Open Journal of Agricultural Research最新文献

Health condition of palm trees of Mexico City, with an emphasis on “crowns” 墨西哥城棕榈树的健康状况，重点是“树冠”

Open Journal of Agricultural Research Pub Date : 2023-07-06 DOI: 10.31586/ojar.2023.690

L. D. L. Saavedra-Romero, Dionicio Alvarado-Rosales, A. Almaraz-Sánchez, A. Quezada-Salinas, Silvia Edith García-Díaz, S. Aranda-Ocampo, C. Ortíz-García, A. Equihua-Martínez, J. López-Buenfil

引用次数: 0

Response of Three Cucumber Cultivars to the Application of Sulphate of Ammonia as top Dressing with Respect to Fruit Yield and Shelf Life 施用硫酸铵追肥对3个黄瓜品种果实产量和保质期的影响

Open Journal of Agricultural Research Pub Date : 2023-02-20 DOI: 10.31586/ojar.2023.629

Yakubu Jacob Fuseini, Alhassan Nurideen

引用次数: 0

Effect of Rainfall on Yield Related Traits and Total Carotenoids Contents of 42 Accessions of Provitamin A Cassava at Two Cropping Seasons in Ibadan 降雨对伊巴丹地区42份维生素A原木薯产量相关性状及总类胡萝卜素含量的影响

Open Journal of Agricultural Research Pub Date : 2022-07-02 DOI: 10.31586/ojar.2022.314

Olusegun David Badewa Elizabeth Parkes, E. Tsado, A. Gana, K. D. Tolorunse, P. Akpotuzor, P. Iluebbey, T. Ayankanmi

引用次数: 0

Study for Some Body Weight and Egg Traits in Domyati and Khaki-Campbell Ducks 多米提鸭和卡其坎贝尔鸭部分体重和蛋性状的研究

Open Journal of Agricultural Research Pub Date : 2022-05-10 DOI: 10.31586/ojar.2022.260

A. EL-Deghadi, W. Ali, M. Gharib

引用次数: 2

Floristic composition and structure in the undergrowth of agroforests in Neems in the Far North region (Cameroon) 喀麦隆远北地区尼姆斯混交林林下植物区系组成及结构

Open Journal of Agricultural Research Pub Date : 2022-03-26 DOI: 10.31586/ojar.2022.154

Witanou Nathalie, Noiha Noumi Valery, Mapongmetsem Pierre Marie

引用次数: 0

COVID-19 and the Non-Repayment of Agricultural Loans in West Cameroon: A major Challenge for the Small Farmer in an Individual Loan Situation 2019冠状病毒病和喀麦隆西部农业贷款无法偿还:个人贷款情况下小农面临的重大挑战

Open Journal of Agricultural Research Pub Date : 2022-01-29 DOI: 10.31586/ojar.2022.181

Yannick Tamo Fogué, I. Manu

{"title":"COVID-19 and the Non-Repayment of Agricultural Loans in West Cameroon: A major Challenge for the Small Farmer in an Individual Loan Situation","authors":"Yannick Tamo Fogué, I. Manu","doi":"10.31586/ojar.2022.181","DOIUrl":"https://doi.org/10.31586/ojar.2022.181","url":null,"abstract":": This study raises the problem of the non-repayment of agricultural credits by producers who are members of the Community Growth Mutual (MC 2 ), in this period of COVID-19. It questions the economic mores in force in most member countries of the Organization for the Harmonization of Business Law in Africa (OHADA), where credit has become difficult for small rural farmers; And refers to the theory of the vicious circle of poverty, which advocates an indispensable recourse to foreign capital in the event of financial breakdown, as a means of increasing capital. Since the capital of rural producers remains insufficient and their possibility of reinvestment decreases, then becomes zero because of agricultural credit. To understand the factors of the non-repayment of these credits, data were collected from 100 agro-sylvo-pastoral producers of the Bayangam group (West-Came-roon) of both sexes, aged at least 18 years, having obtained an unpaid credit from the MC 2 since 2019, and a manager of this microfinance institution. After analysis, it appears that beyond over-production and anti-COVID-19 measures that lead to the missale or fall in prices on the market, the conditions of access to credit, the non-possession of acceptable guarantees, the misuse of the object of credit and the practice of financial cavalry by the borrower, as well as the rigidity of the procedures for prosecuting debtors significantly explain this non-repayment. It is associated with determinants such as age, of agricultural activity of the debtor. Hence the need for flexibility of microfinance institutions vis-à-vis rural agro-sylvo-pastoral producers, who are severely affected by the economic shock of the COVID-19.","PeriodicalId":159917,"journal":{"name":"Open Journal of Agricultural Research","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129418614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Cultivation Trial of an Edible and Medicinal Mushroom Species, Pleurotus Tuber-regium (Rumph. ex Fr.) Singer 1951 (strain 190212) on Various Lignocellulosic Substrates 一种食药用菌——平菇的栽培试验。前Fr.)辛格1951(菌株190212)在各种木质纤维素基质

Open Journal of Agricultural Research Pub Date : 2021-10-24 DOI: 10.31586/ojar.2021.150

Batubenga Roger, Lukoki Luyeye Felicien, Bongo Ngiala Gédéon, Iteku Bekomo Jeff, Kanika Kileshe Daddy, Mwambay Kinyani Esther, Dibaluka Mpulusu Simon

{"title":"Cultivation Trial of an Edible and Medicinal Mushroom Species, Pleurotus Tuber-regium (Rumph. ex Fr.) Singer 1951 (strain 190212) on Various Lignocellulosic Substrates","authors":"Batubenga Roger, Lukoki Luyeye Felicien, Bongo Ngiala Gédéon, Iteku Bekomo Jeff, Kanika Kileshe Daddy, Mwambay Kinyani Esther, Dibaluka Mpulusu Simon","doi":"10.31586/ojar.2021.150","DOIUrl":"https://doi.org/10.31586/ojar.2021.150","url":null,"abstract":": In Central Africa, mushrooms are critically important non-timber forest products (NTFPs), both nutritionally and economically. A strain of edible and medicinal lignicolous fungus, Pleurotus tuber-regium (Rumph. ex Fr.) Singer 1951 (strain 190212), isolated from tissue (sclerotia), on PDA medium, was tested on corn grain and sawdust seedling substrates and on palm oil male inflorescence ( Elaeis guineensis Jacq.), ground corn ( Zea mays L) stalks and grass ( Paspalum notatum L) soaked for 24 hrs then drained for 24 hours, and unsoaked ground corn ( Zea mays L) stalks. The highest mycelial growth rate recorded was about 0.9 cm on the PDA medium; 5.97 cm on the corn-based seedling medium and 11.95 cm on the sawdust-based seedling medium. Total mycelial invasion on the PDA medium was observed on day 10, day 14 on the corn-based seedling medium, and day 24 on the sawdust-based seedling medium. The onset of mycelial invasion was noticeable on day 3 of seeding for all treatments T 0 (control), T 1 (Final substrate based on soaked ground corn stalks), T 2 (Final substrate based on unsoaked ground corn stalks), and T 3 (Final substrate based on turf). Total invasion of mycelium was obtained at day 15 of incubation for treatments T 1 and T 2 , at day 18 for treatment T3 and at day 24 for treatment T0. The results obtained on treatments T 1 and T 2 respectively (14.95±3.12% and 15.65±1.06%) of the maize stalk substrate, lead us to believe that the strain 190212 of Pleurotus tuber-regium species used has adapted and requires an improvement of the medium with nitrogen-rich additives such as soybean meal. This could achieve the theoretical yield of 20% or more, according to which a substrate can be considered better in producing sporophores.","PeriodicalId":159917,"journal":{"name":"Open Journal of Agricultural Research","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131725771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Root Distribution of Four Tree Species Planted in Living Hedges according to Two Types of Soil and Three Agroforestry Technologies in the Sudano-Sahelian Zone of Cameroon 喀麦隆苏丹-萨赫勒地区两种土壤和三种农林复合技术种植的四种树的根系分布

Open Journal of Agricultural Research Pub Date : 2021-09-25 DOI: 10.31586/ojar.2021.138

Djongmo Victor Awé, Noumi Valery Noiha, B. T. A. Vroh, L. Zapfack

{"title":"Root Distribution of Four Tree Species Planted in Living Hedges according to Two Types of Soil and Three Agroforestry Technologies in the Sudano-Sahelian Zone of Cameroon","authors":"Djongmo Victor Awé, Noumi Valery Noiha, B. T. A. Vroh, L. Zapfack","doi":"10.31586/ojar.2021.138","DOIUrl":"https://doi.org/10.31586/ojar.2021.138","url":null,"abstract":": In the agroforestry systems of sub-Saharan Africa, the vertical and horizontal distribution of tree root biomass according to the soil profile is still poorly documented. The objective of this study is to verify the root distribution of four species of trees established in living hedges, namely, Commiphora kerstingii, Erythrina sigmoidea, Ficus thonningii and Jatropha curcas according to two types of soil (light soil and heavy soil) and three agroforestry technologies (fallows, wooded parks and plantations). The hedges were mostly monospecific in order to facilitate the identification of the roots. The experimental set-up is an entirely random factorial design with two factors. The evalua-tion of the distribution of tree roots was carried out using the profile method. To determine the different textural classes, a particle size analysis was undertaken in the laboratory. The results obtained show that the number of roots decreases rapidly after 30 cm of depth. The highest root densities are observed in the first 30 cm. Soil type has a slight effect (p <0.05) on rooting density in the last 30 cm of depth for all root classes, higher densities were obtained in light soil compared to heavy soil. Commiphora kerstingii stands out significantly by obtaining a higher number of roots than the other species for all classes. Among the technologies, the plantations showed the lowest root density at 0-5 cm and the highest at 55-60 cm. The root density was higher in the fallows. The results show that the root system is mainly concentrated near the stump.","PeriodicalId":159917,"journal":{"name":"Open Journal of Agricultural Research","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125460277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Genetic Evaluation of Growth Traits in New Synthetic Rabbit Line in Egypt 埃及合成兔新品系生长性状的遗传评价

Open Journal of Agricultural Research Pub Date : 2021-09-17 DOI: 10.31586/ojar.2021.119

El-Sayed M Abdel-Kafy, Amira S. El-Deighadi, Hoda M. Shabaan, Wael H. A. Ali, Zain El-Abdeen A. Sabra, A. Farid

{"title":"Genetic Evaluation of Growth Traits in New Synthetic Rabbit Line in Egypt","authors":"El-Sayed M Abdel-Kafy, Amira S. El-Deighadi, Hoda M. Shabaan, Wael H. A. Ali, Zain El-Abdeen A. Sabra, A. Farid","doi":"10.31586/ojar.2021.119","DOIUrl":"https://doi.org/10.31586/ojar.2021.119","url":null,"abstract":": Native Middle Egypt Rabbit breed (NMER) was crossbred with Gaint Flander rabbits to create a synthetic line. This study was aimed to evaluate the genetic estimates of this synthetic line with comparing to the purebreds. A crossbreeding was carried out by mating bucks of Gaint Flander (G) with does of NMER (N) to get F1 (½ N½ G), then does and bucks of F1 were mated to get F2 (½ N½ G)2, followed by two generations of inter se-mating to get a new synthetic line is called Egy-line with a genetic structure of ((½ N½ G)2)2. Heritability estimates for body weights were generally moderate and ranged from 0.10 to 0.24, while the estimates of heritability for growth rate were low and moderate and ranging from 0.01 to 0.23. Common little effects of body weight were large as weaning (0.61), then declined gradually as the rabbit grew older. Also, the same trends were observed for relative growth rate (RGR). The direct additive effects were positive and highly significant for all body weights at different ages, favoring Gaint Flander and heavier comparing with NMER rabbits. Most relative growth rates during different intervals were non-significant. Gaint Flander was highly significant a nd heavier in maternal additive effects it in different weeks of age comparing with NMER rabbits. Direct heterosis effect for most bodyweight was positive and highly significant, and percentages of direct heterosis increased generally with the advance of age. Maternal heterosis for growth rates from 5 to 6, 8 to 10, and 10 to 12 week was positive, only. Direct recombination effects for most bodyweight were positive and highly significantly exclude weight at 5 and 6 weeks. It is concluded that a new synesthetic line (Egy-line) has proven its superiority and performance well in all different body weights and most growth rates compared to other parents and crossbreds.","PeriodicalId":159917,"journal":{"name":"Open Journal of Agricultural Research","volume":"423 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115259505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Biodiversity Management under Cashew Agro-ecosystems in Central Africa: A case study from Cameroon 中非腰果农业生态系统下的生物多样性管理:以喀麦隆为例

Open Journal of Agricultural Research Pub Date : 2021-09-16 DOI: 10.31586/ojar.2021.130

Djongmo Victor Awé, Noumi Valery Noiha, B. T. A. Vroh, L. Zapfack

{"title":"Biodiversity Management under Cashew Agro-ecosystems in Central Africa: A case study from Cameroon","authors":"Djongmo Victor Awé, Noumi Valery Noiha, B. T. A. Vroh, L. Zapfack","doi":"10.31586/ojar.2021.130","DOIUrl":"https://doi.org/10.31586/ojar.2021.130","url":null,"abstract":": This study aimed to assess the floristic composition, vegetation structure and species associations of Cashew agro-ecosystems in the North region of Cameroon. The data were collected in 100 m x 20 m transect methods. An analysis of the data collected in the field was conducted around the diversity and richness of the flora, but also the structure of Cashew agro-ecosystems. For the analyzes of vegetation structure, tree density, basal area and biovolume were calculated. The inventory included trees with a dbh greater than or equal to 5 cm on an area of 1 ha per plot. The experimental device installed is a complete random Fisher block with five repetitions. A total of 7849 individuals in 17 families, 20 genera and 38 species were recorded . Species Important value of vegetation cover indicated that Diospyros mespiliformis, Anogeissus leiocarpus, Annona senegalensis and Terminalia laxiflora are the most represented. Combretaceae are the most ecologically important families. Additionally, the grouping of species into four subdivisions showed that the Shannon diversity index varies from 2.18 ± 0.09 - 3.47 ± 0.17 bits, Pielou index vary from 0.98 ± 0.01 - 0.99 ± 0.01, Simpson's index ranges from 0.70 ± 0.18 - 0.93 ± 0.11, density ranges from 102 ± 1.92 - 128 ± 6.36 indiv/ha, basal area ranges from 2.02 ± 0.31 - 12.68 ± 2.01 m²/ha, biovolume ranges from 11.58 ± 1.29 - 68.03 ± 13.21 m 3 /ha. The Sörensen similarity index is very high with floristic affinities greater than or equal to 90%. The diameters and heights structure show a predominance of young individuals for the diameter and height classes on all plots. The most represented species associations are legumes ( Arachis hypogeae : 40.54%) and native fruit trees ( Vitellaria paradoxa : 15%). These results show the contribution of Cashew agro-ecosystems in biodiversity conservation.","PeriodicalId":159917,"journal":{"name":"Open Journal of Agricultural Research","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132488698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1