土壤科学期刊(英文)最新文献

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Estimation of Infiltration Models’ Parameters Using Regression Analysis in Irrigation Fields of Northern Ghana 加纳北部灌区入渗模型参数的回归分析
土壤科学期刊(英文) Pub Date : 2021-03-16 DOI: 10.4236/OJSS.2021.113009
A. Salifu, F. K. Abagale, G. Kranjac-Berisavljevic
{"title":"Estimation of Infiltration Models’ Parameters Using Regression Analysis in Irrigation Fields of Northern Ghana","authors":"A. Salifu, F. K. Abagale, G. Kranjac-Berisavljevic","doi":"10.4236/OJSS.2021.113009","DOIUrl":"https://doi.org/10.4236/OJSS.2021.113009","url":null,"abstract":"The quantification of soil \u0000infiltration is necessary for the estimation of water accessibility in soils \u0000for plant growth and development. Field infiltration tests runs were conducted on \u0000agricultural soils in three irrigation sites of Northern Ghana. The field data \u0000were fitted into Green and Ampt, Kostiakov, Philip, Holtan, Soil Conservation \u0000Service and Horton infiltration models for the determination of the unknown model \u0000parameters. Regression analysis at 95% confidence level using GraphPad Prism 8. \u0000Laboratory and field data on infiltration were used for the model fitting and \u0000the unknown parameters were determined using the calibrated models. The k and n parameters of Kostiakov model at \u0000Bontanga study site were found to be k = 28.0027 and n = 0.5902, k = 17.0294 and n = 0.4504 for Golinga and k = 23.0356 and n = 0.6339 for Libga. For all the models, the coefficient of determination ranged \u0000from 0.7612 to 0.9876 indicating strong relationships. Only Holtan model gave \u0000different values at all the three study sites. The parameter GIa and ic of the Holtan model drawn \u0000from hydrologic soil group were the same at all the study sites because of the \u0000same vegetative cover and surface conditions. The study observed the values of \u0000the parameters to have influenced the models’ performance.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46280709","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
Mineral Fertilizer Use for Optimal Groundnut Production in the Sudano-Guinean and Sudanian Zones of Benin 贝宁苏达诺-几内亚和苏丹尼亚地区利用矿物肥料优化花生生产
土壤科学期刊(英文) Pub Date : 2021-02-19 DOI: 10.4236/OJSS.2021.112005
F. Chabi, G. Dagbénonbakin, E. C. Agbangba, Issa Mouftaou, Augustin O. Bankolé, Brice T. C. Oussou, L. Ahoton, G. Amadji, A. Saidou
{"title":"Mineral Fertilizer Use for Optimal Groundnut Production in the Sudano-Guinean and Sudanian Zones of Benin","authors":"F. Chabi, G. Dagbénonbakin, E. C. Agbangba, Issa Mouftaou, Augustin O. Bankolé, Brice T. C. Oussou, L. Ahoton, G. Amadji, A. Saidou","doi":"10.4236/OJSS.2021.112005","DOIUrl":"https://doi.org/10.4236/OJSS.2021.112005","url":null,"abstract":"Abstract \u0000This study aims to determine the optimal N, P, K, Mg and Zn rates for groundnut production on Ferric and Plintic Luvisol in the Sudano-Guinean and Sudanian zones of Benin Republic. Two years (2018 and 2019) experiment was carried out in the municipality of Ouesse in the Sudano-Guinean zone and Bembereke in the Sudanian zone. The tested nutrient doses were N (0, 20 and 40 kg⋅ha−1), P (0, 25 and 50 kg⋅ha−1), K (0, 20 and 40 kg⋅ha−1), Mg (0, 15 and 30 kg⋅ha−1) and Zn (0, 4 and 8 kg⋅ha−1). The Box and Behnken rotating design is used to define the N, P, K, Mg and Zn rate combinations leading to 46 combinations. A completely randomized bloc design was setting up considering farmers as replication. In total, four farmers’ fields were selected. A one-way analysis of variance is carried out on yield data, using the linear mixed-effect model. Response surface analyses were used to determine the optimal doses for each N, P, K, Mg and Zn. Nodule production (6.5 times higher than the control), number of gynophores (2.8 times higher than the control) and root length (19.2 ± 0.2 cm) of groundnut plants were significantly (p = 0.0001) improved with nutrient application. The response surface analysis shows that treatments N-P-K-Mg-Zn of 16.01-20.18-6.70-5.65-2.47 (in the Sudano-Guinean zone) and 13.1-25.07-11.47-0-1.82 (in the Sudanian zone) are the optimal rates that have induced optimal yield of 2.1 t⋅ha−1 (i.e. 2.5 times the yield in the farmers’ field) pod yield and the best return on investment per hectare. Nevertheless, for a sustainable groundnut producproduction, treatment 13.1-25.07-11.47-20-1.82 is suggested as regular K input is required for the respect of the fertilization laws.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48557313","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
Effect of Food Waste Compost (FWC) and its Non-Aerated Fermented Extract (NFCE) on Seeds Germination and Plant Growth 食物垃圾堆肥及其无气发酵提取物对种子萌发和植物生长的影响
土壤科学期刊(英文) Pub Date : 2021-02-19 DOI: 10.4236/OJSS.2021.112007
R. Jarboui, Bilel Dhouib, E. Ammar
{"title":"Effect of Food Waste Compost (FWC) and its Non-Aerated Fermented Extract (NFCE) on Seeds Germination and Plant Growth","authors":"R. Jarboui, Bilel Dhouib, E. Ammar","doi":"10.4236/OJSS.2021.112007","DOIUrl":"https://doi.org/10.4236/OJSS.2021.112007","url":null,"abstract":"The aim \u0000of this study was to investigate the effect of the food wastes compost (FWC) \u0000and its non-aerated fermented extract (NFCE) on seed germination and growth of tomato (Solanum lycopersicum L.), watercress \u0000(Nasturtium officinale), \u0000chili pepper (Capsicum annuum), \u0000peas (Pisum sativum L.), chickpea (Cicer arietinum) and beans (Vicia faba) under greenhouse \u0000conditions. The FWC and NFCE were physico-chemically and microbiologically \u0000characterized. The NFCE effect was evaluated on tomato, watercress, and chili \u0000pepper seeds germination and seedling growth. However, for leguminous, pea, \u0000chickpea and bean seedlings, the FWC amended soils and irrigated with NFCE were \u0000tested for plants growth. The results of FWC analyses revealed that FWC has neutral pH, low EC and C/N ratio, with fertilizing \u0000elements (N, P, K and Mg) and lack of phytotoxic effect. The NFCE was \u0000characterized by low EC and relatively high carbon content (COD = 9700 mg/l), \u0000and intense microbial activity, notably mesophilic bacteria. Therefore, in fermented \u0000compost extract, mesophilic bacteria were increased by 225, yeasts by 25 and \u0000molds by 10 times compared to those of the investigated compost. In greenhouse, \u0000the diluted NFCE increased significantly (p< 0.05) germination and growth of the tested seedlings. Used \u0000alone, the FWC amended soil or the NFCE irrigated soil, improved the growth of \u0000tested seedlings. The use of soil amended with compost and irrigated by \u0000fermented compost extract decreased significantly the growth of the same \u0000experimented seedlings. Therefore, the FWC and its fermented extract were a \u0000suitable substrate for germination and growth of the studied seeds.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"11 1","pages":"122-138"},"PeriodicalIF":0.0,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48138394","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
Implications of Non-Carbonate Dolomite Minerals in the Formation of Red Soils in a Paleokarstic Context in the Taoudeni Basin in Burkina Faso 布基纳法索陶德尼盆地古岩溶环境下非碳酸盐白云石矿物对红土形成的影响
土壤科学期刊(英文) Pub Date : 2021-02-19 DOI: 10.4236/OJSS.2021.112004
Fidèle Kabore, Gounwendmanaghré Hubert Zongo, Bright Fafali Dogbey, K. Ouattara, Y. Millogo, Limata Kaboré, E. Hien, P. Zombré
{"title":"Implications of Non-Carbonate Dolomite Minerals in the Formation of Red Soils in a Paleokarstic Context in the Taoudeni Basin in Burkina Faso","authors":"Fidèle Kabore, Gounwendmanaghré Hubert Zongo, Bright Fafali Dogbey, K. Ouattara, Y. Millogo, Limata Kaboré, E. Hien, P. Zombré","doi":"10.4236/OJSS.2021.112004","DOIUrl":"https://doi.org/10.4236/OJSS.2021.112004","url":null,"abstract":"Uncertainties remain as to the ability of certain carbonate rocks to form the red soils covering them. These doubts, which have been the subject of debate for several decades, become real when carbonate rocks are pure and low in insoluble residues. In the carbonate rocks of the Taoudeni basin in Burkina Faso, brown-red to red soils develop, at the top of hillsides and in karstic cavities. No study in the region has yet shown the existence in these carbonate rocks of sufficient insolubles to form soils after decalcification. The objective of this study was therefore to identify and quantify the minerals of carbonate rocks in order to identify the origin of red soils. Petrographic, chemical (XRF) and mineralogical (XRD) investigations on dominant carbonate rocks features in the study area show that the rocks studied are mainly magnesian dolomites (Dolomite > 50% of carbonate minerals and Ca/Mg ratio 12%) in other dolomitic features. These insoluble silicates formed of quartz, potassium feldspar (orthoclase), clays (talc, phlogopite and kaolinite) and iron oxides constitute the main original material of reddened soils in karstic cavities.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"11 1","pages":"59-71"},"PeriodicalIF":0.0,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43904821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimal Sampling and Assay for Estimating Soil Organic Carbon 土壤有机碳估算的最佳采样和分析方法
土壤科学期刊(英文) Pub Date : 2021-02-19 DOI: 10.4236/OJSS.2021.112006
Jacob V. Spertus
{"title":"Optimal Sampling and Assay for Estimating Soil Organic Carbon","authors":"Jacob V. Spertus","doi":"10.4236/OJSS.2021.112006","DOIUrl":"https://doi.org/10.4236/OJSS.2021.112006","url":null,"abstract":"The world needs around 150 Pg of negative carbon emissions to mitigate climate change. Global soils may provide a stable, sizeable reservoir to help achieve this goal by sequestering atmospheric carbon dioxide as soil organic carbon (SOC). In turn, SOC can support healthy soils and provide a multitude of ecosystem benefits. To support SOC sequestration, researchers and policy makers must be able to precisely measure the amount of SOC in a given plot of land. SOC measurement is typically accomplished by taking soil cores selected at random from the plot under study, mixing (compositing) some of them together, and analyzing (assaying) the composited samples in a laboratory. Compositing reduces assay costs, which can be substantial. Taking samples is also costly. Given uncertainties and costs in both sampling and assay along with a desired estimation precision, there is an optimal composite size that will minimize the budget required to achieve that precision. Conversely, given a fixed budget, there is a composite size that minimizes uncertainty. In this paper, we describe and formalize sampling and assay for SOC and derive the optima for three commonly used assay methods: dry combustion in an elemental analyzer, loss-on-ignition, and mid-infrared spectroscopy. We demonstrate the utility of this approach using data from a soil survey conducted in California. We give recommendations for practice and provide software to implement our framework.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"11 1","pages":"93-121"},"PeriodicalIF":0.0,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48804659","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
Zai Pit Effects on Selected Soil Properties and Cowpea (Vigna unguiculata) Growth and Grain Yield in Two Selected Dryland Regions of Kenya 宰坑对肯尼亚两个旱地选定土壤性状和豇豆生长及粮食产量的影响
土壤科学期刊(英文) Pub Date : 2021-01-27 DOI: 10.4236/OJSS.2021.111003
S. Oduor, N. Mungai, S. Owido
{"title":"Zai Pit Effects on Selected Soil Properties and Cowpea (Vigna unguiculata) Growth and Grain Yield in Two Selected Dryland Regions of Kenya","authors":"S. Oduor, N. Mungai, S. Owido","doi":"10.4236/OJSS.2021.111003","DOIUrl":"https://doi.org/10.4236/OJSS.2021.111003","url":null,"abstract":"Erratic rainfall and temperature regimes, strongly affect agricultural productivity. To address the reduction in production, this study assessed the effect of Zai pit depths on selected soil properties and cowpea growth and grain yield. Zai pit technology was tested in two locations falling under Agroecological Zone IV (relatively dry areas) i.e. Machakos in Machakos County and Naivasha in Nakuru County, Kenya, aiming to determine the combined effect of four Zai pit depths and two levels of manure (plots with manure and plots without manure) on selected soil properties, growth and yield of cowpea. Experiment was laid out in split plot arrangement, with manure levels as the main plot factor and Zai pit depths (Flat: Z0, 30 cm: Z30, 45 cm: Z45 and 60 cm: Z60) as subplot factor, replicated four times. Cowpea (M66 variety) was used as the test crop. Inorganic nitrogen (Nin) and extractable phosphorus (Pex) were significantly (P < 0.05) higher, at 1.37 mg·kg−1 for Nin and 80.4 mg·kg−1 for Pex in Zai pits compared to flat plots which were at 0.91 mg·kg−1 for Nin and 47.1 mg·kg−1 for Pex. The values of Nin and Pex also varied depending on depths, with Z45 having highest Nin at 1.17 against the least, at 0.89 in the Z0, while Pex was highest in Z30 at 102.3 mg·kg−1 while Z0 having the least Pex of 89.7 mg·kg−1. Generally, crops in Zai pitted plots were larger in diameter (0.46 cm) and height (34.20 cm) than crops in flat plots at (0.42 cm) and (18.11 cm) diameter and height respectively. Better performance was observed in yield, with Z45 yielding 853.33 kg·Ha−1 against 685.0 kg·Ha−1 in Flat plots in Machakos while 931.66 kg·Ha−1 in Z45 against 563.33 kg·Ha−1 from Flat plots in Naivasha. This study demonstrated great potential of Zai pit technology on crop production, as reflected on improved growth and yield of cowpeas. Combining Zai pits with manure increases soil Nin, Pex and is a guarantee of great crop performance in terms of high final yields.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"11 1","pages":"39-57"},"PeriodicalIF":0.0,"publicationDate":"2021-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46291436","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
Vermicompost as an Alternative to Inorganic Fertilizer to Improve Okra Productivity in Côte d’Ivoire 蚯蚓堆肥替代无机肥料提高Côte科特迪瓦秋葵产量
土壤科学期刊(英文) Pub Date : 2021-01-07 DOI: 10.4236/ojss.2021.111001
S. Coulibaly, M. Touré, Amoin E. Kouamé, Ini C. Kambou, S. Soro, Kadokan I. Yéo, Sita Koné, B. Zoro
{"title":"Vermicompost as an Alternative to Inorganic Fertilizer to Improve Okra Productivity in Côte d’Ivoire","authors":"S. Coulibaly, M. Touré, Amoin E. Kouamé, Ini C. Kambou, S. Soro, Kadokan I. Yéo, Sita Koné, B. Zoro","doi":"10.4236/ojss.2021.111001","DOIUrl":"https://doi.org/10.4236/ojss.2021.111001","url":null,"abstract":"Okra is one of the most popular vegetables in Cote d’Ivoire which is produced by heavy use of inorganic fertilizers. Vermicompost can be an alternative to inorganic fertilizers. This field study investigated the effect of vermicompost on growth and productivity of okra as compared to inorganic fertilizers. The respective treatments were arranged in a complete randomized block design, each at three replications, during three-season cycles on a ferralitic soil. Results showed that the highest rate of germination was obtained with the vermicompost. The tallest plants of Abelmoschus esculentus (1.88 m) and Abelmoschus caillei (1.78 m) were observed with inorganic fertilizer. The number of leaves per plant registered when using vermicompost was 34.5 and 30.74 with Abelmoschus esculentus and Abelmoschus cailli, respectively. With inorganic fertilizer, the number of leaves per plant was 34.21 (Abelmoschus esculentus) and 32.32 (Abelmoschus cailli). Plants took about 60 days to flower in the control plots and about 46 days in the plots fertilized with the vermicompost and the inorganic fertilizer. The highest pod yields of Abelmoschus esculentus and Abelmoschus cailli were 8.7 t⋅ha−1 and 10.58 t⋅ha−1 with vermicompost and 8.85 t⋅ha−1 and 10.7 t⋅ha−1 with inorganic fertilizer, respectively. Vermicompost could be recommended as an alternative to inorganic fertilizer to produce okra on ferralitic soil in Cote d’Ivoire.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"11 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44839176","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: 8
Improving the Quality of Rubber Plants in Bagged Nurseries by the Use of Compost-Based Culture Substrates 利用堆肥基质提高袋装苗圃橡胶品质的研究
土壤科学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojss.2021.1111028
J. Essehi, E. F. Soumahin, G. F. Yao, S. Obouayeba, A. Yao-Kouamé
{"title":"Improving the Quality of Rubber Plants in Bagged Nurseries by the Use of Compost-Based Culture Substrates","authors":"J. Essehi, E. F. Soumahin, G. F. Yao, S. Obouayeba, A. Yao-Kouamé","doi":"10.4236/ojss.2021.1111028","DOIUrl":"https://doi.org/10.4236/ojss.2021.1111028","url":null,"abstract":"The decrease of fertility soils, the rarity of quality potting soil used to fill nursery bags, the high cost of chemical fertilisers and the problems associated with their use are leading planters and rubber nurserymen in developing and/or ex-panding areas to look for alternative and sustainable fertilization. In this per-spective, a trial was carried out at Research Station of CNRA-Bimbresso and in a farmer’s environment in order to evaluate the agronomic quality of compost made from chicken droppings and dry Panicum maximum straw to improve the growth of rubber plants in bagged nurseries. Mixtures based on potting soil and/or compost in different proportions were prepared. The fol-low-up of the trial focused on determination of the physico-chemical characteristics of the soils, measurement of the parameters of vegetative growth and the grafting success rate evaluation of rubber plants in nursery. The results obtained show that compost-based crop substrates plication of urea (at Kimoukro, in the centre), which under the conditions of the present study may be the recommended doses on rubber plants in bagged nurseries at Côte d’Ivoire.","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70632965","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 Environmental Impacts of Pesticide and Herbicide Use in Panama Canal Zone 巴拿马运河区农药和除草剂使用的长期环境影响
土壤科学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojss.2021.119021
Kenneth Ray Olson, Donna Tornoe
{"title":"Long-Term Environmental Impacts of Pesticide and Herbicide Use in Panama Canal Zone","authors":"Kenneth Ray Olson, Donna Tornoe","doi":"10.4236/ojss.2021.119021","DOIUrl":"https://doi.org/10.4236/ojss.2021.119021","url":null,"abstract":"The opening of the Panama Canal in 1913 transformed ocean-shipping and the availability of internationally-traded goods, shortened travel time between the Pacific and Atlantic oceans, increased ship tonnage, and sparked the growth of port authorities on both the Atlantic and Pacific coasts of the Panama Canal. Historically, the United States was number one and China was number two in tons of cargo that pass through the canal annually in the high stakes game of import and export markets. Prior to the construction of the Panama Canal, the most efficient way to cross the 82-kilometer isthmus, between the Port of Panama City on the Pacific and the Port of Colon on the Atlantic, was by mule trails through tropical forests and river transportation. Since the construction of the Panama Canal through tropical forests in the 1910s, pesticides have been essential for managing mosquitoes as well as controlling wetland vegetation that blocked lakes, rivers and the canal. The primary objective of this research study is to document the long-term environmental impacts of pesticide and herbicide use in the Panama Canal Zone. Many of these chemicals, including 2,4,-D, 2,4,5-T and DDT, have a long half-life under water and some, like arsenic (As), have no half-life. Pesticides and chemicals flowed into Lake Gatun via surface runoff either in solution or attached to the sediment during the rainy season. The by-product 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is an unanticipated contaminant created during the manufacture of the herbicide 2,4,5-T. TCDD can bio-accumulate in fish and birds and enter into the human food supply. The extent of the current chemical and pesticide contamination on former U.S. military base grounds and in Lake Gatun is unknown. Systematic soil sampling of current and former military bases, chemical disposal sites and Lake Gatun or the Panama Canal sediments is needed to determine if mitigation is necessary. How to cite this paper: Olson, K.R. and Tornoe, D. (2021) Long-Term Environmental Impacts of Pesticide and Herbicide Use in Panama Canal Zone. Open Journal of Soil Science, 11, 403-434. https://doi.org/10.4236/ojss.2021.119021 Received: August 20, 2021 Accepted: September 4, 2021 Published: September 7, 2021 Copyright © 2021 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/","PeriodicalId":57369,"journal":{"name":"土壤科学期刊(英文)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70633541","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: 7
Snake River: A Navigation and Spawning Dilemma 蛇河:导航和产卵的困境
土壤科学期刊(英文) Pub Date : 2021-01-01 DOI: 10.4236/ojss.2021.1110024
Kenneth Ray Olson, C. Suski
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引用次数: 1
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