تأثير سرع ومواعيد القلع للقالعة السلسلية على نسب الفقد الكمي والنوعي لمحصول البطاطا في محافظة نينوى

Abstract

This study was carried out in the Tal al-Hawa region of Rabia district, which located 95 km northwest of Nineveh Governorate / Iraq the spring season, Characterized by soils textures Clay , To study the effect of three periods for lifter cultivation potato crop class Draka (29/6 , 6/7 , 26/7 ) any after 116 , 123 , 143 day On the history of agriculture and effect three ground speeds (2,71 , 4,36 , 5,76) km/h using two- stage Turkish-mad vibrating chain separation lifter, To measure the ratio of the undamaged tubers, the quantitative & qualitative crop loss, slightly damaged tubers, severely damaged tubers & the lifted tubers. experimental design in RCBD, where factor experiment was managed in terms of three factors split block design with three replicates and the use of predictive regression equations to estimate the values of the studied characteristics of different lifter periods. The periods of lifter showed significantly higher than the second periods, with the highest ratio of the undamaged tubers77.74% , the lifted tubers 94.76% , the lowest ratio quantitative loss 5.24% , qualitative17.01% and ratio damaged tubers 79.22%. While the third periods recorded a significant superiority with the lowest , slightly damaged tubers 12.42%. The effect of the ground speed factor showed that the results exceeded the first speed of 2.71 km / h the highest ratio of undamaged tubers 77.00%, lifted tubers 94.46% and the lowest ratio of severely damaged tubers 1.93%, slightly damaged tubers 15.42%, the quantitative loss 5.63% and The qualitative loss 17.63%. The use of the first speed of 2.71 km/h on the second periods to an increase in the ratio of the undamaged tubers to 83,38 , lifted tubers 97.33 , decrease in the ratio of quantitative loss to 2.66, while the lowest slightly damaged tubers 8,95 ,lower qualitative loss 13,40 at the first speed of 2.71 at the third periods .