Subjects -> AGRICULTURE (Total: 963 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (662 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
    - DAIRYING AND DAIRY PRODUCTS (30 journals)
    - POULTRY AND LIVESTOCK (58 journals)

AGRICULTURE (662 journals)            First | 1 2 3 4     

Showing 201 - 263 of 263 Journals sorted by number of followers
Biodiversity     Hybrid Journal   (Followers: 28)
Agriculture & Food Security     Open Access   (Followers: 22)
Future of Food : Journal on Food, Agriculture and Society     Open Access   (Followers: 21)
Nature Plants     Full-text available via subscription   (Followers: 17)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 17)
Advances in Agriculture     Open Access   (Followers: 16)
Agricultural History Review     Full-text available via subscription   (Followers: 15)
Indian Journal of Agricultural Sciences     Open Access   (Followers: 12)
Advances in Life Science and Technology     Open Access   (Followers: 11)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Journal of Land and Rural Studies     Hybrid Journal   (Followers: 11)
Agriculture and Food Sciences Research     Open Access   (Followers: 10)
Agricultural Research     Hybrid Journal   (Followers: 10)
Indian Horticulture     Full-text available via subscription   (Followers: 9)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 8)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 7)
Aceh International Journal of Science and Technology     Open Access   (Followers: 7)
International Journal of Agriculture and Forestry     Open Access   (Followers: 7)
New Journal of Botany     Hybrid Journal   (Followers: 6)
Invertebrate Reproduction & Development     Hybrid Journal   (Followers: 6)
Journal of Agriculture and Sustainability     Open Access   (Followers: 6)
Journal of Agriculture and Social Research (JASR)     Open Access   (Followers: 6)
American Journal of Rural Development     Open Access   (Followers: 6)
Journal of Agriculture, Forestry and the Social Sciences     Full-text available via subscription   (Followers: 6)
Journal of Advances in Agriculture     Open Access   (Followers: 5)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 5)
EvoDevo     Open Access   (Followers: 5)
Italian Journal of Agronomy     Open Access   (Followers: 4)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Journal of Agricultural Science     Open Access   (Followers: 4)
Journal of Agriculture and Rural Development in the Tropics and Subtropics     Open Access   (Followers: 4)
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Journal of Modern Agriculture     Open Access   (Followers: 4)
EU Agrarian Law     Open Access   (Followers: 4)
Journal of Agricultural Extension and Rural Development     Open Access   (Followers: 4)
Acta Agrobotanica     Open Access   (Followers: 4)
Food and Energy Security     Open Access   (Followers: 4)
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of Agriculture and Natural Resources Sciences     Open Access   (Followers: 3)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 3)
Revista Verde de Agroecologia e Desenvolvimento Sustentável     Open Access   (Followers: 3)
Sustainable Agriculture Research     Open Access   (Followers: 3)
International Journal of Agricultural Research, Innovation and Technology     Open Access   (Followers: 3)
International Journal of Applied Agriculture and Apiculture Research     Open Access   (Followers: 3)
Agra Europe     Full-text available via subscription   (Followers: 3)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 3)
Diatom Research     Hybrid Journal   (Followers: 3)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 3)
Journal of Food Security     Open Access   (Followers: 3)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 3)
Rural China     Hybrid Journal   (Followers: 2)
Revista Cubana de Ciencia Agrícola     Open Access   (Followers: 2)
Rivista di Studi sulla Sostenibilità     Full-text available via subscription   (Followers: 2)
Nigerian Food Journal     Full-text available via subscription   (Followers: 2)
Tropical Agricultural Research     Open Access   (Followers: 2)
International Journal of Agricultural Management and Development     Open Access   (Followers: 2)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
New Zealand Journal of Agricultural Research     Hybrid Journal   (Followers: 2)
International Journal for Parasitology : Parasites and Wildlife     Open Access   (Followers: 2)
Journal of Apicultural Science     Open Access   (Followers: 2)
Ciencia forestal en México     Open Access   (Followers: 2)
Agricultura Tropica et Subtropica     Open Access   (Followers: 2)
Journal of Biology, Agriculture and Healthcare     Open Access   (Followers: 2)
Journal of Sustainable Society     Open Access   (Followers: 2)
Journal of Agricultural Extension     Open Access   (Followers: 2)
Journal of Agriculture and Food Sciences     Full-text available via subscription   (Followers: 2)
Journal of Agricultural Engineering     Open Access   (Followers: 2)
Huria : Journal of the Open University of Tanzania     Full-text available via subscription   (Followers: 2)
Agro-Science     Full-text available via subscription   (Followers: 2)
Rural Sustainability Research     Open Access   (Followers: 2)
Ghana Journal of Agricultural Science     Full-text available via subscription   (Followers: 2)
Journal of Agricultural Studies     Open Access   (Followers: 1)
Berkala Ilmiah Pertanian     Open Access   (Followers: 1)
Journal of Natural Sciences Research     Open Access   (Followers: 1)
Agricultural Commodities     Full-text available via subscription   (Followers: 1)
Progressive Agriculture     Open Access   (Followers: 1)
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Jurnal Veteriner     Open Access   (Followers: 1)
Nigerian Journal of Technological Research     Full-text available via subscription   (Followers: 1)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Revista Brasileira de Higiene e Sanidade Animal     Open Access   (Followers: 1)
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access   (Followers: 1)
Archivos de Zootecnia     Open Access   (Followers: 1)
Folia Horticulturae     Open Access   (Followers: 1)
Acta Technologica Agriculturae     Open Access   (Followers: 1)
International Journal of Agricultural Extension     Open Access   (Followers: 1)
Frontiers in Science     Open Access   (Followers: 1)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 1)
Research in Agriculture, Livestock and Fisheries     Open Access   (Followers: 1)
Journal of Agricultural Engineering     Full-text available via subscription   (Followers: 1)
Buletin Peternakan : Bulletin of Animal Science     Open Access   (Followers: 1)
RIA. Revista de Investigaciones Agropecuarias     Open Access   (Followers: 1)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access   (Followers: 1)
Journal of Degraded and Mining Lands Management     Open Access   (Followers: 1)
Global Approaches to Extension Practice : A Journal of Agricultural Extension     Full-text available via subscription   (Followers: 1)
Plant Knowledge Journal     Open Access   (Followers: 1)
Iranian Journal of Applied Animal Science     Open Access   (Followers: 1)
Agrociencia Uruguay     Open Access   (Followers: 1)
Chemical and Biological Technologies for Agriculture     Open Access   (Followers: 1)
International Journal of Recycling of Organic Waste in Agriculture     Open Access   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Annals of Agricultural Sciences     Open Access   (Followers: 1)
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
International Journal of Sustainable Agricultural Management and Informatics     Hybrid Journal   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 1)
Journal of Agricultural Sciences     Open Access   (Followers: 1)
Jurnal Ilmu dan Kesehatan Hewan (Veterinary Science and Medicine Journal)     Open Access   (Followers: 1)
Innovare Journal of Agricultural Science     Open Access   (Followers: 1)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Social and Natural Sciences Journal     Open Access  
Jurnal Agroteknologi     Open Access  
Perspectivas Rurales Nueva Época     Open Access  
Organic Farming     Open Access  
Research Ideas and Outcomes     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Landtechnik : Agricultural Engineering     Open Access  
International Letters of Natural Sciences     Open Access  
International Journal of Agriculture System     Open Access  
Heliyon     Open Access  
Ciência e Técnica Vitivinícola     Open Access  
Oilseeds and fats, Crops and Lipids     Open Access  
Annals of Silvicultural Research     Open Access  
Pastura : Journal Of Tropical Forage Science     Open Access  
Journal of Citrus Pathology     Open Access  
Revista Iberoamericana de las Ciencias Biológicas y Agropecuarias     Open Access  
Kansas Agricultural Experiment Station Research Reports     Open Access  
International Journal of Secondary Metabolite     Open Access  
Scientia Agropecuaria     Open Access  
Pelita Perkebunan (Coffee and Cocoa Research Journal)     Open Access  
Revista de Agricultura Neotropical     Open Access  
Cogent Food & Agriculture     Open Access  
Fave : Sección ciencias agrarias     Open Access  
Revista de Ciências Agrárias     Open Access  
Review of Agrarian Studies     Open Access  
Nigerian Journal of Biotechnology     Open Access  
Nigeria Agricultural Journal     Full-text available via subscription  
Annales des Sciences Agronomiques     Full-text available via subscription  
Journal of the Bangladesh Agricultural University     Open Access  
Journal of Buffalo Science     Hybrid Journal  
Revista de Ciências Agroveterinárias     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Research in Plant Sciences     Open Access  
World Journal of Agricultural Research     Open Access  
Universal Journal of Agricultural Research     Open Access  
Research & Reviews : Journal of Agriculture Science and Technology     Full-text available via subscription  
Revue Marocaine des Sciences Agronomiques et Vétérinaires     Open Access  
Nativa     Open Access  
SAARC Journal of Agriculture     Open Access  
West African Journal of Applied Ecology     Open Access  
Journal of Agricultural Research and Development     Full-text available via subscription  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Global Journal of Agricultural Sciences     Full-text available via subscription  
Agrosearch     Open Access  
Agronomie Africaine     Full-text available via subscription  
Professional Agricultural Workers Journal     Open Access  
Interciencia     Open Access  
Nepal Journal of Science and Technology     Open Access  
Journal of the Saudi Society of Agricultural Sciences     Open Access  
Information Processing in Agriculture     Open Access  
Sabaragamuwa University Journal     Open Access  
Ceiba     Open Access  
Research in Sierra Leone Studies : Weave     Open Access  
The Agriculturists     Open Access  
La Calera     Open Access  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Revista de la Universidad del Zulia     Open Access  
Journal of Arid Land     Hybrid Journal  
Rangifer     Open Access  
Encuentro     Open Access  
Journal Of Agrobiotechnology     Open Access  
Coffee Science     Open Access  
Bangladesh Journal of Scientific Research     Open Access  
Landbohistorisk Tidsskrift     Open Access  
Biotecnología en el Sector Agropecuario y Agroindustrial     Open Access  
Walailak Journal of Science and Technology     Open Access  
Universidad y Ciencia     Open Access  
Tropical and Subtropical Agroecosystems     Open Access  
Terra Latinoamericana     Open Access  
Revista Iberoamericana de Tecnologia Postcosecha     Open Access  
Revista Brasileira de Ciências Agrárias     Open Access  
Multiciencias     Open Access  
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Bioagro     Open Access  
Agroalimentaria     Open Access  
Revista Mexicana de Ciencias Agrícolas     Open Access  
Revista U.D.C.A Actualidad & Divulgación Científica     Open Access  
Revista Ciencias Técnicas Agropecuarias     Open Access  
Revista Chapingo. Serie horticultura     Open Access  
Pastos y Forrajes     Open Access  
Fitosanidad     Open Access  
Cultivos Tropicales     Open Access  
Cuadernos de Desarrollo Rural     Open Access  
Ciencia e Investigación Agraria     Open Access  
Agronomía Mesoamericana     Open Access  
Agronomía Costarricense     Open Access  
Agrociencia     Open Access  
Agrivita : Journal of Agricultural Science     Open Access  

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Journal of Agricultural Research and Development
Number of Followers: 0  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 1596-5511
Published by African Journals Online Homepage  [261 journals]
  • Assessment of social media utilization by poultry and fish farmers in Oyo
           State, Nigeria

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      Authors: O. Bolarin, M.O. Oyekunle, S.A. Adebayo
      Pages: 1 - 7
      Abstract: The study attempted to assess the utilization of social media (online newspaper, Agricultural blog, Email, Facebook, Twitter and Wikipedia) by poultry and fish farmers in Oyo state. A random selection was used to select 110 respondents. Data were collected through structured questionnaire and analyzed with frequency count, percentage, and chi-square test statistics. Findings revealed that respondents are at various level of usage of social media. WhatsApp (84%) and Facebook (78%) were accessed and used social media for livestock farming purposes. Incidences of not able to access information were 43% for agricultural blogs, Emails and Twitter, 46% for online newspapers. Further analysis revealed that visiting agricultural Blogs, Wikipedia and Email and Instagram have significant relationship with the level of education of the farmers. The study posited that basic education do serve as an enhancer to the utilization of social media.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.1
      Issue No: Vol. 20, No. 1 (2021)
       
  • General and specific combining ability studies of yield and yield
           character of sweet potato weevil in predominant and non-predominant
           environments

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      Authors: M.S. Afolabi, G.O. Agbowuro, A.E. Salami, M.O. Akoroda
      Pages: 8 - 16
      Abstract: Combining ability for marketable sweet potato root yield were carried out using ten sweet potato varieties and their F1 hybrids in Cylasformicarius endemic (Landmark University, Omu Aran) and free (University of Ibadan) environments during 2012 cropping season. Both general combining ability and specific combining ability play significant role on traits such as marketable root yield, non- marketable root yield, and total number of storage root/plant and marketable storage root, root size, percentage of tuber damage and weight of total roots, as well as the incidence and severity were generally low, suggesting the role of additive and dominant gene action in tolerances to Cylasformicarius. Hybrids from the parents Resisto, TIS 87/0087 displayed high performance in term of Cylasformicarius tolerance. These parents and their hybrids appeared to have gene pools for Cylasformicarius tolerance that can be manipulated for developing promising hybrids in South west, Nigeria.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.2
      Issue No: Vol. 20, No. 1 (2021)
       
  • Genetic analysis of low-n traits in maize (Zea mays L) using triple
           test cross

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      Authors: M.S. Afolabi, G.O. Agbowuro, A.E Salami, M.O. Akoroda
      Pages: 17 - 28
      Abstract: Low-N maize variety is developed for its ability to tolerate low nitrogen soil environment. This experiment was conducted to study the genetic implication of Low-N maize variety for grain yield and related traits under low nitrogen soil conditions triple test cross analysis. Inbred lines used for the study were generated from twelve low nitrogen tolerance open pollinated maize varieties after six generations of selfing. Two inbred lines along with their F1 were used as testers for ten inbred lines in a triple test cross pattern to generate 30 crosses. The 30 crosses, their parents and the testers to State University, Ado-Ekiti during 2017 planting season. The experimental design was a Randomized Complete Block Design (RCBD). Data were collected on plant height, ear height, days to 50% anthesis, days to 50% silking, incidence of curvularia leaf spot, blight, plant aspect, ear aspect, ear rot, stay green, cob per plant, ear weight, grain moisture content and grain yield. All data were subjected to analysis of variance and complete genetic estimates. Additive and dominants were significant (P < 0.05) for all traits; however, epitasis estimates were not significant for all the traits tested. The degree of dominance component indicated partial dominance for all the traits. Correlation coefficients for days to 50% anthesis and 50% silking, plant height, ear height, number of cobs per plant and grain yield were positive and significant (P < 0.05). Since both additive and dominance gene actions were important for low-N traits, the use of reciprocal recurrent selection procedure can be adopted in incorporating the trait into elite maize varieties.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.3
      Issue No: Vol. 20, No. 1 (2021)
       
  • Status of accumulated heavy metals in soils from organic and conventional
           farms in Akinyele Local Government, Ibadan, Oyo State, Nigeria

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      Authors: T.E. Odunjo, E.Y. Thomas
      Pages: 29 - 40
      Abstract: The risk associated with the presence of heavy metals in soil is their potential toxicity and ability to enter the ecosystem through the food chain. Total heavy metal content of a soil is inadequate for predicting the toxicity of heavy metals in soil. Therefore, the current study was designed to determine the various forms in which the selected heavy metals: Chromium (Cr), Lead (Pb), Nickel (Ni), and Cadmium (Cd) exist in the soil to ascertain the available forms for plant uptake. Soils samples were randomly collected from selected organic and conventional farms in Akinyele local government, Ibadan, Oyo State, Nigeria, at different depths (0-15, 15-30 and 30-45 cm) using random sampling method. Routine analysis was carried out to determine the textural classes and chemical properties of soil samples. The total heavy metals of the soil samples were determined and their fractions were analysed using sequential extraction method. Cadmium was not detected in most of the soil samples. Residual fraction was predominant in all the analysed heavy metals. In addition, Cr was more associated with the oxidizable fraction having a range of 0.1 mg/kg from Ajibode organic farm (AO) at 30-45 cm depth. Pb and Ni were both more associated with reducible fraction with Pb having a range of 2.7 mg/kg in Ajibode conventional farm (AI) at 0-15 cm depth and 0.1 mg/kg in (AI) at 30-45 cm depth. Reducible values of Ni ranges from 4.3 mg/kg in AI at 0-15 cm to 1.4 mg/kg in AO at 30-45 cm. The apparent mobility and bioavailability for these heavy metals in the studied soils were in the order: Pb>Cr>Ni. The result showed that uptake of heavy metals by the plants would be low as the concentration of the exchangeable form of the heavy metals in the analysed soil sample has the least concentration when compared with the other forms.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.4
      Issue No: Vol. 20, No. 1 (2021)
       
  • Profitability analysis of small-scale fishing along Coastal Areas of Ondo
           State, Nigeria

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      Authors: S.S. Ashley-Dejo, O.A.B. Adelaja
      Pages: 41 - 50
      Abstract: This study evaluated the profitability analysis of small-scale fishing along coastal areas of Ondo State, Nigeria. Structured questionnaire was used to collect data from 400 small-scale fishermen which were selected via multi-stage sampling procedure. Data collected was analyzed using descriptive statistics and profitability indicators. Results revealed that mean age of respondents was 39 years, among the fixed assets for fishing, outboard engine has the largest percentage cost (88.32%) while among variable assets, fuel has the largest percentage cost (67.16%). Profitability indicators such as Benefit Cost Ratio (BCR) 1.29, Gross margin ₦1,261,476.60k/fisherman/year, Return on Investment (ROI) 0.29, Net Profit Margin (NPM) 0.23 and Gross Revenue Ratio (GRR) 0.77 were used to estimate the profitability of small-scale fishing. The findings further revealed that fishing boat (1.284), outboard engine (0.352), fishing nets (1.342) and fuel (0.193) were positively and statistically significant at p<0.05 level with fish output level while accessories (floats, sinks and hooks) (0.142) was positively and statistically significant at p<0.1 with fish output level. The R2 value was 72.1% showing that the independent variable was well explained by the exogenous variables. Problems encountered by small-scale fishermen include inadequate infrastructural facilities, poor road networking system and inadequate credit facilities. Based on the findings, it was recommended that small-scale fishermen should organize themselves into cooperatives in order to increase their credit accessibility. Likewise, government should embark on construction of good road network in order to ease transportation of fish harvested to the neighboring towns.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.5
      Issue No: Vol. 20, No. 1 (2021)
       
  • Stochastic dominance rankings of consumption expenditure amongst arable
           crop farming households in Delta State, Nigeria

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      Authors: O. Ojogho, S.O. Imade
      Pages: 51 - 69
      Abstract: Finessing the question on household settlement choice is to enquire the income/consumption expenditure distribution that either makes her better-off or worse-off. Using 430 household-level micro-data from a three-stage sampling procedure, the study ranked consumption expenditure by household attributes in Delta state, Nigeria on axiomatic poverty measure. Results showed that household heads in the widowed and 0<𝑎𝑔𝑒≤20 years categories in Delta-North first-order stochastically dominated Delta-South (𝑁≻𝑠=1𝑆), 20<𝑎𝑔𝑒≤40 years household heads in 𝑆≻𝑠=1𝐶 and 𝑁≻𝑠=1𝐶, household heads in the widowed, vocational education holder and 0<𝑎𝑔𝑒≤20 years, 20<𝑎𝑔𝑒≤40 years and 𝑎𝑔𝑒>60 years categories in 𝑁≻𝑠=1𝐶, while household heads in the vocational education holder, 0<𝑎𝑔𝑒≤20 years, 20<𝑎𝑔𝑒≤40 years and 𝑎𝑔𝑒>60 years categories in 𝑆≻𝑠=1𝐶. Household heads in the female, single, medium household-size, tertiary education holder and 0<𝑎𝑔𝑒≤20 years categories in 𝑁≻𝑠=2𝑆 and 𝑁≻𝑠=3𝑆. Household heads in the single, medium-size, 20<𝑎𝑔𝑒≤40 years and tertiary education holder categories in 𝑁≻𝑠=2𝐶 and 𝑁≻𝑠=3𝐶. Household heads in the separated spouse and small household-size categories in 𝐶≻𝑠=2𝑁 and 𝐶≻𝑠=3𝑁 while household heads that are in the single category in 𝐶≻𝑠=2𝑆 and 𝐶≻𝑠=3𝑆. There is, generally, no stochastic dominance between pairwise comparisons by district in the state, in terms of consumption expenditure, except by other household attributes.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.6
      Issue No: Vol. 20, No. 1 (2021)
       
  • Effects of gender-based roles on farm households’ food security status
           in rural areas of Kogi State, Nigeria

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      Authors: G.O. Akinsola, A.A. Ezekiel, T.B. Ajibade, I.J. Olaoye, O.A. Owootomo
      Pages: 70 - 81
      Abstract: Gender is one of the key issues of discourse among policy experts, research scholars and government as part of the sustainable development goals. In this paper, we examined gender roles in food security among farming households in Kogi state, Nigeria. First, we assessed the food security status of the farm households. Second, the contributions of gender in household security status were identified. A three-stage sampling technique was used to select 120 farm households and data were collected using a well-structured questionnaire. In the study we employed the use of food security index, chi square test and logistic regression analysis. The results revealed that only about 35% of the households are food secure (>2470 kcal/AE/day). The logistic regression model shows that fitted model is statistically significant with the log likelihood of 118.691 and Chi-square of 59.19 (P value < 0.05) with the R2 of 0.61. Household size, access to credit and membership of social groups are significant factors influencing households’ food security status. Therefore, the study recommends that women empowerments should be inculcated into the mainstream of any government policy targeted at ensuring food security of rural households.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.7
      Issue No: Vol. 20, No. 1 (2021)
       
  • Comparative morphology and ph of the alimentary tract in Archachatina
           marginata and Achatina achatina

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      Authors: F.A. Okeniyi, O.A. Osinowo
      Pages: 82 - 100
      Abstract: A study was carried out to investigate the comparative morphology and pH of the gut in the Giant African Land Snails, in Archachatina marginata and Achatina achatina respectively. The crop is long, distended and less fleshy with reddish brown coloured juice (5.8 ml volume) in A. marginata, while it is short, compact and fleshy with greenish brown coloured juice (3.2 ml volume) in A. achatina. The digestive gland was heavier (17.36 vs. 15.74 g) in the latter than the former. The absolute weight of the crop in A. marginata was significantly (p<0.05) higher than in A. Achatina, however, the absolute and relative weights of the digestive gland in A. achatina was significantly (p<0.05) higher than in A. marginata. There were significant (p<0.05) differences in linear measurements of the salivary gland and crop for absolute values and the salivary gland, crop, stomach and digestive gland for relative values. Archachatina marginata had significantly (p<0.05) longer salivary gland and crop than Achatina achatina for absolute length values and significantly (p<0.05) longer salivary gland, crop and digestive gland for relative length values. However, the relative stomach length in A. achatina was significantly (p<0.05) longer than in A. marginata. The gut pH was more acidic in the crop (5.38 and 4.83) than in the mouth (6.93 and 6.82) where it tended towards neutrality in A. marginata and A. achatina respectively. The pH profiles in the two species, decreased by 1.65 and 1.99 from the mouth to the crop while it increased by 1.46 and 1.97 from the crop to the distal digestive gland in A. marginata and A. achatina respectively. In the herbivorous snails, the pH along the gut regions remained acidic all through (5.38 – 6.93 and 4.83 – 6.82) in A. marginata and A. achatina respectively, confirming the herbivorous habits in these snail species. The longer gut and distended crop with higher volume of crop juice in A. marginata, implies its ability to store, utilize and digest more food materials than A. achatina. These results provide the basis for a better understanding of the physiology of the digestive processes in these snails.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.8
      Issue No: Vol. 20, No. 1 (2021)
       
  • Economic analysis of improved variety of groundnut production in
           north-western Nigeria

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      Authors: A.O. Ojedokun
      Pages: 101 - 111
      Abstract: This research was conducted to analyse the economics of improved  groundnut seeds’ production in North-Western, Nigeria. A multi-stage  sampling technique was employed for this study. Data were collected from 125 producers of improved variety of groundnut seeds in Bunkure Local Government Area (LGA) of Kano State using well-structured questionnaire. The data collected were analysed using both descriptive and inferential statistics. The descriptive statistics result revealed that respondents were active, mostly males and that they were mostly literate. The result revealed that the marketing of improved variety of groundnut seeds was efficient and that the enterprise was considered viable. Age, household size, farm size and access to credit were the factors that influenced the net marketing margin to producers of improved groundnut seeds. The study recommends that adequate credit facilities should be made available and improved variety of groundnut seeds should be subsidized so that producers can be motivated to use and adopt them.
      PubDate: 2021-10-06
      DOI: 10.4314/jard.v20i1.9
      Issue No: Vol. 20, No. 1 (2021)
       
 
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