Work

The Jyndevad Experiment: Revealing long-term interactions between liming and phosphorus fertilization in a coarse sand soil

Year: 2024

Type: article

Abstract: The Jyndevad field experiment, initiated in 1942 on a coarse sand soil in South of Denmark, explores the effect of four liming levels (0, 4, 8 and 12 Mg lime ha −1 ). These were in 1944 combined with two levels of mineral phosphorus (P) fertilizer (0 and 15.6 kg P ha −1 year −1 ), with or without a high initial dose of 156 kg mineral P ha −1 . This study assesses interactions between liming and P fertilization on soil pH, Olsen-P contents and barley yields covering the last three decades. Annual P application improved barley yield regardless of liming, but the optimal liming level differed from year to year. This emphasizes the need for long-term field experiments to detect the complex interactions between liming and P availability on crop performance. The initial high P dose in 1944 and annual P fertilization increased Olsen-P contents in soil. The unlimed soil with pH(CaCl 2 ) values below 4 had the highest Olsen-P content. The Jyndevad Experiment now harbors wide gradients in soil P (Olsen-P contents: 9–82 mg P kg −1 soil) and pH (3.6–6.9), providing a unique research platform for future studies on interactions between liming and P fertilization on coarse sand soils. We present a selection of studies that have used the Jyndevad Experiment to illustrate the research potential of the experiment. • Initiated in 1942, the experiment explores effects of liming and P fertilization. • P fertilization increased Olsen-P contents and barley yields at all liming levels. • The amount of Olsen-P in soil increased with decreasing soil pH. • Heavy liming increased barley yields in some years, but reduced them in others. • The wide gradients in soil pH and P provide a unique resource for future research.

Source: European Journal of Agronomy

DOI: 10.1016/j.eja.2024.127392

Authors: Ingeborg F. Pedersen, Jørgen Eriksen, Bent T. Christensen, Gitte H. Rubæk

Institution: Aarhus University

Language: English

Topic: Agricultural Science and Fertilization

Subfield: Soil Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Zero hunger, Life on land

Open Access status: hybrid

Estimated APC paid: $3,450