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R. Isaac Manuel

Publications (9)

Evaluation of Mulching Effects on Weed Control in Blackgram Production under Irrigated Condition

T. Chandralekha, R. Isaac Manuel, K. Sharmili & P. Dinesh Kumar · International Journal of Environment and Climate Change · 2023

A field experiment with the objectives to understand the evaluation of mulching effects on weed control in blackgram production under irrigated condition involving two factors viz., mulching (paddy straw mulching, sugarcane trash mulching, no mulching) and herbicidal treatments (...

Open access Research Article 10.9734/ijecc/2023/v13i82150

Evaluation of Mulching Methods and Legume Intercropping on Weed Control Efficiency and Agronomic Traits of Pearl Millet (Pennisetum glaucum)

X. Catherine Sharon, R. Isaac Manuel, K. Sharmili & Dinesh Kumar · International Journal of Environment and Climate Change · 2023

Aim: To evaluate the weed control efficiencies of different mulching practices and legume intercropping in transplanted pearl millet. Study Design: Randomized Complete Block Design (RBD). Place and Duration of Study: The field trial was conducted during the Rabi season of 2022 at...

Open access Research Article 10.9734/ijecc/2023/v13i82134

Influence of Cropping System and Nutrient Management Practices on the Yield, and Economics of Pearl Millet [Pennisetum glaucum]

A. Ajay Arockia Iraiyanban, R. Isaac Manuel, P. A. Joseph & P. Dinesh Kumar · International Journal of Environment and Climate Change · 2023

The Field experiments were conducted to evaluate the effect of cropping systems and nutrient management practices on the yield, and economics of pearl millet in the School of Agricultural Science, Karunya Institute of Technology and Sciences, Coimbatore, India). The experiments w...

Open access Research Article 10.9734/ijecc/2023/v13i81998

Comparative Response Studies on Organic Amendments and Leguminous Intercropping on Maize (Zea mays L.) Agronomic Traits and Photosynthetic Activity

Bexell George, R. Isaac Manuel, Sugitha Thankappan & R. Susan Poonguzhali · International Journal of Environment and Climate Change · 2023

The present study aimed to optimize a suitable nutrient management practice with the co-application of organic amendments and leguminous intercropping for sustainable maize production. The experiment was conducted during the Kharif and Rabi seasons of 2022-’23 in randomized block...

Open access Research Article 10.9734/ijecc/2023/v13i81944

Effect of Zinc Fertilizers on Growth and Yield of Chickpea (Cicer arietinum L.) under Irrigated Condition

Rubika T, R. Augustine, R. Isaac Manuel & S. Praveena Katharine · Asian Journal of Soil Science and Plant Nutrition · 2025

An experimental study investigated the effects of zinc fertilization on chickpea (Cicer arietinum L.) growth, yield, and protein content through agronomic biofortification under irrigated conditions during the rabi seasons of 2024 Conducted at Karunya Institute of Technology and...

Open access Research Article 10.9734/ajsspn/2025/v11i1502

Growth, Yield and Economics of Irrigated Green Gram (Vigna radiata .L) as Influenced by Inorganic Fertilizer and Various Organic Inputs

S. Sasi, S. Alagappan, R. Isaac Manuel & S. Praveena Katharine · International Journal of Environment and Climate Change · 2023

A field experiment was conducted at agronomy research farm of Karunya Institute of Technology and Sciences, Coimbatore during rabi season 2022 in order to look into the influence by inorganic fertilizer and various organic inputs on the crop growth and yield compared to organic f...

Open access Research Article 10.9734/ijecc/2023/v13i82122

Study of Different Sources of Organic Manures in Comparison with RDF on Growth and Yield of Greengram [Vigna radiata (L.) Wilczek]

A. Visuvasa Anto Shiny, S. Alagappan, R. Isaac Manuel & K. Indira Petchiammal · International Journal of Environment and Climate Change · 2023

The field experiment was conducted to evaluate the different sources of organic manures in comparison with recommended dose fertilizer (RDF) on greengram at South farm, Karunya Institute of Technology and Science, Coimbatore, India. The field experiment was laid out in Randomized...

Open access Research Article 10.9734/ijecc/2023/v13i82098

Comparative Evaluation of Neem-coated Urea and Nano Urea on the Growth and Physiological Attributes of Finger Millet (Eleusine coracana L. Gaertn)

R. Santhosh Anto Kumar, K. Sharmili, B. Balaganesh & R. Isaac Manuel · International Journal of Environment and Climate Change · 2023

An experimental study was conducted to investigate the effects of nitrogen fertilization on finger millet, with Significant nutrient losses, especially for nitrogen (N) fertilizers, occurring when chemical fertilizers are directly incorporated into the field. These losses primari...

Open access Research Article 10.9734/ijecc/2023/v13i82011

Influence of CWSI-Based Irrigation Scheduling on Agronomic Traits (Zea mays L.) and Sustainable Water Use in Maize

Alex Immanual Jeyasingh R., Silambarasan Murugan, M. Suguna Devakumari & R. Isaac Manuel · International Journal of Environment and Climate Change · 2023

This study aimed to optimize irrigation scheduling for maize (Zea mays L.) using the crop water stress index (CWSI) to improve water use efficiency and yield. The study was conducted in the South farm of the School of Agricultural Sciences, Karunya Institute of Technology and Sci...

Open access Research Article 10.9734/ijecc/2023/v13i81964