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Sixteenth International Water Technology Conference

作者： Kiran Tota-Maharaj Piotr Grabowiecki Akintunde Babatunde prasad devi tumula University of Salford Manchester Civil Engineering Research Centre Newton BuildingSalfordGreater Manchester United Kingdom Institute of Geophysics Polish Academy of SciencesWarsaw Poland Centre for Water Resources Research School of Arch.Landscape and Civil Engineering Newstead Building University College DublinIreland

The integration of constructed wetlands or natural wetlands and surface water heat pumps(SWHPs) leads towards the development of a novel sustainable technology treating urban stormwater and application of renewable energy technologies. SWHPs are a well-recognised source of renewable energy and provide high efficiencies for heating and cooling by employing the enormous renewable storage capacity of surface water systems such as wetlands. Engineered wetland systems are compact urban wastewater or stormwater treatment systems that encompass a plurality of treatment modules similar to processes occurring in natural wetlands. Wetlands are a preferred stormwater treatment system over conventional systems which are energy intensive and inadvertently contribute to greenhouse gas emissions. The incorporation of SWHPs within constructed wetlands has great potential for addressing global water and energy issues, providing significant and multiple benefits for energy and water usage, protecting and enhancing natural water systems within urban catchments and reducing the demand on potable water supplies by contributing to water recycling. Two experimental rigs simulating real-life scenarios of surface water heat pumps integrated with constructed wetlands were set up, and running in a green house(controlled environment) at The University of Salford Manchester. Temperatures and water quality analyses measured the treatment performance and water quality efficiency for the combined systems. The water quality analyses for treatment processes of the rigs showed no significant differences for the removal of biochemical oxygen demand, chemical oxygen demand, nutrients(phosphates, nitrates and ammonia) for the wetland system linked to water-sourced heating and cooling and the stand-alone constructed wetland.

关键词： Constructed Wetland Vertical Flow Water Quality Water-Source Heat Pump Energy Efficiency

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Soil Test Based Fertilizer Prescriptions through Inductive cum Targeted Yield Model for Sesamum on Alfisol

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Journal of Agricultural Science and Technology(A) 2020年第3期10卷 115-122页

作者： Adusumilli Madhavi Matli Srinivasa Chari tumula Srijaya Pasupuleti Surendra Babu Pradip Dey All India Coordinated Research Project on Soil Test Crop Response Professor Jayashankar Telangana State Agricultural UniversityHyderabad 500030India All India Coordinated Research Project on Soil Test Crop Response Agricultural Research StationAcharya N.G.Ranga Agricultural UniversityUtukur 516003India All India Coordinated Research Project on Micronutrients Professor Jayashankar Telangana State Agricultural UniversityHyderabad 500030India All India Coordinated Research Project on Soil Test Crop Response Indian Institute of Soil ScienceBhopal 462038India

Studies on Soil Test Crop Response Based Integrated Plant Nutrition System(STCR-IPNS)were conducted for three years adopting the Inductive cum Targeted Yield Model,on alfisols of Unified Andhra Pradesh,Southern India during summer 2016-2018 in order to develop fertilizer prescriptions through IPNS for the desired yield targets of Sesamum under field *** bases for making the fertilizer prescriptions *** requirement(NR),contribution of nutrients from soil(Cs),fertilizer(Cf)and vermicompost(CVC)were computed using the field experimental *** use of these basic parameters,the fertilizer prescription equations were developed under NPK alone and under IPNS for the desired yield targets of Sesamum for a range of soil test *** quantity of fertilizers contributed by the application of vermicompost was *** requirement to produce 100 kg of sesame seed was worked out to be 10.20 kg N,3.90 kg P2O5 and 5.22 kg *** the present investigation,the requirement of N was higher which is followed by K2O and *** requirement of N was 2.62 times higher than P and 1.95 times higher than *** percent contribution of N,P and K was 12.25,15.75 and 6.00 from soils,41.68,22.85 and 59.97 from fertilizer and 9.87,6.74 and 18.65 from organic manures,*** the Inductive cum Targeted Yield Model used to develop fertilizer prescription equations provides a strong basis for soil fertility maintenance consistent with high productivity and efficient nutrient management in farming for sustainable and enduring agriculture.

关键词： Fertilizer prescription equations alfisol Soil Test Crop Response Based Integrated Plant Nutrition System Sesamum yield target

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