Subjects -> AGRICULTURE (Total: 981 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (680 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
    - POULTRY AND LIVESTOCK (58 journals)

AGRICULTURE (680 journals)            First | 1 2 3 4     

Showing 601 - 263 of 263 Journals sorted alphabetically
Science as Culture     Hybrid Journal   (Followers: 10)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Scientia Agricola     Open Access  
Scientia Agropecuaria     Open Access  
Seed Science and Technology     Full-text available via subscription  
Seed Science Research     Hybrid Journal  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Semiárida     Open Access  
Siembra     Open Access  
Small Ruminant Research     Hybrid Journal   (Followers: 2)
Smart Agricultural Technology     Open Access  
Social & Cultural Geography     Hybrid Journal   (Followers: 25)
Social and Natural Sciences Journal     Open Access  
South African Journal of Agricultural Extension     Open Access   (Followers: 3)
South African Journal of Economics : SAJE     Hybrid Journal   (Followers: 7)
South African Journal of Plant and Soil     Hybrid Journal   (Followers: 1)
Spatial Economic Analysis     Hybrid Journal   (Followers: 9)
Sri Lanka Journal of Food and Agriculture     Open Access   (Followers: 1)
Stiinta Agricola     Open Access  
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Sugar Tech     Hybrid Journal   (Followers: 1)
Sustainability Agri Food and Environmental Research     Open Access   (Followers: 4)
Sustainability and Climate Change     Full-text available via subscription   (Followers: 5)
Sustainable Agriculture Research     Open Access   (Followers: 3)
Sustainable Environment Agricultural Science (SEAS)     Open Access   (Followers: 1)
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Terra Latinoamericana     Open Access  
The Agriculturists     Open Access  
The Journal of Research, PJTSAU     Open Access   (Followers: 1)
Translational Animal Science     Open Access  
Trends in Agricultural Economics     Open Access   (Followers: 7)
Tropical Agricultural Research     Open Access   (Followers: 1)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
Tropical and Subtropical Agroecosystems     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Tropical Technology Journal     Open Access  
Tropicultura     Open Access  
Turkish Journal of Agricultural and Natural Science / Türk Tarım ve Doğa Bilimleri Dergisi     Open Access  
Turkish Journal of Agricultural Engineering Research     Open Access  
Ukrainian Journal of Veterinary and Agricultural Sciences     Open Access  
Uluslararası Tarım ve Yaban Hayatı Bilimleri Dergisi / International Journal of Agricultural and Wildlife Sciences     Open Access  
UNICIÊNCIAS     Open Access  
Universal Journal of Agricultural Research     Open Access  
Universidad y Ciencia     Open Access  
Urban Agricultural & Regional Food Systems     Open Access  
Viticulture Data Journal     Open Access  
VITIS : Journal of Grapevine Research     Open Access   (Followers: 1)
Walailak Journal of Science and Technology     Open Access  
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access  
Weed Biology and Management     Hybrid Journal   (Followers: 3)
Weed Research     Hybrid Journal   (Followers: 4)
West African Journal of Applied Ecology     Open Access  
Wildlife Australia     Full-text available via subscription   (Followers: 1)
Wirtschaftsdienst     Hybrid Journal   (Followers: 5)
World Journal of Agricultural Research     Open Access  
World Mycotoxin Journal     Hybrid Journal   (Followers: 3)
World's Poultry Science Journal     Full-text available via subscription   (Followers: 3)
علوم آب و خاک     Open Access  

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West African Journal of Applied Ecology
Journal Prestige (SJR): 0.153
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0855-4307
Published by African Journals Online Homepage  [261 journals]
  • Estimation of soil organic carbon using chemometrics: a comparison between
           mid-infrared and visible near infrared diffuse reflectance spectroscopy

    • Authors: K.A. Olatunde
      Pages: 1 - 11
      Abstract: Analysis for soil organic carbon (SOC) content is a key component of sustainable soil fertility management. Estimating this parameter using traditional methods is time – consuming and may be inappropriate for large scale monitoring. This study assessed the potential of a combined application of diffuse reflectance spectroscopy and the partial least square regression (PLSR) to analyse and predict SOC in soils. Fifty three (53) topsoil samples were collected from areas with differing land use activities, and then analysed for SOC using a Flash 2000 organic elemental analyzer. Diffuse reflectance spectra of soil samples were measured in the visible near infrared (VNIR) and the mid-infrared (MIR) wavelength ranges using a Ger3700 VNIR spectrophotometer and a FT-IR spectrometer respectively. Partial least squares regression (PLSR) was used to develop prediction models. Models developed from both spectra predicted SOC with accuracy close to the elemental analyzer (R2 > 0.80) and offers a reliable alternative to the traditional laboratory analyses. On comparison using the coefficient of determination (R2), ratio of performance to deviation (RPD) and the root mean square error (RMSE), VNIR spectra offer better accuracy with an R2 = 0.90, RPD = 3.12 and RMSE = 0.07 Log10 %SOC compared to the MIR spectra with an R2 = 0.85, RPD = 3.09 and RMSE = 0.08 Log10 %SOC.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Seasonal Changes in Chemical Composition, Preference and In Sacco
           Degradation of Eight Different Fodder Tree leaves

    • Authors: F. O. Sarkwa, T. Adogla-Bessa, E. C. Timpong-Jones, L. K. Adjorlolo
      Pages: 12 - 23
      Abstract: Livestock farmers in the Coastal Savannah of Ghana cut and feed leaves of various naturally occurring fodder tree species to supplement livestock diets, especially in the dry season. The aim of this study was to determine the seasonal changes in chemical composition, rumen degradation characteristics and preference of sheep for eight common indigenous fodder tree leaves, and ascertain their contribution to livestock production. Fodder leaves from Albizzia lebbek (AL), Baphia nitida (BN), Blighia sapida (BS), Ficus exasperata (FE), Ficus polita (FP), Morinda lucida (ML), Moringa oleifera (MO) and Spondias mombin (SM) were used. Fresh leaves were sampled in the wet and dry seasons to determine changes in seasonal chemical composition. Four Djallonke sheep (two males and two females) of average weight of 27.3 kg ±0.22 were offered fresh fodder leaves in a cafeteria system to determine preference. In sacco dry matter (DM) degradation was determined using four fistulated sheep in a repeated atin suare design. Seasonal D crude protein C acid detergent fire D neutral detergent fire D and lignin content of the fodder leaves ranged fro 319.7 to 862.7 g kg-1, 150.0 to 359.2 g kg -1 D . to . g g -1 DM , 277.5 to 718.3 g kg -1 DM and . to . g g-1 DM respectively. Crude protein content of, AL and FP were higher for the wet season than dry season but BS had similar trend for both seasons. The soluble and potentially degradable fractions of D ranged from 113.3-216.8 and 142.9-627.7 g kg-1. It is concluded that the four most preferred fodder species were AL, FE, SM and MO. Their CP contents regardless of the season were higher than the minimum level considered as adeuate for oderate ruinant production. t is epected that these fodder leaves ill contriute to ypass protein and nitrogen retention and suseuently lead to eight gain hen fed to sheep.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Enhancing Soil Productivity in Ghana through the Use of Leguminous Cover
           Crops and Tillage Practices

    • Authors: R. N. Issaka, M. M. Buri, E. Sekyi-Annan, M. Musah, E. Dugan
      Pages: 24 - 32
      Abstract: Soil fertility in Ghana is low and rapidly declining due to inappropriate soil management practices. This review examines the role of leguminous cover crops and tillage practices in building and sustaining the fertility of soils for enhanced productivity. A trial in the forest zone of Ghana evaluated the effect of two main tillage practices {minimum (MT); full tillage (FT)} and 4 cropping systems; maize/mucuna + 30-20-20kg N-P2O5K2O ha-1(MMF1), maize/pigeon pea + 30-20-20 kg N-P2O5-K2O ha-1 (MPF1), maize/cowpea + 30-20-20 kg N-P2O5-K2O ha-1(MCF1), sole maize + 60-40-40 kg N-P2O5-K2O ha-1(SMF2), sole maize + 30-20-20 kg N-P2O5-K2O ha-1(SMF1). After 4 years of continuous cultivation, MPF1 under MT (3.41t ha-1) and FT (3.45 t ha-1) gave the highest maize yield. SMF1 (0.48 t ha-1) gave the lowest grain yield. A separate trial in the forest zone on a 5o slope showed that FT with sole maize and removal of maize stover resulted in significant soil lost (4.61t ha-1) and low maize yield. (2.33 t ha-1). FT under maize/cowpea rotation and incorporation of maize and cowpea stover, soil lost was significantly low (0.75 t ha-1) with higher grain yield (4.23 t ha-1). Low soil lost (0.37 t ha-1) and high grain yield (4.34 t ha-1) was also obtained under MT with maize/cowpea rotation with plant residue used as mulch. MT under sole maize with maize stover as mulch gave very low soil lost (0.27 t ha-1) but maize yield was also low (2.4 t ha-1). At Nyankpala after a two year callopogonium fallow maize was grown in the third year. MT with residue applied as mulch gave similar maize grain yield (4.1 t ha-1) as FT and residue removed with application of 40 kg N ha-1 (4.6 t ha-1). In the Savanna zone, mucuna was intercropped with maize at three different stages. Maize grain yield was significantly higher for the control in the first year but the least in the third year. Maize yield was highest at 6 WAP in the third year. Inclusion of appropriate leguminous crops in cropping systems in Ghana with incorporation of plant residue or as mulch is recommended. Minimum tillage in combination with leguminous crops will minimize soil erosion and improve crop yields. These good options need scaling up for the improvement of soil productivity.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Growth, Mortality, Sexual Maturity and Exploitation Level of the Golden
           African Snapper (Lutjanus fulgens, Lutjanidae) in Ghanaian Waters

    • Authors: E. Amador, J. Aggrey-Fynn
      Pages: 33 - 46
      Abstract: The golden African snapper, Lutjanus fulgens, is one of the most commercially important demersal species exploited by commercial fishers along the coast of Ghana. Growth and mortality as well as aspects of reproduction of L. fulgens were studied to contribute to the paucity of biological information on the species in Ghanaian waters. Samples were collected along the coast of Ghana from September 2018 to August 2019. Total lengths of L. fulgens sampled ranged between 16.2 and 45.6 cm. Length-weight relationship of the species showed isometric growth pattern. The asymptotic length (L∞), growth coefficient (K) and age at zero length (to) for L. fulgens were estimated as 51.09 cm, 0.47 yr-1 and -0.301yr respectively. Total (Z), fishing (F) and natural (M) mortality rates of L. fulgens were estimated at 2.69 yr-1, 1.91 yr-1 and 0.78 yr-1 respectively. The length-at-first capture (Lc) = 31.51 cm, was slightly lower than the length-at-first maturity (Lm) = 33.7 cm for females. The exploitation ratio (E = 0.71) of the stocks in Ghanaian waters was above the optimal exploitation levels. Peak spawning period was observed from July to September. Mean fecundity was estimated to be 77,833 ± 13,012 eggs (mean ± SE). There was no significant difference observed in the sex ratio between males and females. The findings suggest the stocks are under high fishing pressure and so it is recommended that to avoid exploiting the spawning biomass, closed season could be observed during the spawning periods.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Plant diversity and tree community structure along an elevation gradient
           in Apra Hills Sacred Grove, Ghana

    • Authors: A. Asase, A. Adeniyi
      Pages: 47 - 58
      Abstract: The Apra Hills Sacred Grove has one of the best patches of the threatened Southern Marginal Forest of Ghana, yet a study on vegetation has not been undertaken. We evaluated plant diversity and tree community structure in relation to an elevation gradient using 25 m x 25 m plots demarcated along a 1km transect in the grove. Vascular plants within the plots were identified, and trees with diameter-at-breast-height (dbh) ≥ 10 cm were measured. A total of 128 plants taxa were identified, and 21 species of trees were enumerated. Mean tree density was 292.33 ± 14.05 per ha, and dbh-size class distribution of the trees showed an inverted J-shape curve. Overall plant species richness decreased with increasing elevation whereas tree species diversity increased with elevation. But the relationships between elevation and tree species richness, tree density and basal area were statistically insignificant. Future studies on effects of edaphic and anthropogenic factors along the elevation gradients would improve our knowledge about the distribution of the plant diversity as well as their conservation.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Influence of Tillage, Crop Rotation and Crop Residue Management on Soil
           Erosion and Maize Yield

    • Authors: E. Dugan, R. N. Issaka, M. M. Buri, E. Sekyi-Annan, H. Omae, F. Nagumo
      Pages: 59 - 74
      Abstract: An experiment was conducted in 2014 and 2015 in the forest zone of Ghana to evaluate the effects of tillage, maize-cowpea rotation, and residue management on runoff, soil erosion and maize grain yield. Four treatments consisting of full tillage with continuous maize cropping and removal of crop residue (T1), full tillage with maize-cowpea rotation with incorporation of plant residues (T2), minimum tillage with maize-cowpea rotation and plant residues applied as mulch (T3), and minimum tillage with continuous maize cropping with residue mulch (T4) were imposed on a randomized complete block design with three replications. Results showed a very high runoff coefficient (15.53%) for T1, while runoff was significantly lower for T2 followed by T3 and T4. This translated into very high total suspended sediments (5.7 t ha-1) and subsequently higher (p = 0.007) total eroded soil (9.2 t ha-1). There seem to be a synergy between the presence of plant cover/mulch and residue incorporation resulting in the lowest runoff for T2, as the combined effect probably improved infiltration and soil permeability. In 2014, maize grain yield was lowest in the T1 (2.3 t ha-1) which was similar to T4 (2.4 t ha-1). Grain yields for T3 (4.2 t ha-1) and T2 (4.1 t ha-1) were also similar but higher than the other two treatments. In 2015, however, maize grain yields were significantly different among the various practices in the following order: T1 (1.2 t ha-1) < T4 (2.2 t ha-1) < T3 (3.4 t ha-1) < T2 (4.0 t ha-1). The inclusion of a legume in T2 and T3 probably enhanced the soil fertility status resulting in higher grain yields. Hence, tillage practices including cereal-legume rotation systems, coupled with effective management of crop residue is a promising strategy to address soil and nutrient loss to water erosion and increase crop yield.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Assessment of organochlorine pesticides and polychlorinated biphenyls in
           water from cage aquaculture farms in the Volta Lake in Southern Ghana

    • Authors: E.K. Magna, S.S. Koranteng, A. Donkor, C. Gordon
      Pages: 75 - 86
      Abstract: The Volta Lake system in southern Ghana has witnessed much agricultural activity in its catchment for over 50 years. There is documented evidence of an increased release of agrochemicals into the aquatic ecosystem. In recent years, cage aquaculture activities have also increased, raising the concern of further release of contaminants and issues of ecological risks in the lake environment. Therefore, this research documents the preliminary investigation into the possible release of contaminants by cage aquaculture activities into the aquatic medium. Sixty (60) water samples were taken from four (4) cage farms along the basin to examine the levels of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). Water samples in hexane solvent system were sonicated on an ultrasonic bath, electronically rocked, cleaned by liquid-phase extraction, and GC/ECD and GC/MS analyses for OCPs and PCBs, respectively. The water from the farms contained eleven (11) OCPs: δ-HCH, γ-HCH, heptachlor, α-endosulfan, β-endosulfan, endrin, o,p'-DDE, p,p'-DDE, o,p'DDD, p,p'-DDT, and methoxychlor, as well as five (5) PCBs: PCB-18, PCB-52, PCB-101, PCB-138, and PCB180. The OCPs concentration ranged 0.026± 0.018 µg/l (ww) for p,p'-DDE in fish farm B to 1.541± 0.031 µg/l (ww) for methoxychlor in fish farm A . Methoxychlor (1.541±0.031µg/l), δ-HCH (0.520±0.001 µg/l), endrin (1.173±0.161 µg/l), δ-HCH (0.280±0.057 µg/l) and δ-HCH (0.037±0.009 µg/l) recorded the highest levels with detection frequencies of 90%, 10%, 30%, 20% and 30% in fish farms A, B, C, D and controls respectively. PCBs concentrations varied from 0.070±0.011 ng/l for PCB 138 in farm D to 0.815±0.211 ng/l for PCB 101 in the fish farm C. PCB-18 and PCB-180 were predominant and accounted for 100% PCB in the water samples. The levels of heptachlor in farms A, B, and D and endrin in farm C exceeded the WHO MRL for drinking water. The pesticides found in the water samples were largely due to polluted aquaculture activities and most probable from fish feeds used in the farms.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
  • Occurrence areas of the common hippopotamus outside the Pendjari Biosphere
           Reserve, northern Benin: implication for sustainable conservation

    • Authors: G.R.M. Adounkè, G.N. Kpéra, C.A.M.S. Djagoun, B.D. Kassa, G.A. Mensah
      Pages: 87 - 97
      Abstract: This study was conducted to assess the distribution and occurrence areas of the common hippopotamus (Hippopotamus amphibius) outside the Pendjari Biosphere Reserve (PBR). Data were collected from 2018 to 2019 through the prospection of 139 grids of 2 km x 2 km. Tracks of hippo occurrence outside the protected area were surveyed and presence data in each of four habitats around the Pendjari River were analysed. Hippos are randomly distributed in the vicinity of the Pendjari River outside the protected area. Their distribution is significantly and negatively correlated with the distance from the Pendjari River (β= -0.0003; p=0.05) and positively correlated with cereal crops numbers (β= 1.004; p=0.008) around the Pendjari River. From the 227 hippo tracks recorded, 71.37 % were in cropland, 14% in gallery forest, 7.93% in grassland, and 6.6% at the riverbank. Because hippos occur in croplands, conservation programs and habitat management should focus on educating the local community and promoting positive conservation attitudes towards H. amphibius outside the Pendjari Biosphere Reserve.
      PubDate: 2021-12-31
      DOI: 10.4314/wajae.v29i2.
      Issue No: Vol. 29, No. 2 (2021)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
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