HUBUNGAN KERAPATAN PANJANG AKAR TANAMAN SALAK PADANGSIDIMPUAN DENGAN KEDALAMAN EFEKTIF TANAH DI KECAMATAN ANGKOLA BARAT
Abstract
Abstract
Salak Padangsidimpuan (Salacca sumatrana Becc) is the pre-eminent fruit in the city of Padangsidimpuan and South Tapanuli. The rooting structure of the salak plants is a fiber root that depends heavily on the effective depth of the soil. The rooting structure of the salak plants is a fiber root that depends heavily on the effective depth of the soil. This research was conducted from April to June 2017 on Inceptisol and Entisol land with altitude of 350-880 m asl in West Angkola subdistrict. This study aims to evaluate the relationship of root length density to the effective depth of soil. The method used in this research is survey method. Observation method using soil excavation method (Rooth Trenching Profile) with location determination based on land unit. The data analysis used linear regression. The calculation result that the highest root density is 1.440 cm cm-3 with effective depth of 100 cm in ha.1.3.3 land unit. The result of linear regression equation relation of root length density with effective depth of soil that coefficient of determination R2 is 0.466. Calculation of root density obtained in the field is known that the roots of salak plants are very helpful in infiltration process.
