EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM
Field experiments were carried out to evaluate the effects of nitrogen fertilizer sources on quality and mineral nutrient composition of white yam (Dioscorea rotundata). Three rates of nitrogen; 0, 80 and 160 kg N/ha were applied in the forms of ammonium sulphate (AS) calcium ammonium nitrate (CAN)...
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The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.
2020
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| Accesso online: | https://ija.oauife.edu.ng/index.php/ija/article/view/440 |
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| author | OKPON , S. N. ADUAYI, E. A. |
| author_facet | OKPON , S. N. ADUAYI, E. A. |
| author_sort | OKPON , S. N. |
| collection | OJS |
| description | Field experiments were carried out to evaluate the effects of nitrogen fertilizer sources on quality and mineral nutrient composition of white yam (Dioscorea rotundata).
Three rates of nitrogen; 0, 80 and 160 kg N/ha were applied in the forms of ammonium sulphate (AS) calcium ammonium nitrate (CAN) and urea for two yam growing seasons. Soil acidity was increased with increasing application of AS followed by urea, whereas CAN application resulted in higher pH. The application of urea and CAN at 160 kg N/ha increased -N whereas AS decreased N, P and K in the leaves. A highly positive significant correlation was established between leaf -N and starch and glucose content of the yam tuber. In general, AS fertilization produced the highest fresh tuber yield, percent starch and glucose while CAN produced the lowest yield, percent starch and glucose |
| format | Online |
| id | oai:ojs2.ija.oauife.edu.ng:article-440 |
| institution | My University |
| language | eng |
| publishDate | 2020 |
| publisher | The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. |
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| spelling | oai:ojs2.ija.oauife.edu.ng:article-4402020-09-07T14:51:00Z EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM OKPON , S. N. ADUAYI, E. A. Nitrogen fertilizer, white yam, soil acidity Field experiments were carried out to evaluate the effects of nitrogen fertilizer sources on quality and mineral nutrient composition of white yam (Dioscorea rotundata). Three rates of nitrogen; 0, 80 and 160 kg N/ha were applied in the forms of ammonium sulphate (AS) calcium ammonium nitrate (CAN) and urea for two yam growing seasons. Soil acidity was increased with increasing application of AS followed by urea, whereas CAN application resulted in higher pH. The application of urea and CAN at 160 kg N/ha increased -N whereas AS decreased N, P and K in the leaves. A highly positive significant correlation was established between leaf -N and starch and glucose content of the yam tuber. In general, AS fertilization produced the highest fresh tuber yield, percent starch and glucose while CAN produced the lowest yield, percent starch and glucose The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria. 2020-09-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article application/pdf https://ija.oauife.edu.ng/index.php/ija/article/view/440 Ife Journal of Agriculture; Vol. 10 No. 1 (1988): Ife Journal of Agriculture; 20-28 0331-6351 eng https://ija.oauife.edu.ng/index.php/ija/article/view/440/324 Copyright (c) 2020 Ife Journal of Agriculture |
| spellingShingle | Nitrogen fertilizer, white yam, soil acidity OKPON , S. N. ADUAYI, E. A. EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title | EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title_full | EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title_fullStr | EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title_full_unstemmed | EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title_short | EFFECT OF NITROGEN FERTILIZER SOURCES ON THE QUALITY AND MINERAL NUTRIENT COMPOSITION OF YAM |
| title_sort | effect of nitrogen fertilizer sources on the quality and mineral nutrient composition of yam |
| topic | Nitrogen fertilizer, white yam, soil acidity |
| topic_facet | Nitrogen fertilizer, white yam, soil acidity |
| url | https://ija.oauife.edu.ng/index.php/ija/article/view/440 |
| work_keys_str_mv | AT okponsn effectofnitrogenfertilizersourcesonthequalityandmineralnutrientcompositionofyam AT aduayiea effectofnitrogenfertilizersourcesonthequalityandmineralnutrientcompositionofyam |