Effect of methods and timing removal of potato crop vegetative part in the quantitative and qualitative loss with two kinds of Lifters

M. A. Seddiq, Arkan

doi:10.58928/ku12.03214

	Effect of methods and timing removal of potato crop vegetative part in the quantitative and qualitative loss with two kinds of Lifters
Kirkuk University Journal for Agricultural Sciences (KUJAS)
Article 1, Volume 3, Issue 2, 2012, Pages 169-186 PDF (862.37 K)
Document Type: Research Paper
DOI: 10.58928/ku12.03214
Author
Arkan M. A. Seddiq
Abstract
This study carried out on potato crop of the category for LATONA in Hawi Al-Kanisa region in Mosul city, which was marked by loamy soil textures. The experiment included a study of the impact of three dates for the process of cutting the vegetation after cutting irrigation to 7 , 10 and 13 days, and the impact of two methods for cutting the vegetation with Mower and hand sickle, and the effect of two types of lifting machines first Algerian made type PAM with a separating chain in one phase and the second one Japanese type duck foot lifter. To measure rates of Undamaged tubers, Quantitative Loss, Slightly damage tubers, Sever damage tubers and the values of Damage Index. The data were analyzed statistically by Randomized Complete Block Design in Split Split Experiment, and SAS program were used to analyze data and compared it with Duncan test. The regression equations were used to estimate values of studied properties and to determine the best time to cut off irrigation before cutting the vegetation. The study showed that the best value for the Damage Index 183.6 was at cutting the vegetative parts after cutting irrigation by 7 days of what has made less of a quantitative loss 6.88% despite of the high rate of slightly damaged tubers 27.43% in it. While the best rates recorded for all properties with separating chain lifter to achieve the highest rate of Undamaged tubers 61.95% and the lowest rate of Severe damaged tubers 12.78% and 8.22% for quantitative loss and the best value for the Damage Index which stood at 174.2. The study proved that the method of removal by vegetative machete gave the best condition of all the studied properties by giving less value for the Damage Index 170.0. The results showed that it can rely somewhat on the equations of predictive values of Severe damaged tubers and Slightly damaged tubers, and the values of the coefficient of determination R2 showed that the change in the rates of these properties were returning causes at high degree to the impact of difference in dates of irrigation cutting and the vegetation.

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