Effects of Sowing Methods and Intra-Row Spacing on Grain Yield and Some Agronomic Characters of Maize (Zea mays)
Abdelrahman Mohammed Ahmed Hamid, Yasin Mohammed Ibrahim Dagash, Samia Osman Yagoub Ali, Gafar Ali Farah, Gamar Aldawla Abdel Motalib Ahmed, Osman Ahmed Ali

Abstract
Effects of sowing methods and intera-row spacing on grain yield and some agronomic characters of maize was investigated at the Demonstration Farm, Sudan University of Science and Technology, College of Agricultural Studies, Shambat, Khartoum North, during two consecutive seasons of 2019/20 and 2020/21 to study the effects of three sowing methods and five intra-row spacings on some agronomic characters of plants including; plant height, stem diameter, leaf area index, number of rows/ear, number of kernels/ row, number of kernels per Ear, 1000-kernels weight and grain yield, Hudeiba II cultivar was used. The experimental design was a randomized complete block design in split plot arrangement with three replications. Main plot were sowing methods (drilling, ridging and terrace) and subplots were intra-row spacing (10, 15, 20, 25, and 30 cm), plant densities of intra-row spacings are (10, 6.67, 5.0, 4.0 and 3.33 plants m-1) respectively. Significant effects of interaction of sowing methods and intra-row spacing were observed at plant height and stem diameter, for other traits, effects of sowing methods was highly significant at number of kernels per row, and significant at leaf area index, number of rows per ear, intra-row spacing was highly significant at all parameters under investigation. The highest grain yields (3.53 and 3.20 t.ha-1.) were obtained from two ways (interaction of SM2 ×20 cm and 20 cm intra-row spacing) and interaction of SM1× 20 cm respectively, while the lowest (2.07 and 2.0 t.ha-1) grain yield were obtained from SM3× 10 cm and SM3× 30 cm, respectively.

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