Soil pH for Nutrient Availability and Crop Performance最新文献

Fluoride Adsorption onto Soil Adsorbents: The Role of pH and Other Solution Parameters 土壤吸附剂对氟化物的吸附:pH和其他溶液参数的作用

Soil pH for Nutrient Availability and Crop Performance Pub Date : 2018-12-20 DOI: 10.5772/INTECHOPEN.74652

E. Wambu, Audre Jerop Kurui

{"title":"Fluoride Adsorption onto Soil Adsorbents: The Role of pH and Other Solution Parameters","authors":"E. Wambu, Audre Jerop Kurui","doi":"10.5772/INTECHOPEN.74652","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.74652","url":null,"abstract":"Soil adsorbents continue to attract increasingly high numbers of researchers in water defluoridation studies. An aspect of solution parameters, that is the aqueous adsorption of fluoride onto soil adsorbents in defluoridation studies, has been reviewed and reported. The pH was found to be the main factor controlling fluoride adsorption on the popular soil adsorbents including: aluminosilicates, iron (hydr)oxides, aluminum (hydr) oxides, apatites, carbonaceous minerals, calcareous soils and zeolites and the other key parameters being temperature, time of contact, and co-existent ions. Fluoride adsorption onto metal-exchanged zeolites and hydroxyapatites (optimum pH = 4–10), iron (hydro) oxide minerals (pH = 2–7), and carbonaceous minerals (pH = 4–12) is relatively pHindependent, and high amounts of fluoride are able to sorb upon the surfaces of these minerals in a wide range of pH values. However, montmorillonites (optimum pH = 5–6), aluminum (hydro)oxide minerals (pH = 5–7), and calcareous minerals (pH = 5–6) only sorb significant amount of fluoride in a narrow range of pH values. The fluoride adsorption onto the latter class of minerals, also generally occurring at slightly above room temperatures, appears to be highly specific and not strongly affected by the presence of coexistent anions including: PO 4 3− , SO 4 2− , Cl − , and NO 3 −.","PeriodicalId":159133,"journal":{"name":"Soil pH for Nutrient Availability and Crop Performance","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132801423","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

Introductory Chapter: Relevance of Soil pH to Agriculture 导论章:土壤pH值与农业的相关性

Soil pH for Nutrient Availability and Crop Performance Pub Date : 2018-12-18 DOI: 10.5772/INTECHOPEN.82551

S. Oshunsanya

引用次数: 35

Control of Soil pH, Its Ecological and Agronomic Assessment in an Agroecosystem 农业生态系统土壤pH控制及其生态农艺评价

Soil pH for Nutrient Availability and Crop Performance Pub Date : 2018-11-05 DOI: 10.5772/INTECHOPEN.75764

D. Karčauskienė, R. Repšienė, D. Ambrazaitienė, R. Skuodienė, Ieva Jokubauskaitė

{"title":"Control of Soil pH, Its Ecological and Agronomic Assessment in an Agroecosystem","authors":"D. Karčauskienė, R. Repšienė, D. Ambrazaitienė, R. Skuodienė, Ieva Jokubauskaitė","doi":"10.5772/INTECHOPEN.75764","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.75764","url":null,"abstract":"Lithuania is located in the humid zone, where mean annual precipitation exceeds mean evapotranspiration and soil acidification is an ongoing natural process encouraged by anthropogenic activities. Traditionally, the process may be controlled by different inten - sity liming. The chapter summarizes the data on long-term liming and fertilization exper iments made in Western Lithuania. The object of the investigation is the naturally acid soil, Bathygleyic Dystric Glossic Retisol (texture: moraine loam with clay-sized particles content of 12–14%), and the same soil exposed for more than half a century to different liming and fertilization intensity. Our systematic analysis shows that it is impossible to reach appropriate moraine loam soil conditions for organic matter decomposition, car - bon sequestration, soil aggregation, nitrogen fixation, nutrient accumulation, and plant growth by using intensive liming only. It is necessary to co-ordinate proper liming and organic fertilizing. The soil acidity was neutralized (pH KCl 5.9 ± 0.1) and mobile alumi num abolished in the topsoil and subsoil to a 60 cm depth; moreover, the highest amount of soil organic carbon (1.91%), water stable aggregates (59%), intense nitrogen fixation, and highest grain yield was established in the periodically limed (with 1.0 rate CaCO 3 every 7 years) soil with 60 t ha −1 farmyard manure (FYM) application.","PeriodicalId":159133,"journal":{"name":"Soil pH for Nutrient Availability and Crop Performance","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114076994","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

Effects of Acid Soils on Plant Growth and Successful Revegetation in the Case of Mine Site 矿区酸性土壤对植物生长和成功恢复的影响

Soil pH for Nutrient Availability and Crop Performance Pub Date : 2017-12-20 DOI: 10.5772/INTECHOPEN.70928

S. Matsumoto, H. Shimada, T. Sasaoka, I. Miyajima, G. J. Kusuma, R. Gautama

{"title":"Effects of Acid Soils on Plant Growth and Successful Revegetation in the Case of Mine Site","authors":"S. Matsumoto, H. Shimada, T. Sasaoka, I. Miyajima, G. J. Kusuma, R. Gautama","doi":"10.5772/INTECHOPEN.70928","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.70928","url":null,"abstract":"Acid soils are caused by mining, potentially causing the death of plants. Although soil pH is one of the useful indicators to evaluate acid soil conditions for successful revegetation, the dissolution of harmful elements under acidic conditions should be considered in addition to the tolerance mechanism of plants in mines. Thus, this study aims to report the current situation of acid soils and plant growth in mine site and to elucidate the effects of acid soils on plant growth over time through field investigation and a vegetation test. The results showed that the dissolution of Al from acid soils which were attributed to the dissolution of sulfides influenced plant growth. Not only soil pH but also the assessment of the dissolu tion of sulfides over time is crucial for successful revegetation, suggesting that net acid pro - ducing potential (NAPP) and net acid generation (NAG) pH, which are used for evaluating the formation of acidic water, are useful to evaluate soil conditions for the revegetation. Furthermore, acid-tolerant plant survived under acidic conditions by increasing the resistance against acidic conditions with the plant growth. Such factors and the proper selection of plant species play an important role in achieving successful revegetation in mines.","PeriodicalId":159133,"journal":{"name":"Soil pH for Nutrient Availability and Crop Performance","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129833241","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: 9