Article
Environmental Sciences
Yugang Wang, Zhufeng Wang, Feng Liang, Xin Jing, Wenting Feng
Summary: The application of flue gas desulfurization gypsum (FGDG), a byproduct from coal-fired power plants, significantly improves the quality and productivity of saline-sodic soils across China, increasing crop yield. Improvements in soil quality are observed through the reduction of soil exchangeable sodium percentage (ESP) and pH, while there are concerns about potential threats from increased heavy metal elements.
Article
Geosciences, Multidisciplinary
Mamoun A. Gharaibeh, Ammar A. Albalasmeh, Christopher Pratt, Ali El Hanandeh
Summary: Soil sodicity can be best evaluated using the exchangeable sodium percentage (ESP), but this can be time-consuming. Alternatively, the sodium adsorption ratio (SAR) is a simpler index commonly used for estimating soil sodicity. This study aimed to estimate ESP using four approaches, with the GRNN model providing the most accurate estimates and handling data heteroscedasticity effectively. Meanwhile, traditional dilution extracts showed a strong correlation between soil ESP and SAR, while the CF-theta(SP) approach performed better for predicting ESP. Additionally, EC1:5 gave reasonably accurate estimates of ESP and could be used as a screening test for sodicity assessment.
Article
Plant Sciences
Chuncheng Liu, Bingjian Cui, Juan Wang, Chao Hu, Pengfei Huang, Xiaojun Shen, Feng Gao, Zhongyang Li
Summary: This study explores the safe and rational utilization of brackish water in areas with scarce freshwater resources. The results show that short-term irrigation using reclaimed water does not cause secondary soil salinization. Rotational irrigation with brackish-reclaimed water increases the content of exchangeable Ca2+, K+, and Mg2+ in the soil, while decreasing the content of exchangeable Na+. The risk of secondary soil salinization is lowest under rotational irrigation, followed by mixed irrigation and brackish water irrigation.
Article
Soil Science
Diriba Bane Nemera, David Yalin, Guy J. Levy, Shabtai Cohen, Moshe Shenker, Roee Gothelf, Jorge Tarchitzky, Asher Bar-Tal
Summary: Recent studies have shown that long-term irrigation with treated wastewater can lead to land degradation and reduction in crop performance due to the addition of salts and organic compounds in clayey soils. This study investigated the effects of different remediation and mitigation methods on soil properties after long-term irrigation with treated wastewater. The results showed that using freshwater and a mixture of treated wastewater and freshwater significantly reduced soil salinity and sodicity compared to using treated wastewater. The study suggests that these methods can be effective in reducing soil salinity and promoting sustainable agriculture in regions facing water scarcity.
SOIL & TILLAGE RESEARCH
(2023)
Article
Geography, Physical
Keerthika N. Ranathunga, Peter A. Finke, Qiuzhen Yin, Ann Verdoodt, YanYan Yu
Summary: The study proposed a new approach combining process-based soil and climate simulations to quantify time series data for estimating changes in soil stocks and ecosystem services under changing climate. Results showed that under increased erosion, exchangeable bases increased while soil organic carbon decreased, and metrics such as carbon sequestration capacity, water yield, and evapotranspiration ratio gradually decreased towards semi-arid regions on the Chinese Loess Plateau.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Environmental Sciences
Bewuket B. Tefera, Haimanote K. Bayabil, Zhaohui Tong, Fitsum T. Teshome, Peng Wenbo, Yuncong C. Li, Niguss Solomon Hailegnaw, Bin Gao
Summary: Salinity affects over 33% of irrigated farmland globally. Developing a low-cost, safe, and effective material as a soil salinity mitigation option would be of significant importance. This study proposed to synthesize a hydrogel using liquefied biomass from sugarcane bagasse, polyvinyl alcohol, and sodium tetraborate decahydrate. The effectiveness of the produced hydrogel in mitigating soil salinity was evaluated based on an incubation experiment at two salinity levels (5 and 10 dS m-1).
Article
Agriculture, Multidisciplinary
Nan Li, Ehsan Zare, Muddassar Muzzamal, Michael Sefton, John Triantafilis
Summary: In Australia, sodic soil is defined as having an exchangeable sodium percentage (ESP) greater than 6% in the top meter. Sodicity is common in Queensland, especially in areas where sugarcane is grown. Digital soil mapping (DSM) with digital data such as elevation, gamma-ray spectrometry, and soil apparent electrical conductivity (ECa) can be used to effectively improve sodicity. When no relationship between digital and soil data exists, wavelet transformation can be employed. The study aims to predict topsoil ESP using a linear mixed model (LMM) with digital data and decomposed components obtained through wavelet transform at different scales. The results show that the LMM prediction using raw digital data alone or in combination was poor, but moderate to good agreement was achieved when using decomposed data at certain scales. Additionally, the combination of decomposed elevation with gamma-ray and ECa further enhanced the prediction of ESP. Overall, DSM offers the potential for effective management of sodicity and application of appropriate ameliorants.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Agronomy
Megahed M. Amer, Hesham M. Aboelsoud, Eman M. Sakher, Ahmed A. Hashem
Summary: This study aimed to improve the soil properties, yield, and water productivity of faba beans in salt-affected soils through the application of gypsum, compost, and nanoparticles. The results showed that the combined application of gypsum and compost, as well as the foliar application of manganese and selenium nanoparticles, significantly improved soil salinity, sodium content, soil porosity, and infiltration. It also increased the yield and water productivity of faba beans.
Article
Environmental Sciences
Ilker Angin, Ekrem Lutfi Aksakal, Serdar Sari, Murat Alanyalioglu
Summary: This study evaluated the possibility of using ammonium hexacyanoferrate (II) (AH) and ammonium perchlorate (AP) to harvest excessive salts from saline-sodic soils. The results showed that the application of AH and AP effectively increased the concentration of salts on the outer surface of the soil, leading to improved pH and decreased exchangeable sodium content. This technique is particularly useful for reclamation of saline-sodic soils in arid climates.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Narges Kariminejad, Hamid Reza Pourghasemi, Sedigheh Maleki, Mohsen Hosseinalizadeh
Summary: The study analyzed the impact of exchangeable sodium percentage on soil structure and drainage, and used multiple models for prediction and evaluation. The results indicate that sodium adsorption ratio and slope steepness are the most important factors affecting ESP.
GEOCARTO INTERNATIONAL
(2022)
Article
Agronomy
Xiquan Wang, Hongyuan Zhang, Zhizhong Zhang, Chenping Zhang, Kai Zhang, Huancheng Pang, Stephen M. Bell, Yuyi Li, Ji Chen
Summary: The relationship between salt-affected soils and their adjacent river systems is important for addressing the challenges of soil salinization in agriculture. A study found that the distance along the river is closely related to the level of soil salinization, with soil salinity increasing as the distance along the river increases. This is likely due to the leaching of ions from upstream soils and their accumulation in downstream soils.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Environmental Sciences
Yumei Mao, Xiaoping Li
Summary: The study aims to explore the desalting effect of flue gas desulfurization gypsum (FGDG) on coastal saline-sodic soils and evaluate changes in soil chemical properties, plant growth, and heavy metal contents. The experiments showed that FGDG effectively improved the chemical properties of saline-sodic soils and achieved desalting effects within 1 year. Different soil textures responded differently to FGDG application.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Soil Science
Jisheng Xu, Wei Gao, Bingzi Zhao, Meiqi Chen, Lei Ma, Zhongjun Jia, Jiabao Zhang
Summary: Sodicity/salinity significantly impact soil microbial communities, with strong influences on bacterial community compositions compared with other soil properties. Decreases in sodicity/salinity result in reductions of potential biomarkers for high community tolerance to salt or soda, while taxa associated with decomposition of organic matter and nutrient transformations increase.
APPLIED SOIL ECOLOGY
(2021)
Article
Environmental Sciences
Shuo Zhao, Fei Yu, Cheyu Zhai, Rui Zhong, Ying Zhao, Yong Wang, Juan Zhang, Qingfeng Meng
Summary: Long-term cattle manure application can improve soil structure and increase stability of soil aggregates in salt-affected soil.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Di Wu, Zhibo Feng, Wenqi Gu, Yuning Wang, Zifan Liu, Wenjia Wang, Yuxue Zhang, Weiming Zhang, Wenfu Chen
Summary: Biochar amendment can improve rice growth and soil fertility, leading to increased rice production in cold areas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agronomy
Harmit Singh Thind, Yadvinder- Singh, Sandeep Sharma, Deepak Goyal, Varinderpal- Singh, Bijay- Singh
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
(2018)
Article
Plant Sciences
Arun Shankar, R. K. Gupta, Bijay Singh
JOURNAL OF PLANT NUTRITION
(2019)
Review
Chemistry, Analytical
Bijay-Singh, Ali M. Ali
Article
Agronomy
Arun Shankar, R. K. Gupta, Bijay-Singh
EXPERIMENTAL AGRICULTURE
(2020)
Article
Plant Sciences
Varinderpal-Singh, Kunal, Sandeep Sharma, S. K. Gosal, Rita Choudhary, Reena Singh, Alok Adholeya, Bijay-Singh
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2020)
Article
Agronomy
Ali M. Ali, Sherif M. Ibrahim, Wahby M. Hassany, Ashraf N. El-Sadek, Bijay-Singh
Summary: Fertilizer nitrogen management in wheat at jointing stage using atLeaf meter and leaf colour chart resulted in higher grain yield levels and higher use efficiency compared to standard treatment, with an average of 57-60 kg N ha(-1) less fertilizer use.
EXPERIMENTAL AGRICULTURE
(2021)
Article
Agronomy
Bhupinder S. Farmaha, Pritpal-Singh, Bijay-Singh
Summary: The research combined a water balance model, a nitrate leaching model and geographic information system to assess the nitrate leaching from fields under rice-wheat cropping system in the riparian wetlands in Punjab, India. The results showed that the nitrate concentration in groundwater exceeded the WHO drinking water safety standard during December-January. The modeling approach provided an efficient quantitative assessment of nitrate pollution in groundwater, indicating that current fertilizer-N management practices will not significantly impact nitrate concentrations in the long-term.
Article
Agriculture, Multidisciplinary
Varinderpal-Singh, Kunal, Rajinder Kaur, Mehtab-Singh, Mohkam-Singh, Harpreet-Singh, Bijay-Singh
Summary: The study established prediction models for grain yield and nitrogen uptake using NDVI measurements with the GreenSeeker sensor in different cultivar groups of basmati rice. Sensing the crop at the panicle initiation stage provided accurate predictions for grain yield and N uptake potential. This demonstrates that in-season NDVI data can be used to predict yield and N uptake potential in basmati rice.
PRECISION AGRICULTURE
(2022)
Article
Environmental Sciences
Juhi, Yanendra Kumar Singh, Bijay Singh, Anupam Das, Anshuman Kohli, Rakesh Kumar, Shweta Shambhavi, Rajeev Padbhushan
Summary: Fertigation in rice-based cropping systems has drawn attention from farmers for its potential to increase crop yield and improve fertilizer use efficiency. This study examined the impact of fertigation on soil organic carbon pools and yield in zero-till direct-seeded rice-based cropping systems. The results showed that fertigation levels significantly influenced both crop yield and soil organic matter content.
Article
Green & Sustainable Science & Technology
Rajeev Kumar Gupta, Rajan Bhatt, Asma A. Al-Huqail, Manzer H. Siddiqui, Ritesh Kumar
Summary: Field experiments were conducted to establish precision N management technology for nitrogen topdressings in Bt cotton and quantify nitrous oxide emissions. The results showed that fertilizer management based on leaf N concentration led to adequate total N uptake and respectable yield. Application of 45-60 kg N ha(-1) at 40 DAS and LCC-based application at 55 DAS achieved seed cotton yields comparable to adding 150 kg N ha(-1) based on soil test, while reducing nitrous oxide emissions.
Article
Soil Science
Varinderpal-Singh, Kunal, Mehtab-Singh, Bijay-Singh
Summary: This study conducted yield prediction models using optical sensing tools for basmati rice and validated the effectiveness of spectral indices. The study found that leaf color charts are an economical tool that can be used by small farmers in developing countries.
Article
Agronomy
Bijay-Singh
Summary: Nitrogen use efficiency is crucial for food security and environmental protection. India needs to improve crop and fertilizer management to achieve higher nitrogen use efficiency.
AGRICULTURAL RESEARCH
(2023)
Article
Agronomy
Varinderpal Singh, Rajan Kunal, Janpriya Kaur, Rajan Bhatt, Satwinderjit Kaur, Buta Singh Dhillon, K. B. Singh, Shaminder Singh, Seema Sharma, Bijay Singh
Summary: By using a leaf color chart, a suitable nitrogen management strategy can be formulated to maximize the yield of basmati rice, reduce gas emissions, and decrease the amount of fertilizer used.
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
(2023)
Article
Soil Science
Ali M. Ali, Ahmed M. Saudi, Ashraf N. El-Sadek, Bijay-Singh
Summary: This research aimed to develop a critical nitrogen dilution curve for wheat grown in calcareous soils and formulate a model for estimating wheat's nitrogen fertilizer requirement at different growth stages. The study induced variability in plant growth by applying six nitrogen fertilization rates across multiple site-years. Aboveground shoot biomass and nitrogen concentration were determined throughout the growing season, and a critical nitrogen dilution curve was developed. This curve was then used to develop a nitrogen fertilizer topdressing strategy.
NUTRIENT CYCLING IN AGROECOSYSTEMS
(2023)
Review
Multidisciplinary Sciences
Bijay-Singh, Eric Craswell
Summary: The increasing use of global fertilizer nitrogen has led to nitrate pollution of ground and surface water bodies worldwide. Research over the past two decades has shown that a large portion of fertilizer nitrogen is not directly used by crops, but ends up in the soil organic nitrogen pool. Tools such as simulation models and stable isotopes are being used to study nitrate pollution sources, and agricultural stewardship measures are being assessed to manage nitrate enrichment of water bodies.
SN APPLIED SCIENCES
(2021)