Seasonal incidence of major insect pests of brinjal, Solanum melongena L. under agro climatic conditions of Varanasi region

2018 ◽  
Vol 26 (2) ◽  
pp. 281
Author(s):  
L.C. Raidu ◽  
R.S. Meena ◽  
M.A. Laichattiwar
Keyword(s):  
Insect Pests ◽  
Solanum Melongena ◽  
Climatic Conditions ◽  
Seasonal Incidence

scholarly journals Seasonal incidence and bionomics of rose aphid, Macrosiphum rosae (Linnaeus, 1758), (Hemiptera: Aphididae) in Kashmir, India

2020 ◽  
Vol 115 (2) ◽  
pp. 283
Author(s):  
Insha YOUSUF ◽  
Abdul A. BUHROO
Keyword(s):  
Large Scale ◽  
Insect Pests ◽  
Management Plan ◽  
Climatic Conditions ◽  
International Standards ◽  
Economic Losses ◽  
Scale Production ◽  
Pest Species ◽  
Seasonal Incidence ◽  
Macrosiphum Rosae

<p>Rose is the principal flower of the world floriculture industry that is being exclusively used as cut flower, potted plant and garden plant. It plays significant part in numerous industries viz. food, perfumery and cosmetic industries. About 96 % of women’s perfumes contain true Bulgarian rose oil. Roses are well acclimatized in Jammu &amp; Kashmir because of its suitable agro climatic conditions which can permit its large scale production and rose products produced in the state are at par with the international standards. But the aesthetic and commercial value of roses is greatly lowered by numerous insect pests resulting in low yield. However, its major pest include aphid species most notoriously Macrosiphum rosae that pose many challenges and threats to rose plant cultivation. Aphid colonies on roses result in reduction of medical value of the plant and cause economic losses to growers particularly during spring and summer season. In order to reduce the economic losses inflicted by rose aphid, it is necessary to study different biological parameters of this pest species so that an effective management plan can be formulated.</p>

Seasonal Incidence of Major Sternorrhynchan Insect Pests Infesting Arecanut In South India

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Vinod Kumar Dubey ◽  
C.M. Kalleshwaraswamy ◽  
B.K. Shivanna
Keyword(s):  
South India ◽  
Field Experiments ◽  
Insect Pests ◽  
Transitional Zone ◽  
Maximum Temperature ◽  
Seasonal Incidence ◽  
Correlation Studies ◽  
Pseudococcus Longispinus ◽  
Sunshine Hours ◽  
Chrysomphalus Aonidum

Field experiments were conducted during 2019-20 to know the seasonal incidence of three species of sternorrhynchan insect pests infesting in arecanut viz., whitefly, Aleurocanthus arecae, armoured scale, Chrysomphalus aonidum and mealybug, Pseudococcus longispinus in two different locations under southern transitional zone. The study revealed that, all the three species infesting arecanut were active throughout the year. Correlation studies of whiteflies showed that, rainfall was significantly positively correlated and maximum temperature and sunshine hours were significantly negatively correlated. For armoured scales, non-significant positive correlation with minimum temperature and for the mealybug resulted that the maximum temperature was significantly positively correlated whereas the relative humidity was significantly negatively correlated.

scholarly journals The Role of Soil Amendments on Population Dynamics of Insect Pests, Growth Parameters and Yield of Eggplant, Solanum melongena (L.) Moench

2017 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
P. K. Baidoo ◽  
M. B. Mochiah ◽  
D. Asare ◽  
A. A. Sefah
Keyword(s):  
Soil Fertility ◽  
Plant Height ◽  
Bemisia Tabaci ◽  
Insect Pests ◽  
Soil Amendments ◽  
Aphis Gossypii ◽  
Solanum Melongena ◽  
Cow Dung ◽  
Leucinodes Orbonalis ◽  
Number Of Leaves

Loss of soil fertility as a result of continuous cropping on the same piece of land has necessitated the need to improve soil fertility for better crop yields. Inorganic and organic fertilizers have been used to improve soil fertility, however, excessive use of soil amendments improve vegetative growth of plants thereby attracting large numbers of insect pests. Cow dung and poultry droppings were used as soil amendments in a field experiment using eggplant Solanum melongena. The effects of these organic manures were compared with inorganic fertilizer (NPK) and a control where there was no application of soil amendment in a randomized complete block design with 3 replicates. Parameters studied were pests’ and their numbers, plant height, number of leaves per plant, leaf area, stem girth and yield. The major insect pests identified on the plant were Bemisia tabaci, Aphis gossypii, Leucinodes orbonalis and Eublemma olivacea. Bemisia tabaci and Aphis gossypii scores were significantly larger on cow dung and poultry manure plots. Leucinodes orbonalis and Eublemma olivacea numbers were not significantly different on the treated and control plots. Mean plant height, number of leaves and yield differed significantly among the soil amended plots. Even though soil amendments improve the nutrient content of the soil and the yield of crops it could lead to increase in pests numbers and damage caused to plants.

scholarly journals Hardware – wheat pests as elements of the species consortium

2019 ◽  
Vol 30 (2) ◽  
pp. 106-112
Author(s):  
T. M. Kolombar
Keyword(s):  
Species Composition ◽  
Insect Pests ◽  
Wheat Yield ◽  
Climatic Conditions ◽  
Second Order ◽  
Organic Production ◽  
The State ◽  
Insect Species ◽  
Pest Species ◽  
The Face

Annually in the world, insect pests kill 10–15 % of the crop yield, which in the face of increasing humanity creates a global problem for food security. For the territory of Ukraine in some years, the loss of wheat yields reach 25 % and, in the face of this tendency, real risks to the security of the state are created. Considering that the agrarian trend of the state development has been increasing in recent years, the development of grain-adapted to the ecological and climatic conditions of Ukraine is a priority direction of the development of domestic agriculture. And the development of new environmentally friendly methods of controlling pests of wheat using parasitic organisms will become a fundamentally new and pressing issue in the development of organic production in the country. The general list of pest species that can cause serious wheat yield and forage reduction in Ukraine includes more than 230 names, but only 18 species are able toentail the biggest losses. Among them belong to the order Coleoptera. One insect species is usually a host of several species of mites, nematodes and up to ten species of gregarines and microsporidia. Unfortunately, the taxonomic composition of parasites of phytophagous pets of wheat in Ukraine has not been thoroughly investigated. We studied the interrelation between parasites of 4 phytophagous insects of wheat as well as of 14 insect species found in granaries. The study of the species composition of parasitic organisms of wheat and grain pests is based on the study of the elementary part of the consortium ecosystem, where they act as second order consortia. Phytophagous parasites of wheat and collar pests of cereals, as second-order consorts, have been fragmented worldwide. The purpose of this work is to determine the species composition of gregarine as a component of wheat consortium for their further use in the creation of integrated methods of protection of wheat and products of its processing. As a result, 28 species of gregarines were registered, which belong to seven families (Didymophyidae, Ophryocystidae, Hirmocystidae, Lipotrophidae, Stylocephalidae, Actinocephalidae and Gregarinidae). On the average, 1–2 species of gregarines parasitize in one pest species. 7–10 species of parasites were identified in some insects of the family Tenebrionidae (Tenebrio molitor Linnaeus, 1758 and Tribolium confusum Jacquelin du Val, 1863). Each presented parasite is characteristic of 1–2 species of pests, but there are species of gregarines that infect up to four species of model species, such as Gregarina cuneata Stein, 1848. The largest number of individuals who are infested with gregarines belong to such families as Tenebrionidae and Dermestidae (38,6 % and 36,0 % of the total number of species, respectively). On pests – phytophages parasitizes about 8 species of gregarine families Stylocephalidae, Gregarinidae, Actinocephalidae. For barns pests are recorded barnacles of all 7 families.

Validation of a QuEChERS-Based Method for the Estimation of Afidopyropen in Brinjal (Solanum Melongena L.) and Soil

2020 ◽  
Vol 103 (1) ◽  
pp. 68-72
Author(s):  
Suchi Chawla ◽  
Hetal N Gor ◽  
Hemlatta K Patel ◽  
Payal P Upadhyay ◽  
Paresh G Shah
Keyword(s):  
Insect Pests ◽  
Matrix Effects ◽  
Residue Analysis ◽  
Solanum Melongena ◽  
Environmental Safety ◽  
Coefficient Of Determination ◽  
Effective Control ◽  
Vegetable Crops ◽  
Liquid Chromatograph ◽  
Acceptable Range

Abstract Background: Afidopyropen is a recently introduced insecticide that provides effective control of insect pests in vegetable crops, including brinjal. Field applications of this insecticide can often result in accumulation of residues in brinjal fruits, leaves, and soil at harvest, which might be a concern for food and environmental safety. This demands an appropriate method for analysis of the residues of this insecticide in these matrices to facilitate residue monitoring and safety compliance checks. Objective: The study aims to validate a quick, easy, cheap, effective, rugged, and safe (QuEChERS)-based method for estimation of afidopyropen in/on brinjal leaf, fruit, and soil by ultrahigh-performance liquid chromatograph-tandem mass spectrometer (LC-MS/MS). Methods: The brinjal fruit, leaf, and soil samples were extracted by an optimized QuEChERS workflow–based sample preparation method and analyzed by LC-MS/MS. Results: Linearity [with coefficient of determination (R2) &gt;0.99] was obtained in calibration curves drawn from standards prepared in the matrix and neat solvent. Although negligible matrix effects were noted in fruit and soil, ion suppression was significant in the leaf matrix (71.6%). The recoveries were within the acceptable range of 70–120%, with relative SD ≤20%. In all cases, Horwitz ratio values were within the acceptable range of 0.3–1.3, indicating satisfactory repeatability. The LOQs were 0.004, 0.001, and 0.001 mg/kg for brinjal fruit, leaf, and soil, respectively. At the spiking concentrations of 0.01, 0.05, and 0.1 mg/kg, the estimated measurement uncertainty was &lt;50% for all matrices. Conclusions: Because of its satisfactory precision and accuracy, the proposed method can be extended for estimation of afidopyropen in other vegetables for evaluating maximum residue limit compliance. Highlights: The study reports an optimized method for high-throughput residue analysis of afidopyropen in/on brinjal leaf, fruit, and soil. The accuracy, precision, selectivity, and sensitivity of the method comply with the regulatory requirements.

scholarly journals Seasonal Incidence of Insect Pests on Mungbean (Vigna radiata) in Correlation with Meteorological data

2020 ◽  
Author(s):  
L. Gehlot ◽  
A. K. Prajapat
Keyword(s):  
Negative Correlation ◽  
Mung Bean ◽  
Trichoplusia Ni ◽  
Insect Pests ◽  
Meteorological Data ◽  
Harmful Effect ◽  
Green Gram ◽  
Seasonal Incidence ◽  
Positive Correlation ◽  
Bean Crop

Background: Mung bean is important pulse crop in India due to its nutritional value. Its grain contains protein, fat, carbohydrate, vitamin and minerals therefore human uses it in various ways in food. Mung bean crop cultivated in kharif, rabi and summer season in India. Various species of insect pests are infested to mung bean crop and cause very harmful effect to crop and farmer. These pests decrease productivity and quality of mung bean. Methods: Field experiment was carried out for the study of seasonal incidence of insect pests on RMG-62 variety of green gram during kharif season 2019. Mung bean was grown on a plot size of 25 m × 25m with 50 cm row to row and 20 cm plant to plant spacing. Randomly selected 20 plants from weekly interval to record population of insect pests. The population of jassid and whitefly was recorded by counting number of pests on 2 upper, 2 middle and 2 lower leaves of a plant whereas population of aphid was recorded by counting number of aphid on 10 cm twig/plant. Result: The mean population of aphid, jassid and whitefly were recorded. Incidence of aphid started during 33th standard week with 0.9 aphid/10cm twig/plant, jassid and whitefly started during 32th standard week with 0.3 jassid/6 leaves/plant and 2.1 whitefly/6 leaves/plant, respectively. Peak mean population of aphid, jassid and whitefly reached during 36th standard week with 10.2 aphid/10cm twig/plant, 10.1 jassid/6 leaves/plant and 14.1 whitefly/6 leaves/plant, respectively. Simultaneously six species of insect pests also infested green gram, these were Mylabris pustulata, Helicoverpa armigera, Trichoplusia ni., Lampides boeticus, Spoladea recurvalis and Diaphania indica. The population of aphid, jassid and whitefly positively correlated with temperature. Population of aphid and whitefly had positive correlation with humidity, whereas jassid population had positive correlation with minimum humidity and negative correlation with maximum and average humidity. All three pests expressed negative correlation with rainfall.

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