Influence of sowing dates on yield and its components on performance of new genotypes of soybean (Glycine max L.) in Middle and North Egypt | ||||
| Egyptian Journal of Agronomy | ||||
| Volume 47, Issue 3, September 2025, Page 481-497 PDF (635.84 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/agro.2025.383894.1692 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sayed Ahmed Safina1; Hashim Mohamed Abdel-Lattif2; mostafa Mohamed Soliman3; Esraa Eraky Hassan  4
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| 1Agronomy Department, Faculty of Agriculture, Cairo University, Giza, Egypt | ||||
| 2Agronomy Department, Faculty of Agriculture, Cairo University, Egypt. | ||||
| 3Department of Agronomy Faculty of Agriculture Cairo University | ||||
| 4Department of Agronomy Faculty of Agriculture Cairo university Egypt | ||||
| Abstract | ||||
| Soybean yields are influenced by numerous factors, including environmental conditions, location, and agricultural practices. Field experiments were conducted during the 2023 and 2024 summer seasons at Mallawi and Etai El Barood Agricultural Research Stations to evaluate the performance of five new soybean genotypes (H6 L198 "Misr 6", H10 L288 "Misr 10", H1 L3, H4 L4, H18 L54) compared to two standard cultivars (Crawford and Giza 111) under three sowing dates (May 15, May 30, and June 15). The objective was to assess the interaction effects of genotype and sowing date on seed yield and its components. Results showed significant variation in pod number, seed number per pod, 100-seed weight, and overall yield depending on the genotype, sowing date, and location. The highest number of pods per plant and seed yield per plant and feddan were generally recorded for the Crawford cultivar sown on May 15 at Mallawi. At Etai, genotype H4 L4 sown on May 15 outperformed other entries. In contrast, late sowing on June 15 significantly reduced pod and seed production across genotypes, especially in H10 L288 and Giza 111. The highest 100-seed weight was observed in Crawford when sown early, while Giza 111 under late sowing produced the lowest weights. These findings highlight the importance of selecting appropriate genotypes and optimal sowing dates for maximizing soybean productivity in different agro-climatic zones. Early sowing of high-performing genotypes, particularly Crawford and H4 L4, is recommended to enhance yield potential under Egyptian conditions | ||||
| Keywords | ||||
| Soybean; Environmental Conditions; Climate; Genotype Adaptation; Agronomic Performance | ||||
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