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S. P. Ramanathan

Publications (17)

Spatial Vulnerability Assessment and Diurnal Climatology of Lightning Events in Tamil Nadu, India

V. Harsha Veina, S. P. Ramanathan, S. Kokilavani, S. G. Patil, S. D. Pawar, V. Gopalakrishnan, Somnath Mahapatra & P. Balasubramanian · International Journal of Environment and Climate Change · 2023

The research probes into the seven agro climatic zones in Tamil Nadu which are highly vulnerable to lightning strikes, as well as the human fatalities caused by Cloud to Ground lightning. The purpose of the study is to find out the vulnerable hotspots and diurnal climatology of t...

Open access Research Article 10.9734/ijecc/2023/v13i92261

Thermal Time Approach under Different Sowing Windows for Greengram

K. Sabaridheepa, S. P. Ramanathan, S. Kokilavani, Ga Dheebakaran & K. Boomiraj · International Journal of Environment and Climate Change · 2022

Crop phenology and yield are highly influenced by prevailing weather condition during the crop growth phases. A research work was carried out at Agro Climate Research Centre, Tamil Nadu Agricultural University, Coimbatore during June to August 2022 to determine the suitable sowin...

Open access Research Article 10.9734/ijecc/2022/v12i1131209

A Study on Astrometeorological Relationship between Planet Azimuth and Temperature

M. Panchulakshmi, Ga. Dheebakaran, S. P. Ramanathan & S. Kokilavani · International Journal of Environment and Climate Change · 2022

Temperature is one of the key weather parameters, which is a necessity for all life on Earth. Any variation from the normal can impede the physical, chemical, and biological processes of life. Extremes would produce permanent changes that would halt the plant's growth and may cau...

Open access Research Article 10.9734/ijecc/2022/v12i1131059

Association of Different Satellite Driven Products with Evapotranspiration in Tamil Nadu, India (2010-2020)

Kuldeep Patel, S. Kokilavani, S. P. Ramanathan & Balaji Kannan · International Journal of Environment and Climate Change · 2022

Evapotranspiration is an important phenomenon of hydrological cycle mainly influenced by meteorological factors and other vegetation characteristics. In this study, the relationship between Actual Evapotranspiration (AET) with Normalized Difference Vegetation Index (NDVI) and Lan...

Open access Research Article 10.9734/ijecc/2022/v12i1131048

Evaluating the Suitability of System of Rice Intensification Practices for Enhancing Rice and Water Productivity in Semi-Arid Environment, Tamil Nadu, India

Jeevanand Palanisamy, V. Geethalakshmi, S. P. Ramanathan, A. Senthil & . Balajikannan · International Journal of Environment and Climate Change · 2022

  In the world of rapid change in climate, irregular rainfall pattern tends to pose serious impact on water availability for agriculture. Rice is one of the important food crops to get affected by the low water availability because of its high water requirement. Various technique...

Open access Research Article 10.9734/ijecc/2022/v12i1030814

Unravelling the Growth Potential of Rice under Modified Rice Cultivation System in Tamil Nadu, India

Jeevanand Palanisamy, V. Geethalakshmi, S. P. Ramanathan, A. Senthil & Balaji Kannan · International Journal of Plant & Soil Science · 2022

There is a need for increasing rice productivity to cope up with increasing population and water shortages, especially in Tamil Nadu, India. Efforts were made in the past, mainly to increase the genetic potential of the crop, by developing high yielding varieties. However, adopti...

Open access Research Article 10.9734/ijpss/2022/v34i1831077

Effect of Drip Irrigation and Inter Cropping Systems on Growth Characters of Maize

C. Navin Kumar, S. Panneer Selvam, S. P. Ramanathan, S. Kalarani, G. Nagarajan & S. Duraisamy · International Journal of Plant & Soil Science · 2022

Aims: The main aim of the study is to reduce the irrigation quantity for maize and intercrop adds extra value to the sole crop by generating additional income to the farmers. Study Design: Factorial Randomised Block Design (FRBD). Place and Duration of Study: Eastern block farm,...

Open access Research Article 10.9734/ijpss/2022/v34i230834

Influence of Weather Parameters and Thermal Time Approach on Green Gram at Coimbatore, Tamil Nadu

S. A. Naveen, S. Kokilavani, S. P. Ramanathan, G. A. Dheebakaran & S. Anitta Fanish · International Journal of Environment and Climate Change · 2020

An investigation was carried out at the Agro Climate Research Centre, Tamil Nadu Agricultural University, on the effect of weather parameters on the green gram yield sown at various sowing dates during the rabi season of 2019. At various sowing dates, two green gram cultivars, VB...

Open access Research Article 10.9734/ijecc/2020/v10i1230278

SARIMA Modelling and Forecasting of Monthly Rainfall Patterns for Coimbatore, Tamil Nadu, India

S. Kokilavani, R. Pangayarselvi, S. P. Ramanathan, Ga. Dheebakaran, N. K. Sathyamoorthy, N. Maragatham & R. Gowtham · Current Journal of Applied Science and Technology · 2020

Weather forecasting is an important subject in the field of meteorology all over the world. The pattern and amount of rainfall are the essential factors that affect agricultural systems. The present paper describes an empirical study for modeling and forecasting the time series o...

Open access Research Article 10.9734/cjast/2020/v39i830594

Effect of Weed Management Practices of Small Onion (Allium cepa var. Aggregatum) Nursery on the Weed Flora, Weed Control Efficiency and Seedling Production

N. K. Sathyamoorthy, R. Pradhap, V. Geethalasksmi, S. P. Ramanathan, K. Bhuvaneswari, P. Prakash, V. Guhan, Ga. Dheebakaran, S. Kokilavani, C. Pradipa & N. Vadivel · International Journal of Plant & Soil Science · 2022

Control of weeds in nursery is necessary for production of healthy and sturdy seedlings. In this regard, field experiments were conducted to study the effect of different weed management practices on weed control efficiency and performance of onion seedling in nursery at two phas...

Open access Research Article 10.9734/ijpss/2022/v34i1931228

Astrometeorology: Relationship between Two Planet’s Aspect and Cyclone Events over Bay of Bengal (BOB)

T. Sankar, Ga Dheebakaran, S. Kokilavani & S. P. Ramanathan · International Journal of Environment and Climate Change · 2020

Aim: Identifying the astrometeorological relationship between two planet’s aspect and cyclone events over Bay of Bengal (BOB). Study Design: Correlating the two planet aspects calculated from the ephemeris and different stages of Cyclone event. Place and Duration of Study: The st...

Open access Research Article 10.9734/ijecc/2020/v10i1130277

Effect of Microclimate Modulation on the Growth and Yield of Straw Mushroom as a Intercrop in Maize Field during Summer

Devanakonda Venkata Sai Chakradhar Reddy, Ga Dheebakaran, G. Thiribhuvanamala, N. K. Sathyamoorthy, S. P. Ramanathan & S. Kokilavani · International Journal of Environment and Climate Change · 2022

A field experiment was carried out during the summer season to study the effect of microclimate modification on growth and yield of paddy straw mushroom under outdoor cultivation as maize intercrop. A Randomised Complete Block Design (RCBD) with eight treatments comprising the co...

Open access Research Article 10.9734/ijecc/2022/v12i1131232

Evaluating the Irrigation Regimes and Fertigation Schedule of Red Gram (Co (Rg) - 7) under Drip Irrigation System

N. K. Sathyamoorthy, S. Krishnasamy, C. Swaminathan, J. Prabhakaran, S. P. Ramanathan, M. Anbarasu, K. Senthilraja & V. Guhan · International Journal of Environment and Climate Change · 2022

Red gram occupies a unique position in Indian agriculture by constituting the regular protein supplier to the average Indian diet. Field experiments were carried out to evaluate the effect of different irrigation regimes of drip irrigation on red gram under two different of  meth...

Open access Research Article 10.9734/ijecc/2022/v12i1030948

Subsurface Drip Fertigation, Irrigation Regimes and Short Duration Pulses on Productivity of Cotton-Maize Cropping Sequence

N. K. Sathyamoorthy, R. Ragavan, J. Prabhakaran, P. Prakash, S. P. Ramanathan, Ga. Dheebakaran, V. Guhan, R. Senthil Raja, S. Kokilavani & K. Bhuvaneswari · International Journal of Plant & Soil Science · 2022

Fertigation, a latest technology wherein nutrients are applied along with irrigation water. Fertigation opens new possibilities for controlling water and nutrient supplies to crops besides maintaining the desired concentration and distribution of water and nutrients to the soil....

Open access Research Article 10.9734/ijpss/2022/v34i1831199

Drought Characterization Over Periyar Vaigai Command Area in Tamil Nadu

N. K. Sathyamoorthy, A. P. Ramaraj, K. Senthilraja, R. Jagannathan, S. P. Ramanathan & V. Geethalakshmi · International Journal of Environment and Climate Change · 2020

India encountered numerous drought years in the decades. It is a matter of concern with increased frequency as well as intensity, mainly due to factors related to changing climate in recent years. In India livelihoods of more than 75% of the population are directly or indirectly...

Open access Research Article 10.9734/ijecc/2020/v10i1230332

Exploring DSSAT Model Genetic Coefficient Estimation Methodologies for Chickpea in Bundelkhand Region of Uttar Pradesh, India

Mrunalini Kancheti, Sellaperumal Pazhanivelan, Narendra Kumar, Vellingiri Geethalakshmi, Ragunath Kaliaperumal, S. P. Ramanathan, N. Sritharan, Yogesh Kumar & Girish Prasad Dixit · International Journal of Plant & Soil Science · 2023

In modern crop production, essential factors that contribute to narrowing yield gaps and minimizing production costs include making informed decisions about the selection of plant varieties, determining optimal sowing dates, determining appropriate plant populations, selecting su...

Open access Research Article 10.9734/ijpss/2023/v35i183471

Evaluation of Drought Characteristics Using the Reconnaissance Drought Index (RDI) over Parambikulam Aliyar Basin of Tamil Nadu

V. Guhan, V. Geethalakshmi, S. Panneerselvam, A. Raviraj, A. Lakshmanan, S. P. Ramanathan, N. Kowshika & K. Bhuvaneswari · International Journal of Environment and Climate Change · 2020

Drought tends to be a creeping phenomenon occurs gradually with the deficiency in rainfall further extending its impact on sectors which are dependent on water. The drought characteristics were analysed in Parambikulam Aliyar Project (PAP) basin based on the European Centre for M...

Open access Research Article 10.9734/ijecc/2020/v10i930246