South African Journal of Plant and Soil最新文献_第5页

Foliar fungicides provide chemical control of Fusarium head blight of wheat in South Africa 叶面杀菌剂对南非小麦枯萎病进行化学防治

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South African Journal of Plant and Soil Pub Date : 2022-07-15 DOI: 10.1080/02571862.2022.2087922

G. J. van Coller, F. Kloppers, V. Coetzee, Toinette van Rooyen, L. Rose, S. Lamprecht, A. Viljoen

{"title":"Foliar fungicides provide chemical control of Fusarium head blight of wheat in South Africa","authors":"G. J. van Coller, F. Kloppers, V. Coetzee, Toinette van Rooyen, L. Rose, S. Lamprecht, A. Viljoen","doi":"10.1080/02571862.2022.2087922","DOIUrl":"https://doi.org/10.1080/02571862.2022.2087922","url":null,"abstract":"Chemical control of a yield-limiting, quality-reducing wheat disease like Fusarium head blight (FHB) is an important management strategy; however, no fungicides are registered against it in South Africa. The aim of this study was to determine foliar fungicides and seed treatment efficacy for FHB management. Three commercial fungicides and two seed treatments were evaluated in a naturally infested field during 2011 and 2012. Significant interactions between the seed treatments and the foliar fungicides were obtained for FHB incidence and yield. When the fungicide Abacus® was sprayed in combination with either of the two seed treatments, FHB incidence was significantly decreased compared with use of the fungicide alone. Prosaro® sprayed in combination with Galmano® Plus as a seed treatment significantly decreased yield compared with the use of Prosaro alone or in combination with Vitavax® Plus as a seed treatment. The fungicide treatments significantly reduced FHB incidence and the percentage of Fusarium-damaged kernels (%FDK) when compared with control treatments, and significantly increased the yield. A weak but significant correlation was recorded between deoxynivalenol (DON) and %FDK. Strong negative correlations were observed between hectolitre mass (HLM) and FHB incidence and %FDK, respectively, and between yield and %FDK. These results indicate that the chemical control of FHB of wheat can be used to manage the disease in South Africa. Future research, therefore, must focus on integrating chemical control with host resistance to obtain optimal results.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45601530","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

Long-term reference evapotranspiration trend and causative factors analysis in the sugarbelt area of the midlands of KwaZulu-Natal, South Africa 南非夸祖鲁-纳塔尔省中部糖带地区长期参考蒸散趋势及成因分析

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2069874

Zoleka Ncoyini-Manciya, M. J. Savage, S. Strydom, A. Clulow

{"title":"Long-term reference evapotranspiration trend and causative factors analysis in the sugarbelt area of the midlands of KwaZulu-Natal, South Africa","authors":"Zoleka Ncoyini-Manciya, M. J. Savage, S. Strydom, A. Clulow","doi":"10.1080/02571862.2022.2069874","DOIUrl":"https://doi.org/10.1080/02571862.2022.2069874","url":null,"abstract":"Global warming is widely recognised, and its effects are becoming apparent throughout the world. Evaporation and evapotranspiration, the key components of the hydrological cycle, are generally expected to increase due to the rise in air and surface temperatures. However, previous studies suggest a decrease in these phenomena despite the observed global warming. The decreasing evaporation and evapotranspiration have been attributed to various factors. In this study, reference evapotranspiration (ETo) trends estimated using the Penman-Monteith method were studied over the KwaZulu-Natal midlands area of South Africa for the period 1997–2017. This study employed the Mann–Kendall test and linear regression model to analyse annual and seasonal ETo trends. In addition, the trends of climate parameters and their contribution towards ETo variation were analysed. The results indicate a generally decreasing ETo trend for most weather stations studied over the study period. The climate variables analysed indicate an average decreasing trend in wind speed, solar irradiance, and relative humidity while average air temperature exhibited no significant change. Relative humidity and solar irradiance were found to greatly influence ETo variation in the study area. We therefore conclude that atmospheric condition studies should consider both local and global climate phenomena to understand the actual drivers of change in any atmospheric factor.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48625523","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

Effect of lime source, fineness and granulation on neutralisation of soil pH 石灰来源、细度和造粒对土壤pH值中和的影响

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2043470

D. Du Toit, P. Swanepoel, A. Hardie

{"title":"Effect of lime source, fineness and granulation on neutralisation of soil pH","authors":"D. Du Toit, P. Swanepoel, A. Hardie","doi":"10.1080/02571862.2022.2043470","DOIUrl":"https://doi.org/10.1080/02571862.2022.2043470","url":null,"abstract":"Little information is available regarding the liming efficiency of various local lime sources and products currently available in South Africa. Recently, granulated micro-fine limes are being widely marketed as being superior to class A limes. Therefore, the aim of this study was to compare the effectiveness of various local, commercially available hydrated, calcitic and dolomitic lime sources (i.e., from different quarries) and forms (class A, micro-fine and granulated micro-fine) at increasing soil pH over time (365 days) under controlled conditions in two contrasting acid soils (sand and loam). Liming materials were applied adjusted for calcium carbonate equivalence (CCE) to achieve a target pHKCl of 5.5 and incubated at 85% field capacity. Micro-fine calcitic limes and hydrated limes increased pH the fastest (first 30–60 days), but the difference between these materials and class A limes attenuated over time. The difference in performance between class A limes was relatively minor (0.5 pH units), if applied based on CCE. Chemical purity (Ca%, CCE) was the main factor controlling liming effectiveness and particle fineness only related to the short-term reaction (4–7 days). Granulated limes showed the poorest performance in terms of pH correction attributed to poor solubility and spatial zonation of liming effects.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44259158","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: 3

Farm-scale digital soil mapping of soil classes in South Africa 南非土壤类别的农场规模数字土壤地图

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2059115

Trevan Flynn, A. Rozanov, F. Ellis, W. D. de Clercq, C. Clarke

{"title":"Farm-scale digital soil mapping of soil classes in South Africa","authors":"Trevan Flynn, A. Rozanov, F. Ellis, W. D. de Clercq, C. Clarke","doi":"10.1080/02571862.2022.2059115","DOIUrl":"https://doi.org/10.1080/02571862.2022.2059115","url":null,"abstract":"This study involved the evaluation of farm-scale digital soil classification in the Sandspruit catchment of the Western Cape Province, South Africa. The study aimed to evaluate a digital soil mapping (DSM) method, from feature selection, spatial predictions and sample design. The results showed that feature selection with the least absolute shrinkage and selection operator (LASSO) technique is a robust method as it had a high relative efficiency and achieved the highest accuracy for three out of the four soil classes predicted. This implies that covariate selection is the most notable aspect in DSM at the farm-scale. The top-performing predictive models achieved satisfactory results for soil associations (kappa = 0.64, accuracy = 74%), presence of a bleached topsoil (kappa = 0.64, accuracy = 74%) and soil depth (kappa = 0.48, accuracy = 74%), whereas only moderate results were achieved for soil texture (kappa = 0.43, accuracy = 66%). Lastly, the expert sampling locations had a higher average probability of occurrence (geographic and feature space distribution coverage) yet achieved similar performance to conditioned Latin hypercube sampling (cLHS).","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47057938","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: 3

Yield, nutritional composition, and consumer acceptability of sweetpotato cultivars cultivated with soil amendments in the Middleveld of Eswatini 斯威士兰中部用土壤改良剂培育的甘薯品种的产量、营养成分和消费者可接受性

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2062623

Samuel Kofi Tutu, H. R. Mloza Banda, C. Tfwala

{"title":"Yield, nutritional composition, and consumer acceptability of sweetpotato cultivars cultivated with soil amendments in the Middleveld of Eswatini","authors":"Samuel Kofi Tutu, H. R. Mloza Banda, C. Tfwala","doi":"10.1080/02571862.2022.2062623","DOIUrl":"https://doi.org/10.1080/02571862.2022.2062623","url":null,"abstract":"Uncertainties about the effects of nutrient amendment on the culinary attributes of sweetpotato have limited fertiliser use in Eswatini. The study was carried out at a moist and dry location of Eswatini to investigate the culinary and nutritional attributes of sweetpotato cultivated with no amendments, cattle manure and/or inorganic fertiliser. Treatments were replicated three times in a 3 × 5 factorial arrangement using a randomised complete block design. Three sweetpotato varieties used: Ligwalagwala, Kenya White, and Lamngititi, with five nutrient amendments: no fertiliser/manure, 450 kg ha−1 NPK, 6 t ha−1 manure, 3 t ha−1 manure + 225 kg ha−1 NPK, and 4.5 t ha−1 manure + 112.5 kg ha−1 NPK. Yield differences of 59.8% and 47.3% over the control were recorded with Kenya White and 3 t ha−1 manure + 225 kg ha−1 NPK, and 4.5 t ha−1 manure + 112.5 kg ha−1 NPK at Malkerns and Luve, respectively. Protein, calcium, and magnesium content of the varieties improved under 4.5 t ha−1 manure + 112.5 kg ha−1 NPK amendments. Taste, flavour, palatability, and acceptability accounted for the greatest amount of culinary variability while soil amendments contributed the least. The present study suggests that nutrient amendments contribute to the agronomic performance and nutritional quality of sweetpotato.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48000066","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

Determination of foliar nutrient sufficiency ranges in cultivated rooibos tea using the boundary-line approach 边界线法测定栽培鲁依波斯茶叶片养分充足度范围

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2078516

Jacobus FN Smith, A. Hardie

{"title":"Determination of foliar nutrient sufficiency ranges in cultivated rooibos tea using the boundary-line approach","authors":"Jacobus FN Smith, A. Hardie","doi":"10.1080/02571862.2022.2078516","DOIUrl":"https://doi.org/10.1080/02571862.2022.2078516","url":null,"abstract":"Despite the global importance of rooibos tea (Aspalathus linearis (Burm.f.) R.Dahlgren) as a health-promoting crop, foliar nutrient sufficiency ranges have not yet been determined for commercially cultivated rooibos. Determination of these ranges is critical for assessing plant nutrient status and maximising productivity. The aim of this study was to determine optimal rooibos foliar macro- and micronutrient ranges using the boundary-line approach (BLA) method across the main rooibos production areas in South Africa. Foliar nutrient and yield data were collected from 120 different commercial rooibos plantations in the six main rooibos producing areas of the country: Nardouwsberg/ Agterpakhuys, Clanwilliam, Gifberg/ Vanrhynsdorp, Nieuwoudtville, Citrusdal and Sandveld. The BLA-derived optimum (late winter) rooibos foliar macronutrient and 90%-yield sufficiency range concentrations (%) were: 1.55 (1.30–1.80) for N, 0.12 (0.09–0.14) for P, 0.54 (0.34–0.75) for K, 0.20 (0.14–0.26) for Ca, 0.22 (0.19–0.25) for Mg, and 0.10 (0.08–0.11) for S. Optimum micronutrient contents and ranges (mg kg−1) were: 85.8 (57.6–114.1) for Fe, 58.2 (26.9–113.8) for Mn, 16.6 (12.7–20.5) for Zn, 2.8 (1.3–4.2) for Cu, and 26.9 (21.8–32.0) for B. Maintaining foliar nutrient concentrations within these ranges will support maximal yields (1 200 kg ha−1). The foliar nutrient guidelines are of importance for enhancing sustainable rooibos production in South Africa.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44619548","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: 4

Screening herbicides and herbicide mixtures to identify alternative chemical controls for resistant plantago biotypes 筛选除草剂和除草剂混合物以确定抗性车前草生物型的替代化学控制

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2068084

Vhuthu Ndou, E. Phiri, P. Pieterse

{"title":"Screening herbicides and herbicide mixtures to identify alternative chemical controls for resistant plantago biotypes","authors":"Vhuthu Ndou, E. Phiri, P. Pieterse","doi":"10.1080/02571862.2022.2068084","DOIUrl":"https://doi.org/10.1080/02571862.2022.2068084","url":null,"abstract":"Herbicide mixtures are beneficial since they delay the occurrence of resistance to herbicides, provided that the herbicides used are effective at controlling the target weed species. Recently, plantago (Plantago lanceolata L.) was found to show 23 and 10-fold-resistance to glyphosate and paraquat. Experiments were carried out under controlled conditions to determine the efficacy of various herbicide concentrations and mixtures for the control of multiple resistant plantago at the two to three leaf stage. Proven plantago resistant (R) biotypes which had been shown to survive high glyphosate and paraquat dosages were used together with one susceptible (S) biotype in each experiment. The herbicides 2-methyl-4-chlorophenoxyacetic acid (MCPA), (400 g a.i. ha−1), carfentrazone-ethyl (400 g a.i. ha−1), and glufosinate (200 g a.i. ha−1), and two combined mixtures consisting of paraquat + diquat (120 + 80 g a.i. ha−1), and terbuthylazine + S-metolachlor (497.2 + 102.8 g a.i. ha−1) were applied either alone or in mixtures resulting in 12 treatments. The herbicides and combinations were chosen for their distinct modes of action. The mixtures achieved 0% survival rates for the R and S biotypes except for glyphosate + MCPA and MCPA applied alone. The herbicide mixtures identified in the study together with other non-chemical control options may be used in the management of glyphosate- and paraquat-resistant plantago infestations.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41442956","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

A reflection on tick control and the potential role of botanical products in integrated management practices 蜱虫控制及植物产品在综合管理实践中的潜在作用的思考

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South African Journal of Plant and Soil Pub Date : 2022-05-27 DOI: 10.1080/02571862.2022.2070935

Emc Theron, S. Magano

{"title":"A reflection on tick control and the potential role of botanical products in integrated management practices","authors":"Emc Theron, S. Magano","doi":"10.1080/02571862.2022.2070935","DOIUrl":"https://doi.org/10.1080/02571862.2022.2070935","url":null,"abstract":"Tick infestations and tick-borne diseases continue to be the leading causes of loss in livestock and revenue, particularly in developing countries, despite the prevalent use of synthetic acaricides. Research on plants as alternative sources of anti-arthropod agents has received attention from many researchers in the recent past. This interest is mainly motivated by the compelling need to move away from over-reliance on anti-arthropod synthetic chemicals, which have harmful effects on the environment and livestock. While many plants have been shown to possess anti-tick properties, such studies are in the main laboratory-based and thus their effects cannot be accounted for in the natural environments. Furthermore, knowledge on the mechanisms by which plant extracts impact ticks is sparse and not coordinated for ease of reference. The literature explored in this study was collected from indices included in the University of South Africa (UNISA) library database following keyword searches on plant extracts used as tick control methods and reviews. This article provides a consolidation of literature on the anti-tick properties of plant-based material and their prospects for being integrated with current tick control methods.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47694541","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

Agro-morphological diversity of Bambara groundnut lines evaluated under field conditions 田间条件下班巴拉花生品系农业形态多样性评价

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South African Journal of Plant and Soil Pub Date : 2022-03-15 DOI: 10.1080/02571862.2022.2037165

Nokuthula Hlanga, A. Modi, I. Mathew

{"title":"Agro-morphological diversity of Bambara groundnut lines evaluated under field conditions","authors":"Nokuthula Hlanga, A. Modi, I. Mathew","doi":"10.1080/02571862.2022.2037165","DOIUrl":"https://doi.org/10.1080/02571862.2022.2037165","url":null,"abstract":"Assessing agro-morphological variation is important for crop improvement strategies in cultivated species. Bambara groundnut (Vigna subterranea (L.) Verdc.) is a neglected crop that requires extensive agro-morphological characterisation to design suitable agronomic and crop improvement strategies. Nineteen Bambara groundnut lines were evaluated at two sites for agro-morphological traits in 2017 and 2018. The experiments were laid out as a split-split plot completely randomised design with three replications. The lines showed significant differences (p < 0.05) for all the traits except chlorophyll content and stomatal conductance. The observed genotypic differences would be useful for Bambara groundnut improvement if they are underpinned by genetic differences for recombination. Principal components 1 and 2 accounted for 52.31% of the variation showing that agro-morphological traits alone could not adequately discriminate between the Bambara groundnut lines. The most useful traits were root and shoot mass, plant height and leaf number. The negative and unfavourable correlations between seedling emergency and chlorophyll would complicate simultaneous selection for these traits during Bambara groundnut improvement. However, genetic dissimilarity indices indicated that there was genetic variation within the germplasm, which is important for Bambara groundnut improvement. Lines Kenya Capstone, Uniswa-Red-G, Uniswa-Red-R and KANO2 were selected for breeding and recommended for production due to their high performance in several key traits.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41637862","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

Evaluation of soil physico-chemical properties as affected by canopies of scattered agroforestry trees on croplands 农田散植农林业树木冠层对土壤理化性质影响的评价

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South African Journal of Plant and Soil Pub Date : 2022-03-15 DOI: 10.1080/02571862.2022.2056644

Shimbahri Mesfin, H. Haileselassie

{"title":"Evaluation of soil physico-chemical properties as affected by canopies of scattered agroforestry trees on croplands","authors":"Shimbahri Mesfin, H. Haileselassie","doi":"10.1080/02571862.2022.2056644","DOIUrl":"https://doi.org/10.1080/02571862.2022.2056644","url":null,"abstract":"Agroforestry tree species play an important role in improving soil fertility. Though studies have confirmed that different species show different potentials to improve soil fertility, it is difficult to compare them as the studies were conducted in different areas. The potential for different tree species to improve soil fertility on croplands in northern Ethiopia is not known. The objectives of this paper are to determine the effects of presence or absence of agroforestry tree species on soil physico-chemical properties and the effect of distance from the tree trunk on the same soil physico-chemical properties. Sixty composite and undisturbed soil samples from beneath canopies and outside canopies and 90 composite and undisturbed soil samples from three different distances from tree trunks were collected. The results revealed that soil bulk density, soil moisture, soil organic carbon (SOC), total nitrogen (TN), available phosphorus (Av.P), exchangeable potassium (Exch.K) and soil organic carbon stock (SOCS) were significantly (p < 0.05) different between soils beneath canopies and outside canopies as well as at different distances from the tree trunk. Soils around these agroforestry tree species have increased SOC, TN, Av.P, Exch.K and SOCS by 11.9 to 91.5%, 22.2 to 125.0%, 31 to 71%, 32 to 151.6% and 15.2 to 90.9%, respectively, compared to soils outside tree canopies. Faidherbia albida (Delile) A.Chev. has the highest potential for soil fertility compared to Balanites aegyptiaca (L.) Delile, Cordia africana Lam., Ziziphus spina-christi (L.) Desf., Acacia sieberiana DC and Croton macrostachyus Hochst. ex Delile. This study could provide useful information for soil fertility management and farmers’ decision-making when selecting tree species. The findings of this study imply that scattered trees on croplands significantly improve soil fertility and reduce the need for external fertiliser inputs.","PeriodicalId":21920,"journal":{"name":"South African Journal of Plant and Soil","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46394393","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: 3