Document Type : Original Article
Authors
1
Department of Agricultural Science, Technical and Vocational University (TVU), Tehran, Iran
2
MSc Graduate in Agronomy, Lecturer in Samangan Agriculture Faculty, Technical and Vocational University
3
Professor assistant, Plant & Seed Improvement Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, Mashhad, Iran
10.48301/kssa.2023.379471.2397
Abstract
In order to evaluating the efficacy of biological and organic fertilizers in increasing soybean yield, an experiment was conducted in the Bojnord Azad Islamic University in 2019 as RCBD in split plots with three replications. The main plot included Hobbit and L17 cultivars. The sub plot included fertilizer arrangement as soybean seed inoculation with Rhizobium (Bradyrhizobium japonicum) biofertilizer, nitrogen fertilizer (Urea, N 45%) application as basal-dressing plus top-dressing, soybean seed inoculation with Rhizobium biofertilizer plus nitrogen fertilizer application as basal-dressing plus top-dressing, seed treatment of humic acid plus top-dressing application of humic acid, seed treatment of humic acid plus application of basal-dressing nitrogen and top-dressing of humic acid. The results showed that, except control treatment, the hundred seeds weight of soybean in the Hobbit cultivar was not significantly affected by fertilizer treatments. The highest grain yield of Hobbit and L17 cultivars obtained 5767 and 5600 kg ha-1, respectively when seed treatment of humic acid plus basal-dressing nitrogen and top-dressing of humic acid in the flowering stage of soybean was applied. However, in cultivar L17, except control, there was no significant difference between all fertilizer treatments in grain yield. The soybean highest biological yield was obtained 1.73 kg m-2 when soybean seeds inoculated with rhizobium and nitrogen fertilizer applied as basal-dressing and top-dressing. Finally application of humic acid as seed treatment and top-dressing plus basal nitrogen fertilizer application or rhizobium inoculation plus nitrogen fertilizer basal-dressing and top-dressing application induced proper grain yield in Hobbit and L17 cultivars of soybean.
Keywords
Main Subjects
)