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Response of Different Bio-stimulants on Growth, Phenology, Soil and Yield Attributes of Summer Moongbean (Vigna radiata)

ROHIT KUMAR, RITIK KUMAR, MANINDER SINGH* AND ANITA JASWAL
Department of Agronomy, School of Agriculture, Lovely Professional University, Phagwara-144 411 (Punjab), India
*(e-mail: ms23049@gmail.com Mobile: 94642 13830)
(Received: March 5, 2024; Accepted: April 19, 2024)

ABSTRACT

The present field work was conducted to evaluate the effect of different bio-stimulants on the growth, soil and yield attributes of summer moongbean (Vigna radiata). The experiment was laid out in randomized block design with three replications at the farm of the Department of Agronomy, Lovely Professional University. A total of seven treatments were utilized with varying levels of RDF and bio-stimulants on moongbean growth, soil and yield attributes. With an increase in the concentration of bio-stimulants (humic, fulvic and tryptophan), the growth characteristics including plant height, plant population, fresh weight, dry weight, leaf area index, crop, relative growth rate and net assimilation rate were significantly improved. Among the various treatments T5 (RDF+5 g/l FA) showed maximum plant height (49.61 cm), plant population (91.67), fresh weight (7.87 g), dry weight (2.17 g), leaf area index (84.72), crop growth rate (89.57), relative crop rate (178.62) and net assimilation rate (94.49). The phenological and plant attributes of moongbean were maximum at T5 (RDF+5 g/l FA) followed by T7 and T4 treatments. Soil analysis of moongbean had significant impact of bio-stimulants on pH, EC, organic carbon, nitrogen, potassium and phosphorus elements. Furthermore, yield attributes improved with an increase in bio-stimulants (humic, fulvic and tryptophan) and treatment T5 (RDF+5 g/l FA) had maximum number of pods/plant, pod length, pod dry weight, number of seeds/pod, 1000-seed weight, seed yield, biological yield and harvest index followed by T7 (RDF+1 g/l tryptophan) and T4 (RDF+2.5 g/l FA) treatments. Among the various treatments, the application of T5 (RDF+5 g/l FA) had a significant impact on various growth, phenological, soil, plant and yield attributes. Fulvic acid and tryptophan significantly increased seed yield, biological yield and harvest index demonstrating its positive impact on the overall crop production of moongbean.
Key words: Bio-stimulants, fulvic acid, growth, humic acid, moongbean, plant, soil, yield attributes, sustainability