Correlation of Soil Chemical Properties which Affected by Various Organic Matters on the Productivity of Leeks (Allium ampeloprassum L.)

Abstract

This study aims to determine the correlation and effect of soil chemical properties affected by various organic materials on the productivity of leeks. Samples collected in Lumban Lobu, Bonatua Lunasi, Toba Samosir started from February until June 2018. This study aims to determine the correlation and effect of soil chemical properties affected by various organic materials on the productivity of leeks. Samples collected in Lumban Lobu, Bonatua Lunasi, Toba Samosir started from February until June 2018. This study used Accidental Sampling where land each plot affected by Tithonia compost, market compost, cow urine Liquid Organic Fertilizer and market Liquid Organic Fertilizer. Soil chemical parameters included pH, organic C, N total.  Plant parameters included the number of leaves, number of tillers, and fresh weight of leek. Data were tested by correlation and regression analysis. The results showed that of all organic matter only market compost can increase soil pH and even this soil pH only increases the production of leeks.