Journal of Agro-environmental Science最新文献

{"title":"Exploring integrated pest management strategies in the control of the fall armyworm in smallholder organic agriculture farms in Africa","authors":"Akinyemi A.O","doi":"10.4314/as.v20i3.9","DOIUrl":"https://doi.org/10.4314/as.v20i3.9","url":null,"abstract":"The invasion of the fall armyworm was first reported in Africa in the year 2016. It has since then spread to over 40 countries across Africa, Asia and Australia. Being a polyphagous insect, the potential devastation effects of fall armyworm are enormous, especially among smallholder farmers. Currently, most farmers rely on the use of synthetic pesticides for the control of this pest. Organic agriculture however usually has very limited synthetic products approved for the control of pests. Organic production system therefore often depends on ecological processes, biodiversity and cycles adapted to local conditions for the management of pest. This paper reviews the availablemanagement methods applicable to the control of fall armyworm that can be adopted in an organic agriculture setting. Agroecological methods such as the push-pull technology, crop rotation and other methods including the use of resistant varieties, pheromone traps and biocontrol agents form an important control building block. Integrating these methods in a manner that is acceptable for organic certification will need further research, but it is certainly the way to go in combating the menace of the fall armyworm in organic agricultureand were reviewed in this paper.","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81475412","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}

{"title":"Influence of slope aspect and position on soil physical quality and management implications at University of Uyo Teaching and Research Farm, Akwa Ibom State, Nigeria","authors":"Ogban P.I.","doi":"10.4314/as.v20i3.6","DOIUrl":"https://doi.org/10.4314/as.v20i3.6","url":null,"abstract":"The effect of north and south aspects (NA and SA) and positions viz upper (US), middle (MS) and lower (LS) on soil physical quality from 2000 to 2020 was evaluated at the University of Uyo Teaching & Research Farm, to identify management factors at the Farm. Results showed that coarse sand increased while clay content decreased significantly (p < 0.05) and soil textural class was loamy sand on slope aspects and positions. Soil bulk density and total porosity were similar on the slope aspects and positions. Saturated hydraulic conductivity was significantly (p < 0.05) higher on SA (10.6 cm h–1) than NA (3.1 cm h–1) but declined by 93.03% and 52.47%, respectively in 20 years. Soil organic carbon, water-stable aggregates, mean-weight diameter of soil aggregates and structural index decreased by 14.81% and 38.33%, 60.53% and 55.53%, 31.26% and 21.71%, and 48.60% and 69.0%, respectively in NA and SA within the 20-year period. One minute infiltration rate was similar on NA and SA, while final infiltration rate, cumulative infiltration, sorptivity and transmissivity were significantly (p < 0.05) different; these soil hydraulic properties decreased in NA and SA by 83.0% and 86.43%, 52.63% and 14.29%, 81.53% and 63.9%, 95.0% and 85.63% and 90.42% and 96.11%, respectively on the aspects after the 20 years. Slope aspects and positions were generally similar in their effects on soil physical quality attributes, most of which were degraded after the 20 years. Principal component analysis (PCA) identified seven soil quality management factors namely (1) water intake, (2) soil texture, (3) soil pore space, (4) and (6) Fe and Al oxide, and (5) and (7) soil structural stability factors that could be used to improve and conserve the soil and water for increases in crop production on the farm.","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77448192","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}

{"title":"Utilizing urban refuse wastes as soil amendment in sub-Saharan Africa: Prospects and challenges in the Nigerian context","authors":"A. Alhassan, A. Chiroma, A. M. Kundiri, B. Bababe, I. Tekwa","doi":"10.4314/as.v20i3.8","DOIUrl":"https://doi.org/10.4314/as.v20i3.8","url":null,"abstract":"The challenge of effectively managing the huge wastes generated in most Nigerian cities raises serious environmental concerns with environmental pollution and ecological deterioration being the most serious concerns. Most municipal authorities responsible for evacuation of town refuse wastes lack the capacity to effectively manage the huge volumes of wastes generated on daily basis due to a number of reasons prominent of which include population explosion, urbanization, industrialization and economic growth. Application of urban refuse wastes (URW) to crop fields offers means of correcting many of the problems associated with collection and disposal of URW in Nigeria. Utilizing organic solid wastes on agricultural fields is an important way of effectively increasing soil organic carbon sequestration and supplying nutrients for crop plants. Proper sorting and composting of the URW has been shown to not only improve the quality of the wastes as organic amendment, but also help in correcting many of the health and environment related challenges associated with its direct application to agricultural lands. This review presents the results of research findings on utilization of URW as organic amendment and also highlights the constraints, prospects and the sustainability for utilizing URW as bio-fertilizer. It reveals that the average solid wastes generated in most Nigerian cities have a large fraction of organic materials that could easily be utilized as bio-fertilizer. Suggestions on ways to reduce some of the problems associated with land application of URW are proffered. Possible ways for improving the quality of URW intended for use as organic amendment are also suggested.","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90355863","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}

{"title":"Erodibility of soils of varying land utilization types and lithologic materials in central southeastern Nigeria","authors":"C. Ahukaemere, E. Onweremadu, F. Akamigbo","doi":"10.4314/as.v20i3.14","DOIUrl":"https://doi.org/10.4314/as.v20i3.14","url":null,"abstract":"Land use and parent materials influence behaviour of soils including responsiveness to erosion forces. The study investigated some soil properties related to erodibility in Abia and Imo States of Nigeria. Soil sampling was guided by geology and land use type. Random sampling technique was adopted in field studies. Two parent materials and three land use types were chosen for the study. In each parent material, three land use types were studied and in each land use, three soil profiles were sunk, described, and sampled using FAO procedure. Soil samples were subjected to laboratory analyses and data generated were analyzed using descriptive and inferential statistical tools. Results showed that sand sized particles ranged from 533.10 to 778.80 g kg–1 and this distribution differed significantly between parent materials. Silt content ranged from 141.70 g kg–1 in soils derived from false-bedded sandstone to 202.20 g kg–1 in shale-derived soils. Clay-sized particles ranged from 77.30 g kg–1 in soils derived from false-bedded sandstone to 264.70 g kg–1 in shale-derived soils, respectively. Water-stable aggregate ranged from 19.38% in false-bedded sandstone to 29.23% in shale-derived soils. The DR (dispersion ratio) mean values ranged between 4.26 in shale and 8.46 in false-bedded sandstone, while the CDI (clay dispersion index) mean values ranged between 2.17 in shale and 8.41 in false-bedded sandstone, respectively. The forest soils had the lowest values of both DR (6.89) and CDI (6.40) for soils of the false-bedded sandstone, 3.85 and 1.59 for those derived from shale. The clay flocculation index (CFI) had mean of 2.16 in false-bedded sandstone and 7.83 in shale. In soils of the varying land use types, the mean soil pH (H2O) ranged from 4.28 to 4.64 in soils derived from false-bedded sandstone and 4.27-5.57 in those derived from Shale. From the results, parent material and land use influenced soil erodibility parameters (water-stable aggregates, mean-weight diameter, DR, CDI, and CFI) and other soil properties such as organic carbon, bulk density, and moisture content.","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74337378","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}

{"title":"Comparative analysis of the profitability of small and medium scale cassava and palm fruit processing in Abia State, Nigeria","authors":"F. Okoronkwo, S. Onya, J. E. Amah","doi":"10.4314/AS.V19I2.1","DOIUrl":"https://doi.org/10.4314/AS.V19I2.1","url":null,"abstract":"This study was designed to comparatively examine the profitability of small and medium scale cassava and palm fruit processing in Abia State, Nigeria. Multi-stage sampling technique was adopted in selecting 50 cassava and 50 palm fruit processors to give total respondents of 100. Simple descriptive statistics such as means and percentages, cost and returns analysis and Z-test were adopted in analyzing the data. The socioeconomiccharacteristics of the processors showed that middle aged persons between 25 and 54 accounted for majority (70% and 60%) of the respondents for cassava and palm fruit processors respectively. Also majority (60% and 64%) of the respondents were female. The majority of the respondents (60% and 54%) of the cassava and palm fruit processors had at least secondary education implying that the processing business was dominated by literates/elites. Cassava processors gained monthly net returns of N308,000 as against N 227,000 realized by palm fruit processors, indicating that cassava processing is more profitable than palm fruit processing. In view of its contribution to this paper, the following are recommended: a re-establishment of active processing firms which are income-spinning ventures; on the macro-level, government should discourage the exportation of competing products which has a multiplier effect on the operations of the firms and as such protect them from harsh competitions capable of weakening their profit performances. \u0000Key words: This study was designed to comparatively examine the profitability of small and medium scale","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78585117","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}

{"title":"Effect of different processing methods on chemical and pasting properties of tamarind (Tamarindus indica L.) seed flours","authors":"E. Uzodinma, E. G. Osagiede, J. N. Chikwendu","doi":"10.4314/as.v19i1.1","DOIUrl":"https://doi.org/10.4314/as.v19i1.1","url":null,"abstract":"This study investigated the effect of autoclaving, boiling and roasting methods on the chemical and pasting properties of tamarind seed flour. The flours were analyzed for proximate composition, functional properties, selected mineral contents, anti-nutrients and pasting properties. Results indicated that there were significant (p < 0.05) differences in the moisture, protein, fat, fibre, ash and carbohydrate contents of the flour samples with values that ranged from 10.26-11.36, 19.64-24.23, 2.26-4.13, 3.25-4.55, 3.48-3.98 and 52.59-59.86%, respectively. Significant ( p < 0.05) differences were also observed in the values of selected functional properties and minerals (sodium, magnesium, potassium and phosphorus). Boiling method relatively reduced some of the anti-nutrients more effectively than others. Flour from boiled T. indica seeds could withstand heating and shear stress compared to other processed samples because of its low breakdown viscosity value. However, flour from roasted seeds had highest setback viscosity value among others and might withstand retrogradation better than others. Overall results indicated that autoclaved, boiled and roasted seed flours could be useful in pasta, noodle and bakery industries. Keywords: boiling, flour, pasting properties, tamarind seed flours, tamarind seeds, viscosity","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78759454","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}

{"title":"Willingness of snail consumers to choose snail production as livelihoods in Ibadan Southwest Local Government Area of Oyo State, Nigeria","authors":"A. Aromolaran, C. I. Alarima, J. Awotunde, O. Olatunde","doi":"10.4314/as.v18i3.6","DOIUrl":"https://doi.org/10.4314/as.v18i3.6","url":null,"abstract":"Snails are common in the rainforest region especially during the rainy season, but its population in the wild is decreasing due to human and environmental activities. This affect quantity available for consumption and it prompts the reason to encourage snail production. The study examined snail consumer’s willingness to choose snail production as means of livelihoods. Snowball sampling technique was used to select 120 consumers. Data were obtained through questionnaires and analysed using descriptive and correlation analyses. The result shows that many (60%) of the respondents were male, 48.7% were married with an average income of ₦ 78,983.64 and 37 years of age. Level of snail consumption was high (63.4%) and more than 50% were willing to choose snail production as a means of livelihood. Meanwhile, poor supply of feeding materials (43.5%) and inadequate skills in snail rearing (39.1%) were perceived as major constraints. Correlation result shows significant relationship between age ( r = 0.346, p < 0.05), level of snail consumption ( r = 0.200, p < 0.05) and willingness to choose snail production as means of livelihoods. The study concluded that people that consume more snails were willing to choose snail production. It is recommended that concerned agencies for capacity building should consider training people especially snail consumers in snail production and provide palliative resources to overcome challenges in snail production for sustainability and transformation of the agricultural system. Keywords: consumers, willingness to choose, snail production, constraints and livelihoods","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89152144","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}

{"title":"Assessing the length of growing season in the Sudan Savanna Ecological Zone of Nigeria as a challenge to food security for sustainable development","authors":"S. Haruna, M. Murtala","doi":"10.4314/as.v18i3.2","DOIUrl":"https://doi.org/10.4314/as.v18i3.2","url":null,"abstract":"Since the inception of the present Government in May 2015, it has been battling with socio-economic problems ranging from economic recession, fall of crude oil prices in the international markets and insecurity challenge, among others. To achieve sustainable development goals, Government focused on agriculture as the best option for tackling such problems. It is against this background that this paper aimed at assessing the length of growing season in the Sudan Savanna Ecological Zone of Nigeria using daily rainfall data recorded at nearby stations from 1981 to 2010. It assessed the level and mean length of growing season in Kano, Katsina, Maiduguri, Potiskum, Gusau and Sokoto, all of which are located within this ecological zone. Data analysis involved the use of descriptive statistics to compute cumulative pentade rainfall and ogive of cumulative pentade rainfall. Using pentade and Julian day calendars, an annual ogive of cumulative pentade rainfall was drawn using Microsoft Excel for each study location and length of growing season determined from 1981 to 2010. Results obtained indicate that mean length of growing season for the study area was approximately 125 days, a duration that is slightly longer than four months. To achieve sustainable development in agriculture, the study recommends that agricultural policies in the study area should take into consideration the rather short mean length of growing season in the study area while exploring effective and feasible water conservation techniques to complement rainwater. Keywords: assessment, growing season length, Sudan savanna, Nigeria","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85105048","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}

{"title":"Effects of pruning location on growth and fruiting of three tomato (Lycopersicon esculentum Mill) varieties in rainforest zone of Nigeria","authors":"E. Falodun, S. Ogedegbe","doi":"10.4314/as.v18i3.1","DOIUrl":"https://doi.org/10.4314/as.v18i3.1","url":null,"abstract":"A field experiment was carried out during the 2016/2017 dry cropping season at the Experimental Farm of the Department of Crop Science, Faculty of Agriculture, University of Benin, Benin City to examine the effects of location of pruning on some vegetative and reproductive attributes of tomato varieties. The trial was laid out in a 3 × 4 factorial arrangement fitted in a randomized complete block design in three replicates with twelve treatment combinations per replicate and 36 for the whole replicates consisting of four location of pruning, P1 (pruning the tips only), P2 (pruning the lateral suckers only), P3 (pruning the tips and lateral suckers) and P0 (control, i.e., no pruning) on three varieties of tomatoes V1 (Cobra), V2 (Roma VF) and V3 (UC82). The results showed that Cobra variety produced higher fruit weight/plant (37.86 g) and more number of rotted fruits (1.42) than other varieties. Roma VF showed superiority in number of branches /plant (22.58) compared with Cobra variety (15.42) and UC82 (14.67). Pruning at P1 and P0 increased number of branches (23.33 and 21.89) than P2 (14.56) and P3 (10.44) Number of leaves increased in P1 compared with P2 and P3 and the leaf area increased at P3 (36.32 cm 2 ) more than P0 (28.34 cm 2 ). The rotted fruits increased in this order P2, P3 > P0, P1. Since pruning increased the number of rotted fruits/plant but produced non-significant increases in fruit weight/plant (g) and fruit yield (t ha -1 ), any of the three varieties of tomato could be used in Edo rain forest zone of Nigeria at no pruning. Keywords: cultural practices, leaf area, rotted fruits, stem diameter, suckers","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77572019","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}

{"title":"The oil palm (Elaeis guineensis Jacq): nature’s ecological endowment to eastern Nigeria","authors":"C. C. Okolo, E. Okolo, A. L. Nnadi, F. E. Obikwelu, S. E. Obalum, C. Igwe","doi":"10.4314/as.v18i3.9","DOIUrl":"https://doi.org/10.4314/as.v18i3.9","url":null,"abstract":"The paper highlights oil palm as a multipurpose tree crop symbolizing nature’s endowment to the people of South East, Nigeria, and presents available evidence that the center of origin for the palm is within the area. The structure of the natural habitat of the oil palm – the groves, from where several genetic collections have been made for the improvement of the crop worldwide – is described. The oil palm is viewed as closely interwoven with the people providing their requirements in terms of food, medicine and materials for infrastructural development. In a wider context, the ecological, socio-economic, and socio-cultural and traditional values of the palm are discussed. The history of efforts to exploit the potentials of the crop through domestication and genetic improvement is given. Because the potential of oil palm is yet exhausted, the action plan for further development in the natural habitat and plantations is also given, highlighting the prospects of increased oil palm production as well as some of the constraints on the way to realising this all-important project. The paper identifies areas needing action research towards the sustainable development of oil palm. Among other suggestions in this direction, the paper recommends the creation of a center of excellence in oil palm studies within the South East, Nigeria to expand the scientific exploitation of the natural groves and encourage plantation establishment for the benefit of not only the people whose God-given gift is now a highly valuable crop in the world, but the entire country and even beyond. Keywords: multipurpose tree, natural groves, oil palm plantations, agricultural growth, South East Nigeria","PeriodicalId":15011,"journal":{"name":"Journal of Agro-environmental Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80577707","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}