This study investigated and ascertained causes of health disorders in stored yam at farm gate in major yam producing communities in the Nanumba North District of Ghana. A mixed method research design was adopted for d...This study investigated and ascertained causes of health disorders in stored yam at farm gate in major yam producing communities in the Nanumba North District of Ghana. A mixed method research design was adopted for data collection through the application of Participatory Research Appraisal tools and techniques including individual interviews using questionnaires. Random sampling technique was used to select five communities and hundred respondents. Data was analyzed via descriptive statistics which generated summaries, Tables, histograms, and pie-charts using SAS software. Ages of respondents were in the range of 11 to over 60 years with illiterate majority. They were inadequate in their knowledge of agronomic, harvest, and postharvest practices and techniques including curing, chemical or botanical treatments for the yam tuber prior to storage. Fresh yam produce was kept in shallow dug trenches where temporal storage was the target but stored their dry yam produce intended for long periods in barns (most preferred) and on wooden platforms which were more sustainable with a little preponderance of the former. Causes of yam health disorders and associated problems in store were insect pests, rodents, weed pests, diseases (tuber rot), yam beetles, snakes, scorpions, and the inability of some storage structures to keep produce for a long time. Research, government, and other stakeholder institutions should partner up and make improved and certified yam sets accessible and affordable, and intensify agriculture extension services’ interventions that empower farmers the knowledge on agronomic, harvest, and postharvest practices and techniques.展开更多
Haden, Kent, Palmer, and Keitt mango varieties were studied to establish the relationship of harvest time to 1) seasonal accumulated day-degrees or heat units (<span style="white-space:nowrap;">...Haden, Kent, Palmer, and Keitt mango varieties were studied to establish the relationship of harvest time to 1) seasonal accumulated day-degrees or heat units (<span style="white-space:nowrap;">˚</span>C), 2) daily rainfall amount (mm), and 3) physical fruit development attributes in order to fix maturity standards for export and local markets. Randomized Complete Block Design with four replications was used. In each case of Haden, Kent, Palmer, and Keitt varieties, physical fruit development attributes established as standard harvest maturity values were: weight (640 g, 836 g, 837 g, and 1104 g, respectively), length (16.31 cm, 16.19 cm, 21.22 cm, and 19 cm, respectively), width (30.97 cm, 33.47 cm, 30.86 cm, and 35.91 cm, respectively), volume (598 cm<sup>3</sup>, 807 cm<sup>3</sup>, 772 cm<sup>3</sup>, and 959 cm<sup>3</sup>, respectively), density (1.147 g/cm<sup>3</sup>, 1.076 g/cm<sup>3</sup>, 1.084 g/cm<sup>3</sup>, and 1.189 g/cm<sup>3</sup>, respectively), and indentation (0.25 cm, 0.49 cm, and 0.50 cm, respectively). The intensity of grooves around the stylar-scar end of Palmer fruits was studied and used as maturity index. Index values of 0.075 mls, 0.150 mls, 0.425 mls, and 0.116 mls, respectively, for Haden, Kent, Palmer, and Keitt varieties were recorded as latex exuded at harvest since these values tallied with the other physical harvest maturity index values, and also with those of rain fall and temperature values. Temperature, rainfall, and physical characteristics are therefore important non-destructive criteria for fixing maturity index values for mango fruits.展开更多
文摘This study investigated and ascertained causes of health disorders in stored yam at farm gate in major yam producing communities in the Nanumba North District of Ghana. A mixed method research design was adopted for data collection through the application of Participatory Research Appraisal tools and techniques including individual interviews using questionnaires. Random sampling technique was used to select five communities and hundred respondents. Data was analyzed via descriptive statistics which generated summaries, Tables, histograms, and pie-charts using SAS software. Ages of respondents were in the range of 11 to over 60 years with illiterate majority. They were inadequate in their knowledge of agronomic, harvest, and postharvest practices and techniques including curing, chemical or botanical treatments for the yam tuber prior to storage. Fresh yam produce was kept in shallow dug trenches where temporal storage was the target but stored their dry yam produce intended for long periods in barns (most preferred) and on wooden platforms which were more sustainable with a little preponderance of the former. Causes of yam health disorders and associated problems in store were insect pests, rodents, weed pests, diseases (tuber rot), yam beetles, snakes, scorpions, and the inability of some storage structures to keep produce for a long time. Research, government, and other stakeholder institutions should partner up and make improved and certified yam sets accessible and affordable, and intensify agriculture extension services’ interventions that empower farmers the knowledge on agronomic, harvest, and postharvest practices and techniques.
文摘Haden, Kent, Palmer, and Keitt mango varieties were studied to establish the relationship of harvest time to 1) seasonal accumulated day-degrees or heat units (<span style="white-space:nowrap;">˚</span>C), 2) daily rainfall amount (mm), and 3) physical fruit development attributes in order to fix maturity standards for export and local markets. Randomized Complete Block Design with four replications was used. In each case of Haden, Kent, Palmer, and Keitt varieties, physical fruit development attributes established as standard harvest maturity values were: weight (640 g, 836 g, 837 g, and 1104 g, respectively), length (16.31 cm, 16.19 cm, 21.22 cm, and 19 cm, respectively), width (30.97 cm, 33.47 cm, 30.86 cm, and 35.91 cm, respectively), volume (598 cm<sup>3</sup>, 807 cm<sup>3</sup>, 772 cm<sup>3</sup>, and 959 cm<sup>3</sup>, respectively), density (1.147 g/cm<sup>3</sup>, 1.076 g/cm<sup>3</sup>, 1.084 g/cm<sup>3</sup>, and 1.189 g/cm<sup>3</sup>, respectively), and indentation (0.25 cm, 0.49 cm, and 0.50 cm, respectively). The intensity of grooves around the stylar-scar end of Palmer fruits was studied and used as maturity index. Index values of 0.075 mls, 0.150 mls, 0.425 mls, and 0.116 mls, respectively, for Haden, Kent, Palmer, and Keitt varieties were recorded as latex exuded at harvest since these values tallied with the other physical harvest maturity index values, and also with those of rain fall and temperature values. Temperature, rainfall, and physical characteristics are therefore important non-destructive criteria for fixing maturity index values for mango fruits.
