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Articles by Suleyman Sengul
Total Records ( 3 ) for Suleyman Sengul
  Suleyman Sengul
  The yield potential of sainfoin (0nobrychis sativa) and alfalfa (Medicago sativa L.) mixtures was estimated with tall wheat grass (Agropyron elongatum), creasted wheat grass (Agropyron cristaturn) , and smoot bromegrass (Bromus inermis) under dry land conditions. The mixtures sown as cross like, legumes species were seeded one direction and grasses the other. Seeding rate were 8.0 kg sainfoin, 4.0 kg alfalfa, and 3.0 kg grasses per decar (1/10 ha-1). Mixtures used 50% of legumes and grasses. 5.0 kg P205 in autumn, and 5.0 kg N were applied in spring for one of each subplots. The contribution of the mixtures of alfalfa and sainfoin with grasses to the hay yield ranged with years. The rate of alfalfa and sainfoin in mixtures decreased with years. The use of fertilizer increased rate of grasses in mixtures with eventually dominated the mixtures. Under dry land conditions, mixture of grasses with legumes appear to be well suited for the establishment of dry land pastures and hay crops, either use one grasses or legumes, or one legumes two grasses mixture. Those would greatly increased the yield of hay and crude protein content over the now prevailing unimproved pastures made up of poor yielding grasses with little or no legumes present.
  Suleyman Sengul
  Twelve native alfalfa (Medicago sativa L.) land races material from Van provinces in Turkey for 10-30 years in the same field in Turkey were investigated in this study. Seed used in this experiment are Adiguzel-2, Ahlat-3, Alakoy, Cayirbasi , Dilburnu, Ercis-3, Gulgoren, Gulsinberk, Hidirkoy-2, Kasumoglu-2, Mahmudiye, Otluca ecotypes and Kayseri population (as a check). Seeds planted in September 1999 and greenhouse for shoots measurements before flowering period. Plants harvested early flowering period. The result taken from this experiment clearly showed that there could be variation in yielding and chemical composition. There are significant differences in plant height, stem number, stem size, internode number, internode length, leaf area, leaflet length, dry matter yield, crude cellulose, crude protein, P, K, Ca and Mg rate and total non structural carbohydrates content (P<0.05). The longest stem was measured with Mahmudiye ecotypes (94.1 cm) besides 43.4 stem per plant observed with Kas mo lu ecotypes. Erect form of Cayirbasi ecotypes had the longest leaflet size (29.28 mm). The differences could be seen most clearly in crude cellulose Erci -3 ecotype had the lowest CC (194.2 g kg -1)). On the other hand promising ecotypes were Cayirbasi , Kasimoglu-2, Gulgoren, and Hidirkoy as a high yielding 37.7, 36.8, 35.4, and 33.1 g per plant respectively. Variation among alfalfas from this region may be especially valuable to conserve and utilize these germplazm resources.
  Suleyman Sengul and Meryem Sengul
  Path analysis was performed on plant characters in spaced plants of land races alfalfa (Medicago sativa L.) to determine: seed yield per plant, stem number, internodes number, plant height, blooming periods, leaf length, raceme length, number of pods per raceme, number of seeds per raceme, number of seeds per pod, 00-seed weight. Positive relationships existed between seed yield and all its components with the exceptions of the internodes numbers, blooming periods and 1000-seeds weight. Significant correlation with seed yield was found for plant height, number of pods per raceme and the number of seed per raceme. Raceme length coefficient was highly significant (R = 0.786**), very high negative correlation found with the blooming periods (R = -0.625). Plant height, seeds per raceme, seeds per pods and 1000-seed weight had strong direct effects, while other components had strongly negative or negligible direct effects. The indirect effects via leaf length and blooming period were major determinants of the main effects of all components for the seed yield of the alfalfa. Positive direct effect of plant height, raceme length, number of pods per raceme and number of seed per raceme suggested that these yield components may be good selection criteria to improve seed yield of alfalfa cultivars.
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