Abstract
The study was carried out through 10th November 2019 to 27th February 2020 at Grdarasha farm - College of Agricultural Engineering Sciences - Salahaddin University- Erbil. The experiment was to evaluate the influence of Mass plant (contains IBA and NAA) and Tonic (0, 0. 3, 0.6, and 0.9%) on three radish cultivars (white, red and black) growth. The interaction treatments between Mass plant and Tonic concentrations gave significant increase of growth parameters values over control of all studied cultivars, among studied cultivars, the plants of the black cultivar showed more significant increase in plant height, number of leaves, leaves fresh weight and chlorophyll content (49.00cm 17.333, 57.600gm and 58.100spad respectively). While, the best leaf length, width and area (25.667cm, 20.667cm, and 504.133cm2 respectively) were obtained in the same treatment but with white cultivar. While, the best ones for root length (27.000cm) was registered from Mass plant application and 0.9% Tonic in white cultivar, however the same treatment on black cultivar gave the best results of root diameter, fresh weight and volume (6.333cm, 60.667g and 56.667cm3 respectively) and the highest TSS% content was obtained in two treatments of black cultivar; 0 and 0.3 Tonic both under Mass plant application.
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