3 edition of Salt Affected Soils And Crop Production found in the catalog.
Salt Affected Soils And Crop Production
October 9, 2003 by Agrobios .
Written in English
|Contributions||P. Lal (Editor), B. R. Chippa (Editor), Arvind, M.D. Kumar (Editor)|
|The Physical Object|
|Number of Pages||375|
Earth’s Soil Is Getting Too Salty for Crops to Grow causes some $ billion annually in lost crop production. there will be a need for productivity enhancement of salt-affected lands. Soil salinity impedes crop production in many parts of the world, including large areas of farming land in Australia. Professor Timothy Colmer from .
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Accumulation of excessive salt in irrigated soils can reduce crop yields, reduce the effectiveness of irrigation, ruin soil structure, and affect other soil properties. This publication is designed to help you evaluate the kind and amount of salts present in soils and to select management by: Soil salinity control prevents soil degradation by salinization and reclaim already saline soils.
This book will help develop the proper management procedures, to solve problems of crop production on salt-affected soils. Key Features. Provides both agricultural science and soil science perspectives on soil Price: $ This publication describes the soil tests commonly used in evaluating salt-affected soils in the western United States and gives general guidelines for test interpretation.
It will help readers: (1) understand how sodium, calcium, and magnesium affect soil Salt Affected Soils And Crop Production book (2) request appropriate soil analyses from commercial laboratories; (3) interpret soil test data; (4) choose.
Additional Physical Format: Online version: Dargan, K.S., Crop production in salt-affected soils. New Delhi: Oxford & IBH, © (OCoLC) The area of salt-affected land is increasing because of irrigation practices and changed land use.
Breeding crops that tolerate soil salinity and yield well in salt-affected soils, and employing crop management practices to counter salinity, have been proposed to maintain crop by: use of salt-affected soils. 40 Technical support for the conservation and use of salt-affected soils. 42 The system of hydrotechnical, agricultural and chemical amelioration of saline and alkaline as several fruit, vegetable and ornamental crops suffer from salinity within the EC interval of.
The chapters in this book highlight the significant environmental and social impacts of different ameliorative techniques used to manage salt affected soils. Readers will discover new knowledge on the distribution, reactions, changes in bio-chemical properties and microbial ecology of salt affected soils through case studies exploring Indian soils.
Salts can be deposited in the soil from wind and rain, as well as through the weathering of rocks. These processes, combined with the influence of climatic and landscape features and the effects of human activities, determine where salt accumulates in the landscape.
When the accumulated salt in soil layers is above a level that adversely affects crop production, choosing salt-tolerant crops and.
Estimates of the area of salt-affected soils vary widely, ranging from 6% to 10% of earth's land area, and 77 million hectares (Mha) of irrigated lands.
Crop yields are drastically affected due to lack of availability of water, nutrients, and oxygen in the root zone. The magnitude of yield reduction depends on Salt Affected Soils And Crop Production book crop, soil type, and management.
Nutrient management on alkali soils must take account of the enhanced solubility of phosphorus compounds, high losses of applied nitrogenous fertilizers and the reduced availability of certain micronutrients. Nutrient management on saline soils must take account of the effects of soluble salts on nutrient uptake, losses of nutrients due to leaching and the accumulation of toxic ions.
Origin,classification and distribution of salt-affected soils;saline soils and their management;sodic soils and their management;salinity problems of the dryland regions;water quality and crop production;socio-economic considerations in reclamation and management of salt-affectedsoils.
Reclamation and management of salt-affected soils after drainage, pp. – In: Proc. 1st Annual Western Provincial Conf. on rationalization of water and soil research and management. The excessive concentration (EC) and ratios (e.g.
ESP, SAR) among particular salts (Na, Cl, Ca, Mg) as well pH conditions need to be taken into account when considering appropriate strategies for reclamation of salt-affected soils in crop production. Such salt-affected soils can be categorised into: i) saline (ECe > 4 dS/m, ESP. Salt-prone land and water resources are major impediments to the optimal utilization of crop production systems in many arid and semi-arid regions of the world, including Iran (Alizadeh et al.
; Moghaddam and Koocheki ). The salinization of land and water resources has been the consequence of both anthropogenic activities (causing human-induced or secondary salinity and/or sodicity.
soils), or both (saline-sodic soils). Salt affected soils commonly contain a mixture of cations of sodium, calcium, magnesium and potassium and anions of chloride, sulfate, bicarbonate, carbonate and sometimes borate and nitrate.
When the total salt, individual salt or combination of salts in the soil is. This book provides the first comprehensive overview of saline and alkaline soils in Latin America, known for having one of the most extensive surface of salt-affected soils in the world.
It is organized along two main axes: soils and vegetation. When salts more soluble than calcium carbonate and gypsum are present in the soil and affect crop growth and yield of most crops these soils are considered salt of these soils have an Electrical Conductivity of more than 4 Ohms/cm. Many of them are classified as presence of salts affects the plant uptake of nutrients and the microbiological activity in the soil.
Salts can be deposited in the soil from wind and rain, as well as through the weathering of rocks. These processes, combined with the influence of climatic and landscape features and the effects of human activities, determine where salt accumulates in the landscape. When the accumulated salt in soil layers is above a level that adversely affects crop production, choosing salt-tolerant crops.
Neli Jordanova, in Soil Magnetism, Pedogenesis of iron oxides in the salt-affected soils, as reflected in soil magnetism. Salt-affected soils are characterized by a strongly alkaline soil reaction (Schaetzl and Anderson, ).The soils containing sodic salts have an enhanced content of exchangeable Na + and pH > The soil profile S shows a pH between and in the upper.
signi cantly reduces the yield of most crops. Soils with an electrical conductivity (EC) of the S alt-affected soils cover about mill ion ha production in saline soils requ ires salt.
The focus is on maintaining adequate soil salinity to counteract the adverse effects of exchangeable Na on soil hydraulic properties. Salinity is the key to rapid reclamation as demonstrated by Reeve and Doering in the reclamation of clay loam soil using the high‐salt‐water dilution method.
Soil salinity control prevents soil degradation by salinization and reclaim already saline soils. This book will help develop the proper management procedures, to solve problems of crop production on salt-affected soils. Provides both agricultural science and soil science perspectives on soil Author: Nesreen Houssein Ahmen Abou-Baker, Ebtisam Abdelmohsen El-Dardiry.
Improving Variety and Crop Management in Salt-Affected Areas A lmost million hectares of coastal and inland agricultural lands are affected by soil salinity and alkalinity. Approximately 22 million hectares of saline areas are in Asia, with 11 million hectares in India alone.
Low food production and poverty are high in these areas. Salt-affected soils are distributed throughout the world, especially in arid and semiarid regions. Salts are common in areas where the input of water containing salts exceeds the drainage, resulting in increased salt concentration in the soil.
This is likely to occur in low-lying places, or. As the project continues, soil properties will be monitored and assessed to determine if the salinity-affected soils can be returned to annual crop production.
Salinity is an important analytical measurement since it reflects the suitability of the soil for growing crops. On the basis of using a soil saturation extract, ECe values of ≤2 dS m −1 (or mmhos cm −1) are safe for all crops.
Yields of very salt sensitive crops are negatively affected by ECe between 2 and 4 dS m −1. Salt stress is one of the major abiotic stresses limiting crop production especially in arid and semi-arid regions. It is reported that about 7 % of the total earths land and 20 % of the total.
Salt-affected soils cause poor plant growth, affect crop production, and reduce water use efficiency. Some salt-affected soils have physical problems that slow water infiltration and increase surface runoff. The reclamation of salt-affected soils can lead to better water management, water use efficiency, and crop production.
Crop Production in the Pacific Northwest (PNW E), addresses irrigation water man-agement for salt-affected soils. Management of salt-affected soils is a chal-lenge, because salts affect many processes: • Crop growth (including yield, quality, and economic return) • Soil physical properties (such as aggregation and water infiltration).
Salt-affected soils cause poor plant growth, affect crop production, and reduce water use efficiency. The reclamation of salt-affected soils can lead to better water management, water use efficiency, and crop production.
Publication Number:: Availability: Electronic Download. USE OF SALINE GROUNDWATER FOR CROP PRODUCTION ON SALT AFFECTED SOIL By Aziz Ahmed Malik, Khalid Mahmood Subhani and M. Shad1 ABSTRACT: The study was carried out on saline-sodic, non-gypsiferous and silty clay loam soil adjacent to Shorkot city.
Ten treatments were tested in Completely Randomized Block Design. With the continue increase of the world population the requirements for food, freshwater, and fuel are bigger every day. This way an urgent necessity to develop, create, and practice a new type of agriculture, which has to be environmentally sustainable and adequate to the soils, is arising.
Among the stresses in plant agriculture worldwide, the increase of soil salinity is considered the. Salt-affected soils on Colorado range land.
High annual evaporation (and/or transpiration), low annual precipitation and restricted soil drainage, combine to create salt affected soils in depressions or lowlands. As the water evaporates, salts dissolved from the soil deposit and accumulate at the soil.
Test for EC in zones radiating out from the bull’s-eye of the problem area, where the soil is crusted with white.
Plant species of crops or forages with the salt tolerance to adapt to various zones. Choosing deep-rooted species will help to manage soil water. Plant salt. Coastal salt-affected soils a) Coastal salt-affected Gujarat soils of arid regions b) Deltaic coastal salt-affected West Bengal, Orissa, soils of the humid region Andhra Pradesh and Tamil Nadu c) Acid salt-affected soils Kerala 2.
Salt-affected soils. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean.
It can also come about through artificial processes such as irrigation and road salt. About Salt-Affected Soils. Salt is a naturally occurring element in soil. Although small amounts of salt are not harmful, high levels of salt can harm soil structure and make the soil inhospitable. Through its technical cooperation programme, and in partnership with the FAO, the IAEA trained and worked with 60 scientists from Iraq, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, the United Arab Emirates and Yemen, who are now using nuclear and isotopic techniques to improve crop yields on salt-affected soils.
Comparison of characteristics of salt affected soils Characteristic Saline soil Sodic soil or alkali soil Saline – sodic soil Soil pH ~ > 4 dS m-1 4 dS m-1 ESP 15 >15 Content in soil Excess soluble salts of calcium, magnesium and sodium Presence of excess exchangeable sodium on the exchange complex These are.
Salinity stress is one of the most vital abiotic stresses which results in significant damages of agricultural production, particularly in arid and semi-arid areas of the world. Salinity causes by high accumulation of soluble salt, especially NaCl in soil and water. Salinity hampers the growth and survival of many field crops such as rice, wheat, maize, cotton, sugarcane, and sorghum.
This study assesses the extent and location of salt-affected soils worldwide and their current land use and cover as well as the current technical and economic potential of biomass production from forestry plantations on these soils (biosaline forestry).
The global extent of salt-affected land amounts to app.Sustained and profitable production of crops on salt-affected soils requires appropriate on-farm management decisions. Growers must know how plants respond to salinity, the relative tolerances of different crops and their sensitivity at different stages of growth, and how different soil and environ-mental conditions affect salt-stressed plants.Salt-affected soils on rangeland in Colorado.
The U.S. Salinity Laboratory is a National Laboratory for research on salt-affected soil-plant-water systems. It resorts under the Agricultural Research Service (ARS) of the United States Department of Agriculture (USDA) and is .