Yazar "Acikbas, Semih" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • [ X ]
    Öğe
    Evaluation of nutrient content of different harvest stages in switchgrass (Panicum virgatum L.) cultivars
    (PeerJ Inc., 2024) Acikbas, Semih
    Panicum virgatum L., also known as switchgrass, is a warm season short-day, C4-perennial crop gaining attention in feedstock production. The harvest stage of the forage crops and the cultivars used directly affect the feed quality as animal feed. In this study, differences were evaluated in various macro element contents of switchgrass (Panicum virgatum L.) cultivars at different harvest stages. Eight different switchgrass cultivars (Alamo, BoMaster, Kanlow, Cave in Rock, Long Island, Shawnee, Shelter, and Trailblazer) were evaluated in the study. According to the results of the study, significant differences were found among the cultivars studied for phosphate (P), potassium (K), calcium (Ca), and magnesium (Mg). The Long Island cultivar had the highest mineral concentration (0.223% P, 1.049% K, 0.581% Ca, and 0.201% Mg). As harvest proceeded, the levels of P and K in the plants decreased while the levels of Ca and Mg increased. The highest P (0.223%) and K (1.030%) values were obtained from plants harvested at the pre-flowering stage, while the highest Ca (0.538%) and Mg (0.183%) values were obtained from plants harvested at the full flowering stage. Switchgrass cultivars were found to be insufficient to meet animal needs for P and Ca content throughout the plant’s harvest stages. Mg was found to be sufficient in all harvest stages, while K was sufficient in the first two harvest stages, pre-flowering and 50% flowering, but insufficient in the full flowering stage. The dry matter’s Ca/P ratio, regardless of cultivar or harvest stage, posed no risk to animal health. The K/(Ca+Mg) ratio varied between 0.807 and 1.235 depending on the cultivar and harvest stage. This ratio does not pose any risk to animal health. Based on these results, it would be appropriate to supplement feed rations with materials containing P and Ca or to use switchgrass in animal feeding together with feeds rich in these minerals when using dry matter obtained from switchgrass cultivars alone as roughage. In general, although Panicum virgatum has an important potential as a feed source in animal nutrition, it needs to be supplemented with nutrient-containing additives. It would also be appropriate to determine the nutrient content of these varieties under different ecological conditions. Copyright 2024 Acikbas.
  • [ X ]
    Öğe
    Forage quality and mineral composition of common grasspea (Lathyrus sativus L.) genotypes
    (Polish Society Magnesium Research, 2023) Ozyazici, Mehmet Arif; Acikbas, Semih
    This study was performed to determine some forage quality properties and macronutrient content of common grasspea (Lathyrus sativus L.) genotypes under semi-arid climatic conditions. Twenty-four different common grasspea genotypes, 22 lines, and 2 registered cultivars were used as plant material. In the study, a field experiment was established according to a randomized block experimental design with 3 replications under the ecological conditions of Siirt province in the Southeastern Anatolia Region of Turkiye in 2016 and 2017. The study investigated the acid detergent fiber (ADF) ratio, neutral detergent fiber (NDF) ratio, crude protein (CP) ratio, relative feed value (RFV), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) properties. Furthermore, the Ca/P and K/(Ca+Mg) ratios, which are important for the health of animals, were also found. According to the averages of the two-year research results, the ADF ratio was determined to vary between 28.92-33.44%, the NDF ratio between 35.13-40.47%, the CP ratio between 22.30-25.78%, RFV between 146.75-176.80, P between 0.393-0.427%, K between 2.13-2.46%, Ca between 1.267-1.378%, and Mg between 0.230-0.257%. The Ca/P and K/(Ca+Mg) ratios changed between 3.14-3.48 and 0.720-0.918, respectively. According to the research results, the common grasspea genotypes grown under semi-arid climatic conditions produced feed of very good-top quality standards. It was revealed that most genotypes examined in the study were sufficient to meet the needs of ruminates in terms of P, K, Ca, and Mg. However, some genotypes were insufficient, especially in terms of Mg.
  • [ X ]
    Öğe
    Root system architecture and seed weight relations in forage pea (Pisum sativum ssp. arvense L. Poir.)
    (Univ Federal Santa Maria, 2022) Acikbas, Semih; Ozyazici, Mehmet Arif; Bektas, Harun
    Forage pea (Pisum sativum ssp. arvense (L.) Poir.) is an important legume crop for fresh and dry herbage production with high input costs as irrigation and fertilization. Selection and breeding of accessions for improved drought tolerance, water, and mineral uptake efficiency become a necessity, rather than a choice. This study evaluated a set of forage pea accessions for the seedling root system architecture diversity and seed reserve utilization, under controlled conditions. Eight cultivars and an elite breeding line were evaluated for the first time in a plexiglass system. The number and lengths of the roots in each depth zone (0, 5, 10, 15+ cm) were evaluated and significant diversity was identified. The cultivar Livioletta had the highest number of roots and total root length. There was a significant correlation between seed weight, seed reserve utilization ratio, and root system vigor. Accessions with the highest seed reserve utilization had the highest total root length and numbers. Seedling root system vigor seems to be effective in predicting the fate of the accessions through maturity. The results suggested a possibility of seedling root selection for forage crop breeding.