bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effet des dates de semis sur la performance agronomique de Lagenaria siceraria (Molina) Standl. (Cucurbitaceae) et Manihot esculenta Crantz (Euphorbiaceae) en culture associée
Authors: Bi Irié R. Djè , Kouassi Kouadio I. , Koffi Kouamé K. , Kouakou Kouakou L. , Baudoin Jean-Pierre , Zoro Bi Irié A. 
Published: February 2022

Description du sujet. L’association culturale est une pratique bénéfique largement utilisée dans les zones tropicales pour la gestion durable de la fertilité des sols, l’amélioration des rendements de l’agriculture traditionnelle et des revenus des petits producteurs. Objectifs. Évaluer l’effet de la culture associée et de la culture pure de la cucurbite Lagenaria siceraria, plante lianescente et du manioc Manihot esculenta var. ‘Bonoua blanc’, plante érigée, sur les différentes performances agronomiques de chacune de ces cultures. Méthode. Un dispositif expérimental en blocs complètement randomisés avec trois répétitions par traitement a été mis en place. Les traitements analysés sont, premièrement, des cultures associées M. esculenta var. ‘Bonoua Blanc’/L. siceraria avec les semis de la cucurbite à 0 (CAT0), 15 (CAT15), 30 (CAT30) et 45 (CAT45) jours après la mise en place du manioc ; deuxièmement, des semis de cultures pures de la cucurbite aux mêmes dates que pour les cultures associées (CPT0, CPT15, CPT30 et CPT45) et troisièmement, une plantation de culture pure de manioc à 0 jour (CP). Neuf caractères agronomiques chez la cucurbite et huit chez le manioc ont été analysés. Résultats. Les paramètres agronomiques évalués sont les composantes de rendement du manioc qui varient avec l’augmentation du temps de décalage de semis de la cucurbite. Cependant, les performances de la cucurbite diminuent avec cette augmentation du décalage de semis, que ce soit en culture associée ou en culture pure. Malgré une productivité élevée lorsque la cucurbite est simultanément semée avec le manioc, elle reste faible comparativement à la culture pure de la cucurbite. Conclusions. Dans une association cucurbite Lagenaria siceraria et manioc Manihot esculenta, la production n’est pas bénéfique aux cultures prises individuellement. Cependant, l’utilisation de la cucurbite comme plante de couverture en interculture permet de conserver l’humidité du sol et de gérer les surfaces cultivables et les adventices pour en faire bénéficier le manioc en association.
Effect of temperature on growth and fatty acids profile of the biodiesel producing microalga Scenedesmus acutus
Authors: El-Sheekh Mostafa , Abomohra Abd El-Fatah , El-Azim Metwally Abd , Abou-Shanab Reda 
Published: February 2022

Description of the subject. The present study examined the effect of temperature (15, 20, 25, 30, 35 and 40 °C) on biomass, esterified fatty acids content and fatty acid productivity of Scenedesmus acutus. Objectives. This work aimed to study the effect of variation in temperature on lipid productivity and fatty acid profiles of S. acutus as a feedstock for biodiesel production. Method. The alga was grown under different temperatures and its biomass, as well as fatty acid content and composition, were determined. Results. The maximum growth rate of S. acutus was achieved at 30 °C , but there was no significant difference in biomass productivity at 25 and 30 °C (0.41 and 0.42 g·l-1·d-1), respectively. The highest fatty acid content (104.1 mg·g-1 CDW) was recorded at low temperature (15 °C) and decreased with increasing temperature. As a result of high biomass production, fatty acids productivity showed the highest values (41.27 and 42.10 mg·l-1·d-1) at 25 and 30 °C, respectively. The proportion of saturated and mono-unsaturated fatty acids increased from 13.72 to 23.79% and from 11.13 to 33.10% of total fatty acids when the incubation temperature was raised from 15 to 40 °C, respectively. The increase of temperature from 15 to 40 °C decreased the poly-unsaturated fatty acids from 75.15% to 43.10% of total fatty acids, respectively. Conclusions. The present study concluded that incubation temperature was a critical parameter for quantitative and qualitative fatty acid compositions of S. acutus. In addition, the type and proportion of individual fatty acids, which interfere with biodiesel quality, can be modified using different incubation temperatures in order to meet the biodiesel international standards.
Rôles et caractéristiques morphologiques du ver de terre Eudrilus eugeniae (synthèse bibliographique)
Authors: Byambas Patrick , Lemtiri Aboulkacem , Hornick Jean-Luc , Ndong Toussaint Bengone , Francis Frédéric 
Published: February 2022

Introduction. Eudrilus eugeniae est un ver épigé d’origine africaine. Il est principalement rencontré dans les pays tropicaux et subtropicaux, et est utilisé dans les processus de lombriculture et de lombricompostage. Littérature. Le développement de l’utilisation et de l’exploitation du ver nécessite un approfondissement des connaissances s’y rapportant pour optimiser la production des vers et du lombricompost. Cette synthèse bibliographique a été initiée pour faciliter la valorisation agronomique de l’espèce au Gabon et améliorer les connaissances actuelles sur E. eugeniae. Elle pourrait faciliter l’élaboration d’une clé d’identification spécifique à E. eugeniae, à l’instar de celles qui existent pour d’autres espèces. Conclusions. La synthèse des connaissances disponibles sur le ver de terre E. eugeniae devrait faciliter son exploitation et sa valorisation dans les pays comme le Gabon où l’étude de ce ver de terre est récente.
Comparaison de la dérive pour deux types de pulvérisateurs utilisés en production cotonnière au Bénin
Authors: Gouda Abdoul-Ibrachi , Mehoba Mahodjègbé Hermas Luc , Toko Ibrahim Imorou , Scippo Marie-Louise , Kestemont Patrick , Schiffers Bruno 
Published: February 2022

Description du sujet. L’utilisation accrue des produits phytosanitaires et la variation des substances actives ces dernières années soulèvent des interrogations sur le niveau de pollution de l’environnement et celui des écosystèmes aquatiques du bassin cotonnier en particulier. Objectifs. Des essais ont été menés (à Batran, commune de Banikoara) en conditions pratiques pour quantifier et comparer la dérive engendrée lors des pulvérisations effectuées avec la canne centrifuge et le pulvérisateur à dos, deux appareils spécifiquement utilisés dans le bassin cotonnier au Bénin. Méthode. Une bouillie de tartrazine (un colorant alimentaire) à 20 g·l-1 a été utilisée. Dix essais de pulvérisation à des hauteurs de 1 m et de 1,5 m ont été réalisés suivant un dispositif de collecte préétabli et validé par un essai préalable avec des papiers hydrosensibles. Cinquante-quatre patchs de tissus coton blancs ont été placés à des hauteurs déterminées et à des distances régulières à partir du point d’émission. En fin d’essai, ils ont été récupérés et la concentration en tartrazine (en µg·cm-2) a été déterminée après extraction à l’eau à l’aide d’un colorimètre. À partir des quantités de tartrazine récupérées, les pourcentages de dérive ont été calculés, permettant de comparer la dérive engendrée par chaque appareil. Résultats. Il apparait que, dans les mêmes conditions météorologiques (35° ± 1 °C ; H.R. : 64 ± 4 % ; vent stable d’environ 3 m·s-1), la hauteur de pulvérisation de 1,5 m et la canne de pulvérisation centrifuge engendrent des pourcentages de dérive significativement supérieurs à ceux générés respectivement pour la hauteur de pulvérisation de 1 m et le pulvérisateur à dos. Conclusions. Quel que soit l’appareil, les gouttelettes se dispersent jusqu’à une distance de 16 m.
Bombax costatum (Malvaceae): state of knowns, unknowns and prospects in West Africa
Authors: Assogba Gnido Amandine , Fandohan Adandé Belarmain , Gandji Kisito , Salako Valère Kolawolé , Assogbadjo Achille Ephrem 
Published: February 2022

Introduction. The red kapok tree, Bombax costatum is a tree species native to West Africa. Most of its organs or plant parts are of medicinal, food, and economic importance. Literature. The species is widely used for food and medicinal purposes and as timber. Yet B. costatum is poorly studied and declining across its distribution range. So far, little has been achieved on this species’conservation status, genetic diversity, breeding and domestication. With the aim of synthesizing current knowledge and gaps, and suggesting future research, articles were searched in Google Scholar and Web of Science databases with relevant keywords on B. costatum. All articles found were critically read and analyzed for inclusion in the present review. Conclusions. The current state of knowledge on taxonomy, distribution, ecology, botanical description, structural characteristics, uses, nutritional and phytochemical properties, socioeconomic importance, propagation, growth and development, threats and conservation of B. costatum have been reviewed. Knowledge gaps were identified and research and development avenues were suggested and discussed for conservation of this species.
Evaluation of individual fungal species and their co-culture for degrading a binary mixture of dyes under solid-state fermentation
Authors: Correa Sara Jiménez , Jaramillo Ana Cristina , Merino Rubiel Andrés , Hormaza Angelina 
Published: February 2022

Description of the subject. In recent years, biological methodologies, such as solid-state fermentation, have acquired a great relevance for bioremediation of complex molecules because of their efficiency and low environmental impact. Specifically, the use of white-rot fungi in different biotechnological processes has emerged as a promising strategy given their broad enzymatic potential. Objectives. Evaluation of three individual fungal species, as well as various fungal consortia of these species, for the degradation of a mixture of dyes, brilliant blue – allura red, through solid-state fermentation. Method. The species Pleurotus pulmonarius, Pleurotus ostreatus and Trametes versicolor were assessed, both individually, and in their binary consortia. The interaction between the mycelia of the different white-rot fungi was taken into account as a criterion for using their consortia to degrade the mixture of pollutants under solid conditions. The dyes were adsorbed onto the agro-industrial by-products flower stems and corncob. The fermentative process was carried out over 20 days, after which the degradation percentage was quantified by UV-Vis spectroscopy. Results. The highest degradation percentage was obtained after fermentation by T. versicolor alone. This species reached an average degradation of 79.57% of the binary mixture of dyes, brilliant blue – allura red. Meanwhile, the best consortium, composed of P. ostreatus and T. versicolor, achieved a degradation of 63.24%. Conclusions. These results suggest that the use of fungal consortia, in solid media, does not always lead to a synergy between species for improved dye degradation by the integrated strategy that includes the processes of adsorption and solid-state fermentation. Instead, competition for space and nutrients associated with growth on a solid substrate could decrease the degradation efficiency.
Kontribusi Kecerdasan Emosional Dan Persepsi Sosial Terhadap Interaksi Sosial Mahasiswa Serta Implikasinya Dalam Bimbingan Dan Konseling
Authors: Monalisa Monalisa , Daharnis Daharnis , Syahniar Syahniar 
Published: February 2022

The purpose of this research was obviously to describe: (1) emotional intelligence, (2) social perception, (3) social interaction, (4) the contribution of emotional intelligence, social perceptio, emotional intelligence and social perception towards social interactions. This research was using quantitative method with correlation type. The population was college students’ guidance and counseling program in STKIP PGRI West Sumatera. The research findings shown that: (1) an average of the emotional intelligence of college students at the high category, (2) social perceptions of the college students were in the positive category, (3) college students’ social interaction were in the good category, (4) there was a significant contribution of emotional intelligence toward social interaction, (5) there was a significant contribution of social perception toward social interaction, and (6) there were together a significant contribution of emotional intelligence and social perception toward social interaction.
Preferential Habitat of Orange Footed Scrubfowl (Megapodius reindwardt) at Nature Tourism Park of Mount Tunak, Lombok Tengah Regency, Nusa Tenggara Barat Province
Authors: Oktovianus Oktovianus , Aerief Harnios , Hikmat Agus , Hernowo Jarwadi B. , Hermawan Rachmad 
Published: February 2022

Orange Footed Scrubfowl (Megapodius reindwart Dumont 1823) is classified as protected bird based on the Preservation of Plant and Animal Species of Ministry of Enviromental and Forestry Decree No. 92/2018. As a natural park, TWA of Gunung Tunak serves as a natural conservation area (NCA) which has a basic function as a conservation area designated as a recreation area and nature tourism. Associated with its function then TWA of Gunung Tunak has an important role in supporting the conservation of wild animals especially Orange Footed Scrubfowl and the implementation of recreational activities and natural tourism in a sustainable manner. The objectives of this study were to analysis the preferential habitats of Orange Footed Scrubfowl. Based on the results of multiple linear regression analysis of stepwise method, it can be known that dominant factors to the frequency of presence of Orange Footed Scrubfowl in a selected habitat are the number of predators, the distance from water source, soil texture, and altitude of place with the equation Y = 3.390.96 + 2.28X11 + 0.00084X5 - 0.0117X10 - 0.0034X3. Based on the results of preference index analysis with Neu method, it can be seen that the preferred area of Orange Footed Scrubfowl is only in Block I (w ≥ 1) namely the forest area near Teluk Ujung Coast. Based on the place altitude, the existence of the mound of nest from the sea surface, the Orange Footed Scrubfowl prefer the area at an altitude of 0-25 m above sea level. Keywords: Megapodius reindwart, Nature Tourism Park of Mount Tunak, orange footed scrubfowl, preferential habitat
Economic Value of non-Timber Forest Product Utilization at Padali Resort, Ujung Kulon National Park
Authors: Mahendra Gusti , Arief Harnios , Sunarminto Tutut 
Published: February 2022

The National park has a supporting function in order to improve the society's welfare and their quality of life. One of the activities that can be carried out to support this function is the utilization of the potential of non-timber forest products. This research aims to identify the type and economic value of NTFP utilization at the Padali Resort in Ujung Kulon National Park. This research was carried out at TNUK Padali Resort and the village which guided under of the Paduk TNUK Resort in March to April 2018. The methods used were literature studies, interviews and field observations. Analysis of the data used is descriptive and quantitative analysis to calculate the economic value of NTFP utilization through a market price approach. The types of NTFPs used by the community consist of 8 types, namely sugar palm, bamboo, durian, dogfruit, coconut, mangosteen, melinjo and stink bean with a total economic value of Rp. 262,460,702.25 / year. The majority of NTFPs (62.62%) utilized by the community are for commercial purposes. Padasuka Village has the greatest dependence on NTFPs in the Padali Resort area with a percentage of 50% of the total economic value of NTFP utilization at Padali Resort TNUK. Keywords: buffer zone communities, economic value, non timber forest product, utilization
The EFFECTS OF CAJUPUT AND CITRONELLA GRASS AS HOST PLANTS ON SANDALWOOD GROWTH
Authors: Tefnai Joni , Mansur Irdika , Wijayanto Nurheni 
Published: February 2022

Sandalwood (S. album) is native species in eastern Indonesia, especially East Nusa Tenggara (NTT). Its species can produce essential oils and have been known to foreign countries. However, the community's interest in planting sandalwood is low due to a lack of knowledge regarding cultivation techniques and a long harvest period. The purpose of this study was to assess the growth of sandalwood (S. album) with cajuput (M. cajuputi) citronella grass (C. nardus) as the host plant. The research was conducted in Fatunisuan Village, Miomaffo Barat Subdistrict, TTU Regency using a completely randomized design (RAL) of 4 treatments and 3 replications, namely sandalwood without a host (K), sandalwood with cajuput host (CKP), sandalwood with citronella grass as the host plant (CSW), and sandalwood with cajuput and citronella grass as host plants (CKPSW). Data analysis used variance at 95% confidence level. Analysis of variance, which showed that the treatment had a significant effect, was further tested using the Duncan Multiple Range Test (DMRT) at the 5% level. The results showed that the mixed system using two types of hosts, namely lemon grass, cajuput or both, significantly increased the growth of sandalwood in the field. The CKPSW treatment gave the highest percentage increase in sandalwood growth compared to other treatments.
Key words: cajuput host, citronella grass host, RAL, sandalwood
ASSOCIATION BETWEEN DOMINANT TREES SPECIES IN LOWLAND TROPICAL FOREST (EDUCATION FOREST OF JAMBI UNIVERSITY)
Authors: Nursanti Nursanti , Hardiyanti Rizky Ayu , Adriadi Ade 
Published: February 2022

Lowland forest vegetation can still be found on the Jambi University Campus, namely at the Jambi Mendalo University Educational Forest (HPUJM). Jambi University Educational Forest is administratively located in Mendalo Indah Village, Jambi Luar Kota District, Muaro Jambi Regency, Jambi Province. Vegetation communities are formed by the presence and interaction of the various types of plants that compose them. The form of interaction between plant species in a community is called an association. Associations can be in the form of positive associations and negative associations. This research was conducted to know the association between dominant tree species. This study used a purposive sampling method by determining a sampling area of ​​9600 m2 or 0.96 ha measuring 160m x 60m, divided into 24 sub-plots, each measuring 20m x 20m. Species having an Importance Value Index (IVI) of ≥ 10% were used as the association analysis. The 2x2 contingency table was used to analyze whether or not associations were present between tree species. The results showed, of 15 dominant tree combinations, there were only 4 associated combinations, namely the association between Aporosa lucida and Vitex pinnata, the association between Endospermum diadenum and V.pinnata, the association of Litsea ferruginea with Gironniera diadenum, the association of L. ferruginea with V.pinnata.
Key words: association, dominant tree, lowland forest
ANALISIS STRUCTURE, CONDUCT, PERFORMANCE (SCP) BUAH PEPAYA CALIFORNIA (Carica papaya L.) DI PASAR TRADISIONAL KOTA BOGOR
Authors: Marfuah Zuher Vigia , Yoesdiarti Arti , Miftah Himmatul 
Published: February 2022

Pepaya California merupakan buah yang banyak disukai oleh masyarakat Kota Bogor sehingga keberlanjutan pasokannya sangat diperlukan. Kinerja pasokan diantaranya dilakukan melalui analisis Structure Conduct Performance pelaku pemasaran. Penelitian ini bertujuan untuk menganalisis stuktur, perilaku, kinerja pasar dan risiko rantai pasok beserta mitigasinya. Data yang diambil adalah data primer melalui wawancara langsung dengan bantuan kuisioner dan observasi. Data sekunder diperoleh dari literatur. Hasil penelitian menunjukan struktur pasar yang terbentuk ditingkat pedagang pengumpul desa dan pedagang besar adalah monopolistik dan ditingkat pedagang pengecer oligopoli. Lembaga pemasaran yang terlibat lemah dalam penentuan harga. Terdapat empat saluran pemasaran yang terbentuk. Saluran I Pedagang pengumpul desa Jember-pedagang besar Kramat Jati-pedagang pengecer Pasar Tradisional Kota Bogor - konsumen akhir, saluran II Pedagang pengumpul desa Malang - pedagang besar Kramat Jati - pedagang pengecer Pasar Tradisional Kota Bogor - konsumen akhir, saluran III Pedagang pengumpul desa Cianjur – pedagang besar kramat jati – pedagang pengecer Pasar Tradisional Kota Bogor – konsumen akhir dan saluran IV Pedagang pengumpul desa Sukabumi – pedagang pengecer Pasar Tradisional Kota Bogor – konsumen akhir. Nilai marjin pemasaran dan farmer’s share pada analisis kinerja pasar menunjukan saluran pemasaran III merupakan saluran yang memiliki marjin pemasaran terendah yaitu Rp. 5.500,00 dan farmer’s share paling tinggi yaitu 45%.
Kata Kunci : Farmer’s share, pepaya California, structure conduct performance, Pasar tradisional Bogor
PENGARUH VARIASI KADAR SERAT DAN RASIO PANJANG TERHADAP DIAMETER (L/D) SERAT PELEPAH SAWIT TERHADAP KUAT TEKAN DAN KUAT TARIK BELAH BETON SERAT
Authors: Saputra Haryadi , Sahay Liliana , Frieda Frieda 
Published: February 2022

Beton salah satu material konturuksi mampu memikul beban tekan, tetapi lemah dalam menerima beban tarik. Hal ini menyebabkan beton bersifat getas dan dapat. mengakibatkan keruntuhan mendadak sehingga serat digunakan pada beton. Tetapi bukan berarti beton tidak mengalami keruntuhan tarik. Dengan penambahan serat pelepah kelapa sawit yang merupakan bahan lokal, diharapkan dapat memperbaiki kelemahan beton. Variasi kadar atau presentase serat kelapa sawit yang ditambahkan ke dalam campuran beton adalah sebesar 1%, 1,5% dan 2% dari total berat semen beton silinder. Hasil Penelitian kuat tekan, penambahan dan semakin besar l/d serat pelepah kelapa sawit tidak memberikan pengaruh yang signifikan terhadap peningkatan kuat tekan, kuat tekan tertinggi di peroleh pada rasio l/d = 50 dengan kadar serat 1% dengan nilai kuat tekan sebesar 14,33 MPa. Pada Pengujian kuat tarik belah beton tertinggi pada kadar serat 1% dengan rasio l/d = 50 nilai kuat tarik yang dihasilkan sebesar 2,10 MPa pada umur 7 hari. Kata kunci: beton serat, kuat tekan, pelepah kelapa sawit, kuat tarik belah
PENGARUH PENAMBAHAN AIR TERHADAP KUAT GESER DAN DAYA DUKUNG TANAH LEMPUNG
Authors: Kurnia Ditha , Sarie Fatma , Gandi Suradji 
Published: February 2022

Semua beban konstruksi seperti jalan dan gedung diteruskan ke dalam tanah, sehingga kuat daya dukung tanah sangat berperan penting untuk mendirikan sebuah konstruksi diatasnya. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penggunaan air terhadap kuat geser dan daya dukung tanah lempung. Dalam penelitian ini menggunakan metode eksperimental, dan analitikal. Dari hasil pengujian kuat geser langsung (Direct Shear) terhadap nilai kuat geser dan daya dukung tanah asli yang dikeringkan 6 jam didapat nilai kuat geser (τ) tertinggi 0,288 kg/cm2, sudut geser 25˚, kohesi (c) 0,230 kg/cm2, dengan persentase sebesar 13,83% sedangkan untuk nilai daya dukung tanah didapat nilai qult = 6,94 kg/cm2, dan nilai qijin = 2,31 kg/cm2. Setelah penambahan pada campuran tanah asli + 5% air didapat nilai kuat geser (τ) sebesar 0,198 kg/cm2, sudut geser 19˚, kohesi (c) 0,150 kg/cm2 sedangkan untuk nilai daya dukung tanah didapat nilai qult = 3,64 kg/cm2, dan nilai qijin = 1,21 kg/cm2. Sehingga dapat disimpulkan bahwa dengan penambahan air memberikan pengaruh terhadap nilai kuat geser dan daya dukung pada tanah lempung. Kata Kunci: Kuat Geser, Daya Dukung, Tanah Lempung