Ali Al-haj Akeel(1)*, Muhammad Nour Al-dean Al-tenbi(1), and Youssef Khoudary(2)
(1) Rural Engineering Department, Faculty of Agricultural Engineering, University of Aleppo, Aleppo, Syria.
(2) Soil & Soil Reclemation Department, Faculty of Agricultural Engineering, University of Aleppo, Aleppo, Syria.
(*Corresponding author: Ali Al-haj Akeel. E-Mail: ali.hagaqil@gmail.com).
Received: 25/02/2021 Accepted: 10/06/2021
Abstract:
The experiment was conducted with the aim of studying the effect of (the shape, weandight, and edge height) of the roller on some of the physical properties of loamy soil and the productive characteristics of the lentil Bypassingssing the roller over the soil after planting in its various forms (smooth, disc, serrated, reciprocating) and with three heights of the edge (4, 6, 8 cm) and with three weights (150, 175, and 200 kg / m), and then comparing it with the treatment of the control ( Without using a roller). The results showed that all the different treatments of the rollers increased the bulk density value and decreased the porosity value compared to the control treatment, With the exception of the disc roller treatments at all edge heights and for two weights of 150 and 175 kg / m, in addition to the treatment of the serrated roller with heights of 6 and 8 cm and the weight of 150 kg / m and the treatment the serrated roller with an edge height of 8 cm and a weight of 200 kg /m. The reciprocal roller treatment with a height of 6 cm rim and a weight of 200 kg / m allowed the highest water holding capacity of soil with a value of (33.5%), while the lowest value for the ability of soil to retain water was in the treatment of disc roller with a weight of 150 kg / m and a edge height of 8 cm. With a value of (19.6%)., The highest value of soil penetration resistance was with the effect of the 200 kg / m serrated roller with a value of (1.17 MPa), while the lowest value of the soil penetration resistance was at this depth in the disc roller treatment with a weight of 150 kg / m, edge height of 8 cm, and the value of penetration resistance ( 0.63 MPa)..The reciprocal roller treatment a weight of 200 kg / m gave the highest value of the structure coefficient (61.6%), the highest germination percentage (98.4%) and the highest seed yield (1403 kg / ha), while the lowest values of germination percentage and seed yield were recorded by the effect of treatment disc roller with a weight of 150 kg / m and a edge height of 8 cm with a value of (85%). For germination percentage and value (985 kg / ha) for seed yield.
Keywords: Germination, Porosity, Soil penetration, Rollers.
Full paper in Arabic: pdf