Skip to content
G

G. R. Rajakumar

Publications (5)

Precision Nutrient Management for Improving Productivity, Nutrient Efficiency and Soil Fertility in Transplanted Rice

Anil Kumar Keerthi, G. R. Rajakumar, B. R. Jagadeesh, P. Priya & J. R. Diwan · Asian Journal of Soil Science and Plant Nutrition · 2026

Site-specific nutrient management (SSNM) can improve the synchronisation of nutrient supply with crop requirements in transplanted rice. A field experiment was conducted during Kharif 2023 at the Agricultural Research Station, Mugad, Dharwad, Karnataka, to compare the Recommended...

Open access Research Article 10.9734/ajsspn/2026/v12i4771

Effect of Fipronil + Isoprothiolane against Onion Thrips and Purple Blotch Disease and Its Effect on Parasites and Predators

M. R. Ravikumar, T. Ganapathi & G. R. Rajakumar · International Research Journal of Pure and Applied Chemistry · 2020

Onion (Allium cepa L.) is one of the important vegetable cum condiment crop grown throughout the world. Onion crop is infested by various insect pests and diseases right from seedling to harvesting stage. The experiment was conducted in farmer’s fields of Ranebennur (Haveri–Distr...

Open access Research Article 10.9734/irjpac/2020/v21i2430353

Influence of Pre-Emergence Weedicides on Turmeric (Curcuma longa L.) Growth and Yield

T. Ganapathi, M. R. Ravikumar & G. R. Rajakumar · International Research Journal of Pure and Applied Chemistry · 2020

A field experiment was conducted during 2015-16, 2016-17 and 2017-18 at Agricultural Research Station, Hanumanamatti to study the effect of chemical herbicides on weed management in turmeric. The treatments consisted of pre emergent application of Alachlor, Butachlor, Pedimethali...

Open access Research Article 10.9734/irjpac/2020/v21i2430362

Effect of Chemical Herbicides on Weed Management in Allium sativum L. (Garlic) and Its Yield

T. Ganapathi, M. R. Ravikumar & G. R. Rajakumar · International Research Journal of Pure and Applied Chemistry · 2020

A field experiment was conducted during 2015-16, 2016-17 and 2017-18 at Agricultural Research Station, Hanumanamatti, Ranebennur (Tq), Haveri (Dist.) Karnataka, to study the effect of chemical herbicides on weed management in garlic. The treatments consisted of pre emergent appli...

Open access Research Article 10.9734/irjpac/2020/v21i2430363

Effect of Soil Test Crop Response (STCR) and STCR –Integrated Plant Nutrition System (IPNS) Based Fertilizer Prescription Equations on Maize Productivity, Economics and Soil Fertility Status in Vertisols of Northern Karnataka

Kanannavar, P. S., Rajakumar, G. R., D. P. Biradar, Reddy, K. Jaisimha, Biradar, D. P., G. R. Rajakumar, K. Jaisimha Reddy, C. P. Chandrashekara, Chandrashekara, C. P. & P. S. Kanannavar · International Journal of Plant & Soil Science · 2022

A study on Soil Test Crop Response based Integrated Plant Nutrition System (STCR - IPNS) was conducted adopting an Inductive cum Targeted yield model in vertisols of Northern Karnataka at Main Agricultural Research Station (MARS), UAS, Dharwad, Karnataka during kharif 2020-21 in...

Open access Research Article 10.9734/ijpss/2022/v34i242607