Yield of Roselle (Hibiscus sabdariffa L.) as Influenced by Manure and Nitrogen Fertilizer Application  

作　　者：Julius Yirzagla Peter Quandahor Ophelia Asirifi Amoako Listowel Atiwin Akologo John Bokaligidi Lambon Abdul-Wahab M. Imoro Kwadwo Gyasi Santo Olivia Aguriboba Akanbelum Julius Yirzagla;Peter Quandahor;Ophelia Asirifi Amoako;Listowel Atiwin Akologo;John Bokaligidi Lambon;Abdul-Wahab M. Imoro;Kwadwo Gyasi Santo;Olivia Aguriboba Akanbelum(CSIR-SARI, Nyankpala, Ghana;Gbewaah College of Education, Pusiga-Bawku, Ghana;CSIR-Head Office, Accra, Ghana;TC.K. Tedam University of Technology and Applied Sciences, Navrongo, Ghana;University of Energy and Natural Resources, Sunyani, Ghana;St Vincent College of Education, Yendi, Ghana)

机构地区：[1]CSIR-SARI, Nyankpala, Ghana [2]Gbewaah College of Education, Pusiga-Bawku, Ghana [3]CSIR-Head Office, Accra, Ghana [4]TC.K. Tedam University of Technology and Applied Sciences, Navrongo, Ghana [5]University of Energy and Natural Resources, Sunyani, Ghana [6]St Vincent College of Education, Yendi, Ghana

出　　处：《American Journal of Plant Sciences》2023年第5期599-612,共14页美国植物学期刊（英文）

摘　　要：Field experiments were carried out on roselle (Hibiscus sabdariffa L) during the 2019 and 2020 cropping seasons at the CSIR-SARI Research Station at Manga in the Upper East Region of Ghana. The aim of the experiment was to study the response of roselle to cowdung, nitrogen fertilizer and their interaction on the growth and yield of roselle. The treatments consisted of factorial combination of five rates of cowdung (0, 1.5, 2.5, 3.5 and 4.5 t/ha) and five levels of nitrogen (0, 20, 40, 60 and 80 kgN/ha) laid out in a randomized complete block design and replicated three times. Data were collected on days to 50% flowering, plant height, number of leaves per plant and dry calyx yield. The results indicated that differences in dry calyx yield due to the manure and nitrogen fertilizer effects were highly significant (P 0.01). Application rate of 2.5 t/ha manure recorded the highest yield of 340 kg/ha and 308.1 kg/ha in 2019 and 2020 respectively. Increasing manure rate from 2.5 - 3.5 t/ha did not result in significant increases in dry calyx yield. The four rates differed significantly from the control which had the least calyx yield of 190.3 kg/ha and 180 kg/ha in 2019 and 2020 respectively. Nitrogen rate of 60 kg/ha recorded the highest dry calyx yield of 510.5 kg/ha and 370.4 kg/ha in 2019 and 2020 respectively which were significantly different from calyx yields recorded by other treatments. The trend on partial budget analysis was consistent in both seasons with the highest yielding treatments (2.5 t/ha cowdung manure and 60 kg/ha) recording the highest net benefit while the control (0 kg/ha) ranked last. The application rate of 2.5 t/ha of cowdung and 60 kg/ha of Nitrogen is thus recommended for optimum roselle production and productivity in the study area.Field experiments were carried out on roselle (Hibiscus sabdariffa L) during the 2019 and 2020 cropping seasons at the CSIR-SARI Research Station at Manga in the Upper East Region of Ghana. The aim of the experiment was to study the response of roselle to cowdung, nitrogen fertilizer and their interaction on the growth and yield of roselle. The treatments consisted of factorial combination of five rates of cowdung (0, 1.5, 2.5, 3.5 and 4.5 t/ha) and five levels of nitrogen (0, 20, 40, 60 and 80 kgN/ha) laid out in a randomized complete block design and replicated three times. Data were collected on days to 50% flowering, plant height, number of leaves per plant and dry calyx yield. The results indicated that differences in dry calyx yield due to the manure and nitrogen fertilizer effects were highly significant (P 0.01). Application rate of 2.5 t/ha manure recorded the highest yield of 340 kg/ha and 308.1 kg/ha in 2019 and 2020 respectively. Increasing manure rate from 2.5 - 3.5 t/ha did not result in significant increases in dry calyx yield. The four rates differed significantly from the control which had the least calyx yield of 190.3 kg/ha and 180 kg/ha in 2019 and 2020 respectively. Nitrogen rate of 60 kg/ha recorded the highest dry calyx yield of 510.5 kg/ha and 370.4 kg/ha in 2019 and 2020 respectively which were significantly different from calyx yields recorded by other treatments. The trend on partial budget analysis was consistent in both seasons with the highest yielding treatments (2.5 t/ha cowdung manure and 60 kg/ha) recording the highest net benefit while the control (0 kg/ha) ranked last. The application rate of 2.5 t/ha of cowdung and 60 kg/ha of Nitrogen is thus recommended for optimum roselle production and productivity in the study area.

关 键 词：Calyx Yield “Sobolo” Sepals Cowdung Nitrogen Fertilizer 

分 类 号：R97[医药卫生—药品]