scholarly journals INSPECTION AND DIVERSITY ON SIAM ORANGE PLANTS (Citrus nobilis l.)

2019 ◽  
Vol 9 (2) ◽  
Author(s):  
Isna Tustiyani ◽  
Siti Syarah Maesyaroh ◽  
Tinah Kartika Dewi ◽  
Jenal Mutakin
Keyword(s):  
Natural Enemies ◽  
Qualitative Method ◽  
Insect Pests ◽  
Diversity Index ◽  
Visual Observation ◽  
Plant Age ◽  
Dominance Index ◽  
Plant Life ◽  
Moderate Measure

The research was conducted to determine the diversity of species and the role of insects between pests and natural enemies insect in siamese orange (Citrus nobilis l.). Observation was done in Karangsari villege, Karangpawitan subdistrick, Garut districk from April to Jone 2018. The method used in qualitative method in five different land basedon the age of siamese orange plants (Citrus nobilis l.) where on the first and seccond field of the plant age 1,5 years, the third land the plant age of 2,5 years, the fourth land the age of the plant 4 years,  and on the fifth is the age of 8 months of plant life which concists of 2 observation, that is observation using yellow trap and visual observation at 5 sample points of siamese orange (Citrus nobilis l.). The results showed that the insects found in citrus (Citrus nobilis l.) plants consisted of 9 orders and conculated using the diversity index and dominance index. Insects found from five different fields, generally insect pests are the highest compared to natural enemies. The highest insects populations is on experiental land 5  with 8 moths of plant life and diversity index on five fields of siamese orange  (Citrus nobilis l.) planting has a moderate measure value and a low dominance index.

scholarly journals Diversity of insect pests and natural enemies as influenced by growth stages and pest management practices in rice

2016 ◽  
Vol 41 (3) ◽  
pp. 461-470
Author(s):  
MA Bakar ◽  
MMH Khan
Keyword(s):  
Natural Enemies ◽  
Untreated Control ◽  
Management Practices ◽  
Insect Pests ◽  
Diversity Index ◽  
Diversity Indices ◽  
Reproductive Stage ◽  
Seedling Stage ◽  
Control Treatment ◽  
Growth Stages

In order to measure the diversity of insect pests and natural enemies in rice ecosystem, the present study was conducted in the research farm of Patuakhali Science and Technology University, Dumki, Patuakhali during the period from January to June, 2012 in boro rice season. Diversity indices of insect pests and their natural enemies were found to be affected by the combined effect of rice growth stages and management practices. Diversity indices of insect pests and their natural enemies differed according to treatments and crop growth stages. In case of insect pests, the untreated control treatment showed the highest diversity index (1.67) at maximum tillering stage and spray (Bipolar 55EC @ 10 ml/10 L of water) + perching at early tillering stage also showed highest richness (26.14) and the highest evenness (0.921) in spray at seedling stage. The highest reciprocal form of Berger-Parker's Dominance index (D) was found in untreated control at maximum tillering stage (3.03) for insect pests. In case of natural enemies, perching showed the highest diversity index (1.88) at reproductive stage. Spraying of insecticide at early tillering stage also showed highest richness (5.06) and the highest evenness (0.982) was in perching at seedling stage. The highest D value was found in perching at reproductive stage (4.67) for natural enemies.Bangladesh J. Agril. Res. 41(3): 461-470, September 2016

scholarly journals Seasonal abundance of the most important insect pests of maize and their natural enemies in Egypt

2021 ◽  
Vol 90 (1) ◽  
pp. 27-40
Author(s):  
Hamdy H. Mahmoud ◽  
Soheir F. Abd El-Rahman ◽  
Mohamed Abd El-Moez Mahbob ◽  
Sayeda S. Ahmed ◽  
Sayeda S. Ahmed
Keyword(s):  
Natural Enemies ◽  
Insect Pests ◽  
Plant Age ◽  
Seasonal Abundance ◽  
Simple Correlation ◽  
Weather Factors ◽  
Rhopalosiphum Maidis ◽  
Orius Albidipennis ◽  
Sesamia Cretica ◽  
The Common

The experiment was conducted to study the seasonal abundance of the most important insect pests of maize and its relation with natural enemies and weather factors in Assiut governorate during 2019 and 2020 seasons.The samples were examined from June to September to determine the population of Limothrips cerealium (Haliday, 1836), Rhopalosiphum maidis (Fitch, 1856) and Sesamia cretica Lederer, 1857 and its the associated predators. The population of L. cerealium recorded a peak in the 4th week of July 2019 and the 1st week of August 2020. The highest population of R. maidis occurred in 1st week of September at both seasons. The simple correlation and regression between L. cerealium population and three weather factors were insignificant in both seasons while S. cretica population were found to be significant with R.H%. The population of R. maidis in the 1st season was insignificant negative with temperatures but was significant in the 2nd season. The plant age was more effective than the weather factors on the population of the three insect pests. The common predators were Orius albidipennis (Reuter, 1884) and Scymnus interruptus (Goeze, 1777)which were highly significant with all three insect pests.

scholarly journals The Role of Natural Enemies and Biopesticides for Sustainable Management of Major Insect Pests of Legumes

2021 ◽  
pp. 207-216
Author(s):  
Sathish Kota ◽  
Vinod Kukanur ◽  
Reddy Ramya Sree ◽  
Naveen Arora ◽  
Jagdish Jaba ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Sustainable Management ◽  
Insect Pests

scholarly journals Natural Enemy (Arthropoda-Insecta) Biodiversity in Vegetable Crops in Northeastern Tamil Nadu, India

2016 ◽  
Vol 53 ◽  
pp. 28-33
Author(s):  
Veeramuthu Anbalagan ◽  
Michael Gabriel Paulraj ◽  
Savarimuthu Ignacimuthu ◽  
Kathirvelu Baskar ◽  
Jonas Gunasekaran
Keyword(s):  
Natural Enemies ◽  
Tamil Nadu ◽  
Insect Pests ◽  
Diversity Index ◽  
Cropping Systems ◽  
Pitfall Traps ◽  
Vegetable Crops ◽  
Dominant Group ◽  
Wiener Diversity Index ◽  
Number Of Individuals

Natural enemies of insect pests in vegetable crops (brinjal, okra and tomato) were recorded and their diversity was studied in Kancheepuram and Tiruvallur Districts, Tamil Nadu. Natural enemies were collected by pitfall traps, sweeping nets and by hand picking from January 2011 to December 2013 twice in a month. Totally 129 species of predatory and parasitic insects were recorded. All the natural enemies were grouped into 50 families under eight different orders. Order hymenoptera contained the highest number of families and species. Among the predators, Coccinellidae (ladybird beetles) was found to be the dominant group with high number of species. It was clear that Coccinellidae, Staphylinidae, Carabidae and Pentatomidae were the predominant natural enemies throughout the study period. In 2013, formicidae formed the major family of occurrence from July to December in the vegetable fields; in this period the total number of individuals collected from all families was the highest. The maximum Shannon-Wiener diversity index was 3.70 during the second season in 2013. Maximum richness (5.99) was recorded in the second season of 2012. The variations in the diversity, species richness and evenness between two cropping systems are discussed in this paper.

scholarly journals Diversity and equitability of insect pests and natural enemies in brinjal field treated with insecticide

2016 ◽  
Vol 4 (1) ◽  
pp. 71-80
Author(s):  
A Awal ◽  
MM Rahman ◽  
MZ Alam ◽  
MMH Khan
Keyword(s):  
Visual Search ◽  
Natural Enemies ◽  
Insect Pests ◽  
Diversity Index ◽  
Insect Pest ◽  
Pitfall Trap ◽  
Pest Species ◽  
Total Abundance ◽  
Net Method ◽  
Sweep Net

Experiment was conducted during winter season to study the diversity and equitability of insect pest species and natural enemies in insecticide treated brinjal fields. Highest number of insect pests were recorded in` Tracer 45 SC, Bactoil (Bt), Nimbicidene 0.03 EC and lowest was in Necstar-50 EC and Proclaim-5 SG treated plots. The highest total abundance of insect pest was recorded in the plots treated with Bactoil and Tracer-45 SC and lowest total abundance was in Helicide (HNPV), Proclaim-5 SG and Booster-10 EC treated plots. The diversity index and equitability of insect pest species were highest in the plots treated with Nimbicidene 0.03 EC and Bactoil in visual search and sweep net methods while Bactoil and Booster 10 EC in pitfall trap method. However, lowest diversity index and equitability were obtained from the plots treated with Booster 10 EC, Proclaim-5 SG, Necstar-50 EC, Tracer-45 SC in visual search and sweep net methods but also in plots treated with Nimbicidene 0.03 EC in pitfall trap method. In case of natural enemies, the highest number of families were recorded in Tracer-45 SC, Nimbicidine 0.03 EC and Bactoil treated plots while lowest was in Helicide, Booster 10 EC, Proclaim-5 SG and Necstar-50 EC treated plots. The highest total abundance of natural enemy was recorded in the plot treated with Bactoil and Tracer-45 SC while lowest abundance was in the plot treated with Necstar-50 EC and Boster-10 EC. The diversity index and equitability of natural enemies were the highest in the plots treated with Proclaim-5 SG, Bactoil, Helicide and Necstar-50 EC in visual search, sweep net method and pitfall trap method while lowest was in Booster 10 EC, Tracer-45 SC treated plots in visual search method, Booster 10 EC and Nimbicidene 0.03 EC treated plots in sweep net method, Necstar-50 EC and Nimbicidene 0.03 EC treated plots in pitfall trap method. Bactoil and Tracer-45 SC were relatively safe for natural enemies and therefore would be fit well into integrated pest management (IPM) against BSFB of brinjal crop.Jahangirnagar University J. Biol. Sci. 4(1): 71-80, 2015 (June)

scholarly journals KEANEKARAGAMAN AVIFAUNA DIURNAL PADA KAWASAN MEMPAWAH MANGROVE PARK DAN SEKITARNYA DI DESA PASIR KABUPATEN MEMPAWAH

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Apik Prabowo ◽  
Iswan Dewantara ◽  
Hari Prayogo
Keyword(s):  
Research Method ◽  
Rice Field ◽  
Diversity Index ◽  
Similarity Index ◽  
Habitat Diversity ◽  
Mangrove Habitat ◽  
Dominance Index ◽  
Point Count ◽  
Point Count Method

Avifauna is one of the animals that is easily found in various places, and is one indicator of environmental quality. Avifauna has the ability to spread seeds, help pollinate, natural predators of other animals, and others. This study aims to record the diversity of diurnal avifauna in area Mempawah Mangrove Park and its surroundings in Pasir Village Mempawah Hilir Subdistrict, Mempawah district. The research method used the Point count method, whose observation points are obtained by Purposive sampling, carried out on 9 July-9 August 2018. The results of observations were 35 species of avifauna consisting of 24 families which were divided into three habitats, in the mangrove habitat there were 18 species and 15 families, mixed garden contained 22 species and 18 families, and rice field contained 17 species and 11 families. The dominance index in the mangrove habitat is C = 0.40, mixed garden is C = 0.10 and rice is C = 0.13, indicates that no species dominates the other species, meaning the role of the avifauna species found in all three same habitat. Diversity index shows that mixed garden habitat has a higher species diversity with () = 2.66, mangrove habitat is () = 2.43 and a rice field habitat is () = 2.40, indicates that the three habitats have diversity with moderately criteria. Evenness index in mangrove habitat is (E) = 0.84, in mixed garden habitat is (E) = 0.85 and a rice field habitat is (E) = 0.85, indicates the three habitats the abundance includes evenly distributed or included in a stable community. The highest similarity index of avifauna species is between mangrove habitat and mixed garden with a percentage of 53.58%, rice field habitat with a garden with a percentage of 53.19%, and mangrove habitat with rice fields with a percentage of 38.49%. The highest similarity was between.Keywords: Avifauna, Diversity, Mempawah Mangrove Park

scholarly journals DIVERSITY OF ENDOPHYTIC FUNGI IN THE ROOT, LEAF, STOLON AND PETIOLE OF ASIATIC PENNYWORT (Centella asiatica)

2019 ◽  
Vol 30 (1) ◽  
pp. 47
Author(s):  
Dwi Ningsih Susilowati ◽  
Amelia Rakhmaniar ◽  
Nani Radiastuti ◽  
Ika Roostika
Keyword(s):  
Endophytic Fungi ◽  
Relative Frequency ◽  
Diversity Index ◽  
Centella Asiatica ◽  
Malt Extract ◽  
Dominance Index ◽  
Plant Parts ◽  
Upgma Cluster Analysis ◽  
Different Parts

<p>Endophytic fungi live in healthy tissues of many plants, including in medicinal plant such as Asiatic pennywort (<em>Centella asiatica</em>)<em>.</em> These fungi exist in different parts of the plant as symbionts. The study aimed to isolate endophytic fungi from various parts of Asiatic pennywort of Malaysia accession and characterize their nature.  Three individual plants of Asiatic pennywort (3 months-old) were obtained from the Sringanis Medicinal Garden in Bogor. The endophytes were isolated on Malt Extract Agar. The community structures of the endophytes were analyzed based on their diversity, colonization, dominance index, and relative frequency of occurrence of the isolated endophytic fungi. A total of 78 isolates have been obtained from three individual plants and clustered into 22 morphotypes consisted of 18 morphotypes of Ascomycota and 4 morphotypes of Basidiomycota divisions. The stolons harbored more endophytes (22.9 %) followed by leaf (16.7 %), root (11.8 %), and petiole (7.6 %). The diversity index was classified as medium category with the highest result (1.91) was found in the root, followed by leaf (1.79), stolon (1.75), and petiole (1.29). The most dominant endophytes were identified as <em>Ceratobasidium </em>sp<em>.</em>, <em>Colletotrichum </em>sp, and <em>Fusarium </em>sp. <em>Ceratobasidium</em> sp. has the highest dominance index (0.02). UPGMA cluster analysis grouped the endophytic fungi into distinct clusters based on the plant parts origin. This study implied that stolon was the the most suitable part of Asiatic pennywort for isolating endophytic fungi. Further study is required to examine the role of the endophytic fungi to produce secondary metabolites in Asiatic pennywort.</p>

scholarly journals PERAN REFUGIA SEBAGAI MEDIA KONSERVASI ARTHROPODA DI LAHAN PADI DESA DELIKSUMBER

2021 ◽  
Vol 15 (2) ◽  
pp. 17-32
Author(s):  
Ari Wijayanti ◽  
Wiwin Windriyanti ◽  
Noni Rahmadhini
Keyword(s):  
Species Diversity ◽  
Sampling Method ◽  
Diversity Index ◽  
Insect Pest ◽  
Species Diversity Index ◽  
Dominance Index ◽  
Evenness Index ◽  
Yellow Traps ◽  
Richness Index

Rice is basic neet for Indonesia people. East Java experienced decrease rice production 2% in 2014, the problem was insect pest. Insecticides are dangerous that replaced use refugia attracting biological agens. Purpose of the research to discover the role of refugia as conservation medium in suppressing pets attacks and increasing the diversity arthropod populations in rice fields.  This study uses a direct insect sampling method and uses traps such as sweep nets, yellow traps, pitfall traps and light traps. Identification of insects using an introduction to the study insect and iNaturalist. Analysis of the observational data quantitatively by calculating the species diversity index (H’), evenness index (E), Richness index (R) and dominance index (C) then tabulated using excel. observations indicate the number of insects found on land A (rice with refugia) was 5661 individuals consisting of 12 ordo, 61 family and 94 species. Meanwhile on land B (rice without refugia) was 3,198 individuals consisting of 11 ordo, 43 family and 56 species. Refugia affected the population of biological agens more on land A was 2707 individuals than on land B was 1215 individuals. While the pest population on land A much less as 364 individuals than on land B as 763 individuals. Tabulation from the calculation of the species diversity index as 0.142 and 0.118, the species evenness index as 0.030  and 0.025, the dominance index of 0.0004 and 0.0013 is classified as low, while the species richness index of 10.76 and 6.82 is classified as high.

scholarly journals Diversity and Abundance of Insect in Conventional Apple (Malus sylvestris (L.) Mill) Plantation at Kota Batu, East Java

2020 ◽  
Vol 8 (3) ◽  
pp. 194-201
Author(s):  
Bayu Kurniawan ◽  
RC. Hidayat Soesilohadi
Keyword(s):  
Natural Enemies ◽  
Insect Pests ◽  
Negative Impact ◽  
Diversity Index ◽  
Insect Pest ◽  
Apis Cerana ◽  
Light Trap ◽  
Research Centre ◽  
Wiener Diversity Index ◽  
Early Flower

Apple is a plant that susceptible toward pests and diseases. Application of pesticide to suppress insect pest population gave negative impact toward natural enemies and insect pollinators. The purpose of this research was to determine the diversity and dominance of insect pests, pollinators, and natural enemies of each phase of apple plant development in conventional plantations in Kota Batu, East Java. This research was conducted in February to May 2016 in each phase of apple growth namely, after defoliation, early flower, late flower, early fruit, and late fruit. Plot size was 10x10 m2 with total 5 plots and total plants in each plot were 60 trees. Collection methods were active collection (hand picking, insect net, and beating tray) and passive collection (yellow trap, pitfall trap, light trap, and stainer trap). Preservation methods used in this research were dry preservatoin and wet preservation. Identification was conducted in Laboratorium of Entomology, Faculty of Biology UGM and Laboratorium Entomology, Zoology Division, Research Centre for Biology Indonesian Institute of Sciences, Cibinong. Data analyzed by using Shannon-Wiener Diversity Index, Simpson Dominance Index and Abundance Formulation. The results showed that total insects that was caught consist of 38 species belong to 9 orders. Diversity index in each phase of apple growth were: after defoliation (0.69), early flower (1.39), late flower (1.86), early fruit (0.66), and late fruit (1.24). Domination index each phase of apple growth were after defoliation (0.50), early flower (0.34), late flower (0.21), early fruit (0.75), and late fruit (0.40). Diversity index of potential insect as pest (1.46), as pollinator (1.29), and as natural enemies (1.18). The highest abundance of insect as pollinator was Apis cerana, as natural enemy was Pantala flavescens, and as pest was Aphis gossypii.

scholarly journals Diversity and abundance of terrestrial Gastropods on the slopes of Mount Arjuna-Welirang, East Java, Indonesia

2021 ◽  
Vol 22 (10) ◽  
Author(s):  
Putri Afin Nurhayati ◽  
MOCH AFFANDI ◽  
AYU SAVITRI NURINSIYAH
Keyword(s):  
New Records ◽  
Diversity Index ◽  
Canopy Cover ◽  
Land Snail ◽  
Visual Observation ◽  
Snail Species ◽  
Dominance Index ◽  
Conservation Area ◽  
Forest Park ◽  
Terrestrial Gastropods

Abstract. Nurhayati PA, Affandi M, Nurinsiyah AS. 2021. Diversity and abundance of terrestrial Gastropods on the slopes of Mount Arjuna-Welirang, East Java, Indonesia. Biodiversitas 22: 4193-4202. Before this study, the latest list of land snail species from Mt. Arjuna-Welirang was published in 1952. The current study aims to update the list of terrestrial Gastropods in the area, focusing on Sumber Brantas Arboretum and Raden Soerjo Forest Park Conservation Area (Tahura), East Java, Indonesia. Live snails and dead shells were collected from 24 10 × 10 m2 sampling plots to determine species richness, composition, and abundance. Sampling was carried out by combining visual observation (direct collection) and sorting-sieving soil-leaf litter samples. Total 646 specimens belonging to eight families and 13 species were collected, all new records to the area. Thus, the number of species known from Mt. Arjuna-Welirang was increased to 16 species from nine families. The diversity index of the Mt. Arjuna-Welirang slope was 1.1, and the dominance index was 0.54. The Tahura had a higher diversity index than the Arboretum, at 2.0 and 0.38, respectively, but the dominance index for Tahura was lower (0.18 and 0.85, respectively). This was due to the dominance of Bradybaena similaris, an invasive species in the latter area. Less canopy cover and more human activity in the Arboretum are factors that might cause this discrepancy. Many land snail species are sensitive to desiccation and habitat disturbance. Therefore, minimizing habitat changes and human activities is necessary to maintain or increase native land snail species diversity.

Sign in / Sign up

Export Citation Format

Share Document