Combined Analysis over the Years on the Influence of Foliar Application of Kappaphycus Seaweed-based Biostimulant on the Yield of Two Different Varieties of Black Gram (Vigna mungo (L.) Hepper)
Vijay Anand K. Gopalakrishnan *
Applied Phycology & Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar- 364002, Gujarat, India and Department of Crop Physiology, Palli-Siksha Bhavana, Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal – 731236, India.
Sananda Mondal *
Department of Crop Physiology, Palli-Siksha Bhavana, Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal – 731236, India.
Pradip Vaghela
Applied Phycology & Biotechnology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar- 364002, Gujarat, India and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India.
Debasish Panda
Department of Crop Physiology, Palli-Siksha Bhavana, Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal – 731236, India.
Arup Ghosh
Department of Crop Physiology, Palli-Siksha Bhavana, Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal – 731236, India and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India.
*Author to whom correspondence should be addressed.
Abstract
Experiments were conducted in a split-plot design with the different concentrations of Kappaphycus alvarezii seaweed extract (KSWE; 0%, 5%, 10%, 15%, and 20%) along with recommended dose of fertilizers (RDF) assigned to the main plots and varieties (TAU-1 and DBGV-5) assigned to the sub-plots at the net house facility of CSIR-Central Salt & Marine Chemicals Research Institute during the Kharif season of 2019 and 2020, in order to investigate the influence of (KSWE on two black gram varieties, DBGV-5 and TAU-1, at a single location over two years. KSWE was foliar applied 3 times at 20, 40 and 60 DAS and various yield and yield attributes were measured. Combined analysis over the years revealed that the response of black gram varieties to KSWE varied between years, with significant improvements in yield and its attributes in 2020 as compared to 2019. KSWE concentration at 5% concentration was optimal, enhancing seed yield by 14.1% over the control and improving most yield parameters except pod length and seeds per pod. Yield attributes like pod numbers and total seeds per plant were enhanced by 9 and 10.7%, respectively, over control by this factor (KSWE concentration) at 5% level. No significant interaction was observed between KSWE concentration and variety, indicating consistent effectiveness across different black gram varieties.
Keywords: Seaweed extract, black gram, Kappaphycus alvarezii, variety, biostimulant