Abstract

The experiment was carried out in the fields affiliated with the College of Agriculture / Tikrit University, under latitude 34.6 and longitude 43.6833, for the 2022 agricultural season, to study the effect of natural organic fertilizer and poultry manure on the growth and yield of two cultivars of radish plants, as two levels of poultry manure 20 and 30 gm plant^-1 were used in addition to treatment for comparison, the other factor, cultivars , used two cultivars , one of which was local and the other was foreign . The field land was divided into terraces, The treatments were distributed randomly according to a completely randomized block design with three replicates. The results were as follows: Fertilization with poultry manure was superior in all studied characteristics plant height, percentage of dry matter in roots, root diameter, root length, plant yield from roots except for the number of leaves, and the results reached 18.13 cm, 8.29 %, 18.32 cm, 12.39 cm and 101.57 g respectively. As for the local Syrian and foreign cultivars, the local cultivar outperformed the foreign cultivar in most of the characteristics and gave the following results 21.48 cm, 8.19%, 17.05 cm, 11.64 cm, and 123.36 g, respectively. The interaction also had a significant effect, as the interaction treatment between fertilization at a level of 20 gm plant^-1 excelled with the local cultivar in the following characteristics plant height, percentage of dry matter in the roots, root diameter, and their values ​​reached 25.10 cm, 8.80%, and 20.23 cm. Respectively, as for the two traits, root diameter and plant yield from roots, the intervention treatment was superior to fertilizing the local cultivar at a level of 30 gm plant^-1 of natural poultry manure, and their values ​​were as follows: 12.91 cm and 143.95 gm.