Nutrient deficiencies were observed to be the primary factor affecting pineapple ( Ananas comosus ) plants growth and development in the southern agricultural zone of Cross River State. Fields experiment were conducted to evaluate the relationships existing between mineral nqutrients in the soils and pineapple plants. Thirty - two Soil samples were collected within the experimental plots at the depth of 0-30 cm using a soil auger. Thirty- two pineapple plants of 18 months old were equally collected within the same experimental plots. Randomization method was used for soil and pineapple plants samplings. Samples were labeled and processed for soil and plant laboratory analyses. The parameters analyzed were: Total nitrogen, Available phosphorus, potassium, calcium and magnesium. Their mean concentrations in the soils and pineapple plants were: 0.59 % and 1.22 g kg -1 Total N; 15.53 mg kg -1 and 0.42 g kg -1 Available P and 0.11 cmol kg -1 and 1.3 g kg -1 Potassium. Others means value were 2.86 cmol kg-1 and 0.86 g kg -1 Calcium and 0.75 cmol kg -1 and 0.52 g kg -1 Magnesium respectively. Moreover, the concentrations of other chemical properties in soils were : 0.77 % organic carbon, 4.5 of Soil p H, 0.08 of Exchangeable Sodium and 65.9 cmol Kg -1 base saturation. The results further revealed that total N , K and Mg associated positively but weakly correlated, while Calcium associated positively but strongly correlated .Available Phosphorus associated negatively but strongly correlated between the soils and pineapple plants. The levels of mineral nutrients’ concentration in the soils at the experimental plots were low, which reflected remarkable in the pineapple plants. Inorganic fertilizers such as N. P. K 15:15:15 should be cautiously applied to enhance soil nutrients’ concentration. KEYWORDS : Soils, Pineapple plants, Mineral nutrients, relationship, Correlation.
在克洛斯河州南部农业区，营养缺乏是影响凤梨生长发育的主要因素。通过田间试验研究了凤梨土壤中矿质养分与凤梨植株之间的关系。利用土壤螺旋钻在试验区0 ~ 30 cm深度处采集32个土壤样品。32株18个月大的凤梨在相同的试验田内均匀采集。土壤和菠萝植株取样采用随机化方法。样品被标记和处理，用于土壤和植物实验室分析。分析的参数有:全氮、有效磷、钾、钙、镁。它们在土壤和菠萝植株中的平均浓度分别为0.59%和1.22 g kg -1;15.53 mg kg -1和0.42 g kg -1有效磷和0.11 cmol kg -1和1.3 g kg -1钾。其他平均值分别为2.86 cmol kg-1和0.86 g kg-1钙，0.75 cmol kg-1和0.52 g kg-1镁。土壤中其他化学性质的有机碳含量为0.77%，土壤磷含量为4.5，交换性钠含量为0.08，碱饱和度为65.9 cmol Kg -1。结果进一步表明，全氮、全钾、全镁与菠萝植株呈弱正相关，钙呈强正相关，速效磷呈强负相关。试验田土壤矿质养分浓度偏低，在凤梨植株上反映明显。应谨慎施用N. P. K . 15:15:15等无机肥料，以提高土壤养分浓度。关键词:土壤，菠萝，矿质养分，关系，相关性
{"title":"CORRELATION STUDIES OF MINERAL NUTRIENTS’ CONCENTRATIONS IN SOILS AND PINEAPPLE (ANANAS COMOSUS) PLANTS IN THE SOUTHERN AGRICULTURAL ZONE OF CROSS RIVER STATE","authors":"D. Effiom","doi":"10.4314/gjass.v14i1.7","DOIUrl":"https://doi.org/10.4314/gjass.v14i1.7","url":null,"abstract":"Nutrient deficiencies were observed to be the primary factor affecting pineapple ( Ananas comosus ) plants growth and development in the southern agricultural zone of Cross River State. Fields experiment were conducted to evaluate the relationships existing between mineral nqutrients in the soils and pineapple plants. Thirty - two Soil samples were collected within the experimental plots at the depth of 0-30 cm using a soil auger. Thirty- two pineapple plants of 18 months old were equally collected within the same experimental plots. Randomization method was used for soil and pineapple plants samplings. Samples were labeled and processed for soil and plant laboratory analyses. The parameters analyzed were: Total nitrogen, Available phosphorus, potassium, calcium and magnesium. Their mean concentrations in the soils and pineapple plants were: 0.59 % and 1.22 g kg -1 Total N; 15.53 mg kg -1 and 0.42 g kg -1 Available P and 0.11 cmol kg -1 and 1.3 g kg -1 Potassium. Others means value were 2.86 cmol kg-1 and 0.86 g kg -1 Calcium and 0.75 cmol kg -1 and 0.52 g kg -1 Magnesium respectively. Moreover, the concentrations of other chemical properties in soils were : 0.77 % organic carbon, 4.5 of Soil p H, 0.08 of Exchangeable Sodium and 65.9 cmol Kg -1 base saturation. The results further revealed that total N , K and Mg associated positively but weakly correlated, while Calcium associated positively but strongly correlated .Available Phosphorus associated negatively but strongly correlated between the soils and pineapple plants. The levels of mineral nutrients’ concentration in the soils at the experimental plots were low, which reflected remarkable in the pineapple plants. Inorganic fertilizers such as N. P. K 15:15:15 should be cautiously applied to enhance soil nutrients’ concentration. KEYWORDS : Soils, Pineapple plants, Mineral nutrients, relationship, Correlation.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124948065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study examined the adoption of improved rubber production technologies by farmers in Akwa Ibom State, Nigeria. The specific objectives of the study are to; identify improved rubber production technologies disseminated to farmers, identify methods for disseminating information on improved rubber production technologies, determine levels of adoption of improved rubber production technologies and finally to determine effects of adoption of improved rubber production technologies on income of farmers in the study area. A simple random sampling technique was used in selecting both adopters and non-adopters of improved rubber production technologies in the study area. Primary data generated from the survey were analyzed using descriptive statistics such as percentages, frequencies, averages, paired t-test analysis and grading scale models. The result showed that about 15 different improved technologies were identified by farmers. Extension agents were found to have eight effective methods of disseminating information to farmers. The t-test analysis showed that adoption of improved rubber production technologies increased farmer’s income. It was also revealed that the level of adoption of these technologies in the study area were above average, this calls for concerted effort by both researchers and extension agents to ensure adequate and timely dissemination of technologies that suit the needs and interests of the rubber farmers. KEYWORDS : Adoption, Rubber, Improved Technologies, Akwa Ibom State.
{"title":"Adoption of Improved Rubber Production Technologies By Farmers In Akwa Ibom State, Nigeria","authors":"J. Effiong, G. Effiong","doi":"10.4314/GJASS.V14I1.5","DOIUrl":"https://doi.org/10.4314/GJASS.V14I1.5","url":null,"abstract":"This study examined the adoption of improved rubber production technologies by farmers in Akwa Ibom State, Nigeria. The specific objectives of the study are to; identify improved rubber production technologies disseminated to farmers, identify methods for disseminating information on improved rubber production technologies, determine levels of adoption of improved rubber production technologies and finally to determine effects of adoption of improved rubber production technologies on income of farmers in the study area. A simple random sampling technique was used in selecting both adopters and non-adopters of improved rubber production technologies in the study area. Primary data generated from the survey were analyzed using descriptive statistics such as percentages, frequencies, averages, paired t-test analysis and grading scale models. The result showed that about 15 different improved technologies were identified by farmers. Extension agents were found to have eight effective methods of disseminating information to farmers. The t-test analysis showed that adoption of improved rubber production technologies increased farmer’s income. It was also revealed that the level of adoption of these technologies in the study area were above average, this calls for concerted effort by both researchers and extension agents to ensure adequate and timely dissemination of technologies that suit the needs and interests of the rubber farmers. KEYWORDS : Adoption, Rubber, Improved Technologies, Akwa Ibom State.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123288699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Studies on parasites of crayfish and lobsters as indicators of metal pollution in Great Kwa River, Nigeria was evaluated using appropriate instruments for determination of Physicochemical parameters and detection of metals. Formol ether centrifugation method was used for isolation of parasites. A total of 150 crayfish and lobsters were analyzed for metals and tested for parasites. All samples of crayfish (100%) and 136 (90.66%) lobsters were positive with parasites. The distribution of parasitic infection in crayfish from the 5 sampling zones showed Paragonfmus uterobilateralis prevalence 6.0%, 8.7%, 15.3%, and 10.0% from zones 1-4 respectively and crayfish leech prevalence of 10.3%, 16.0% and 20.0% from zones 3-5 respectively. The distribution of parasites in Lobsters showed Polymorphus botulus , 3.3%, 6.0%, 3.6%, and 8.7% prevalence from zones 1-4 respectively. Nicothoic astaci , prevalence was 2.0%, 15.3% and 5.0% from zones 2-4 respectively. Prevalence of Hysterothylacium sp of 2.0% was observed in zone 3 while that of Porospora gigantic was 3.7% in zone 5. Parasite intensity ranged from 2 to 6. Metals detected included Lead (Pb). Copper (Cu), Iron (Fe), Cadmium (Cd), Asenium (As) and Zinc (Zn) with Iron being the commonest. Some parasites with high prevalence in zones where certain metals had high concentration were detected. These parasites can be used as indicators of pollution in the study area. KEYWORDS : Physicochemical, detected, pollution, concentration, indicator and prevalence.
{"title":"Parasites of crayfish ( P. clarki ) and lobsters ( Macrobrachium vollenhovenic ) as indicators of metallic pollution in great, Kwa river, Nigeria","authors":"J. T. Abraham, G. Oloko, E. Ikpeme","doi":"10.4314/gjass.v14i1.4","DOIUrl":"https://doi.org/10.4314/gjass.v14i1.4","url":null,"abstract":"Studies on parasites of crayfish and lobsters as indicators of metal pollution in Great Kwa River, Nigeria was evaluated using appropriate instruments for determination of Physicochemical parameters and detection of metals. Formol ether centrifugation method was used for isolation of parasites. A total of 150 crayfish and lobsters were analyzed for metals and tested for parasites. All samples of crayfish (100%) and 136 (90.66%) lobsters were positive with parasites. The distribution of parasitic infection in crayfish from the 5 sampling zones showed Paragonfmus uterobilateralis prevalence 6.0%, 8.7%, 15.3%, and 10.0% from zones 1-4 respectively and crayfish leech prevalence of 10.3%, 16.0% and 20.0% from zones 3-5 respectively. The distribution of parasites in Lobsters showed Polymorphus botulus , 3.3%, 6.0%, 3.6%, and 8.7% prevalence from zones 1-4 respectively. Nicothoic astaci , prevalence was 2.0%, 15.3% and 5.0% from zones 2-4 respectively. Prevalence of Hysterothylacium sp of 2.0% was observed in zone 3 while that of Porospora gigantic was 3.7% in zone 5. Parasite intensity ranged from 2 to 6. Metals detected included Lead (Pb). Copper (Cu), Iron (Fe), Cadmium (Cd), Asenium (As) and Zinc (Zn) with Iron being the commonest. Some parasites with high prevalence in zones where certain metals had high concentration were detected. These parasites can be used as indicators of pollution in the study area. KEYWORDS : Physicochemical, detected, pollution, concentration, indicator and prevalence.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114645751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Efficient allocation of resources has been a problem in small holder farm economy in Nigeria. The study analyzes cost efficiency in food crop production among small-scale farmers in Adamawa State, Nigeria. Specifically, the socioeconomic characteristics of food crop farmers in the study area were described, their various cropping systems identified and the cost efficiency indices of the farmers determined. Data were collected from 360 randomly selected food crop farmers in eight local government areas spread across the four ADP zones of the State using structured questionnaires. The analytical tools were descriptive statistics involving the use of frequency tables and inferential statistics involving the use of stochastic frontier cost function. The result revealed that married female farmers constituted majority (57.22%) of the respondents. Their literacy level was high, as 84% of them had some form of formal education. The respondents cultivated an average of about two hectares of farm land using personal savings. Eleven cropping systems were identified with mixed cropping accounting for about 53% of the cropping systems and about 54% of the total hectarage allocations. The maximum likelihood estimates of the stochastic cost function revealed that the explanatory variables; extension contact, crop diversification and credit availability were significantly and positively related to cost efficiency in the study area. The cost efficiency index ranged from 0.18-0.98, with a mean of 0.84 implying that an average farm in the study area has the scope for increasing cost efficiency by 16% given the existing technology. The study recommended farmers education on fundamental farm management skills to enable farmers plan, evaluate and appraise their farm business activities among others. KEYWORDS : Cost efficiency, Cropping systems, Small-scale food crop farmers, Adamawa State, Nigeria
{"title":"ANALYSIS OF COST EFFICIENCY IN FOOD CROP PRODUCTION AMONG SMALL-SCALE FARMERS IN ADAMAWA STATE, NIGERIA","authors":"D. Maurice, Y. Adamu, M. Joseph","doi":"10.4314/GJASS.V14I1.3","DOIUrl":"https://doi.org/10.4314/GJASS.V14I1.3","url":null,"abstract":"Efficient allocation of resources has been a problem in small holder farm economy in Nigeria. The study analyzes cost efficiency in food crop production among small-scale farmers in Adamawa State, Nigeria. Specifically, the socioeconomic characteristics of food crop farmers in the study area were described, their various cropping systems identified and the cost efficiency indices of the farmers determined. Data were collected from 360 randomly selected food crop farmers in eight local government areas spread across the four ADP zones of the State using structured questionnaires. The analytical tools were descriptive statistics involving the use of frequency tables and inferential statistics involving the use of stochastic frontier cost function. The result revealed that married female farmers constituted majority (57.22%) of the respondents. Their literacy level was high, as 84% of them had some form of formal education. The respondents cultivated an average of about two hectares of farm land using personal savings. Eleven cropping systems were identified with mixed cropping accounting for about 53% of the cropping systems and about 54% of the total hectarage allocations. The maximum likelihood estimates of the stochastic cost function revealed that the explanatory variables; extension contact, crop diversification and credit availability were significantly and positively related to cost efficiency in the study area. The cost efficiency index ranged from 0.18-0.98, with a mean of 0.84 implying that an average farm in the study area has the scope for increasing cost efficiency by 16% given the existing technology. The study recommended farmers education on fundamental farm management skills to enable farmers plan, evaluate and appraise their farm business activities among others. KEYWORDS : Cost efficiency, Cropping systems, Small-scale food crop farmers, Adamawa State, Nigeria","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131228173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The study was designed to evaluate the performance of pullet chicks fed graded levels of processed horse eye bean meal (HEBM) as partial replacement for soybean meal. The cracked beans were subjected to three processing methods viz: soaking in plain water for 48 hours, cooking for 90 minutes, and toasting on open fire at 100 o C after sundrying. The processed beans were milled to pass through a four mm mesh and used for diet formulation. Six experimental diets were formulated each at brooding and rearing phase, with diet 1 as control, while soybean meal in the control diets were replaced with the horse eye bean meal (HEBM) at 15, 30, 45, 60 and 75% in diets 2, 3, 4, 5, and 6, respectively. Three hundred and sixty (360) day-old Lohman black pullet chicks were used at brooding phase, while two hundred and seventy (270), 56 day – old chicks were used during the rearing phase of the experiment. Chicks were divided into six (6) groups on weight equalization bases and groups randomly placed on one of the six diets. The feeding trials lasted for eight weeks at brooding stage and twelve weeks during rearing period. Data generated were statistically analysed using analyses of variance procedures. The results revealed that level of HEBM in the diet did not significantly influenced the average daily feed intake, average daily weight gain and feed conversion ratio. Cost of feed consumed and cost per kg weight gain were significantly reduced with the inclusion of HEBM in pullet chicks’ diets. It was concluded that 45 per cent of the soybean meal could be replaced by the HEBM in diets of pullets at the chick phase while HEBM can replace 60% of the soybean meal in the pullets’ diet at rearing phase. KEYWORDS : Horse eye bean, anti-nutrients, processing techniques, pullet chicks, brooding and rearing phase.
{"title":"Feeding value of processed horse eye bean meal as alternative protein source in pullet chicks diets","authors":"O. Effiong, E. Ekpe, M. Nkang","doi":"10.4314/gjass.v14i1.2","DOIUrl":"https://doi.org/10.4314/gjass.v14i1.2","url":null,"abstract":"The study was designed to evaluate the performance of pullet chicks fed graded levels of processed horse eye bean meal (HEBM) as partial replacement for soybean meal. The cracked beans were subjected to three processing methods viz: soaking in plain water for 48 hours, cooking for 90 minutes, and toasting on open fire at 100 o C after sundrying. The processed beans were milled to pass through a four mm mesh and used for diet formulation. Six experimental diets were formulated each at brooding and rearing phase, with diet 1 as control, while soybean meal in the control diets were replaced with the horse eye bean meal (HEBM) at 15, 30, 45, 60 and 75% in diets 2, 3, 4, 5, and 6, respectively. Three hundred and sixty (360) day-old Lohman black pullet chicks were used at brooding phase, while two hundred and seventy (270), 56 day – old chicks were used during the rearing phase of the experiment. Chicks were divided into six (6) groups on weight equalization bases and groups randomly placed on one of the six diets. The feeding trials lasted for eight weeks at brooding stage and twelve weeks during rearing period. Data generated were statistically analysed using analyses of variance procedures. The results revealed that level of HEBM in the diet did not significantly influenced the average daily feed intake, average daily weight gain and feed conversion ratio. Cost of feed consumed and cost per kg weight gain were significantly reduced with the inclusion of HEBM in pullet chicks’ diets. It was concluded that 45 per cent of the soybean meal could be replaced by the HEBM in diets of pullets at the chick phase while HEBM can replace 60% of the soybean meal in the pullets’ diet at rearing phase. KEYWORDS : Horse eye bean, anti-nutrients, processing techniques, pullet chicks, brooding and rearing phase.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An experiment was carried out between October 2007 and March 2008 at the permanent site of the University of Jos (08°53'E, 09°57'N; 1,159 m above mean sea level) to investigate the effect of day length extension on the yield of onion bulb (Allium cepa L. ). Two varieties of onion ('Violet de Galmi' and 'Red Creole') were combined with normal, additional 2, 4 and 6 hours after darkness in a completely randomized design with four replications. The results showed that the mean weight of bulb, size of bulb, diameter of bulb, length of bulb and the mean number of rings per bulb increased with increasing day length extension, ranging from 119.74 g to 223.23 g; 15.39 cm - 25.04 cm; 5.69 cm - 8.60 cm; 4.31 cm - 5.76 cm and 6.13 - 10.25 rings respectively. The variety ''Violet de Galmi'' exceeded the variety ''Red Creole'' in all parameters except the mean bulb length, where it was 4.97 cm as against 5.03 cm in the variety ''Red Creole''. There was significant day length extension and variety interaction on the mean bulb-weight, bulb-size, bulb-diameter, bulb-length and the number of rings per bulb. The variety ''Red Creole'' was observed to be more affected by longer day length extension than the variety ''Violet de Galmi'' in the Jos-Plateau environment. The overall results indicate, however, that the variety ''Violet de Galmi'' might be more suited to the Jos-Plateau environment than the variety ''Red Creole'' in terms of the yield of onion bulb. KEYWORDS : Day length extension, Allium cepa L., Bulb yield
{"title":"RESPONSE OF ONION (Allium cepa L.) BULB YIELD TO DAY LENGTH EXTENSION","authors":"Susinya Habila, O. Namo","doi":"10.4314/GJASS.V13I1.5","DOIUrl":"https://doi.org/10.4314/GJASS.V13I1.5","url":null,"abstract":"An experiment was carried out between October 2007 and March 2008 at the permanent site of the University of Jos (08°53'E, 09°57'N; 1,159 m above mean sea level) to investigate the effect of day length extension on the yield of onion bulb (Allium cepa L. ). Two varieties of onion ('Violet de Galmi' and 'Red Creole') were combined with normal, additional 2, 4 and 6 hours after darkness in a completely randomized design with four replications. The results showed that the mean weight of bulb, size of bulb, diameter of bulb, length of bulb and the mean number of rings per bulb increased with increasing day length extension, ranging from 119.74 g to 223.23 g; 15.39 cm - 25.04 cm; 5.69 cm - 8.60 cm; 4.31 cm - 5.76 cm and 6.13 - 10.25 rings respectively. The variety ''Violet de Galmi'' exceeded the variety ''Red Creole'' in all parameters except the mean bulb length, where it was 4.97 cm as against 5.03 cm in the variety ''Red Creole''. There was significant day length extension and variety interaction on the mean bulb-weight, bulb-size, bulb-diameter, bulb-length and the number of rings per bulb. The variety ''Red Creole'' was observed to be more affected by longer day length extension than the variety ''Violet de Galmi'' in the Jos-Plateau environment. The overall results indicate, however, that the variety ''Violet de Galmi'' might be more suited to the Jos-Plateau environment than the variety ''Red Creole'' in terms of the yield of onion bulb. KEYWORDS : Day length extension, Allium cepa L., Bulb yield","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133058693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yams are cultivated in diverse agroecologies and there is evidence of strong genotype and environment interaction. This has necessitated the evaluation of new yam genotypes in multi-locational trials. Five new white yam genotypes were evaluated in different locations of major yam producing areas; Umudike, Nsukka, Ubiaja, Abuja and Katsina-Ala, to test the performance and stability of these genotypes across the environments using GGE bi-plot software. The GGE bi-plot generated several graphic bi-plots which showed Umudike, Nsukka, Ubiaja and Katsina-Ala as belonging to one mega – environment while Abuja and Ubiaja belong to another. The GGE bi-plot also showed the discriminating and non-discriminating environments. Katsina-Ala was the most discriminating environment while Nsukka was the least. A test environment that lacks discriminating ability lacks the capacity to provide information about the genotype being used. Such environment lacks usefulness and should be discarded as a test environment. Katsina-Ala, with the longest vector is the most discriminating. This is followed by Ubiaja, Umudike and Abuja in that order. Nsukka is the least discriminating. KEYWORDS : Yams, multi-environment trial. GGE biplot, mega-enviroments.
{"title":"Multilocational Evaluation of White Yam Genotypes Using Gge Bi-Plot Methodology","authors":"E. Nwachukwu","doi":"10.4314/GJASS.V13I1.2","DOIUrl":"https://doi.org/10.4314/GJASS.V13I1.2","url":null,"abstract":"Yams are cultivated in diverse agroecologies and there is evidence of strong genotype and environment interaction. This has necessitated the evaluation of new yam genotypes in multi-locational trials. Five new white yam genotypes were evaluated in different locations of major yam producing areas; Umudike, Nsukka, Ubiaja, Abuja and Katsina-Ala, to test the performance and stability of these genotypes across the environments using GGE bi-plot software. The GGE bi-plot generated several graphic bi-plots which showed Umudike, Nsukka, Ubiaja and Katsina-Ala as belonging to one mega – environment while Abuja and Ubiaja belong to another. The GGE bi-plot also showed the discriminating and non-discriminating environments. Katsina-Ala was the most discriminating environment while Nsukka was the least. A test environment that lacks discriminating ability lacks the capacity to provide information about the genotype being used. Such environment lacks usefulness and should be discarded as a test environment. Katsina-Ala, with the longest vector is the most discriminating. This is followed by Ubiaja, Umudike and Abuja in that order. Nsukka is the least discriminating. KEYWORDS : Yams, multi-environment trial. GGE biplot, mega-enviroments.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121450828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oban Hills is located at Akamkpa in the Southern Senatorial District of Cross River, State, Nigeria. Phosphorus (P)-rich soil from the Hills is expected to have an effect on retention and distribution in the highly acidic soils surrounding the area inundated for several years. Phosphorus forms in the soils of the Hills varied with the year of deposition with the highest fraction being Ca-P. The low soil pH in the Oban Hills soils suggests that Ca-P may exist in a partially dissolved form and will be the primary source of P for vegetations around the area. The cation exchange capacity and pH of surface material from the Hills suggest a dominance of primary minerals. Based on the amount of P available it seems that the Hills soils play a role in the overall P availability to the surrounding vegetation. A significant (P
{"title":"Phosphorus forms in soils of Oban Hills, Akamkpa, Cross River State, Nigeria","authors":"W. Ubi, M. Ubi, Otu Ibor, A. U. Akpanidiok","doi":"10.4314/gjass.v13i1.4","DOIUrl":"https://doi.org/10.4314/gjass.v13i1.4","url":null,"abstract":"Oban Hills is located at Akamkpa in the Southern Senatorial District of Cross River, State, Nigeria. Phosphorus (P)-rich soil from the Hills is expected to have an effect on retention and distribution in the highly acidic soils surrounding the area inundated for several years. Phosphorus forms in the soils of the Hills varied with the year of deposition with the highest fraction being Ca-P. The low soil pH in the Oban Hills soils suggests that Ca-P may exist in a partially dissolved form and will be the primary source of P for vegetations around the area. The cation exchange capacity and pH of surface material from the Hills suggest a dominance of primary minerals. Based on the amount of P available it seems that the Hills soils play a role in the overall P availability to the surrounding vegetation. A significant (P<O.05) decrease in HCI soluble P with depth was observed in the OB2 soil site, where the greatest amount of HCI-soluble P was found in the 0-15cm soil depth. The bicarbonate P varied with sites (OBI, OB2 and 0B3), and depth, but the OB3 had the highest value. KEYWORDS : Phosphorus, Soils, Oban Hills, P-fixation, P-distribution","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130714825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One hundred and fifty (150) Day old Anak cockerel chicks were used in this study, to evaluate the effect of feeding Sorghum Offal (SO) in the bird's performance, nutrient utilization and carcass characteristics. They were distributed into five dietary treatments, with varied levels of weight for weight replacement (2, 3, 4, and 5 contained 15, 35, 55 and 75 % sorghum offal in place of sorghum meal) respectively. While treatment 1 with zero replacement serving as control. The response of the birds, in terms of feed intake weight gained, feed conversion efficiency, and apparent nutrient digestibility and retention were determined. The organ weights and weight of cut parts were also recorded. The result showed that weight of organs such as spleen, heart, liver, kidney and proventriculus increased significantly across the row. The study indicated that the substitution of sorghum offal for sorghum meal at levels up to 35 % can be tolerated by cockerel chicks. KEYWORDS : Nutrient utilization, digestibility, Sorghum offal, carcass characteristics, performance, response.
{"title":"Genetic response of growing cockerels to sorghum offal substitute for sorghum meal in a research environment","authors":"J. Kperegbeyi, C. Otoikhian","doi":"10.4314/GJASS.V13I1.6","DOIUrl":"https://doi.org/10.4314/GJASS.V13I1.6","url":null,"abstract":"One hundred and fifty (150) Day old Anak cockerel chicks were used in this study, to evaluate the effect of feeding Sorghum Offal (SO) in the bird's performance, nutrient utilization and carcass characteristics. They were distributed into five dietary treatments, with varied levels of weight for weight replacement (2, 3, 4, and 5 contained 15, 35, 55 and 75 % sorghum offal in place of sorghum meal) respectively. While treatment 1 with zero replacement serving as control. The response of the birds, in terms of feed intake weight gained, feed conversion efficiency, and apparent nutrient digestibility and retention were determined. The organ weights and weight of cut parts were also recorded. The result showed that weight of organs such as spleen, heart, liver, kidney and proventriculus increased significantly across the row. The study indicated that the substitution of sorghum offal for sorghum meal at levels up to 35 % can be tolerated by cockerel chicks. KEYWORDS : Nutrient utilization, digestibility, Sorghum offal, carcass characteristics, performance, response.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114188122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two experiments were carried out in 2008 and 2009, in four locations in Cross State, to determine seasonal variations in the commonly grown rice varieties. Their response to different photoperiod treatments were investigated with rice plants in polyethylene bags subjected to varying lengths under artificial light. High photoperiod - sensitive varieties, showed significant difference in their maturation periods when planted at different times of the year. The longer growth duration occurred when plantings were made in January - February. The shortest growth duration occurred when plantings were made in the October - November period. In some of the photoperiod - sensitive varieties, there were big differences in the growth duration when planted in the same month, of different years. These varieties would be unsuitable for planting during the off season (August to September). The results are discussed in light of photoperiod sensitivity of some rice varieties planted at different times of the year. KEYWORDS : Seasonal variation, growth duration of rice.
{"title":"SEASONAL VARIATIONS IN THE GROWTH DURATION OF SOME RICE VARIETIES GROWN IN CROSS RIVER STATE","authors":"W. Ubi, M. Ubi, Otu Ibor, A. U. Akpanidiok","doi":"10.4314/GJASS.V13I1.1","DOIUrl":"https://doi.org/10.4314/GJASS.V13I1.1","url":null,"abstract":"Two experiments were carried out in 2008 and 2009, in four locations in Cross State, to determine seasonal variations in the commonly grown rice varieties. Their response to different photoperiod treatments were investigated with rice plants in polyethylene bags subjected to varying lengths under artificial light. High photoperiod - sensitive varieties, showed significant difference in their maturation periods when planted at different times of the year. The longer growth duration occurred when plantings were made in January - February. The shortest growth duration occurred when plantings were made in the October - November period. In some of the photoperiod - sensitive varieties, there were big differences in the growth duration when planted in the same month, of different years. These varieties would be unsuitable for planting during the off season (August to September). The results are discussed in light of photoperiod sensitivity of some rice varieties planted at different times of the year. KEYWORDS : Seasonal variation, growth duration of rice.","PeriodicalId":250072,"journal":{"name":"Global Journal of Agricultural Sciences","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121081374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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