Bradyrhizobium and humic substances fertigation improved fertility and productivity of drip-irrigated sandy soil: Field observations on peanut (Arachis hypogaea L.)
Year: 2020
Type: article
Abstract: Two field experiments were carried out during 2016 and 2017 summer seasons in Randomized Complete Block Design (RCBD) with five replicates under the ecological conditions of Noubaria District, Beheira Governorate, Egypt to evaluate the applicability potential of Bradyrhizobium and humic substances fertigation for improving soil fertility and productivity of peanut grown on a dripirrigated sandy soil compared to compost and mineral fertilizers applications.Physicochemical analysis revealed the high nutrients content of humic substances as well as their nano-sized diameter and abundance of active functional groups.Organic inputs (compost in particular) improved water retention and the lateral water movement in the rhizosphere compared to the prevalence of gravitydominated vertical movement in the mineral fertigation treatment.Compost application recorded the highest soil organic matter content, which decreased soil pH value.However, Bradyrhizobium and humic substances fertigation exhibited the highest concentrations of available nutrients (N, P and K) and nodulation parameters (nodules number and their dry weight) compared to compost and mineral fertilizers.Although mineral fertigation induced the highest vegetative growth characters, Bradyrhizobium and humic substances fertigation elicited the highest quantitative and qualitative yield indices.The current study, provides insights into the potential fertigation of N-fixing bacteria alongside with humic substances for maximizing water and nutrient supply potentials of drip-irrigated sandy soils.
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W4247880179