Journal of Researches in Mechanics of Agricultural Machinery

Journal of Researches in Mechanics of Agricultural Machinery

Influence of tillage methods and vine killing on some physical properties and surface hardness of potato tuber

Authors
RamazanAli Mahmoodieh
Saeid Minaei
Mohammadali Ghazavikhorasgani
Mortaza Almassi
Abstract
A‎ field study was conducted to compare the effects of four primary tillage implements (moldboard (MB), disk (DP), improved disk (IDP) and chisel (CH) ‎plows) and two vine killing methods (vine killed (VK) and without vine killing (NVK)) on some physical and hardness properties of potato tuber. The study was conducted using a 4‎‏×‏‎2 factorial experiment (strip plots) ‎with a randomized complete block design. Eight ‎treatments representing four primary tillage implement levels and two levels of ‎vine killing were replicated three ‎times. The results showed that tuber dry matter content in "MB.NVK" and "DP.NVK" treatment was significantly higher than that of "IDP.VK" at 5%‏ level. The multiple linear regression analysis with stepwise method showed that there was a linear regression model between tuber dry matter content and wet weight, moisture content, maximum diameter and spherisity.
Keywords
Vine killing-Surface hardness-Potato-Dry matter-Tillage-Physical properties-