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Jacob John

Publications (10)

On-farm Productivity and Profitability of Paired-Row-Rice Diversified Cropping System in West Coast Plains and Ghat Region of India

Hemand J, Jacob John, Shalini Pillai P, Bindhu J. S & Meera A. V · International Journal of Plant & Soil Science · 2024

Globally diversification of rice based cropping system buildups ecosystem resilience and food security. In the summer season, weed growth and water availability are a major problem for rice cultivation; it can be managed with the help of intercropping. A field experiment was carr...

Open access Research Article 10.9734/ijpss/2024/v36i125198

Impact of Cropping Systems on Soil Organic Carbon Levels and Enzyme Activity

Jince Mary M. Joy, Jacob John, A. V. Meera, B. Sudha, P. Shalini Pillai & R. V. Manju · International Journal of Environment and Climate Change · 2023

Monocropping makes agriculture more susceptible to the adverse effects of climate change. Resilient agriculture systems that can buffer crops against various agricultural vulnerabilities is the need of the hour. In this context, a study was conducted to assess the impact of vario...

Open access Research Article 10.9734/ijecc/2023/v13i113599

Alternative Cropping Systems to Mitigate Carbon Dioxide Emission in Rice Fields under Different Nutrient Levels

Anju B. Raj, Jacob John, P. Shalini Pillai, A. V. Meera, R. V. Manju & B. Sudha · International Journal of Environment and Climate Change · 2023

The impact of different cropping systems and nutrient levels on carbon dioxide emission, soil temperature and soil moisture were studied. The experiment was carried out at Integrated Farming System Research Station, Karamana, during kharif, rabi and summer seasons of 2020-2021 in...

Open access Research Article 10.9734/ijecc/2023/v13i92268

Effect of Nitrogen Management on Growth and Yield of Diverse Nitrogen-efficient Genotypes of Rice (Oryza sativa L.) in the Southern Laterites of Kerala, India

Merin Jose, Shalini Pillai P., Jacob John, Niveditha M. S., Aparna B & Pratheesh P. Gopinath · Journal of Advances in Biology & Biotechnology · 2025

A field experiment was conducted at the Department of Agronomy, College of Agriculture, Vellayani, Kerala, to evaluate the field performance of four nitrogen-efficient rice varieties (two short duration varieties and two medium duration rice varieties) selected based on a previou...

Open access Research Article 10.9734/jabb/2025/v28i52360

Harnessing Nitrogen Use Efficiency for Enhancing Productivity in Rice: A Review

Merin Jose, Shalini Pillai P & Jacob John · Asian Journal of Soil Science and Plant Nutrition · 2024

Nitrogen fertilizers have significantly enhanced rice yields over the past decades, but they also have substantial negative impacts on the environment. Excessive application of nutrients, particularly nitrogen, beyond crop requirements is linked to environmental losses. High nitr...

Open access Research Article 10.9734/ajsspn/2024/v10i4398

Impact of Growth Media and Piriformospora indica Colonisation on Seedling Growth Characters of Rice (Oryza sativa L.)

Adarsh, S., Ameena M., Shalini Pillai P., Jacob John, Joy M., Naveen Leno & Beena R. · Journal of Experimental Agriculture International · 2025

A study was undertaken at the College of Agriculture, Vellayani, during 2021-22 to assess the effect of growth media compositions on P. indica colonization and evaluating their effect on rice seedling performance. The experiment employed eight media combinations with and without...

Open access Research Article 10.9734/jeai/2025/v47i103804

The Impact of Zinc Nutrition on Weed Competitiveness in Rice

Boddu Archana, Bindhu J.S, Shalini Pillai P, Jacob John & Meera A.V · Asian Journal of Soil Science and Plant Nutrition · 2025

The experiment was conducted at the Integrated Farming System Research Station, Karamana, Thiruvananthapuram, Kerala Agricultural University, Kerala, India, during the Kharif Season 2022-2023 to study the influence of different zinc nutrition treatments on weed competitiveness in...

Open access Research Article 10.9734/ajsspn/2025/v11i1501

Zinc Nutrition in Rice Based Cropping Systems: A Comprehensive Review

Boddu Archana, Bindhu J.S, Shalini Pillai P, Jacob John & Meera A.V · Journal of Experimental Agriculture International · 2024

Rice-based cropping systems being the most practiced cropping system in India, it suffers zinc deficiency as majority of the Indian soils are deficient in the Zn micronutrient. Zn is considered the fourth most important yield limiting nutrient of Agricultural crops. Apart from pl...

Open access Research Article 10.9734/jeai/2024/v46i52413

Harnessing Biocontrol Potential of Endophytic Xylaria spp. against Plant Pathogens: Mechanisms and Applications

H. P. Harshith, A. Sajeena, Jasmin Laila Rasheed, N. V. Radhakrishna, Jacob John & M. K. Dhanya · Journal of Advances in Biology & Biotechnology · 2026

Plant diseases cause substantial crop loss globally, with fungal pathogens accounting for the majority of infections, leading to significant economic loss. The environmental concerns associated with chemical pesticides and other limitations have made it necessary to search for su...

Open access Research Article 10.9734/jabb/2026/v29i53921

In-vitro Evaluation of Botanicals/Biofumigants against Rhizoctonia solani Inciting Collar Rot and Web Blight of Yard Long Bean (Vigna unguiculata subsp sesquipedalis (L.) Verdcourt)

Aswathy Peethambaran, Sajeena, A, Radhakrishnan N. V, Joy Michal Johnson, Jacob John, Sarada S, Berin Pathrose, Mary Sharmila A & Nimisha Haridasan · Journal of Advances in Biology & Biotechnology · 2025

Collar rot and web blight caused by Rhizoctonia solani is a major soil borne disease adversely affecting the growth and pod yield of yard long bean (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt). The disease is very difficult to control due to the prolonged survival capa...

Open access Research Article 10.9734/jabb/2025/v28i92986