Abstract
A field experiment was conducted during autumn season 2018 in Al-Qurna Agriculture research station which is located in about 70 km away north of AL-Basrah Center at 47°.45’ east longitude and 31°00’ north latitude. The aim is to Study the effect of three tillage systems (No tillage; T1, chisel plow a depth of 30 cm plowing + 10 cm disc harrows a depth of 10 cm; T2, Moldboard plow a depth of plowing 30 cm + disc harrows a depth of 10 cm; T3) on some growth characters of some maize genotypes (Zea mays L.). The genotypes were Fajer-1 (V1), Baghdad-3 (V2), Al-Maha (V3), Sara (V4). The design of the experiment was randomized complete block design (RCBD) in a split plot arrangement with three replications. The results showed that the tillage system T3 was superior as compared to other tillage systems in stem diameter, while as the treatment T2 was superior in number of days up to 50% tasseling and leaf area. The cultivar Maha (V3) was superior as compared to other cultivars in number of days up to 50% tasseling and leaf area. The interaction between corn genotypes and tillage system was significant on leaf area, that is the genotype V3 under the tillage system T2 gave the highest leaf area reached to 4847.893 cm2.
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