Planococcus spp. can cause losses close to 100% of the conilon coffee production in highly infested crops. It is a polyphagous pest that affects several cultures and can be present in host plants that appear spontaneously in the cultivation areas. In this context, the objective was to carry out the survey of weed hosts for mealybug in conilon coffee crops relating to the phenological stage of the culture. For this, the survey was carried out in two areas cultivated with conilon coffee in the northwest region of the state of Espírito Santo, Brazil. Weed collections were carried out monthly, in both locations, for a period of 12 months. 17 weed species were found, distributed within 9 different botanical families, being: Asteraceae, Malvaceae, Poaceae, Amaranthaceae, Cyperaceae, Solanaceae, Commelinaceae, Portulacaceae e Cucurbitaceae. Thus, Planococcus spp. it can stay and complete its cycle in weeds, being a source of inoculum that can contribute to infestations in the reproductive phase of the conilon coffee.

Henosepilachna vigintioctopunctata was recorded on Solanum melongena L. for the first time in cultivated crops areas in Espirito Santo State, southeastern Brazil, in the first semester of 2017. In one-year research, H. vigintioctopunctata was recorded in eight host plants of the families Amaranthaceae and Solanaceae.  These new records represent a high potential  establishment of this pest in Brazil.

The chrysanthemum is one of the main ornamental species in the world. It has great relevance in the market. Aphids are the main pests that affect the chrysanthemum crop and cause various types of damage to this plant. The objective of this study was to evaluate the influence of different cropping systems using photoselective screens on the population density of aphids in cut chrysanthemum. The study was carried out in an experimental area of the Federal Institute of Espírito Santo – Campus Itapina (Brazil) in a randomized complete block design, according to the split-plot scheme over time. The experiment was established in 3 blocks of 12 m in length with plots of 3 m containing different photoselective screens (red, silver, and black) and the control treatment (open field). Repeated evaluations at different times were done at 0, 15, 30, 45, and 60 d. Data were checked for normality and homoscedasticity and submitted to the Tukey’s test (P<0.05) and a non-parametric method of smoothing a dispersion graph with local weight (LOESS regression). Regardless of the color of the photoselective screen, there was a lower incidence of aphids compared to the open field treatment in the chrysanthemum culture with an average reduction of 84%. For the different sampling times, the Tukey test did not show significant differences between the means of aphid incidence in the evaluated period. Black, red, and silver photoselective screens promoted significant reductions in aphid populations in chrysanthemums of the variety Zembla in the environmental conditions of southeastern Brazil.

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Tetranychus urticae is an important phytophagous and cosmopolitan pest, affecting several cultures worldwide, such as papaya, strawberry, cotton, beans and soybeans. Chemical pesticides for mite control pollute the environment, poison humans and select resistant mite populations. Ricinus communis cake is a by-product of biodiesel production, containing compounds, such as ricinin and some fatty acids, described as toxic to arthropods. The objective of this work was to evaluate the castor bean cake acaricide potential on the spider mite, T. urticae. Ricinus communis dried seeds were pressed for oil extraction. Subsequently, the cake obtained after the oil extraction was ground in a knife mill to produce a fine powder. After, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 grams of castor bean cake powder were mixed into 100 mL of Tween 80 aqueous solution 0.05 % v v-1, stirred (30 minutes, at 25 °C) and left to rest (20 minutes) to decant the solid particles. Finally, the supernatant (castor cake extract) was separated from the solid part by simple filtration. For direct application, 6 mL of castor cake extract were sprayed onto 10 T. urticae females dispersed on a 4 cm diameter Canavalia ensiformis leaf. For indirect application, 10 T. urticae females were placed in discs leaf, previously immersed in castor bean extract. Ten replicates were used for each treatment, evaluating the mortality parameter as a time function (24, 48 and 72 hours) for both application forms. The obtained data were submitted to linear regression analysis. T. urticae mortality did not show a dose-dependent behavior as a function of the castor bean cake extract concentrations for both forms of application (direct and indirect). Castor bean cake extract at 2.5 % w v-1 caused the highest mortality T. urticae females treated directly or indirectly (95 or 88 %, respectively) than this extract in the other evaluated concentrations. The average mortality of T. urticae females treated directly or indirectly with this extract at the different concentrations evaluated were 88.4 and 77.7 %, respectively. The results showed that the castor bean cake extract, applied directly or indirectly in T. urticae, caused high mortality of females of this mite, being a promising alternative for the spider mite sustainable management.

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