons, in Sakha-Agricultural-Research- Station at Kafr El-Sheikh Gov. “310-07ˉ N-Latitude & 300-57ˉ E-longitude” with about 6 mean-elevation on sea-level “MSL” - Egypt, to studying tested compounds effect “Chlorfenapyr, Neem, jojoba extract and intercropping-yields, some yield attributes and pests population of cotton and sesame. Cotton (Gossypium barbadense L.) and sesame (Sesamum indicum) were sole cropped and intercropped, chlorfenapyr Nano was most-effective on density reduction of stages-motile populations of mite “T. urticae” followed by “chlorfenapyr common” while “neem extract Nano” was moderately-effect while, jojoba extract Nano appears lowest- effective compounds on density reduction of stages-motile populations of spider mite “T. urticae”. A one-week after-application showed decreasing in density of motile- stages populations of “T. urticae”. Generally, all-treatments were most-effective in population-density-reduction, based-on of this reduction; the all-compounds showed more-effective on density reduction of mite “T. urticae” population on cotton and sesame.The land equivalent ration (LER) and mean net incomes were taken the descending order: chlorfenapyr Nano > neem extract Nano > jojoba extract Nano effected on Sesame with Cotton in the two studied seasons.
Moshira A El-Shamy, Abd El-Rahman H A, Hend A Gad. Applied two formulations for controlling Tetranychus urticae koch on the cultivation of sesame intercropping with cotton in the field. International Journal of Entomology Research, Volume 7, Issue 2, 2022, Pages 116-125