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V. Geethalakshmi

Publications (25)

Future Projections of Rainfall for Tamil Nadu from Coupled Model Intercomparison Project- 6 (CMIP6)

S. Divyadharshini, V. Geethalakshmi, K. Bhuvaneshwari, Ga. Dheebakaran, R. Karthikeyan, K. Thirukumaran, V. Karthick & S. Mohan Kumar · International Journal of Environment and Climate Change · 2023

Precipitation is a crucial input for agriculture and living things in the world, which changes drastically under a warmer climate due to climate change. Hence, the study was carried out to project the changes in annual and seasonal precipitation based on the France Centre Nationa...

Open access Research Article 10.9734/ijecc/2023/v13i102667

Insights into Rainfall Extremities Across the Agroclimatic Zones of Tamil Nadu, India

E. Devadarshini, V. Geethalakshmi, S. Pazhanivelan, Ga. Dheebakaran, R. Kumaraperumal, K. Bhuvaneswari, S. Mohan Kumar & Kumar , S. Mohan · International Journal of Environment and Climate Change · 2023

Rainfall is a crucial agrometeorological parameter that impacts hydrology and agricultural planning in a region. The spatiotemporal changes in the occurrences of precipitation extremes must be monitored to reduce the hazards caused by the fluctuating rainfall pattern. The extreme...

Open access Research Article 10.9734/ijecc/2023/v13i92552

Climate Driven Responses in Cocoa for Tamil Nadu, India

M. Selva Kumar, V. Geethalakshmi, P. Irene Vethamoni, M. Rajavel, C. Sudhalakshmi & K. Bhuvaneswari · International Journal of Environment and Climate Change · 2022

Climate influences the spread of the any crop by imposing environmental restrictions. The present investigation was carried to understand the effect of climate on cocoa in various cocoa growing regions. In order to establish the relationship between weather parameters and cocoa p...

Open access Research Article 10.9734/ijecc/2022/v12i1131049

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

Response of Gas Exchange Activity and Relative Water Content of Neem in Relation to Weather

K. Pugazenthi, V. Geethalakshmi, A. Senthil, K. Kumaran & S. Umesh Kanna · International Journal of Plant & Soil Science · 2021

Neem is known for its medicinal values and is a hardy plant that can grow in a wide variety of environmental conditions. However, productivity is impacted by unfavourable weather conditions due to different geographical locations. The present study was conducted to study the infl...

Open access Research Article 10.9734/ijpss/2021/v33i2130670

Investigation of Climate Variability Over High Rainfall Zone of Tamil Nadu, India

V. Guhan, V. Geethalakshmi, K. Bhuvaneswari, M. Rajavel, Dhanya Praveen, G. R. Mugilan, S. Pavithra & K. Senthilraja · International Journal of Environment and Climate Change · 2020

Rainfall is one of the most important climatic variables that determine the spatial and temporal patterns of climate variability of a region, which also provides useful information for the planning of water resources, agricultural production, and others. Climate change is one of...

Open access Research Article 10.9734/ijecc/2020/v10i1130264

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

Validation and Sensitivity Analysis of the AquaCrop Model for Deficit and Surplus Water Management in Hybrid Maize

A. Bharathi, T. Ragavan & V. Geethalakshmi · Journal of Agriculture and Ecology Research International · 2025

The FAO's Land and Water Division created the water-driven model AquaCrop to model how various herbaceous crops' yields would react to water. As a vital component, water has drawn the interest of scholars and decision-makers worldwide. They came to the conclusion that using the A...

Open access Research Article 10.9734/jaeri/2025/v26i4679

Evaluation on Adaptation Strategies for Enhancing Pearl Millet Productivity under Changing Climate Using DSSAT -Cropgro Model over Semi-Arid Tracts of Tamil Nadu

M. Ramanjineyulu, V. K. Paul Pandi, V. Geethalakshmi, C. Vannirajan, N. S. Venkataraman & J. Prabharan · International Journal of Environment and Climate Change · 2024

Field experiment was conducted at Agricultural College and Research Institute, Madurai with the treatment combination comprised of three sowing dates at biweekly intervals (II FN of September, I FN of October and II FN of October) and three nitrogen levels Recommended Dose of Nit...

Open access Research Article 10.9734/ijecc/2024/v14i124652

Calibration and Validation of DSSAT (CROPGRO) Model for Winter Irrigated Cotton in Coimbatore, Tamil Nadu, India

Rajashree Khatua, S. Panneerselvam, V. Geethalakshmi, Kumar M. & P. Jeyakumar · International Journal of Plant & Soil Science · 2023

Crop simulation model is used for predicting the crop productivity under various crop management practices and find out the yield gap of cotton crop, that require determination of genetic coefficient of a crop cultivar. Successful use of a crop model depends on the accuracy of ca...

Open access Research Article 10.9734/ijpss/2023/v35i224187

Standardized Precipitation Index Based Drought Assessment over the North Western Zone of Tamil Nadu, India

B. Santhoshkumar, N. K. Sathyamoorthy, V. Geethalakshmi, Ga. Dheebakaran, K. Boomiraj & N. Manikandan · International Journal of Environment and Climate Change · 2023

Drought is a natural disaster that tremendously affect the agriculture production and livelihood. Though the Tamil Nadu state is located at peninsular region of India and contributed from both the monsoons, the frequency of drought is high due to vagaries of monsoonal pattern. A...

Open access Research Article 10.9734/ijecc/2023/v13i102612

Effect of ENSO on Seasonal Temperature Over Tamil Nadu

M. Rajavel, M. Vengateswari, V. Geethalakshmi, K. Bhuvaneswari, V. Vakeswaran, R. Gowtham & S. Priyanka · International Journal of Environment and Climate Change · 2022

Increased concentration of greenhouse gases is expected to alter the radiative balance of atmosphere, causing increase in temperature and changes in precipitation patterns. Climate variability has been principal source of fluctuations in Indian food production. Even though there...

Open access Research Article 10.9734/ijecc/2022/v12i1030918

Impact Fly Ash on Nutrient Status of Wetland Rice Cultivation

N. Maragatham, C. Pradipa, V. Geethalakshmi & M. Maheswari · International Journal of Plant & Soil Science · 2022

The phrase, “Rice is life” aptly describes the importance of rice in food as well in nutritional security, particularly in Asian countries. Soil nutrient management in case of rice cultivation mainly focus on the major nutrient application but rice plants require high quantity of...

Open access Research Article 10.9734/ijpss/2022/v34i1130934

Effect of Automated Drip Irrigation System on Yield and Water Use Efficiency of Tomato (Solanum lycopersicum L.)

R. Suvitha, A. Velayutham, V. Geethalakshmi, S. Panneerselvam, P. Jeyakumar & K. Nagarajan · International Journal of Plant & Soil Science · 2021

Field experiment was conducted to evaluate the performance of different automated drip irrigation on tomato crop under sandy clay loam soil in Tamil Nadu Agricultural University during kharif 2019 and kharif 2020. Five treatments comprising 4 different automated drip irrigation s...

Open access Research Article 10.9734/ijpss/2021/v33i2430768

Comparison Statistical Rice Yield Prediction with Multiple Weather Parameters

T. Thurkkaivel, G. A. Dheebakaran, V. Geethalakshmi, S. G. Patil & K. Bhuvaneshwari · International Journal of Plant & Soil Science · 2021

Advance knowledge of harvestable products, especially essential food crops such as rice, wheat, maize, and pulses, would allow policymakers and traders to plan procurement, processing, pricing, marketing, and related infrastructure and procedures. There are many statistical model...

Open access Research Article 10.9734/ijpss/2021/v33i2230680

Effect of Plant Growth Regulators on Cowpea (Vigna unguiculata (L.) Walp) Productivity under High Temperature Stress

P. Priyanka, S. Kokilavani, V. Geethalakshmi, SP. Ramanathan & M. K. Kalarani · International Journal of Environment and Climate Change · 2021

High temperature stress severely interrupts the physiological and biochemical functions in plants which hinders the growth, development and productivity of cowpea. The present study evaluates the potential roles of Naphthalene Acetic Acid and Brassinolide for mitigating the adver...

Open access Research Article 10.9734/ijecc/2021/v11i1030500

Standardization of Varied Sowing Windows and Nitrogen Levels for Pearl Millet (Pennisetum glaucum L.) under Rainfed Conditions of Tamil Nadu

M. Ramanjineyulu, V. K. Paulpandi, V. Geethalakshmi, C. Vanniarajan, N. S. Venkataraman & J. Prabhaharan · International Journal of Plant & Soil Science · 2021

A field experiment was conducted during kharif-2017 at Agricultural College and Research Institute, Madurai in a factorial randomized block design. The present research was designed by nine treatment combinations considering three dates of sowing D1: II fortnight of June, D2 : I...

Open access Research Article 10.9734/ijpss/2021/v33i2130668

Quantification of Seasonal Rainfall Variability Effect on Pearl Millet Yield Over Madurai District of Tamil Nadu

M. Ramanjineyulu, V. K. Paulpandi, V. Geethalakshmi, C. Vanniarajan, N. S. Venkataraman & J. Prabhaharan · Current Journal of Applied Science and Technology · 2021

Dryland agriculture is entirely reliant on the monsoonal rainfall for its crop sensation. Pearl millet crop cultivation in a rainfed region like Madurai district Tamil Nadu became remunerative task, where the major rainfall contribution is from North-East monsoon. The influence o...

Open access Research Article 10.9734/cjast/2021/v40i2931538

Delineation of Efficient Cotton Growing Regions of Tamil Nadu

Rajashree Khatua, S. Panneerselvam, V. Geethalakshmi, M. Kumar & P. Jeyakumar · Current Journal of Applied Science and Technology · 2020

Cotton is an immensely important crop for the sustainable economy of India and livelihood of the Indian cotton farming community. Identification of potential regions would help in increasing the productivity, ensures better utilization of available resources and avoid wastage of...

Open access Research Article 10.9734/cjast/2020/v39i1430736

Weather Based Pest Forewarning Model for Major Insect Pests of Rice – An Effective Way for Insect Pest Prediction

Manikandan Narayanasamy, J. S. Kennedy & V. Geethalakshmi · Annual Research & Review in Biology · 2017

Weather parameters viz., Temperature, rainfall, relative humidity, sunshine hours and wind speed are the major weather elements determining the insect pests’ occurrence. Weather based forewarning models are widely utilized in the integrated pest management system as a tool which...

Open access Research Article 10.9734/ARRB/2017/37365

Mitigation Option for GHG Emission from Wetland Rice Cultivation

C. Pradipa, N. Maragatham, K. Senthil Raja, V. Geethalakshmi, S. D. Sivakumar & M. Maheswari · International Journal of Environment and Climate Change · 2022

The study on the effect of soil amendments and fertilizers on the mitigation of CH4 and N2O emission from rice field was conducted in the Wetland farm of Tamil Nadu Agricultural University farm, Coimbatore, Tamil Nadu, India during rabi season. The results showed that the use of...

Open access Research Article 10.9734/ijecc/2022/v12i1030837

Performance of WRF’S Microphysics Options to Increase the Medium Range Rainfall Forecast Accuracy in Tamil Nadu Cauvery Delta Zone

S. Poorani Selvi, G. A. Dheebakaran, S. Kokilavani & V. Geethalakshmi · International Journal of Environment and Climate Change · 2020

Weather plays a significant role in agricultural sector and the favourable weather enhance the opportunities and sustainability for crop production. Agriculture oriented Medium Range Weather Forecasts (3 – 10 days), particularly rainfall information in a week advance helps the fa...

Open access Research Article 10.9734/ijecc/2020/v10i1230333

Socio-Economic Status and Extension Participation of Marine Fishermen in Andhra Pradesh, India

P. Sandeep, J. Charles Jeeva, P. S. Ananthan, S.S. Raju, V. Geethalakshmi, Shivaji Dadabhau Argade & Sudhakar Ogirala · Asian Journal of Agricultural Extension, Economics & Sociology · 2025

Aim: To assess the socioeconomic status, economic motivations, and extension participation of marine fishermen in Andhra Pradesh, and to examine the roles, linkages, and perspectives of resource managers and research experts in supporting sustainable fisheries development. Study...

Open access Research Article 10.9734/ajaees/2025/v43i102828

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