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U. Sivakumar

Publications (7)

Effect of Manures and Foliar Application on Quality Parameters and Nutrient Uptake of Organic Blackgram

M Vinutha, E. Somasundaram, S. Sanbagvalli, U. Sivakumar & R. Sunitha · International Journal of Environment and Climate Change · 2026

Aims: The study was conducted to evaluate the effect of organic and liquid manures on the productivity, quality and nutrient response of organic blackgram. Study Design: The experiments were laid out in split plot design with three replications, where the main plot consisting of...

Open access Research Article 10.9734/ijecc/2026/v16i15237

Phosphorus Releasing Potentials of Amino Acids and Low Molecular Weight Organic Acids from Highly Calcareous Soils

P. M. Brindhavani, T. Chitdeshwari, D. Selvi, U. Sivakumar & P. Jeyakumar · International Journal of Plant & Soil Science · 2022

Aims: The present study was conducted to investigate the potentials of amino acids and low molecular weight organic acids, two major components of plant root exudates on phosphorus release from highly calcareous soils. Study Design: Factorial experiment based on completely random...

Open access Research Article 10.9734/ijpss/2022/v34i1531009

Zinc (Zn) and Iron (Fe) Fertilization for Improving the Antioxidant Enzyme Activity and Biochemical Constituents in Capsicum Hybrids

Prakash Ranjan Behera, T. Chitdeshwari, P. Malarvizhi, U. Sivakumar & P. Irene Vethamoni · International Journal of Plant & Soil Science · 2021

Micronutrients, particularly Iron (Fe) and Zinc (Zn), play a vital role in the growth and development of plants due to their catalytic effect on many metabolic processes. However, the biochemical responses to the applied micronutrients vary with cultivars and their species. A scr...

Open access Research Article 10.9734/ijpss/2021/v33i2430774

Cultural Characteristics and Molecular Confirmation of Ustilaginoidea virens the Incitant of False Smut of Rice

G. Nithila, C. Gopalakrishnan, S. Nakkeeran, R. Saraswathi & U. Sivakumar · International Journal of Plant & Soil Science · 2022

Aims: Ustilaginoidea virens, which causes false smut of rice (synonyms: green smut or pseudo smut), is an emerging grain disease around the world. The main aim of the study is to find out suitable culturable medium, carbon sources and pH for the growth of false smut pathogen and...

Open access Research Article 10.9734/ijpss/2022/v34i232590

Development and Design of Laboratory Scale Subsurface Flow Constructed Wetland System

Thaksande Vishal, S. Selvakumar, Balaji Kannan, K. Boomiraj, U. Sivakumar & R. M. Jayabalakrishnan · International Journal of Environment and Climate Change · 2022

Wetlands have traditionally functioned as a natural filtration system. Constructed wetlands (CWs) are a cost-effective and efficient green technology for treating many different types of wastewaters. The efficiency of constructed wetland depends upon the type of media, vegetation...

Open access Research Article 10.9734/ijecc/2022/v12i1030880

Phenotypic and Molecular Characterization of Endophytic Bacteria Isolated from Banana

G. Ragavi, M. Muthamilan, S. Nakkeeran, N. Kumaravadivel, U. Sivakumar & A. Suganthi · Current Journal of Applied Science and Technology · 2019

Several species of endophytic bacteria has been reported from various plants. In the present study, samples of roots, rhizome, pseudostem, petiole and leaves of healthy Banana plant were collected from variety Yangambi km5 (AAA). In total, 38 endophytic bacteria were isolated. Am...

Open access Research Article 10.9734/cjast/2019/v38i630402

Soil Bioavailability and Native Plant Uptake of Mercury in the Contaminated Sites at Kodaikanal, India

R. Suganthi, S. Avudainayagam, V. Davamani, K. Sara Parwin Banu, C. N. Chandrasekar & U. Sivakumar · International Research Journal of Pure and Applied Chemistry · 2020

This paper presents the evaluation of soil contamination with bioaccumulation and bioavailability of mercury in the surroundings of a former thermometer factory at Kodaikanal in connection with several other soil chemical characteristics. Mercury (Hg), a rare earth element, evolv...

Open access Research Article 10.9734/irjpac/2020/v21i2430339