scholarly journals Diversity of Arthropods and Parasitic Nematodes Population in Intercropping Patterns of Robusta Coffee

2019 ◽  
Vol 35 (1) ◽  
pp. 33-41
Author(s):  
Dwi Suci Rahayu ◽  
Soekadar Wiryadiputra
Keyword(s):  
Diversity Index ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
Cropping Pattern ◽  
Coffee Plantations ◽  
Robusta Coffee ◽  
Wiener Diversity Index ◽  
The One ◽  
Intercropping Pattern ◽  
Shade Plants

Shade plants affect the microclimates around the plants which directly affect the population of arthropods, especially insects. Therefore, this research was needed to analyze the diversity and role composition of insects in Robusta coffee plantations based on different intensity of shade plants. Samplings of insects and parasitic nematodes were conducted in intercropping patterns of Robusta coffee namely mixed intercropping patterns, coffee-pepper intercropping patterns and coffee-banana intercropping patterns. In each intercropping pattern of Robusta coffee, samplings were conducted as much as ten plants using random sampling. Data analysis was done by calculating the Shannon-Wiener diversity index (H') and evenness index (E). The results showed that diversity index in all Robusta coffee intercropping patterns were < 3, indicating that the diversity of insects in all intercropping patterns was relatively. Insect diversity in coffee-pepper inter- cropping pattern is found higher than the one in either mixed intercropping pattern or coffee-banana intercropping patterns. Out of those intercropping patterns, insects from Formicidae family of Hymenoptera order was found to be the most dominant insects. The composition of insects in all of those three intercropping patterns has been mainly dominated by insects from the family of Formicidae and Hymenoptera order since they are natural enemy insects. Pratylenchus coffeaehas been confirmed as the most dominant nematode species in the three Robusta coffee intercropping pattern. P. coffeae had the highest population average of 3279 in coffee-pepper intercropping pattern.

scholarly journals Short Communication: Abundance and diversity of plant parasitic nematodes associated with BP 308 and BP 42 clones of robusta coffee in Java, Indonesia

2018 ◽  
Vol 19 (1) ◽  
pp. 67-70 ◽  
Author(s):  
MUTALA’LIAH MUTALA’LIAH ◽  
SIWI INDARTI ◽  
NUGROHO SUSETYA PUTRA
Keyword(s):  
Parasitic Nematodes ◽  
Limiting Factor ◽  
Plant Parasitic Nematodes ◽  
Field Site ◽  
Coffee Plantations ◽  
Robusta Coffee ◽  
Central Java ◽  
Abundant Genus ◽  
Abundance And Diversity ◽  
Plant Parasitic

Mutala’liah, Indarti S, Putra NS. 2018. Abundance and diversity of plant parasitic nematodes associated with BP 308 and BP 42 clones of robusta coffee in Java, Indonesia. Biodiversitas 19: 67-70. Plant parasitic nematodes are an important limiting factor in the productivity of coffee plantations. Clone resistance and soil texture influence the severity of plant infestation by parasitic nematodes. The aim of this research was to determine the diversity of plant parasitic nematodes in two clone of Robusta coffee (BP 308 and BP 42) on soils with different contents of sand. The research was carried out in Malangsari Field (East Java), Getas Field (Central Java) and Candiroto Field (Central Java). Nematodes were extracted from soil samples by the decanting method using a whitehead tray, while roots sample by the funnel spray method with a ‘mistifier’. Differences in diversity of nematode genera between clone and location combinations were analyzed by ANOVA. The results showed that there were five genera associated with Robusta coffee, i.e. Pratylenchus, Helicotylenchus, Radopholus, Rotylenchulus, and Meloidogyne. With clone BP 308 at the Malangsari Field site where soil contained 31.3 % sand, Pratylenchus was the most abundant genus i.e. 6 nematodes/100 mL soil. On the same clone, BP 308, at the Getas Field site where soil contained 26.9 % sand, Meloidogyne was the most abundant i.e. 14.4 nematodes/10 g roots. With clone BP 42 at the Candiroto Field site with 25.5 % sand in the soil, Pratylenchus was highly abundant i.e. 60 nematodes/10 g roots.

scholarly journals Estructura y diversidad de la vegetación del matorral espinoso tamaulipeco con condiciones prístinas en el noreste de México

2018 ◽  
Vol 66 (4) ◽  
Author(s):  
Carlos Gerardo Valdez Marroquín ◽  
Marco Antonio Guzmán ◽  
Arcadio Valdés ◽  
Rahim Forougbakhch ◽  
Marco Antonio Alvarado ◽  
...  
Keyword(s):  
Plant Community ◽  
Diversity Index ◽  
Importance Value Index ◽  
Importance Value ◽  
Coverage Density ◽  
A Value ◽  
Wiener Diversity Index ◽  
Structural Variables ◽  
Species Area ◽  
The One

Tamaulipan scrubland is a type of shrub vegetation endemic to Northeastern Mexico and Southern Texas in the U.S.The structure of the Tamaulipan scrubland was evaluated in the study, establishing the minimum area with plots of 256 m2 by determining the species-area curve, valuing the composition and diversity of the strata of the plant species (arboreal, shrub, low forest, semi shrubby, herbaceous and epiphytes); three sampling sites of 16 × 16 m were established. Dasometric information such as height, diameter and cup coverage was recorded to determine the structural variables of coverage, density, relative density, dominance, relative dominance, frequency, relative frequency and Importance Value Index, as well as estimation of the Margalef richness index, Shannon-Wiener diversity index, Menhinick, Simpson and Pielou’s evenness index. The floristic richness was of 33 species distributed in 30 genera and 19 families, leaving the predominance value of the highest species of Leguminosae (Fabaceae). Six strata were recognized for the studied vegetation from which the highest IVI was Helietta parvifolia with 17.68 % for the shrubby stratum with 14 species and within the plant community of the MET the IVI was 8.53 %; for the low forest stratum with 8 species, the one with the highest IVI was Bernardia myricifolia with 39.20 %; and within the vegetal community 7.74 % for the semi shrubby there were 7 species where Lantana canescens has an IVI of 60.38 % and of 13.09 % inside the community. For the herbaceous stratum with 2 species, Wissadula sp. dominates with 54.20 % and 2.06 % for the community. In the arboreal stratum, the species with the highest IVI was Celtis laevigata with 100.00 % and when integrated to the plant community, it presented a value of 1.98 %. For the stratum formed by the epiphytes, the species Adiantum capillus-veneris had an IVI of 100 % and inside the plant community presented an IVI of 1.55 %. For the MET plant community studied, an H' value of 2.42 and a DMg value of 4.34 was obtained.

scholarly journals A High-Throughput Molecular Pipeline Reveals the Diversity in Prevalence and Abundance of Pratylenchus and Meloidogyne Species in Coffee Plantations

2018 ◽  
Vol 108 (5) ◽  
pp. 641-650 ◽  
Author(s):  
Christopher A. Bell ◽  
Howard J. Atkinson ◽  
Alan C. Andrade ◽  
Hoa X. Nguyen ◽  
I. Gede Swibawa ◽  
...  
Keyword(s):  
Nematode Species ◽  
Black Pepper ◽  
Global Scale ◽  
Soil Samples ◽  
Piper Nigrum ◽  
Parasitic Nematodes ◽  
Coffee Production ◽  
Coffee Plantations ◽  
Meloidogyne Spp ◽  
The Cost

Coffee yields are adversely affected by plant-parasitic nematodes and the pathogens are largely underreported because a simple and reliable identification method is not available. We describe a polymerase chain reaction-based approach to rapidly detect and quantify the major Pratylenchus and Meloidogyne nematode species that are capable of parasitizing coffee. The procedure was applied to soil samples obtained from a number of coffee farms in Brazil, Vietnam, and Indonesia to assess the prevalence of these species associated both with coffee (Coffea arabica and C. canephora) and its intercropped species Musa acuminata (banana) and Piper nigrum (black pepper). Pratylenchus coffeae and P. brachyurus were associated with coffee in all three countries but there were distinct profiles of Meloidogyne spp. Meloidogyne incognita, M. exigua, and M. paranaensis were identified in samples from Brazil and M. incognita and M. hapla were detected around the roots of coffee in Vietnam. No Meloidogyne spp. were detected in samples from Indonesia. There was a high abundance of Meloidogyne spp. in soil samples in which Pratylenchus spp. were low or not detected, suggesting that the success of one genus may deter another. Meloidogyne spp. in Vietnam and Pratylenchus spp. in Indonesia were more numerous around intercropped plants than in association with coffee. The data suggest a widespread but differential nematode problem associated with coffee production across the regions studied. The issue is compounded by the current choice of intercrops that support large nematode populations. Wider application of the approach would elucidate the true global scale of the nematode problem and the cost to coffee production. [Formula: see text] Copyright © 2018 The Author(s). This is an open access article distributed under the CC BY 4.0 International license .

scholarly journals In vitro study on the nematicidal effect of different plant extracts on Pratylenchus penetrans and Meloidogyne chitwoodi

2019 ◽  
Vol 72 (3) ◽  
pp. 8945-8952
Author(s):  
Aníbal Franco Cóndor Golec
Keyword(s):  
In Vitro Study ◽  
Nematode Species ◽  
Vitro Study ◽  
Parasitic Nematodes ◽  
Pratylenchus Penetrans ◽  
Plant Parasitic Nematodes ◽  
Meloidogyne Chitwoodi ◽  
The One ◽  
Positive Results

The purpose of this in vitro study was to evaluate the nematicidal effect of different glucosinolates and other secondary metabolites extracted from several plant species on the plant-parasitic nematodes Pratylenchus penetrans and Meloidogyne chitwoodi. Glucosinolate extracts from 16 species of genera Brassica, seven Lolium species and one species of Lupinus were used to investigate their nematicidal effect in vitro. From the tested extracts, the one obtained from Brassica juncea (oriental) showed the most promising results, controlling both nematode species. Lupinus sp. also showed positive results when tested against P. penetrans.

scholarly journals Types of Weed and Their Potentials as the Host Plant of Parasitic Nematodes in Arabica and Robusta Coffee Plant in Kalibendo Banyuwangi

BIOEDUKASI ◽  
2018 ◽  
pp. 68
Author(s):  
Tommy Murdiono ◽  
Iis Nur Asyiah ◽  
Pujiastuti .
Keyword(s):  
Host Plant ◽  
Host Plants ◽  
Parasitic Nematode ◽  
Parasitic Nematodes ◽  
Exploratory Research ◽  
Coffee Plant ◽  
Ageratum Conyzoides ◽  
Coffee Plantations ◽  
Robusta Coffee ◽  
Heliotropium Indicum

This study aimed to determine the type of weed and its potential as parasite nematode host plants in arabica and robusta plantations. This study included a qualitative exploratory research where weed sampling was carried out by roaming in the area of ​​Arabica and Robusta coffee plantations. Various types of weeds were taken, identified, and then extracted its root to find out the existence of nematodes. The result showed that there were 8 species of weeds where nematodes can be found in their roots. Those weeds were Tuton (Paspalum mandiocanum), Oxtail (Heliotropium indicum), Paku (Davallia denticulata), Pendul (Kyllinga brevifolia). Sintrong (Crassocephalum crepidioides), Bandotan (Ageratum conyzoides), Oplismenus hirtellus, Princess shame (Mimosa invisa). The result of nematodes identification revealed that it was Pratilenchus coffeae, a common parasitic nematode that attacks coffee.   Keywords: weed type, alternative weed nematode host, coffee

Abundance, diversity, and distribution of plant-parasitic nematodes in horticultural soils under different management systems in a tomato-producing area in Argentina

Nematology ◽  
2021 ◽  
pp. 1-10
Author(s):  
Augusto Salas ◽  
Marcelo D. Barrera ◽  
María F. Achinelly
Keyword(s):  
Diversity Index ◽  
Control Strategies ◽  
Feeding Habits ◽  
Management Systems ◽  
Parasitic Nematodes ◽  
Frequency Diversity ◽  
Tomato Crop ◽  
Horticultural Crops ◽  
Wiener Diversity Index ◽  
Plant Parasitic

Summary Monitoring the diversity and structure of plant-parasitic nematode (PPN) communities together with developing appropriate control strategies can reduce the occurrence of these pathogens and other plant pests in horticultural crops. In this context a study of the abundance, frequency, diversity and distribution of PPN in horticultural soils under glasshouse conditions from the Green Belt of La Plata, Buenos Aires, Argentina, under different management systems was undertaken. Soil samples were collected from three horticultural areas with different tomato crop managements: agroecological crop (AC); organic crop with Brassicaceae soil amendments (OC); intensive conventional crop treated with methyl bromide (MeBr) (IC). The parameters evaluated were: nematode genera richness (G); Shannon-Wiener diversity index () (Hutcheson’s t-test was applied for this index); equitability index (E); abundance; and frequency of genera. ANOSIM and SIMPER statistical analyses were performed to find significant differences between the nematode assemblages from the different sites. A total of 14 genera of PPN were identified among the three crop sites. Members of the feeding habits categories ectoparasites, semi-endoparasites, migratory endoparasites and sedentary endoparasites were observed. Statistical analysis enabled us to characterise each site based on the composition of the nematode assemblages. Helicotylenchus, Tylenchus and Nacobbus were the most frequent and abundant genera. AC and OC showed similar values of richness and diversity; the crop treated with MeBr (IC) showed the lowest diversity of PPN.

scholarly journals Short Communication: Nematodes associated with Robusta coffee plantations in Malang District, East Java, Indonesia

2021 ◽  
Vol 22 (8) ◽  
Author(s):  
HAGUS TARNO ◽  
EYIK WIDYANSYAFICHA MARSUDI ◽  
TITI WIDJAYANTI ◽  
Yogo Setiawan
Keyword(s):  
Soil Ph ◽  
Short Communication ◽  
Morphological Characteristics ◽  
Diversity Indices ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Coffee Plantations ◽  
Robusta Coffee ◽  
Nematode Abundance ◽  
Plant Parasitic

Abstract. Tarno H, Marsudi EW, Widjayanti T, Setiawan Y. 2021. Short Communication: Nematodes associated with Robusta coffee plantations in Malang District, East Java, Indonesia. Biodiversitas 22: 3306-3312. Coffee (Coffea spp.) is an important commodity in Indonesia. Nematodes have different roles, such as plant parasites and non-parasites, and are commonly found in the soil of coffee plantations. This research determined the ecological role, diversity, and abundance of nematodes in three coffee plantations in Malang District, East Java. We used a Whitehead tray to extract and isolate nematodes from the soil and root samples. Nematodes were identified based on their morphological characteristics. Analysis of variance and diversity indices were used to identify the differences among three coffee plantations. We identified eight nematode genera in the Ngantang sub-district site. In the Jatikerto Agrotechnopark and University of Brawijaya Forest sites, six genera were identified. Criconemoides, Pratylenchus, Xiphinema, Helicotylenchus are plant-parasitic nematodes, and Mononchus, Dorylaimus, Rhabditis, and Aphanolaimus are non-plant parasitic nematodes. Non-plant parasitic nematodes were more abundant than plant-parasitic nematodes in all sites. Non-plant parasitic nematode, Dorylaimus was the dominant genus in this study (272 individuals), ca. 35% of the total nematodes collected. In this study, the differences between coffee plantations and soil pH influence nematode abundance. The nematode abundance increases when the soil pH is lower.

Diversité floristique spontanée des plantations de café et de cacao dans la forêt classée de Monogaga, Côte d'Ivoire | Spontaneous floristic diversity of cocoa and coffee plantations in the classified forest of Monogaga, Côte d'Ivoire (reviewed paper)

2006 ◽  
Vol 157 (2) ◽  
pp. 31-36 ◽  
Author(s):  
Constant Yves Adou Yao ◽  
Edouard Kouakou N'Guessan
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Diversity Index ◽  
Agricultural Practices ◽  
Woody Species ◽  
Secondary Forests ◽  
Cote D’Ivoire ◽  
Coffee Plantations ◽  
Côte D'ivoire ◽  
High Tree Density

The inventory and the analysis of the woody species preserved in the different categories of cocoa and coffee plantations showed that they are relatively diversified (presence of endemic, rare and threatened species). They also preserved high tree density and high basal areas. The young plantations are especially diversified. Their number of species,density and basal areas and diversity index are similar to those of the neighbouring old growth and secondary forests. Older plantations display a sharp decline of diversity over time. Agricultural practices in the region represent a threat in the medium term to the preservation of biodiversity.

Structural Transformation of Punjab Agriculture and its Environmental Implications

2020 ◽  
pp. 533-546
Keyword(s):  
Structural Transformation ◽  
Diversity Index ◽  
Green Revolution ◽  
Agricultural Practices ◽  
Secondary Data ◽  
Cropping Pattern ◽  
Environmental Implications ◽  
Question Mark ◽  
Sustainability Issue ◽  
Economic Survey

As per Economic Survey of Punjab, (2019-20), Punjab alone contributed more than 1/4 and 1/3 of the central pool of rice and th rd wheat respectively in 2018-19 and accordingly named as bread-basket of India. However, such a huge contribution was due to the structural transformation of agriculture in Punjab under the Green Revolution. Such transformation leads to intensive use of natural resources with mono-culture of wheat-paddy till today, which put a big question mark on the sustainability issue of agriculture in Punjab. The present study was exclusively based on secondary data, covering the period of 1965-66 to 2018-2019, almost 55 years. Hirschman Herfindhal index and Simpson Diversity index were used to determine the extent of concentration and diversification in the cropping pattern of Punjab agriculture. The results highlight the facts that level of diversification was declining and the level of concentration was increasing. Moreover, Compound Growth Rate (CGR) of yield was either stagnating or declining over the years. Not only this, based on the index of agriculture production, the trend values were negative since the 21 century. Accordingly, st intensive agricultural practices should be stopped, and diversification should get priority in such a way that food security is not jeopardized.

scholarly journals Effects of Plastic Debris on the Biofilm Bacterial Communities in Lake Water

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1465
Author(s):  
Chao Shen ◽  
Liuyan Huang ◽  
Guangwu Xie ◽  
Yulai Wang ◽  
Zongkai Ma ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
Diversity Index ◽  
Plastic Substrate ◽  
Simpson Index ◽  
Plastic Debris ◽  
Plastic Substrates ◽  
Wiener Diversity Index

Increasing discharge of plastic debris into aquatic ecosystems and the worsening ecological risks have received growing attention. Once released, plastic debris could serve as a new substrate for microbes in waters. The complex relationship between plastics and biofilms has aroused great interest. To confirm the hypothesis that the presence of plastic in water affects the composition of biofilm in natural state, in situ biofilm culture experiments were conducted in a lake for 40 days. The diversity of biofilm attached on natural (cobble stones (CS) and wood) and plastic substrates (Polyethylene terephthalate (PET) and Polymethyl methacrylate (PMMA)) were compared, and the community structure and composition were also analyzed. Results from high-throughput sequencing of 16S rRNA showed that the diversity and species richness of biofilm bacterial communities on natural substrate (observed species of 1353~1945, Simpson index of 0.977~0.989 and Shannon–Wiener diversity index of 7.42~8.60) were much higher than those on plastic substrates (observed species of 900~1146, Simpson index of 0.914~0.975 and Shannon–Wiener diversity index of 5.47~6.99). The NMDS analyses were used to confirm the taxonomic significance between different samples, and Anosim (p = 0.001, R = 0.892) and Adonis (p = 0.001, R = 808, F = 11.19) demonstrated that this classification was statistically rigorous. Different dominant bacterial communities were found on plastic and natural substrates. Alphaproteobacterial, Betaproteobacteria and Synechococcophycideae dominated on the plastic substrate, while Gammaproteobacteria, Phycisphaerae and Planctomycetia played the main role on the natural substrates. The bacterial community structure of the two substrates also showed significant difference which is consistent with previous studies using other polymer types. Our results shed light on the fact that plastic debris can serve as a new habitat for biofilm colonization, unlike natural substrates, pathogens and plastic-degrading microorganisms selectively attached to plastic substrates, which affected the bacterial community structure and composition in aquatic environment. This study provided a new insight into understanding the potential impacts of plastics serving as a new habitat for microbial communities in freshwater environments. Future research should focus on the potential impacts of plastic-attached biofilms in various aquatic environments and the whole life cycle of plastics (i.e., from plastic fragments to microplastics) and also microbial flock characteristics using microbial plastics in the natural environment should also be addressed.

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