18 results on '"Mandal, D."'
Search Results
2. Impact of ZnO nanoparticles on electrical characteristics of herbal dye-based organic Schottky diode
- Author
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Das, Aloke Kumar, Mandal, R, Chakraborty, K, and Mandal, D K
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- 2022
- Full Text
- View/download PDF
3. Revisiting agro-ecological sub-regions of India - a case study of two major food production zones.
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Mandal, C., Mandal, D. K., Bhattacharyya, T., Sarkar, D., Pal, D. K., Prasad, Jagdish, Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Srivastava, R., Sen, T. K., Chatterji, S., Chandran, P., Ray, S. K., Patil, N. G., Obireddy, G. P., Mahapatra, S. K., and Kumar, K. S. Anil
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AGRICULTURE , *FOOD production , *AGRICULTURAL productivity , *SOIL management , *SOILS - Abstract
The sustenance of food and nutritional security are the major challenges of the 21st century. The domestic food production needs to increase per annum at the rate of 2% for cereals and 0.6% for oilseeds and pulses to meet the demand by 2030. The Indo-Gangetic Plains (IGP) and the black soil regions (BSR) are the two major food production zones of the country. Since irrigation potential is limited and expansion of irrigated area is tardy, rainfed agriculture holds promise to satisfy future food needs. Frontline demonstrations of these two regions have shown that there is a large gap at the farmers' and achievable levels of yields. This gap can be filled by adopting scientific approach of managing the natural resources. There is tremendous pressure of biotic and abiotic stresses hindering the crop production and that warrants for a systematic appraisal of natural resources. The National Bureau of Soil Survey and Land Use Planning (NBSS&LUP) under the Indian Council of Agricultural Research (ICAR) divided the country into 60 agro-ecological sub-regions (AESRs) in 1994 by superimposing maps on natural resources like soils, climate and length of growing period (LGP) for crops and other associated parameters. With the passage of nearly two decades and the advent of modern facilities of database management and improved knowledge base on natural resources, a need was felt to revise the existing AESR map to reach near the ground reality of crop performance. The new database stored in soil and terrain digital database (SOTER) has helped in modifying the AESR delineations of the BSR (76.4 m ha) and the IGP (52.01 m ha). The estimated available water content, saturated hydraulic conductivity and use of pedo-transfer functions in assessing the drainage conditions and soil quality have helped in computing with improved precision the LGP, and revise the earlier AESRs in BSR and IGP areas. This innovative exercise will be useful for the future AESR-based agricultural land use planning. [ABSTRACT FROM AUTHOR]
- Published
- 2014
4. Permissible soil loss limits for different physiographic regions of West Bengal.
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Lenka, Narendra Kumar, Mandal, D., and Sudhishri, S.
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LAND degradation , *SOIL erosion , *ECOLOGICAL heterogeneity , *PHYSIOGRAPHIC provinces , *SOIL conservation - Abstract
Land degradation due to water erosion is a major impediment for optimum land productivity in West Bengal (WB). Sustainable development of the state needs appropriate land-use planning taking into account the heterogeneity in soil and land resources. In this study, the maximum permissible soil loss rates (T values) were computed for 115 mapping units of WB by integrating the most sensitive soil indicators such as infiltration rate, bulk density, water stable aggregates, organic carbon and fertility status to assess soil quality governing soil resistibility to erosion. For each mapping unit, indicator soil attribute values were quantitatively expressed in the 0 to 1 scale and an aggregate score was computed from the attribute scores and the corresponding weights. The results suggested a wide difference in the T values among the regions and mapping units, with values ranging from 2.5 to 12.5 Mg ha-1 yr-1. In the state as a whole, about 88% of the area has 'T' value of 12.5 Mg ha-1 yr-1. The relatively plain lands in the Indo-Gangetic plain, coastal and delta plain and the Bengal basin have a higher soil loss tolerance of about 4.0 Mg ha-1 yr-1 than the hilly and undulating regions in the Eastern Himalaya and Eastern plateau regions. The information generated will serve as a useful guide for devising differential conservation and resource use plans on the basis of soil resource potential. [ABSTRACT FROM AUTHOR]
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- 2014
5. Identification of suitable areas for aerobic rice cultivation in the humid tropics of eastern India.
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Mandal, D. K., Mandal, C., Raja, P., and Goswami, S. N.
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PLANTING , *RICE , *NITROUS oxide , *METHANE , *GLOBAL warming , *CROP yields - Abstract
In view of the depleting availability of water for agriculture, higher emission of nitrous oxide and methane from low land rice cultivation and their deleterious impact on global warming phenomenon, the present study stressed the need for cultivation of aerobic rice. The study focuses on identifying and mapping suitable sites in eastern India through computation of rice aridity index from soils and climatic data and proposing suitability criteria model and assessing potential yield. This study gains further significance since aerobic rice cultivation could improve the upland production efficiency and helps reduction of greenhouse gases. [ABSTRACT FROM AUTHOR]
- Published
- 2010
6. Watershed-scale runoff-erosion-carbon flux dynamics: current scope and future direction of research.
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Patra, S., Mandal, D., Mishra, P. K., Ojasvi, P. R., Patra, J. P., Kumar, G., Kaushal, R., and Alam, N. M.
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CARBON in soils , *HUMUS , *SOIL erosion , *SOIL particles , *RUNOFF , *SOIL quality , *PLANT litter , *LAND management - Abstract
The article examines the scope and future direction of research on watershed-scale runoff-erosion-carbon flux dynamics. Topics discussed include the role of soil organic matter dynamics and quantitative changes affected by natural conditions and site-specific management, soil erosion which involves the detachment, transport and deposition of soil particles. Other topics explored include land management, soil environment and plant litter quality, and land-use change.
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- 2015
7. Distribution of zeolitic soils in India.
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Bhattacharyya, T., Chandran, P., Ray, S. K., Pal, D. K., Mandal, C., and Mandal, D. K.
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CALCIUM in soils , *ZEOLITES , *REMOTE sensing , *VERTISOLS , *X-ray diffraction , *SEDIMENTS , *SMECTITE - Abstract
Calcium-rich zeolites control naturally occurring chemical degradation in the black soils (Vertisols and their intergrades). With the help of modern tools such as remote sensing, geographic information system, soil database, geological information, topography and other related datasets, an attempt was made to update the distribution of zeolitic soils in India. To ascertain the presence of Ca-rich zeolites in soils, mineralogical information was generated using X-ray diffraction techniques for the selected soils from the Indo-Gangetic Plains and the black soil region (BSR). The zeolitic soils are mostly confined in the pediments (sloping regions of the upland) of the Deccan plateau in BSR, although a few are also found along the valley floor. The IGP, on the other hand, hosts the zeolitic black soils along the drainage channels in the valley floor where the basaltic alluvium deposited the smectite and clay-rich sediments. The study indicates Ca-rich zeolitic soils in India to occupy an area of ∼2.8 m ha, of which BSR and IGP constitute ∼92% and ∼8% respectively. The zeolites are mostly concentrated in the drier tracts of the country and help in maintaining soil health against natural soil degradation. While the occurrence of Ca-rich black soils in BSR was known, those in the IGP are new findings. With the help of the available information, we have generated state-of-art information approximation map on the distribution of Ca-rich zeolites in Indian soils. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
8. Land evaluation for major crops in the Indo-Gangetic Plains and black soil regions using fuzzy model.
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Chatterji, S., Tiwary, P., Sen, T. K., Prasad, J., Bhattacharyya, T., Sarkar, D., Pal, D. K., Mandal, D. K., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Chandran, P., Ray, S. K., Patil, N. G., Obireddy, G. P., and Mahapatra, S. K.
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LAND use planning , *SOIL management , *SOIL productivity , *SOILS , *AGRICULTURE - Abstract
Land evaluation is carried out to assess the suitability of land for a specific use. Land evaluation procedures focus increasingly on the use of quantitative procedures to enhance the qualitative interpretation of land resource surveys. Conventional Boolean retrieval of soil survey data and logical models for assessing land suitability, treat both spatial units and attribute value ranges as exactly specifiable quantities. They ignore the continuous nature of soil and landscape variation and uncertainties in measurement, which may result in the failure to correctly classify sites that just fail to match strictly defined requirements. The objective of this article is to apply fuzzy model to land suitability evaluation for major crops in the 15 benchmark sites of the Indo- Gangetic Plains (IGP) and 17 benchmark sites of the black soil regions (BSR). Minimum datasets of land characteristics considered relevant to rice and wheat in the IGP and cotton and soybean in the BSR were identified to enhance pragmatic value of land evaluation. The use of fuzzy model is intuitive, robust and helpful for land suitability evaluation and classification, especially in applications in which subtle differences in land characteristics are of a major interest, such as development of threshold values of land characteristics. [ABSTRACT FROM AUTHOR]
- Published
- 2014
9. Soil information system: use and potentials in humid and semi-arid tropics.
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Bhattacharyya, T., Sarkar, D., Ray, S. K., Chandran, P., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., Chatterji, S., Patil, N. G., Obireddy, G. P., Mahapatra, S. K., and Kumar, K. S. Anil
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AGRICULTURE , *AGRICULTURAL productivity , *SOIL management , *SOILS , *SOIL productivity , *INFORMATION storage & retrieval systems -- Agriculture - Abstract
The articles presented in this special section emanated from the researches of consortium members of the National Agricultural Innovative Project (NAIP, Component 4) of the Indian Council of Agricultural Research (ICAR), New Delhi. These researches have helped develop a soil information system (SIS). In view of the changing scenario all over the world, the need of the hour is to get assistance from a host of researchers specialized in soils, crops, geology, geography and information technology to make proper use of the datasets. Equipped with the essential knowledge of data storage and retrieval for management recommendations, these experts should be able to address the issues of land degradation, biodiversity, food security, climate change and ultimately arrive at an appropriate agricultural land-use planning. Moreover, as the natural resource information is an essential prerequisite for monitoring and predicting global environmental change with special reference to climate and land use options, the SIS needs to be a dynamic exercise to accommodate temporal datasets, so that subsequently it should result in the evolution of the soil information technology. The database developed through this NAIP would serve as an example of the usefulness of the Consortium and the research initiative of ICAR involving experts from different fields to find out the potentials of the soils of humid and semi-arid bioclimatic systems of the country [ABSTRACT FROM AUTHOR]
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- 2014
10. InfoCrop-cotton simulation model - its application in land quality assessment for cotton cultivation.
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Venugopalan, M. V., Tiwary, P., Ray, S. K., Chatterji, S., Velmourougane, K., Bhattacharyya, T., Bandhopadhyay, K. K., Sarkar, D., Chandran, P., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Kumar, K. S. Anil, Srivastava, A., Das, T. H., Singh, R. S., and Mandal, C.
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LAND use planning , *SOIL management , *SOIL productivity , *SOILS , *SOIL surveys - Abstract
Crop simulation models have emerged as powerful tools for estimating yield gaps, forecasting production of agricultural crops and analysing the impact of climate change. In this study, the genetic coefficients for Bt hybrids established from field experiments were used in the InfoCrop-cotton model, which was calibrated and validated earlier to simulate the cotton production under different agro-climatic conditions. The model simulated results for Bt hybrids were satisfactory with an R2 value of 0.55 (n = 22), d value of 0.85 and a root mean square error of 277 kg ha-1, which was 11.2% of the mean observed. Relative yield index (RYI) defined as the ratio between simulated rainfed (water-limited) yield to potential yield, was identified as a robust land quality index for rainfed cotton. RYI was derived for 16 representative benchmark (BM) locations of the black soil region from long-term simulation results of InfoCrop-cotton model (based on 11-40 years of weather data). The model could satisfactorily capture subtle differences in soil variables and weather patterns prevalent in the BM locations spread over 16 agro-ecological sub-regions (AESRs) resulting in a wide range of mean simulated rainfed cotton yields (482-4393 kg ha-1). The BM soils were ranked for their suitability for cotton cultivation based on RYI. The RYI of black soils (vertisols) ranged from 0.07 in Nimone to 0.80 in Panjari representing AESR (6.1) and AESR (10.2) respectively, suggesting that Panjri soils are better suited for rainfed cotton. [ABSTRACT FROM AUTHOR]
- Published
- 2014
11. Natural resources of the Indo-Gangetic Plains: a land-use planning perspective.
- Author
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Patil, N. G., Tiwary, P., Bhattacharyya, T., Chandran, P., Sarkar, D., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., Chatterji, S., Ray, S. K., Obireddy, G. P., and Mahapatra, S. K.
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AGRICULTURE , *AGRICULTURAL productivity , *SOIL management , *SOILS , *SOIL productivity - Abstract
Current status of land/soil resources of the Indo- Gangetic Plains (IGP) is analysed to highlight the issues that need to be tackled in near future for sustained agricultural productivity. There are intraregional variations in soil properties, cropping systems; status of land usage, groundwater utilization and irrigation development which vary across the subregions besides demographies. Framework for land use policy is suggested that includes acquisition of farm-level data, detailing capability of each unit to support a chosen land use, assess infrastructural support required to meet the projected challenges and finally develop skilled manpower to effectively monitor the dynamics of land use changes. [ABSTRACT FROM AUTHOR]
- Published
- 2014
12. Soil and land quality indicators of the Indo-Gangetic Plains of India.
- Author
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Ray, S. K., Bhattacharyya, T., Reddy, K. R., Pal, D. K., Chandran, P., Tiwary, P., Mandal, D. K., Mandal, C., Prasad, J., Sarkar, D., Venugopalan, M. V., Velmourougane, K., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Srivastava, R., Sen, T. K., and Chatterji, S.
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LAND use planning , *SOIL management , *SOIL biodiversity , *SOIL productivity , *AGRICULTURE - Abstract
Sustaining soil and land quality under intensive land use and fast economic development is a major challenge for improving crop productivity in the developing world. Assessment of soil and land quality indicators is necessary to evaluate the degradation status and changing trends of different land use and management interventions. During the last four decades, the Indo-Gangetic Plains (IGP) which covers an area of about 52.01 m ha has been the major food producing region of the country. However at present, the yield of crops in IGP has stagnated; one of the major reasons being deterioration of soil and land quality. The present article deals with the estimation of soil and land quality indicators of IGP, so that, proper soil and land management measures can be taken up to restore and improve the soil health. Use of principal component analysis is detailed to derive the minimum dataset or indicators for soil quality. The article also describes spatial distribution of soil and land quality with respect to major crops of IGP. [ABSTRACT FROM AUTHOR]
- Published
- 2014
13. Impact of management levels and land-use changes on soil properties in rice-wheat cropping system of the Indo-Gangetic Plains.
- Author
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Sidhu, G. S., Bhattacharyya, T., Sarkar, D., Ray, S. K., Chandran, P., Pal, D. K., Mandal, D. K., Prasad, J., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., Chatterji, S., Patil, N. G., Obireddy, G. P., Mahapatra, S. K., and Kumar, K. S. Anil
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SOILS , *LAND use planning , *SOIL management , *SOIL productivity , *AGRICULTURE , *CROPPING systems - Abstract
Five benchmark soils, namely Fatehpur (Punjab) and Haldi (Uttarakhand) non-sodic soils, Zarifa Viran (Haryana), Sakit and Itwa sodic soils (Uttar Pradesh) representing Trans, Upper, Middle and Central Indo- Gangetic Plains (IGP) were revisited for studying the morphological, physical and chemical properties of soils at low and high management levels to monitor changes in soil properties due to the impact of landuse as well as management levels. The results indicate an increase in bulk density (BD) below the plough layer, and build up of organic carbon (OC) and decline in pH in surface layers of Zarifa Viran, Sakit and Itwa sodic soils under high management. The concentration of carbonates and bicarbonates in sodic soils decreased due to adaptation of rice-wheat system. The build-up of OC and decrease of pH in surface soils under rice- wheat system enhanced the soil health. Increase in BD in subsurface soils, however, is a cause of concern for sustaining rice-wheat cropping system. Soil management interventions such as tillage, conservation agriculture and alternate cropping system have been suggested for improved soil health and productivity. [ABSTRACT FROM AUTHOR]
- Published
- 2014
14. Impacts of bioclimates, cropping systems, land use and management on the cultural microbial population in black soil regions of India.
- Author
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Velmourougane, K., Venugopalan, M. V., Bhattacharyya, T., Sarkar, D., Ray, S. K., Chandran, P., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Kumar, K. S. Anil, Srivastava, A., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., and Chatterji, S.
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LAND use planning , *AGRICULTURAL development , *HYDRAULIC conductivity , *BLACK cotton soil , *SOIL productivity , *AGRICULTURE - Abstract
The present study documents the biological properties of the black soil region (BSR) of India in terms of culturable microbial population. Besides surface microbial population, subsurface population of individual soil horizons is described to improve the soil information system. An effort has been made to study the depth-wise distribution and factors (bioclimates, cropping systems, land use, management practices and soil properties) influencing the microbial population in the soils of the selected benchmark spots representing different agro-ecological sub-regions of BSR. The microbial population declined with depth and maximum activity was recorded within 0-30 cm soil depth. The average microbial population (log10 cfu g-1) in different bioclimates is in decreasing order of SHm > SHd > SAd > arid. Within cropping systems, legumebased system recorded higher microbial population (6.12 log10 cfu g-1) followed by cereal-based system (6.09 log10 cfu g-1). The mean microbial population in different cropping systems in decreasing order is legume > cereal > sugarcane > cotton. Significantly higher (P < 0.05) microbial population has been recorded in high management (6.20 log10 cfu g-1) and irrigated agrosystems (6.33 log10 cfu g-1) compared to low management (6.12 log10 cfu g-1) and rainfed agrosystems (6.17 log10 cfu g-1). The pooled analysis of data inclusive of bioclimates, cropping systems, land use, management practices, and edaphic factors indicates that microbial population is positively influenced by clay, fine clay, water content, electrical conductivity, organic carbon, cation exchange capacity and base saturation, whereas bulk density, pH, calcium carbonate and exchangeable magnesium percentage have a negative effect on the microbial population. [ABSTRACT FROM AUTHOR]
- Published
- 2014
15. Soil physical quality of the Indo-Gangetic Plains and black soil region.
- Author
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Raychaudhuri, Mausumi, Kundu, D. K., Kumar, Ashwani, Mandal, K. G., Raychaudhuri, S., Kar, G., Bhattacharyya, T., Sarkar, D., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., and Chatterji, S.
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LAND use planning , *AGRICULTURAL development , *SOIL productivity , *HYDRAULIC conductivity , *BLACK cotton soil , *AGRICULTURE - Abstract
Understanding the physical quality of soil that influences its hydraulic behaviour helps in formulating appropriate water management strategies for sustainable crop production. Saturated hydraulic conductivity (Ks) is a key factor governing the hydraulic properties of soils. Ks can be estimated through various techniques. In the present article we have developed and validated the regression models to predict Ks of the soils of the Indo-Gangetic Plains (IGP) and the black soil regions (BSR) under different bioclimatic systems. While particle size distribution was found to be a key factor to predict Ks of the BSR soils, organic carbon was found useful for the IGP soils. Moreover, the models for Ks of both soils were strengthened by putting in CaCO3 and exchangeable sodium percentage content. It seems there is ample scope to study the interaction process for revising Ks to desired levels through management practices in these two important food-growing zones. An index of soil physical quality, derived from the inflection points of the soil moisture characteristic curves could well explain the impact of management practices on soil physical quality. [ABSTRACT FROM AUTHOR]
- Published
- 2014
16. Georeferenced soil information system: assessment of database.
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Bhattacharyya, T., Sarkar, D., Ray, S. K., Chandran, P., Pal, D. K., Mandal, D. K., Prasad, J., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Mandal, C., Srivastava, R., Sen, T. K., Chatterji, S., Patil, N. G., Obireddy, G. P., Mahapatra, S. K., and Kumar, K. S. Anil
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LAND use , *AGRICULTURAL development , *DECISION making , *FORESTRY & community , *AGRICULTURAL landscape management - Abstract
Land-use planning is a decision-making process that facilitates the allocation of land to different uses that provide optimal and sustainable benefit. As land-use is shaped by society-nature interaction, in land-use planning different components/facets play a significant role involving soil, water, climate, animal (ruminant/ non-ruminant) and others, including forestry and the environment needed for survival of mankind. At times these components are moderated by human interference. Thus land-use planning being a dynamic phenomenon is not guided by a single factor, but by a complex system working simultaneously, which largely affects the sustainability. To address such issues a National Agricultural Innovation Project (NAIP) on 'Georeferenced soil information system for land-use planning and monitoring soil and land quality for agriculture' was undertaken to develop threshold values of land quality parameters for land-use planning through quantitative land evaluation and crop modelling for dominant cropping systems in major agro-ecological sub-regions (AESRs) representing rice-wheat cropping system in the Indo-Gangetic Plains (IGP) and deep-rooted crops in the black soil regions (BSR). To assess the impact of landuse change, threshold land quality indicator values are used. A modified AESR map for agricultural landuse planning is generated for effective land-use planning. [ABSTRACT FROM AUTHOR]
- Published
- 2014
17. Development of soil and terrain digital database for major food-growing regions of India for resource planning.
- Author
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Chandran, P., Tiwary, P., Bhattacharyya, T., Mandal, C., Prasad, J., Ray, S. K., Sarkar, D., Pal, D. K., Mandal, D. K., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Srivastava, R., Sen, T. K., Chatterji, S., Patil, N. G., Obireddy, G. P., and Mahapatra, S. K.
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LAND use planning , *INFORMATION storage & retrieval systems , *COMPUTERS in agriculture , *WEBSITES , *AGRICULTURAL development , *CLIMATE change , *SOIL science - Abstract
Soil information system in SOTER (soil and terrain digital database) framework is developed for the Indo- Gangetic Plains (IGP) and black soil regions (BSR) of India with the help of information from 842 georeferenced soil profiles including morphological, physical and chemical properties of soils in addition to the site characteristics and climatic information. The database has information from 82 climatic stations that can be linked with the other datasets. The information from this organized database can be easily retrieved for use and is compatible with the global database. The database can be updated with recent and relevant data as and when they are available. The database has many applications such as inputs for refinement of agroecological regions and sub-regions, studies on carbon sequestration, land evaluation and land (crop) planning, soil erosion, soil quality, carbon and crop modelling and other climate change related research. This warehouse of information in a structured framework can be used as a data bank for posterity. [ABSTRACT FROM AUTHOR]
- Published
- 2014
18. Pedotransfer functions: a tool for estimating hydraulic properties of two major soil types of India.
- Author
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Tiwary, P., Patil, N. G., Bhattacharyya, T., Chandran, P., Ray, S. K., Karthikeyan, K., Sarkar, D., Pal, D. K., Prasad, J., Mandal, C., Mandal, D. K., Sidhu, G. S., Nair, K. M., Sahoo, A. K., Das, T. H., Singh, R. S., Srivastava, R., Sen, T. K., Chatterji, S., and Obireddy, G. P.
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LAND use planning , *INFORMATION storage & retrieval systems , *WEBSITES , *COMPUTERS in agriculture , *AGRICULTURAL development , *HYDRAULIC conductivity , *SOIL productivity , *SOIL science - Abstract
In recent years, georeferenced soil information system has gained significance in agricultural land-use planning and monitoring the changes in soil properties/ soil quality induced by land-use changes. The spatiotemporal information on saturated hydraulic conductivity (sHC) and soil water retention-release behaviour is essential for proper crop and land-use planning. The sHC greatly influences the drainage process and soil water retention-release behaviour, ultimately affecting the crop growth and yield. However, sHC and water retention are not measured in a routine soil survey and are generally estimated from easily measurable soil parameters through pedotransfer functions (PTFs). In the present study, PTFs for sHC and water retention were developed separately for the soils of two food-growing zones of India (the Indo-Gangetic Plains (IGP) and the black soil region (BSR)). For the IGP soils, sHC is affected by the increased subsoil bulk density due to intensive cultivation. In BSR, presence of Na+ and Mg++ ions affects the drainage and water retention of the soils. Therefore, these soil parameters were considered while developing the PTFs using stepwise regression technique in SPSS. The validation of PTFs was found to be satisfactory with low RMSE values and high model efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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