Effects of iron sources and doses on plant growth criteria in soybean seedlings

Abstract

In this study, effects of different iron sources and doses on plant growth criteria in soybean (Glycine max L.) seedlings were investigated. The experiment was conducted according to factorial experimental design with three replications under controlled conditions. Atakişi variety of soybean (Glycine max L.) cultivar was used as a plant material. Three soybean seeds were sown each plastic pot having 1.3 kg soil:sand mixed in 1:1 ratio. Three different Fe sources (FeSO4.7H2O, Fe-EDDHA and nanoFe) were applied to the pots with three different doses (0-15-30 mg Fe kg-1). The experiment was ended after five weeks of seed sowing. Shoot length, shoot fresh and dry weights, root length, root fresh and dry weights and number of compound leaf in soybean seedlings were determined at the end of the experiment. The highest shoot fresh and dry weights, root fresh and dry weights, compound leaf number were determined in 15 mg kg-1 nano Fe applications as 3.56 g, 0.83 g, 2.30 g, 0.33 g and 5, respectively. Increasing the application dose of nano-Fe from 15 to 30 mg kg-1 caused to decrease in fresh and dry weights in soybean seedlings. Generally, shoot growth decreased and root length increased in soybean seedlings by increasing Fe application doses. Seedling growth in soybean generally increased depend on the Fe sources in the following order; FeSO4.7H2O < Fe-EDDHA < nano-Fe.

Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping

“…In another study, the lower component yield and weak growth of soybean crop were mainly because of soybean lodging due to the shade of maize in maize-soybean intercropping (Hussain et al, 2021). However, soybean retains its growth and yield under different environmental stresses when fertilized with optimal fertilizer application of N, P, Fe, and Mo (Gai et al, 2017;Gülser et al, 2019;Seleiman et al, 2021;Mirriam et al, 2022;Oliveira et al, 2022). The leaf area is the key source of carbon assimilation and light interception while chlorophyll is an important pigment involved in not only the absorbance of solar energy but also in its transmission and conversion into electrochemical energy.…”

Growth response of three forest seedlings to iron exposure

“…The increase in Fe concentration was able to reduce the growth of the three seedlings. The results of several studies also reported that increasing the concentration of Fe can reduce plant growth, such as pineapple [18], Vaccinicum macrocarpon [19], soybean [20,21], and Disccorea spp. [22].…”

Fe toxicity in plants: Impacts and remediation

“…Gülser et al (2019) reported that increasing Fe dose from different sources decreases most of the growth‐related attributes except root length of soybean ( Glycine max L.). Similarly, high dose of Fe in rice ( Oryza sativa L.) plant reduces the plant height, number of tillers, and increases panicle sterility (Audebert, 2006b).…”