మా గ్రూప్ ప్రతి సంవత్సరం USA, యూరప్ & ఆసియా అంతటా 3000+ గ్లోబల్ కాన్ఫరెన్స్ ఈవెంట్లను నిర్వహిస్తుంది మరియు 1000 కంటే ఎక్కువ సైంటిఫిక్ సొసైటీల మద్దతుతో 700+ ఓపెన్ యాక్సెస్ జర్నల్లను ప్రచురిస్తుంది , ఇందులో 50000 మంది ప్రముఖ వ్యక్తులు, ప్రఖ్యాత శాస్త్రవేత్తలు ఎడిటోరియల్ బోర్డ్ సభ్యులుగా ఉన్నారు.
ఎక్కువ మంది పాఠకులు మరియు అనులేఖనాలను పొందే ఓపెన్ యాక్సెస్ జర్నల్స్
700 జర్నల్స్ మరియు 15,000,000 రీడర్లు ప్రతి జర్నల్ 25,000+ రీడర్లను పొందుతున్నారు
Hailu Lire Wachamo, Amsalu Nebiyu, Tesfaye Shimbir
Roselle (Hibiscus sabdariffa L.) is an important beverage and leafy vegetable plant. Constraints such as poor soil fertility and a lack of improved varieties have an impact on its growth and yield characteristics. A field trial was conducted to evaluate Roselle’s calyx yield response and nitrogen use efficiency. In this study, two roselle varieties (WG-Hibiscus-Jamaica and WG-Hibiscus-Sudan) and six levels of nitrogen fertilizer (Kg ha-1 (0, 23, 46, 69, 92, 105) were used in a factorial combination arrangement with three replications in a randomized complete block design. Data on calyx yield, growth variables, and nitrogen use efficiency parameters were recorded. WG-Hibiscus-Jamaica exhibited higher plant height (196.2cm) and branch number plant-1 (34.9) from the application of 115kg ha-1 N, while lower values were recorded on an unfertilized plot of both varieties. Variety WG-Hibiscus-Sudan exhibited the highest number of calyx plant-1 (50.3), fresh calyx yield ha-1 (5934 kg), and dry calyx yield ha-1 (1866 kg) from the application of 92 kg ha-1 N, while lower values were recorded from the unfertilized plot of the WG-Hibiscus-Jamaica variety. A higher nitrogen efficiency ratio (42.5 kg kg-1) was recorded from WG-Hibiscus-Sudan while a lower value was recorded from WG-Hibiscus-Jamaica. Higher (12.5kg) and lower (0.7kg) agronomic efficiency were recorded from the application of 92 and 115 kg ha-1 N respectively. WG-Hibiscus-Sudan was effective but not reactive, while WG-Hibiscus-Jamaica was not effective but reactive. In conclusion, for maximum commercial produce, calyx yield and profitability, applying 69 kg ha-1 N on WG-Hibiscus-Sudan and 92 kg ha-1 on WG-Hibiscus-Jamaica was found best.