Vol: 35 Page: 187

Authors:
Marcin Kozak
Michał Stępień

Title:
 Application of path analysis to assess affecting spring triticale grain yield by soil properties in acid soil environment

Language: English

Keywords:
path analysis
soil properties
grain yield
spring triticale

Summary:
In the paper application of the path analysis in investigating an influence of soil properties on plant traits is presented. We studied spring triticale cv. Jago grain yield as affected by nine chemical soil properties, which were: pH; hydrolytic acidity; content of exchangeable aluminum, calcium, magnesium, potassium; content of available phosphorus and potassium; and total nitrogen content. The experiment regarded acid soil environment. To assess affecting yield by the soil properties, the multiple linear regression and the backward selection was employed at first. Four the most important soil properties in affecting grain yield were selected: pH, exchangeable and available potassium content, and total nitrogen content. To give an overall view on affecting grain yield by these soil properties, the path analysis was applied. The most important in yield formation appeared to be pH. Available potassium content and total nitrogen content influenced grain yield negatively. The determination coefficient of grain yield by the four selected soil properties was 84.2%. The path analysis occurred to be useful and convenient in interpretation statistical method to investigate plant-soil interactions in terms of affecting yield of studied plant by soil properties.