Assessment of salt affected soils in India using GIS

Mandal, A. K.; Sharma, R. C.; Singh, Gurbachan

doi:10.1080/10106040902781002

Cited by 60 publications

(35 citation statements)

References 9 publications

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“…Soil degradation resulting from sodicity is a major obstacle for optimal utilization of land resources. In India, ~ 3·7‐mha land is affected by sodicity (Mandal et al ., ). As a category of salt‐affected soils, sodic soil are characterized by presence of excessive sodium ions (Na + ) in soil solution and in the exchange phase up to the levels, which can adversely affect the physical, chemical and biological properties of soils (Szabolcs, ; Liang et al , ; Ferreras et al , ; Tejada et al , ).…”

Section: Introductionmentioning

confidence: 97%

Amelioration of Sodic Soil for Wheat Cultivation Using Bioaugmented Organic Soil Amendment

et al. 2014

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A novel bioaugmented organic amendment (SF OA ) [consisted of vermicompost (pre-enriched with plant growth promoting fungi) mixed with pressmud and Azadirachta indica (A. Juss.) seed cake] was developed to reclaim sodic soil and support wheat production. A field trial of the SF OA application with/without chemical fertilizers conducted in completely randomized design with four replications to compare growth, yield and seed protein contents of wheat (Triticum aestivum L.) on sodic soil. The favourable changes occurred in different properties of amended soils were studied. A combined application of chemical fertilizer and SF OA significantly (p < 0·05) increased the number of spikelet per plant (63%) and weight of grains per ear (65%) in the amended soil compared with the control. Likewise, the grain yield, weight of 1000 grains and seed protein contents of wheat were significantly (p < 0·05) increased in the combined application compared with other treatments. The expression of protein bands with molecular weights of 36, 52 and 66 kDa were higher in seeds of wheat under the combined treatment. The improvement in wheat production was attributed to significant favourable changes in different soil characteristics such as bulk density, total organic C, alkaline phosphatase, β-glucosidase, dehydrogenase and cellulase activities that were increased by 234%, 181%, 234%, 176%, 189% and 150%, respectively, in case of amended soil under the combined treatment compared with the control. The tested SF OA may be recommended as soil amendment for reclaiming sodic soil and supporting wheat cultivation with better crop growth and yield in combination with chemical fertilizers on sodic soil.

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Section: Introductionmentioning

confidence: 97%

Amelioration of Sodic Soil for Wheat Cultivation Using Bioaugmented Organic Soil Amendment

et al. 2014

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“…More than 800 million hectares of land globally are salt-affected, including both saline and sodic soils, which represent more than 6% of the world’s total land area 1 . In India, 6.73 million ha are under salt-affected area 2 . Rice is considered salt-sensitive as it is not efficient in controlling the influx of Na + through the roots, leading to a rapid accumulation of toxic concentrations in aboveground parts 3 – 5 .…”

Section: Introductionmentioning

confidence: 99%

Identification of mega-environments and rice genotypes for general and specific adaptation to saline and alkaline stresses in India

Krishnamurthy

Sharma

et al. 2017

Sci Rep

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In the present study, a total of 53 promising salt-tolerant genotypes were tested across 18 salt-affected diverse locations for three years. An attempt was made to identify ideal test locations and mega-environments using GGE biplot analysis. The CSSRI sodic environment was the most discriminating location in individual years as well as over the years and could be used to screen out unstable and salt-sensitive genotypes. Genotypes CSR36, CSR-2K-219, and CSR-2K-262 were found ideal across years. Overall, Genotypes CSR-2K-219, CSR-2K-262, and CSR-2K-242 were found superior and stable among all genotypes with higher mean yields. Different sets of genotypes emerged as winners in saline soils but not in sodic soils; however, Genotype CSR-2K-262 was the only genotype that was best under both saline and alkaline environments over the years. The lack of repeatable associations among locations and repeatable mega-environment groupings indicated the complexity of soil salinity. Hence, a multi-location and multi-year evaluation is indispensable for evaluating the test sites as well as identifying genotypes with consistently specific and wider adaptation to particular agro-climatic zones. The genotypes identified in the present study could be used for commercial cultivation across edaphically challenged areas for sustainable production.

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“…Clay-minerals in these detrital deposits are mainly illite, kaolinite and chlorite also situ deposits have the highest values of aragonite. Generally, amount of organic matters in the sediments of Urmia Lake are low, but this value increase in wetlands and salt marshes of the Lake [21]. Location of studied area has been presented in …”

Section: Methodsmentioning

confidence: 99%

Soil Salinity and Alkalinity Map Preparation Based on Spatial Analysis of GIS (Case Study: Tabriz Plain)

Farajnia¹,

Yarahmadi²

2017

OJG

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Better management of agricultural fields is related to valuable information which can derived from soil salinity and alkalinity maps. These maps are considered as one of the most important factors which restrict plant growth as well as decline crops yield. The objective of this research was preparing of soil salinity and alkalinity maps in Tabriz plain over 50,000 hectares based on different techniques of spatial analysis in GIS software. For this mean, study area was divided in 1500 × 1500 m 2 grid cells. Then, geographical coordinate of each grid recorded in UTM system. So, they were transferred into GPS for navigating to the exact excavation location. After soil sampling and transferring to the lab, their EC and PH were measured in saturation extract of soil samples. So, spatial distribution of soil sampling points was prepared in form of point map by GIS software. Generalization of point information to surface was performed using different interpolation algorithms and based on standards of Soil and Water Research Institute. Accuracy of interpolated maps was evaluated due to the MAE and MBE values. The results showed that the lowest observed error is related to the Spline method and therefore, this method was used for spatial modeling of salinity and alkalinity maps in the intended area. The research findings demonstrated that from total of 50,000 hectares, only 3066 hectares were without salinity and alkalinity limitation (6.1%), 9066 hectares had low salinity and alkalinity (18.1%); 17,772 hectares had average limitation for salinity and alkalinity (35.6%) and the remaining 20,096 hectares had high and very high limitation for salinity and alkalinity.

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Assessment of salt affected soils in India using GIS

Cited by 60 publications

References 9 publications

Amelioration of Sodic Soil for Wheat Cultivation Using Bioaugmented Organic Soil Amendment

Amelioration of Sodic Soil for Wheat Cultivation Using Bioaugmented Organic Soil Amendment

Identification of mega-environments and rice genotypes for general and specific adaptation to saline and alkaline stresses in India

Soil Salinity and Alkalinity Map Preparation Based on Spatial Analysis of GIS (Case Study: Tabriz Plain)

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