Determination of Yield and Agronomic Characteristics of Some Soybean Genotypes Suitable for Double Crop Agriculture in Mediterranean Climate Conditions

As a source of oil, protein, biodiesel, etc., soybean (Glycine max L. Merr.) is the fourth widely grown crop in the world. In Mediterranean climate conditions, soybean can be produced as a double crop. This study was conducted at the experimental area of Department of Field Crops, Faculty of Agriculture, Ege University in Turkey (2016) to determine yield and important agronomic traits of some soybean varieties and lines under double crop conditions. Ten advanced soybean lines and four registered varieties (KASM-03, KASM-02, KANA, KAMA, BDUS-04, BATEM 207, BATEM 223, BATEM 306, BATEM 317, BDSA 05 and ARISOY, ATAEM-7, BRAVO, NOVA) were used as a plant material. Field trial was conducted in a randomized complete block design (RCBD) with four replications. Results from the analysis of variance for all traits (grain yield, plant height, first pod height, pods per plant, days for maturity, days for flowering, 1000-seed weight) indicated large variations among the genotypes. Although the lines KASM-02 (3519.5 kg ha⁻¹), BATEM 207 (3456.7 kg ha⁻¹) and BATEM 223 (3414.2 kg ha⁻¹) provided the best result for grain yield, according to earliness, ARISOY, ATAEM-7 and BRAVO registered varieties were showed better performance rather than advanced lines used in the study. As a result, genotypes with high grain yields but with late maturing times are tested under the main product conditions.