Ashok

Fertigation and Irrigation Scheduling in Tomato (Solanum lycopersicum L.) under Naturally Ventilated Polyhouse: Effects on Growth, Yield, Quality and Nutrient Use Efficiency

M. Deviprasad, K. H. Yashavantakumar, Vijaykumar Rathod, Noorulla Haveri, Ashok & Sayeed Almas Rajesaheb Mulla · Asian Journal of Soil Science and Plant Nutrition · 2026

Background: Tomato production under naturally ventilated polyhouse conditions requires precise management of irrigation and nutrient supply to achieve high productivity while improving water and nutrient use efficiency. Drip irrigation scheduled according to crop evapotranspirati...

Open access Research Article 10.9734/ajsspn/2026/v12i4777

Influence of Different Fertigation Levels and Nano-Nutrients on Growth, Yield and Quality of Onion (Allium cepa L.) cv. Bhima Super under Dryland Conditions

S. R. Tharani Tharan, Raveendra S. Jawadagi, Imamsaheb Jatth, Sanjeevraddi G. Reddi & Ashok · Asian Journal of Soil Science and Plant Nutrition · 2026

Onion (Allium cepa L.) is a major foreign-exchange-earning horticultural crop in India. However, its shallow root system and high NPK requirement make conventional soil-based fertilisation inefficient, particularly under water-scarce dryland conditions. Water-smart approaches suc...

Open access Research Article 10.9734/ajsspn/2026/v12i4769

Optimizing Fertigation Levels for Enhanced Growth, Yield, Earliness and Soil Nutrient Dynamics in Okra [Abelmoschus esculentus (L.) Moench] cv. Arka Nikita

Kushal V. Gowda K., H. P. Hadimani, K. H. Yashavantakumar, Praveenkumar B. Naikodi, Sanjeevraddi Gurubasappa Reddi & Ashok · Asian Journal of Soil Science and Plant Nutrition · 2026

Okra [Abelmoschus esculentus (L.) Moench] is an economically important vegetable crop, but conventional flood irrigation with blanket fertilizer application restricts nutrient-use efficiency to 40-60%. Such practices also accelerate nutrient leaching, soil degradation and environ...

Open access Research Article 10.9734/ajsspn/2026/v12i4780