Level Of Economic Damage Research Articles

Incidência de tripes (<i>Thrips tabaci</i>) em populações superadensadas de cebola submetidas a doses de nitrogênio e seu efeito na biomassa dos bulbos

The study aimed to verify the incidence of thrips in higher population densities subjected to doses of nitrogen and its possible effects on the biomass production of onion bulbs. The treatments were four plant densities (400, 600, 800 thousand plants ha-1 and 1 million plants ha-1) subjected to two doses of nitrogen (150 and 200 kg N ha-1). The higher temperatures in the initial development and the absence of rain from the end of August to the end of September lead to an early incidence of thrips above the level of economic damage. The incidence of thrips is reduced linearly with increasing plant density, not being influenced by doses of up to 200 kg N ha-1. The use of nitrogen doses above 150 kg N ha-1, even in populations of one million plants per hectare, does not increase the biomass of onion bulbs. Population densities above 600 thousand plants ha-1 reduce the fresh and dry biomass of onion bulbs.

Validation of the chemical control for coffee leaf rust in the susceptible variety Caturra in the south of the department of Huila.

CLR (Hemileia vastatrix) is the disease with the greatest economic and social impact on coffee production in the world, causing losses of up to 50% of productivity in susceptible varieties without proper and timely management. The department of Huila is the current largest producer with approximately 19% of production, going from 136,000 ha planted in 2012 with 61% in susceptible varieties, to about 150,000 ha in 2020 and 30% in susceptible varieties, mainly in the southern area of ??the department, indicating the advancement of the department's coffee sector. However, there is still an important area under threat from coffee rust, which must be controlled and reduced. The objective of this work was to validate the chemical management strategy for rust in commercial crops of the susceptible variety Caturra in the south of the department of Huila (Colombia). The evaluation was carried out in two commercial crops of var. Caturra at two altitudes at 1.410 and 1.280 m, where each batch was divided into three plots to monitor the blooms and the percentage of incidence of the disease from 2016 to 2018. The validation criteria consisted of: fixed calendars (CC1), adjustment of the main flowering (CC2), farmer (CA3), and finally without disease control (SC4). The incidence in critical periods was above 30% of the level of economic damage, directly accompanying the physiology of production. The criteria (CC1-CC2) and with the use of the recommended fungicide showed a lower incidence (AUDPC) compared to the other criteria evaluated, presenting a positive effect on the control of the disease, allowing a retention of foliage and delaying the curve of the disease reducing to 30% the incidence in critical periods. In addition, the risk of Colombian coffee growing has increased in recent years, especially due to the climatic variability that generates advances or delays in the peaks of the disease and generating reductions in the incubation periods.

Impact Assessment of Fall armyworm (<em>Spodoptera frugiperda</em> J.E. Smith) Damage and Control on Smallholder Maize Fields of Anuradhapura District, Sri Lanka

Purpose: Limited information is available on Fall Armyworm (FAW) and its agricultural burden in Sri Lanka. This is the first study conducted aimed at evaluating the level of economic damage caused by FAW in maize fields in the Anuradhapura district during the Maha season 2019-2020, along with the economic impacts on small-scale farmers.Research Method: Five small-scale maize farming sites were selected, along with another maize-cultivated area as the control site. General farming practices were allowed and observed in the sampling sites, while the maize-cultivation at the control site was not treated with any pest management practices. A total of 150 maize plants were monitored. The percentage of damage was calculated for each study site, and the expenditures from the land preparation to harvesting were recorded, along with the final yield. Findings: The highest percentage of mean FAW- damaged plants was reported during the fifth week as 28.5% in farmer fields, while the control site reported a >80% rate of damaged plants. The average dry yield received from the investigated sites was 1,162.2 kg/acre and the average income was Rs. 75,543, along with an average profit of Rs. 31,051 per acre. Meanwhile, the control plots yielded only 224.8 kg of maize/acre. Research Limitation: Collecting information from farmer’s side and unexpected attacks from elephants on the selected corn fields has been the biggest challenge. Originality/value: The study highlights the need for sustainable Integrated Pest Management (IPM) options, along with due attention to biological control methods in controlling FAW.

Efficiency of Using Herbicides in the Weed Control in Vineyards

The article examines the impact of the use of herbicides alternately with agrotechnical measures on the economic indicators of the grape harvest in integrated weed control, designed to keep their spread below the level of economic damage. The effects of herbicides used to control weeds were analyzed by variant. The species composition of weeds in the vineyards was determined, the correct selection of herbicides and chemical control were carried out alternately with agrotechnical measures, strictly observing the rules for the use of herbicides. Timely chemical control led to a reduction in harmful weeds until the end of the season. As a result of reduced environmental risk, the economic performance of grape production also increased significantly with increasing yields. Compared to the control, the yield in all variants was 12.38-18.27%, the profitability was higher in the range of 8.21-28.6%. Thus, it has been established that the use of herbicides in grape crops infected with annual and perennial weeds is cost-effective and allows for additional income.

Influence of exogenous risk-inducing factors on the incidence of intestinal infections in the population of the territory of intensive tourism

Introduction. The development of tourism in regions with an insufficient level of social infrastructure and a low self-cleaning capacity of the environment poses a danger due to the gain in infectious diseases. The level of water in Lake Baikal may determine the potential for dilution of chemical and microbiological contaminants in the coastal zone.
 Materials and methods. The incidence of acute intestinal infections (AII) was studied in the area located on the south-eastern shore of the lake. Baikal (2016–2022). There were assessed risk-inducing factors including climate, water level of the lake, number of tourists, water quality. The values of relative risk, etiological share, economic damage were calculated. 
 Results. The incidence was 630.8 (455.9–781.9) in 0–14 years children, 16.0 (4.8–48.5) cases per 100 thousand population in people over 15 years old. The relative risk in children in the year of low water content of the lake. Baikal RR=1.498 (CI 1.067–2.102). The total level of economic damage caused by additional cases of rotavirus infection in children amounted to 4,528.960 of rubles with high water content, and 5,625.740 of rubles with low water content. 
 Limitations of the study relate to the inability to accurately estimate the number of tourists visiting the region; the inflation rate is not taken into account when calculating the economic damage. 
 Conclusion. The AII incidence in the children’s population of the coastal region is characterized by an increase in the years of water content in Lake Baikal, which differs from the optimal level, with changes in risk-inducing factors.

Optimal climate policy under tipping risk and temporal risk aversion

We investigate the implications of absolute risk aversion with respect to intertemporal utility, i.e. temporal risk aversion, in the presence of a stylized climate tipping risk affecting productivity irreversibly. Optimal climate policy is more stringent under temporal risk aversion, in order to reduce all present and future probabilities of crossing the tipping point and avoid a situation where all generations are badly off. Temporal risk aversion implies a 30% increase in the social cost of carbon (SCC) under our benchmark calibration and for a 10% irreversible increase in the level of economic damage from climate change. The optimal SCC under temporal risk aversion increases sharply with the level of damage brought by a potential tipping point.

A single point mutation in the Bemisia tabaci cytochrome-P450 CYP6CM1 causes enhanced resistance to neonicotinoids

The tobacco whitefly, Bemisia tabaci, is a polyphagous crop pest which causes high levels of economic damage across the globe. Insecticides are often required for the effective control of this species, among which the neonicotinoid class have been particularly widely used. Deciphering the mechanisms responsible for resistance to these chemicals is therefore critical to maintain control of B. tabaci and limit the damage it causes. An important mechanism of resistance to neonicotinoids in B. tabaci is the overexpression of the cytochrome P450 gene CYP6CM1 which leads to the enhanced detoxification of several neonicotinoids. In this study we show that qualitative changes in this P450 dramatically alter its metabolic capacity to detoxify neonicotinoids. CYP6CM1 was significantly over-expressed in two strains of B. tabaci which displayed differing levels of resistance to the neonicotinoids imidacloprid and thiamethoxam. Sequencing of the CYP6CM1 coding sequence from these strains revealed four different alleles encoding isoforms carrying several amino acid changes. Expression of these alleles in vitro and in vivo provided compelling evidence that a mutation (A387G), present in two of the CYP6CM1 alleles, results in enhanced resistance to several neonicotinoids. These data demonstrate the importance of both qualitative and quantitative changes in genes encoding detoxification enzymes in the evolution of insecticide resistance and have applied implications for resistance monitoring programs.

Competitive response and level of economic damage of quinoa in the presence of alexandergrass

The study of interference and the economic damage level (EDL) of weeds in crops allows more rational management measures to be adopted. Given this, it was the aim of this study to determine the competitive ability and EDL of quinoa genotypes in the presence of alexandergrass. Treatments consisted of three quinoa genotypes (Q 1303, Q 1331, and Q 1324), which competed with 12 alexandergrass densities: 0, 16, 36, 40, 44, 52, 60, 84, 280, 532, and 1,036; 0, 8, 28, 32, 48, 52, 60, 72, 84, 820, and 988; and, 0, 8, 36, 44, 48, 60, 68, 80, 84, 120, 756, and 848 plants m-2, respectively. Alexandergrass plants were evaluated for plant density (PD), ground cover (GC), leaf area (LA), and aerial dry mass (ADM). In quinoa, grain yield, control cost, selling price, and control efficiency were determined. The quinoa genotype Q 1331 shows greater competitive ability when compared to Q 1303 and Q 1324. EDL values varied from 1.81 to 11.74 plants m-2 for genotype Q 1331, which was more competitive in the presence of alexandergrass. The lowest EDL values ranged from 1.21 to 8.12 plants m-2, for the genotypes Q 1303 and Q 1324, which have the lowest competitiveness with the competitor.

Agrobacterium rhizogenes-Mediated Transformation of Crotalaria ochroleuca: Production of Flavonoids from Hairy Roots

Crotalaria ochroleuca (Fabaceae) is rich in bioactive compounds used for nematode control. Transformed root culture allows the production of a large amount of hairy root biomass, conditioned by auxin biosynthesis-related genes integrated via the process of Agrobacterium rhizogenes infection, which is known to cause a hairy root phenotype. We transformed A. rhizogenes to increase the biomass of hairy roots and optimized the process of production of bioactive compounds. The transformed nature of hairy roots was confirmed by polymerase chain reaction, which confers kanamycin resistance. The transformed roots were cultured in full-strength in liquid media to realize the growth of hairy roots and the production of bioactive compounds. The transformed roots were grown in a culture medium supplemented with elicitors to produce total phenols, and flavonoids. Chromatographic analysis of transformed roots revealed the presence of flavonoids apigenin-6,8-C-diglucoside and luteolin-6-C-glucoside. The results were obtained by conducting physiological and biochemical studies with the flavonoids and studying the pathways that led to the production of large amounts of bioactive compounds from the hairy roots of C. ochroleuca. It was observed that the extraction of the compounds significantly affected nematodes and insect larvae, resulting in significantly high levels of economic damage to crops.

INFLUENCE OF WEED CONTROL AND MICROFERTILIZERS ON VEGETABLE YIELD

The article summarizes the results of research on the structure of weed agrocenosis of vegetable peas; controlling the level of its weeding by performing pre-emergence and post-emergence harrowing with medium toothed harrows; evaluation of the chemical method of protection of vegetable peas from weeds, which involved the introduction of 2 types of herbicides, which contained such active substances as S-metallochlor and Imazamox. Part of the study areas was treated with the microfertilizer Reacoma-chelate of boron + molybdenum with a rate of 1.0 l / ha before flowering peas. As a result of research, it was found that in the structure of weed agrocenosis of vegetable peas the share of monocotyledonous weeds averaged 71.4% in two years of research and, accordingly, dicotyledonous - 28.6%. But the air-dry mass of cereal weeds was much lower than that of deciduous weeds. The implementation of agronomic measures alone did not allow to keep the presence of weeds in crops below the level of economic damage throughout the growing season. Prior to harvesting, this variant accounted for 18 weeds / m2 of weed stalks. This agricultural measure reduced the level of their presence by 69.5% and 45.8% of air-dry weight compared to the control option. The application of a soil herbicide based on S-metallochlorine provided a reduction in the number of weeds in the month after spraying by 85.7% compared to the control version. Before harvesting vegetable peas, the number of weeds in the areas where the soil herbicide was applied was 11 pieces / m2, and the level of weeding decreased by 81.4% compared to the control variant. At the time of the second weed count, we found that the herbicide with the active ingredient Imazamox was 89.8% effective. Consecutive application of S-metallochlor and Imazamox with reduced consumption rates allowed to control the presence of weeds in agrophytocenoses throughout the growing season of vegetable peas. Weed mortality at the time of harvest in this variant averaged 89.8% over two years of research, and their above-ground air-dry mass was 95 g / m2. On average, in two years of our research, the yield of peas in the variants with the application of herbicides was 5.00-5,64 t / ha, which was 35.5-52.8% higher than in the control areas. The highest increase in pea yield was obtained with the successive application of S-metallochlor and Imazamox with reduced consumption rates. On the average for two years of researches it made 1.95 t / hectare. Before flowering of vegetables, the application of micro-fertilizer Reacom-chelate of boron + molybdenum with a consumption rate of 1.0 l / ha made it possible to obtain higher yields of 3.7-6.1% compared to uncultivated areas on agronomic and chemical weed protection options.

The Influence of Planting Periods on Herbivore and Natural Enemy Abundance on Yellow Sticky Traps in Bt Maize Fields.

Simple SummaryPrevious research has shown that both landscape and field variables significantly influence the abundance of herbivorous insects and their natural enemies in Bt maize; however, crop phenology was found to have the strongest effects. Therefore, here, we studied how the planting period affected the insect dynamics in Bt maize. Our data provide clear evidence that the abundance of herbivores and natural enemies peaks in earlier growth stages and that their abundance varied between maize phenology stages, but interestingly, it did not show a strong effect when the planting period changed.Knowledge of the insect densities during crop development is necessary for adopting appropriate measures for the control of insect pests and minimizing yield losses. Within integrated pest management programs, crop rotation has been carried out in recent years, but this current trend delays the planting period for Bt maize. The small amount of available information regarding the influence of sowing Bt maize early or late on the seasonal abundance of herbivores prompted us to study these aspects in two current common planting periods in northeastern Spain in 52 maize fields over three consecutive years. We sampled the fields planted on different dates with sticky yellow traps. Our results show that only the abundances of herbivore thrips, other than Frankliniella occidentalis, and Syrphidae were significantly different between the two planting periods. Moreover, when we performed yearly analyses, we found significant effects of the planting period on Coccinellidae and Chrysopidae in 2015 and on Aeolothrips sp. in 2016 and 2017. In most of the taxa, the abundance peaks in earlier growth stages, which is related to pollination (before or during). Only the abundances of Stethorus punctillum and Syrphidae peak later in the season. In addition, F. occidentalis, aphids, Syrphidae, and Coccinellidae registered higher abundance in fields sown in the late planting period. These results highlight the effects of sowing in different planting periods on insect dynamics in Bt maize and can be used to identify the abundance of certain pests and natural enemies in specific phenological stages of maize, which may allow producers to adopt better-integrated management and thus avoid reaching the level of economic damage.

Interference and level of economic damage of turnip in canola

The weeds if not properly controlled have great ability to settle in agricultural systems, affecting crop production. The objective of this work was to determine the interference and level of economic damage in different density of crop. The treatments were composed of canola hybrids (Hyola 50, Hyola 76, Hyola 433, Hyola 571 CL, Hyola 575 CL and Diamond) and twelve infestation turnip density in crop. The variables evaluated to estimate the competitiveness of the hybrids were plant density, leaf area, soil cover and dry mass of the turnip. Grain yield, canola price, herbicide efficiency, and control cost were used to determine the weed's level of economic damage on the crop. The canola hybrids Hyola 575 CL, Hyola 50, Hyola 76 and Hyola 571 CL are more competitive with turnip. The values of economic damage levels range from 2.86 to 5.95, 2.43 to 5.05, 2.22 to 5.43 and 2.99 to 6.22 turnip plants m-2 for hybrids Hyola 50, Hyola 76, Hyola 571 CL and Hyola 575 CL, respectively, as a function of simulated variables. The increased grain yield, canola price, herbicide efficiency and lower control costs reduce the level of economic damage, justifying the adoption of control.

A critical-point yield model to appraise the damage caused to soybean by white-mold

A model to estimate the damage caused by white mold to soybean yield from experimental field data gathered during the summer season of 2009-10 was generated. Six soybean cultivars were grown on six sites of the Cerrados region, resulting in a total of nine separate experiments. The gradient of disease intensity (plant stem incidence) and yield was generated through the application of different fungicides and rates three times over the course of the season. The disease incidence in plant stems was evaluated at the R1, R5.2 and R5.5 growing stages. Manual harvest at the physiological ripening stage was followed by grain drying, threshing, and cleaning. Finally, grain yield was estimated in kg/ha, and regression analysis was performed. Nine linear equations representing the damage function were generated. The mean damage function was y = - 6.7 x + 1,000, where y represents grain yield normalized to 1,000 kg/ha and x represents WM incidence in plants. To appraise the damage caused by various disease intensities, these models should first be validated. Damage coefficients may be used to determine the level of economic damage.

The cyst nematode Heteroderalatipons Franklin, 1969 (Nemata: Heteroderidae): hatching behavior and development on wheat in arid and semiarid regions in Turkey

The cyst nematode Heterodera latipons Franklin, 1969 (Nemata: Heteroderidae) is an economically important sedentary plant-parasitic nematode which limits the production of cereal crops around the world. It is an important pest on wheat and can be found globally in different growing areas, especially in the Mediterranean region. Developing an understanding of its physiological behavior (senescence, quiescence, and cryptobiosis), development [second-stage juveniles (J2) and immature and mature females], and population dynamics under field conditions is needed to create an appropriate control strategy. The experiments were conducted at Karaisalı, a semiarid region in Adana Province, and at Derik, an arid region in Mardin Province, during the 2015-2016 and 2016-2017 growing seasons. The results indicated that the emergence of J2 of H. Latipons in the soil rhizosphere occurred from late December to mid-January in the semiarid region, while they were mostly observed through March in both regions when the average temperature was around 10 °C. The white (immature) females were seen between mid-February and mid-March in both experimental seasons in the arid and semiarid regions, and they were mainly observed in April when the temperature was above 15 °C during both seasons in the arid region. The results showed that H. Latipons produces only one generation in each wheat growing season, and the developmental stages of this nematode species are closely related to the ecological and edaphic factors of host plant development. Moreover, the development of J2 and immature females of H. Latipons took longer in the semiarid region than in the arid region owing to plant and root growth and edaphic factors, especially soil temperature and moisture. Understanding the physiological behavior and biological stages of this nematode will be useful for developing nematode control strategies to keep H. Latipons populations below economic damage levels.

Behavioral aspects of Sphenophorus levis (Coleoptera: Curculionidae), damage to sugarcane and its natural infection by Steinernema carpocapsae (Nematoda: Rhabditidae)

In Brazil, the sugarcane billbug Sphenophorus levis (Coleoptera: Curculionidae) bores sugarcane rhizomes in its larval stage, causing high losses to the crop. Entomopathogenic nematodes (EPNs) of the genera Heterorhabditis and Steinernema (Nematoda: Rhabditidae) could be applied in the sugarcane fields to control the larvae and pupae of S. levis inside rhizomes. However, it is not clear whether this insect leaves an opening in the rhizome that would allow EPNs to enter and reach the insects in their immature stages. In addition, there is still no record of the natural occurrence of EPNs in the immature stages of S. levis or on the losses this insect can cause to sugarcane crops. This work aimed to investigate aspects of S. levis behavior on sugarcane plants and to determine the cane damage and crop loss percentage it causes through observations and regular evaluations of plants in the field; as well as to assess the natural occurrence of EPNs in the insect population found inside the cane rhizomes. For every 1% increase in its damage to the rhizomes, S. levis caused a 1% loss in the cane crop due to reductions of 0.318% in the weight of the stems and of 0.68% in the number of shoots generated by the rhizomes. The insect leaves openings that link the tunnels inside the root to the outside; these openings are made by adults during oviposition or by last-instar larva to allow the adults to exit. Almost 90% of the openings were made below the ground, allowing EPNs to enter the tunnels to reach the insect life stages inside the root. Steinernema carpocapsae was found to cause natural infection in S. levis inside the root, providing up to 60% pupal mortality. This information may help to establish the level of economic damage caused by S. levis and highlights EPNs as a potential alternative for S. levis control; their application just after cane harvesting is suggested in order to reduce the S. levis population in the next plant generation.

𝘚𝘱𝘰𝘥𝘰𝘱𝘵𝘦𝘳𝘢 𝘧𝘳𝘶𝘨𝘪𝘱𝘦𝘳𝘥𝘢 (J. E. SMITH, 1797) (LEPIDOPTERA: NOCTUIDAE) CONTROL AND PRODUCTIVE PERFORMANCE OF BT MAIZE GENOTYPES

The purpose of this work was to evaluate the yield performance of Bt maize hybrids under field conditions with damage of the Spodoptera frugiperda in a completely randomized blocks design, under a factorial scheme, with four replications. Six treatments (five Bt maize hybrids and one non-Bt hybrid) were evaluated, with and without control of the S. frugiperda. In the evaluations of number of larvae and average damage scores on maize plants there was a lower incidence and lower damage of larvae on the genotypes containing Leptra® and Viptera 3® technologies and for the productive parameters there was no significant difference between the studied genotypes, even with and without chemical control of the pest. It was concluded that there are genotypes of corn resistant to S. frugiperda, however, there was no significant difference in the yield performance of the different hybrids when comparing the difference between lack of control and chemical control in the infestation conditions found in this study. This suggests that the levels of economic damage of S. frugiperda on corn crop are higher than the levels of infestation occurred in the study.

Estimating the economic damage and treatment cost of basal stem rot striking the Malaysian oil palms

Oil palm, a vital crop, contributes significantly to the economic and social development of Malaysia. However, a pathogen such as the Basal Stem Rot (BSR) poses a significant threat to the oil palm that would lead to significant economic losses. Motivated by this development, we utilize a partial equilibrium model of Malaysian agriculture to measure the level of economic damage in terms of real agricultural output, agricultural prices, and agricultural employment. As expected, a slow-moving Ganoderma boninense can devastate the oil palms in Malaysia by 2040 with a loss of 860,610 ha of mature oil palms that result in significant losses of real agricultural output and employment while inducing higher agricultural prices. Furthermore, BSR leads to further deforestation as landowners replace the BSR infected land by clearing rainforest. At last, paying an annual treatment cost to maintain healthy oil palms lead to a partial recovery from the economic damage of BSR. Although real output, agricultural prices, and agricultural employment improve while deforestation slows, the economic measures do not return to their baseline levels with an absence of BSR.

Interference and Level of Economic Damage of Alexandergrass on Corn

ABSTRACT: The objective of this work was to evaluate the interference and to determine the level of economic damage (NDE) of the weed when infesting the corn crop. Treatments were composed by corn densities (2.60, 3.10, 3.65, 4.00 and 4.80 plants m-1) and 10 Alexandergrass populations for each crop seeding density. The population of plants, leaf area, soil cover and shoot dry mass of Alexandergrass were evaluated as indicator of infestation. Shoot dry mass of Alexandergrass presents better adjustment to the model of rectangular hyperbole, and losses of grain yield due to interference of the weed were satisfactorily estimated by this model. Corn sowing densities of 2.60; 3.10 and 3.65 plants m-1 in average, were more competitive of all evaluated variables in the presence of Alexandergrass. Corn densities of 2.60; 3.10 and 3.65 plants m-1 increase the level of economic damage, justifying the adoption of control measures of Alexandergrass when in higher populations. NDE values ranged from 1.58 to 9.37 plants m-2 at the densities of 4.00 and 4.80 maize plants m-1, which were less competitive with Alexandergrass.

Technical and economic efficiency of methods for extracting genomic DNA from Meloidogyne javanica

Plant parasitic nematodes reduce the production of agricultural crops. Species diagnosis is essential to predict losses, determine economic damage levels and develop integrated pest management programs. DNA extraction techniques need to be improved for precise and rapid molecular diagnosis of nematodes. The objective of the present study was to evaluate the efficiency of DNA extraction and amplification by PCR, cost and execution time by Chelex, Worm Lysis Buffer Method (WLB), Holterman Lysis Buffer Method (HLB) and FastDNA methods for nematodes of the Meloidogyne genus. The qualitative and quantitative efficiency of DNA extraction varied between methods. The band size of the amplified PCR product with WLB, Chelex and HLB methods was 590 bp. Extraction with the FastDNA is not recommended for DNA extraction from nematodes because it results in a low DNA concentration without bands in PCR amplification, besides presenting high cost. The efficiency of the WLB method to extracting DNA from Meloidogyne javanica was greater, ensuring a higher concentration and purity of the extracted material and guaranteeing lower costs and greater ease of PCR amplification.

An Identification key to the species of Auchenorrhyncha of Iranian fauna recorded as pests in orchards and a review on the pest status of the species

An illustrated dichotomous identification key for a total of 54 Auchenorrhyncha species of Iran is presented. The studied species have been recorded as pests and vectors of diseases to fruit trees. Twenty nine records were contributed to Iranian orchards and 25 of which were from other parts of the world. Hence, the latter group can be considered as potential pests and vectors in Iran. Reviewing the published information on the former group suggests 12 species as pests (4, 2 and 6 species with significant, minor, and unknown recorded economic damage levels, respectively). The pest status of 14 recorded pest species were quite doubtful and 3 of them could not be present in Iran due to the lack of evidence or their limited distribution in other parts of the world. The 4 species which were recognized as well known and significantly important pests belonged to the families: Tropiduchidae (Ommatissus lybicusBergevin, 1930), Cicadidae (Cicadatra alhageos (Kolenati, 1857)), and Cicadellidae (Hishimonus phycitis (Distant, 1908) and Neoaliturus haematoceps (Mulstant et Rey, 1855)). One species Orosanga japonicus is recording for the first time from Iran and added to the key.