Tag Archives: Turmeric

Growth, Yield and Quality of Turmeric (Curcuma Longa Linn.) As Influenced By Nitrogen Fertilizer Rates and Nitrogen Split Application in Obubra, South-South Nigeria (Published)

Most of southern parts of Nigeria normally receives high annual rainfall. Even under best management practices, approximately 30-50% of applied nitrogen is lost through leaching thereby making it unavailable during the critical stages of crop growth. The objective of this research was to investigate the optimum rates of Nitrogen fertilizer and Nitrogen split application that will support maximum growth, yield and quality of turmeric. Field experiments were conducted in 2016 and 2017 in the research farm of Cross River University of Technology, Obubra. Treatments consisted of five Nitrogen rates (0, 50, 100, 150 and 200 kg N ha-1) and five Nitrogen split applications (Sp1; Sp2; Sp3; Sp4 and Sp5)). The experiment was laid out in split plot design with three replicates. Growth and yield attributes were significantly (P<0.05) affected by Nitrogen rates and Nitrogen split application. The fresh and dry rhizome yield, oleoresin content and essential oil content were highest at 200 kg N ha-1and 150 kg N ha-1 in three equal split application (SP3) in both years.

Keywords: Turmeric, nitrogen fertilizer rate, rhizome yield., split application

Growth, Yield and Quality of Turmeric (Curcuma Longa Linn.) As Influenced By Nitrogen Fertilizer Rates and Nitrogen Split Application in Obubra, South-South Nigeria (Published)

Most of southern parts of Nigeria normally receives high annual rainfall. Even under best management practices, approximately 30-50% of applied nitrogen is lost through leaching thereby making it unavailable during the critical stages of crop growth. The objective of this research was to investigate the optimum rates of Nitrogen fertilizer and Nitrogen split application that will support maximum growth, yield and quality of turmeric. Field experiments were conducted in 2016 and 2017 in the research farm of Cross River University of Technology, Obubra. Treatments consisted of five Nitrogen rates (0, 50, 100, 150 and 200 kg N ha-1) and five Nitrogen split applications (Sp1; Sp2; Sp3; Sp4 and Sp5)). The experiment was laid out in split plot design with three replicates. Growth and yield attributes were significantly (P<0.05) affected by Nitrogen rates and Nitrogen split application. The fresh and dry rhizome yield, oleoresin content and essential oil content were highest at 200 kg N ha-1and 150 kg N ha-1 in three equal split application (SP3) in both years.

Keywords: Turmeric, nitrogen fertilizer rate, rhizome yield., split application

Implication of Renal Based Mechanism for Anti-Ultraviolet Ray Response to Organic Turmeric Supplement in Rabbits (Published)

Recent investigations failed to establish hepatic system as primary mechanistic locus for anti-UV effects of organic turmeric (T) in rabbits. Current effort, sought possible implication of renal mechanisms. Study was for 85days (d) in three phased periods: 40d pre-irradiation, 5d irradiation and 40d post-irradiation in 48 acclimatized rabbits randomly assigned to 4 groups of 12 each, fed unsupplemented diet and forage (Tridax procumbens) – basal diet (BD) and BD supplemented with 2% pulverized crude T. Feed and water were available ad libitum. Blood was collected on 86d from 0900h for measurement of renal parameters. Plasma (p) concentrations ( [ ]p ) of electrolytes were determined by flame photometry; urea, creatinine (CR) and HCO3- by standard titrimetric/colorimetric methods. Data were analyzed by ANOVA. [Na+]p and [HCO3-]p in Control and T groups were statistically similar (p>0.05). UV moderated [Na+]p, [HCO3-]p and [Urea]p at 70% of control value (%C) and elevated [CR]p – %C 140, 100, 100: R, P, T groups respectively (p<0.05). T improved [K+]p and revised suppressed [Urea]p at %C 70, 80, 90: R, P, T groups respectively (p<0.05). These results strongly implicate renal system as a primary mechanistic locus.

Keywords: Prophylaxis, Rabbits, Renal-mechanism, Turmeric, Ultraviolet radiation

Comparing Therapeutic and Prophylactic Moderation of Perturbation of Erythrocytic and Platelet Functions in Ultraviolet Irradiated Rabbits Fed 2% Turmeric Supplement (Published)

Recent moderation of lympho-leukocyctic responses of acutely ultraviolet (UV) irradiated pre-pubertal rabbits (PR) by 2% organic turmeric (Curcuma longa) supplement raises the possibility of wider protective implications for other blood components. This study thus investigated UV effects on erythrocytic/hematologic indices (EHI) and platelet (PLT) functions in PR and compares acute and chronic effects of T thereon. The study was for 85days (d) in three (3) phased periods: 40d pre-irradiation, 5d irradiation and 40d post-irradiation in 60 acclimatized unsexed PR randomly assigned to 4 groups of 12 PR each as follows: Group 1, Control was fed un-supplemented diet and forage (Tridax procumbens) – basal diet (BD) for the entire study period without any treatment. Group 2 – T group (T+T+T) was fed BD supplemented with 2% pulverized crude T (BDS) during periods 1, 2 and 3, without irradiation. Group 3 – radiation (R) group (- +R+ -) was fed BD at periods 1, 2 and 3 and irradiated. Group 4 – therapeutic (H) group (- + R+T) was treated as in group 3 and fed BDS at period 3 only. Group 5 – prophylactic (P) group (T+TR+ -) was fed BDS during periods 1 and 2 only and irradiated. Feed and water were available ad libitum. Blood was collected on 86d from 0900h. Data were analyzed by ANOVA. UV significantly (p<0.05) suppressed RBC count, hemoglobin concentration and hematocrit as well as platelet function. BDS normalized these variables towards control values. H application of T significantly (p<0.05) elevated the variables to control values. A P application of T very significantly (p<0.05) elevated values of these variables relative to acutely treated PR. These results demonstrate that T whether applied acutely or chronically moderated, UV induced perturbation of EHI and PLT functions of these PR.

Keywords: Erythrocytic-Platelet-function, Rabbits, Therapy-Prophylaxis, Turmeric, Ultraviolet radiation