Insect Pest Complex Research Articles

Have native insect pests associated with a native crop in Maine declined over the past three to five decades?

Abstract Lowbush blueberry is an important berry crop in Maine (USA), Quebec and the Maritime provinces of Canada. The other economically important crops in Maine are potato, dairy and organic mixed vegetable produce. Lowbush blueberry is a complex of 1–4 Vaccinium species, primarily dominated by Vaccinium angustifolium Aiton. All but one of the insect pest species in this crop system are native to the regions where it is managed in North America. Insect decline has been shown to be a recent global phenomenon although it has rarely been studied in agricultural ecosystems. Long‐term datasets of insect species abundances are a powerful tool for insect population trends. To determine if native insect pests have declined over the past several decades in Maine lowbush blueberry, we surveyed three native species. All surveys were conducted in commercial blueberry fields; although, none of the sample sites were sprayed with insecticides. Insect pest sampling comprised two surveys (1961–2014 and 1998–2017) conducted on the larval stage of the blueberry maggot fly (Rhagoletis mendax Curran), one survey (1981–2016) on the larval stage of the blueberry spanworm (Itame argillacearia (Packard)), and one survey (1983–2019) on the larval stage of the blueberry flea beetle (Altica sylvia Malloch). Based upon the analysis of our long‐term population‐level datasets, we found no evidence that insect decline has occurred in this native blueberry insect pest complex intimately associated with the lowbush blueberry, a native crop plant in North America, despite recent documentation of rapid climate change occurring in the lowbush blueberry production areas.

Population Dynamics and Environmental Correlates of Insect Pests in Watermelon, Citrullus lanatus (T.)

The study was conducted in Kandavara village, Chikkaballapur district, during 2021, investigated the insect pest complex affecting watermelon, Citrullus lanatus (T) following standard crop management practices but without any insecticidal interventions to assess the natural occurrence of insect pests. Weekly observations were made from February to April (2021) employing various sampling methods to monitor key pests, including leaf miners, thrips, whiteflies, fruit flies, leaf-eating caterpillars, and pumpkin beetles. The study revealed that leaf miners, Liriomyza trifolii (Frick) were the first to appear, peaking in the 11th Standard Meteorological Week (SMW) with 6.45 leaf mines per five leaves. Thrips, Thrips palmi Karny and whiteflies, Bemisia tabaci (Gennadius) emerged during the vegetative stage, showing a significant positive correlation with maximum temperature. Fruit flies, Zeugodacus cucurbitae (Coquillett) caused the most significant damage during the fruiting stage, with a peak incidence of 14.92 per cent in the 15th SMW. The study highlighted that higher temperature had a positive correlation with pest populations, while rainfall had a negative correlation reducing the pest activity. These findings emphasize the importance of precise timing in pest management interventions to minimize crop losses and enhance the sustainability and productivity of watermelon cultivation in India.

Complexities in the Implementation and Maintenance of Integrated Pest Management in Potato.

Integrated pest management (IPM) is an educated and systematic effort to use multiple control techniques to reduce pest damage to economically acceptable levels while minimizing negative environmental impacts. Although its benefits are widely acknowledged, IPM is not universally practiced by farmers. Potato farming, which produces one of the most important staple crops in the world, provides a good illustration of the issues surrounding IPM adoption. Potatoes are attacked by a complex of insect pests that can inflict catastrophic crop losses. Potato production has gone through the processes of consolidation and intensification, which are linked to increased pest problems, particularly selection for insecticide-resistant pest populations. While use of insecticides remains the most common method of pest control in potatoes, other techniques, including crop rotation and natural enemies, are also available. In addition, there are effective monitoring techniques for many potato pests. However, reliable economic thresholds are often lacking. Potato ecosystems are complex and diverse; therefore, the knowledge necessary for developing ecologically based pest management is not easily obtained or transferable. Furthermore, potato systems change with the arrival of new pest species and the evolution of existing pests. Modern technological advances, such as remote sensing and molecular biotechnology, are likely to improve potato IPM. However, these tools are not going to solve all problems. IPM is not just about integrating different techniques; it is also about integrating the efforts and concerns of all stakeholders. The collaboration of farmers and scientists in agricultural research is needed to foster the development of IPM systems that are appropriate for grower implementation and thus more likely to be adopted. Additional emphasis also needs to be placed on the fact that not only does IPM decrease degradation of the environment, but it also improves the economic well-being of its practitioners.

Field Evaluation of Biological and Conventional Insecticides for Managing Multiple Insect Pests in Cotton

Abstract Cotton, Gossypium hirsutum (L.), is an economically important crop in the United States that is plagued by a complex of insect pests. Two key pests of cotton in the midsouthern United States are the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois) (Hemiptera: Miridae), and bollworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae). A suite of highly effective synthetic insecticides is typically used for control of these pests. However, it is unclear how the combined management of these two insect pests with biological insecticides impacts the economics of cotton production. To address this shortcoming, we conducted a field experiment in the Mississippi Delta over 2 yr to study the effects of synthetic and biological insecticides for control of the tarnished plant bug and bollworm on cotton yield. The results indicated the control of tarnished plant bug with synthetic insecticides had the most significant impact on cotton yield and net returns. The conventional tarnished plant bug treatment also significantly increased bollworm density and damage, but these increases did not significantly alter yield or net return in non–Bacillus thuringiensis (Bt) or Bt cottons. The economic benefit of a conventional approach to tarnished plant bug control with synthetic insecticides was US$438.07/ha in non-Bt and $700.88/ha in Bt cotton relative to those treated with a biological insecticide. The biological insecticides used for this study were ineffective at significantly altering yield or net return. However, for insect management in cotton to be sustainable, alternatives must be found to complement conventional synthetic insecticides.

Insect Pest Complex of Field Pea Crop

A study on diverse insect pest complex of field pea was made in both the years of experimentation i.e. during Rabi, 2021-22 and 2022-23 at Crop Research Centre, College of Agriculture, SVPUA&T, Meerut. As many as 15 insect species were recorded during the study period which belongs to different orders viz. Orthoptera (one species), Hemiptera (four species), Lepidoptera (seven species), Isoptera (one species) and Diptera (two species). All the major parts of this legume plant viz., pod/seed, leaf, root and stem were found to be infested by the insect pests. Sucking insect pests appear during the seedling and vegetative stage of crop i.e. 1st week of December to 2nd week of January. Gram pod borer, pea pod borer and blue butterfly are the pod borer complex that appeared from flowering to maturity stage i.e. 1st week of January to 2nd week of February. Among all the fifteen insect pests, only two pod borers, Etiella zinckenella (Treitschke) and Helicoverpa armigera (Hübner) were found as major pests of field pea with severe economic status to this area during successive Rabi, seasons.

Exploring the Hidden Threats: A Comprehensive Study on Incidence and Insect Pest Diversity on Button Mushroom (Agaricus bisporus) in Kashmir, India

In recent years, mushroom farming has gained popularity across the globe as the enterprise assists in transforming agricultural wastes into highly healthy nutritional foods. However, mushrooms are affected adversely by a large number of biotic and abiotic agents. Among the biotic agents, fungi, bacteria, viruses, nematodes, insects and mites cause damage to mushrooms directly or indirectly posing serious threats to their cultivation. Kashmir valley is one of the most promising regions for the cultivation of mushrooms, therefore, a study was carried out to document the insect pest complex infesting button mushroom and to quantify the pest incidence at different locations (SKUAST-K, Shalimar, Budgam, Baramulla and Pulwama) of the Kashmir valley. The study revealed that various insect pests viz., sciarid fly (Lycoriella castanescens), picture winged fly (Physiphora sericea), springtail (Achorutes armatus), mould mite (Tyrophagus putrescentiae) and flour mite (Acarus siro) were found infesting button mushroom in different months of the year. Further, the study also witnessed the overall incidence of different pests was highest (75 per cent) at Budgam, followed by an incidence of 70 per cent at Baramulla, 68 per cent at Pulwama, while the lowest incidence of 63.80 per cent at SKUAST-K, Shalimar; besides, the pest incidence was maximum in the months of July and August with highest and lowest incidence of sciarid flies and mites, respectively.

First report of flour beetle, Tribolium confusum, as a borer on tree beans and some new records of arthropod insects comprising insect pest complex of tree bean

First report of flour beetle, Tribolium confusum, as a borer on tree beans and some new records of arthropod insects comprising insect pest complex of tree bean

Inheritance of Plant Characters Related to Insect Pest Complex in Cotton (Gssypium hirsutum L.)

Inheritance of Plant Characters Related to Insect Pest Complex in Cotton (Gssypium hirsutum L.)

Prevalence of insect pests on maize crop in District Mansehra, Khyber Pakhtunkhwa, Pakistan.

The maize crop is used as food for humans, livestock and poultries forms, it is also used in bread making, corn flakes, corn syrup, corn starch and corn oils. The field study consisted of one experimental trial, about the incidence of that insect pest complex on maize cultivar Azam during the Kharif season 2020 at the Agricultural, Research Station, Baffa, Mansehra. The trial was laid out in the Randomized Complete Block Design (RCBD), and then it was divided into three replications. The result obtained from the trial showed that a number of the pest species were recorded during the experimental period; however, the population was noticed at a low level. The obtained insect species were corn leaf aphid (6.90 ± 5.5) per square inch, corn leafhopper (1.32 ± 0.63), maize stem borer (0.63 ± 0.29), corn flea beetle (0.43 ± 0.28), Thrips (0.38 ± 0.22), Hairy caterpillar (0.21 ± 0.22), Grasshopper (0.17 ± 0.11) and shoot fly (0.11 ± 0.08) throughout the season.

Screening of biopesticides and their combinations against sucking insect pest complex in Bt cotton

Screening of biopesticides and their combinations against sucking insect pest complex in Bt cotton

Farmer perception, knowledge and management of the scale insect pest complex infesting crops and trees in Coastal Kenya

Scale insects and mealybugs (Hemiptera: Sternorrhyncha: Coccomorpha) are serious plant sap-sucking pests affecting a wide range of cultivated crops and tree species. The insects are highly diverse and can have devastating effects on yields due to lack of farmer awareness and inappropriate management practices. Recent alien mealybug invasions in Kenya include among others, papaya mealybug (Paracoccus marginatus), a highly invasive pest that is spreading quickly. Farmer experience with diverse crop pests can support development of a successful pest management strategy and contribute to reduced impacts on both crop yields and agro-biodiversity. This socio-economic survey was carried out in three coastal counties of Kenya (Mombasa, Kilifi and Kwale) to establish the impact of scale insect and mealybug pests on farmer livelihoods and to document the perception, knowledge and management practices used by smallholder farmers. Data from oral interviews using ODK were administered to respondents and analysed using Excel and GENSTAT. It emerged that 26% of the respondents were familiar with scale insects and 51% with mealybugs, respectively. Of these, 78.13 % and 94% acknowledged having encountered scale insects and mealybugs, respectively, on their farms. The farmers confirmed that scale insect pests affected a high diversity of crops and trees. About 56% of the respondents used pesticides to control the pests while 25% did not apply any management strategy. The remaining 19% practiced cultural control methods such as field sanitation and intercropping with less susceptible crops. Pesticides were reported to be moderately effective (41-70%) at controlling scale insects and mealybugs. Other management options reported by farmers included farm hygiene, the use of high-pressure water jets, and applications of ash and bio-pesticides such as home-made neem extract. Based on the findings, it is recommended that capacity building for farmers and input providers be undertaken to enhance the knowledge of scale insect and mealybug pest biology, symptoms of crop and tree attack, host ranges and management practices. Additonally, training on the use of low-risk pest control products and innovative control methods should be undertaken to reduce the impact of the pest on crop production and agro-biodiversity. Keywords: Farmer knowledge, management, mealybugs, scale insects and socio-economic survey.

Study on the Insect Pest-complex and Its Correlations with Environmental Factors on Fenugreek (Trigonella Foenum Graecum L.)

The present investigation was carried out during November 2022 to February 2023. The field experiment was conducted in Randomized block design with eight treatments and three replications at Experimental farm, Department of Entomology, SAS, Medziphema. The outcomes of the experiments revealed that, during period of investigation, ten insect pests and two natural enemies were observed. The activity of aphid (Aphis craccivora) infestation on fenugreek started in the 45th SMW (1.5 aphids/ three leaves) and reached its peak during 52nd SMW (23.36 aphids/ three leaves). The thrips (Scirtothrips dorsalis) was observed from 46th SMW (0.8 thrips/ three leaves) and reached its peak during 2nd SMW (9.32 thrips/ three leaves). The population of Spodoptera litura on fenugreek started appearing from 47th SMW (0.1caterpilar/ plant) and the highest incidence was recorded during 1st SMW (2 caterpillar/ plant). The serpentine leaf miner was observed from 49th SMW (0.56 maggot/ plant) and reached its peak during 2nd SMW (2.3 maggot/ plant). The population of flea beetle on fenugreek started appearing from 48th SMW (0.8 adult/ plant) and the highest incidence was recorded during 1st SMW (2.03 adult/ plant). The correlation studies with weather parameters revealed that aphid, thrips, Spodoptera litura, serpentine leaf miner and flea beetle population had significant negative correlation with maximum temperature, minimum temperature but non-significant with other remaining weather parameters.

Efficacy of Various Eco-Friendly Pesticides on Insect Pest Complex of Chilli (Capsicum annum L.)

The population of insect pest complex on chilli and its damage upon the plant was monitored upon treatment with formulated Beauveria bassiania (0.5 ml Lˉ¹), tobacco leaf extract (5 ml Lˉ¹), neem oil (5 ml Lˉ¹) and ginger garlic paste (50 g Lˉ¹) by giving two sprays. The experiment was conducted at the experimental farm, New Colony, Ward 7, Chumukedima, Nagaland beginning from February 2021 to May 2021. The experiment was laid out in Randomized Block Design with four treatments and one control. A total of nine insect pests under seven orders and ten families were observed. The incidence of aphids, whitefly, thrips and fruit borer were major pests while others were non-significant. The results revealed that all biopesticides under study were superior and there was significant reduction over control against the insect pest complex of chilli. The most effective control was recorded in neem oil against aphids, whitefly, thrips and fruit borer with mean per cent reduction of 56.08%, 61.76%, 53.09% and 57.37%, respectively while the least was recorded in the treatment done with tobacco leaf extract.

The insect pests of coffee and their management practices in the main coffee growing region in Kenya

Coffee farming in Kenya is a major source of income for over 800,000 farmers. Globally, the Kenyan coffee is renowned for its high quality. Most of the Kenyan coffee is produced in the Mt. Kenya region. Its production faces many challenges that include infestation by a complex of insect pests. A field survey covering eight (8) main coffee-growing counties and 485 households in the Mt. Kenya region was conducted in May 2022. The survey aimed to establish the key insect pests in the region, and their distribution and management practices applied by the farmers. The survey established eight (8) insect pests as of major importance in the region. These included the Coffee Berry Borer (Hypothenemus hampei), Thrips (Diarthrothrips coffeae), Leaf miners (Leucoptera spp), Yellow Headed Borer (Dirphya nigricornis), White Borer (Anthores leuconotus), Green scales (Coccus alpinus), Kenya Meallybugs (Planococcus kenyae) and Antestia bugs (Antestiopsis spp). Their occurrence ranged from 5 to 66%. The C. alpinus (66%) occurred in all the surveyed counties, Agro-Ecological Zones (AEZs) and coffee farms’ households. The D. nigricornis (57%) was the second most common insect pest. The C. alpinus, D. nigricornis, Leucoptera spp and H. hampei dominated the “Lower” coffee zone and were less dominant in Upper Midland 1(UM 1). Farmers used insecticides, plant extracts, and physical, mechanical, cultural, and field sanitation approaches to control the pests. Insecticides at 79% was the most widespread practice used by coffee farmers. This study and its findings are key to Agricultural extension services in providing focused technical advisory services to coffee farmers based on specific insect pests per the Agro-Ecological Zones from the Mt Kenya region. Keywords: Agro-ecological zones, insect pests, infestation, management practices.

Insect Pest Complex on Cauliflower (Brassica oleracea var botrytis L.) and their Correlation with Weather Parameters in Medziphema, Nagaland

Field experiment was conducted to study the insect pest complex and their incidence on cauliflower during rabi season of 2021-2022 in the Entomological farm, SASRD, Medziphema, Nagaland. Fourteen insect pests were found to attack the crop at different stages of crop growth. Out of these, Green peach aphid, Myzus persicae and Cabbage butterfly, Pieris spp. were considered as major insect pests of cauliflower. The peak population of Green peach aphid (8.74 aphids/leaf) and Cabbage butterfly (4.10 larva /plant) was observed on 17th December and 12th February, respectively. The population of Myzus persicae showed a non-significant negative relation with maximum (r = -0.320) and minimum (r = -0.311) temperature, while positive relation with maximum (r = 0.028) and minimum (r = 0.249) relative humidity as well as rainfall (r = 0.021). The population of Pieris spp. showed a non-significant negative correlation with maximum (r = -0.484) temperature, whereas a significant negative correlation was observed with minimum (r = -0.550) temperature. Correlation of relative humidity with the incidence of Pieris spp. exhibited a non-significant negative correlation with maximum (r = -0.078) and minimum (r = -0.162) relative humidity, while rainfall exhibited a non-significant positive correlation (r = 0.235).

INSECT PESTS OF RICE IN PAKISTAN: A COMPREHENSIVE REVIEW OF BIOLOGY, DAMAGE, AND MANAGEMENT

Rice is one of the most significant food crops in the world. It is predominantly a subsistence crop because half of it is consumed where it is grown. The main insect pests of rice in Pakistan include Stem borers, Plant-hoppers, Leafhoppers, rice grass-hopper, leaf-folder, African pink borers, and many others. There have been noticeable changes in Pakistan’s insect pest complex with the introduction of high-yielding cultivars. Many species that work earlier thought to be minor pests are now regarded as serious pests in Pakistan. In traditional Basmati growing regions, stem borers remain a serious issue. From ancient times, the Pakistani farming community used different management strategies to deal with the insect pests of rice. The management strategies involved are cultural, biological, physical, and chemical. Cultural practices have changed, such as the use of greater fertilizers rates in high-yielding varieties, and the leaf folder complex. Rice growers throughout Pakistan are strongly reliant upon traditional cultural practices. But this tendency has slowly changed towards chemical methods. Chemical pesticides are now used more frequently as a primary method of control in Pakistan. Biological control or the use of living organisms as pest control agents is a common natural process in which insects population in crops are continuously decreased by predators, parasites, and pathogens of the pests. Pakistan now has a problem with insect pests, thus utilizing an integrated pest management (IPM) strategy that is effective, affordable, and safe for the environment. Other techniques for pest control include the use of pheromones as attractants, insect growth regulators, insect growth inhibitors, repellents, and sterile insect release systems.

Comparative Spatial Distribution of Sucking Insect-Pest-Complex in Summer and Monsoon Cowpea [Vigna unguiculata (L.) Walp.

Background: Pulse crops are known as an important dietary source of proteins for a major part of the vegetarian population across the globe; especially in India. Legume crops help restoration of soil fertility through symbiotic nitrogen fixation. Spatial distribution is an important aspect as it interprets the interaction between individuals of the species and their habitat. The biological reason of aggregation is highly unpredictable and it depends on behavioural pattern of the insect; therefore, spatial distribution accounts for informative description of organisms. Methods: In order to study the spatial distribution of sucking pests of cowpea, a field trial was laid out during Zaid and Kharif separately at the Instructional Farm of Rajasthan College of Agriculture, Udaipur in 2019 and 2020. Cowpea variety Pusa Komal was cultivated in 6 plots each of 3 m x 3 m with the row to row and plant to plant spacing of 50 cm and 10 cm, respectively. Different distribution pattern were used to determine spatial distribution pattern of species of insect fauna associated with cowpea during the summer and monsoon season. Result: The spatial distribution for most the insect pest complex was contagious during both the respective seasons. All positive IDM (index of clumping) values confirmed the clumping of the pest during the season. The mean crowding index was more than unity, indicated clumped interaction.

CONTROL OF THE NUMBER OF SUCKING PESTS OF WINTER WHEAT IN THE CONDITIONS OF THE RIGHT-BANK FOREST STEPPE

This article theoretically summarizes and solves an important scientific problem regarding the clarification of the species composition of the entomocomplex of phytophages in winter wheat crops and the development of effective measures to control their number, depending on the use of plant protection products. As a result of entomological monitoring of winter wheat in Vinnytsia region, 34 species of insects from 16 families that damage this crop were specified. The Diptera range consisted of 11 species, the Coleoptera range was characterized by the greatest species diversity (14 species), their share in the structure of the entomocomplex was 30% of the total. 9 species of phytophages from a number of bugs, or Hemiptera, were identified. The share of Lepidoptera and Homoptera in the structure of the entomocomplex was 8% and 10% each. The orders of Thysanoptera and Hymenoptera had 2 species each. Orthoptera represented the smallest number of species – 2%. The main and most dangerous phytophages that cause significant damage to winter wheat crops from a complex of insect pests have been identified, namely: thrips, cereal aphids, and bread bugs. The effectiveness of modern insecticides against the dominant pests of winter wheat and the optimized methods of their application were evaluated. According to the results of winter wheat seed treatment with insecticides-protozoans, it was established that the lowest number of phytophagous was noted in variants with protozoans Cruiser 350 FS t.c.s. (0,5 l/t), the aphid occupancy rate was 0,04%, in the version where Promet 400 μ.s. (2,0 l/t) occupancy rate 0,06%. Accordingly, the technical efficiency of the Cruiser 350 FS t.c.s. (0,5 l/t) was 90.7%; Promet 400, m.s. (2,0 l/t) – 86.0%, while in the control, the density of larvae of these types of pests was almost 4,5 times higher. It was noted that the highest yield was observed in the version using the insecticide Cruiser 350 FS t.c.s., where the preserved yield was 2,6 t/ha. The lowest grain yield – 3,5 t/ha was noted in the variant with the use of the drug Gaucho 70% s.p. the saved yield did not exceed 0,1 t/ha. It was established that the treatment with protoxins had a positive effect not only on yield, but also on seed quality, in particular, on the weight of 1000 grains. In variants using insecticides, the weight of 1000 grains compared to the control increased by 10,0, 12,5, 14,8 g compared to the control. It was established that the use of insecticides during the winter wheat growing season, which were studied, showed high effectiveness in controlling aphids, bugs and thrips. However, it should be noted that the use of drugs Engeo 247 SC, 1,8 l/ha and Nurelle D, КЕ, 1,1 l/ha best limited the abundance of these phytophages. When using them, an increase in productivity was observed by – 4,5–4,9 t/ha, in the control – 4,0 t/ha

Development and evaluation of triple gene transgenic cotton lines expressing three genes (Cry1Ac-Cry2Ab-EPSPS) for lepidopteran insect pests and herbicide tolerance

Cotton is an international agricultural commodity and the main cash crop of Pakistan of which quality and quantity are subject to various whims of nature. Climate change, insect pest complex, and weeds are reducing its productivity. Here, we have developed triple gene cotton containing EPSPS gene along with two Bt toxin genes Cry1Ac and Cry2Ab using a strategy where all three genes are cloned in the same T-DNA, followed by successful cotton transformation via Agrobacterium-mediated transformation. This strategy has been developed to help cotton breeders in developing new cultivars by incorporating these genes into the non-transgenic or single Bt (Cry1Ac) gene cotton background where all three genes will inherit together. The expression of all three proteins was confirmed through immunostrips and was quantified through enzyme-linked immunosorbent assay (ELISA). The spatio-temporal expression of Bt protein in different parts of triple gene NIBGE cotton plants was determined. Maximum expression was found in leaves followed by seeds and boll rinds. Insect bioassays with cotton bollworms (Helicoverpa armigera), armyworms (Spodoptera litura), and pink bollworms (Pectinophora gossypiella) showed more than 90% mortality. The best performing line (NIBGE-E2) on the basis of spatiotemporal expression, glyphosate assays, and insect mortality data, was used for event characterization by using the genome sequencing approach. The event was successfully characterized and named NIBGE 20-01. A diagnostics test based on event-specific PCR was developed and its ability to distinguish NIBGE 20-01 event from other commercial transgenic cotton events was confirmed. To confirm stable expression of all three proteins in the field conditions, homozygous transgenic lines were grown in the field and the expression was confirmed through immunostrip assays. It was found that all three genes are expressed under field conditions. To show that all three genes are inherited together upon crossing with local elite cotton lines, the F1 generation was grown under glasshouse and field conditions. The expression of all three genes was confirmed under field conditions. Our results showed that transgenic cotton with three genes cloned in the same T-DNA can express all genes and can be conveniently transferred into elite cotton lines through a single cross.

Observations on the herbivore diversity in a managed tea plantation and population dynamics of major insect pest in tea with regional weather

Globally, the pattern of incidence of insect pest complex has been changing in all agroecosystem due to climate change and variability. It is essential to know the incidence pattern of insect pest complex in tea for adopting successful management practice. An investigation was carried out to know the present incidence pest scenario of tea at Assam during March 2019 to Feb 2020. The results show the presence of four mite species belonging to single order and 4 families, and a total of 33 insect species belonging to 7 orders and 27 families. Among them red spider mite, tea mosquito bug, whitefly, leafhopper complex and thrips were recorded as important sucking pests. Leaf roller, tea tortrix, and flush worm were recorded as significant chewing pests. Observation shows that the tea whitefly, leaf hopper, thrips, leaf roller and flush worm has become a serious threat to the tea cultivation. The population dynamics of red spider mite and tea mosquito bug recorded a maximum incidence of 30.27 mites/ leaf and 27.17 infested flush/ bush respectively, during the month of November. Both insects were negatively regulated by maximum temperature and rainfall however relative humidity positively influenced population dynamics, as revealed by the correlation coefficient. This study paves way for the development of a new plant protection module to manage the emerging insect pests in tea plantation.