N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea
The effects of various doses of N and P fertilizers and their combinations on the growth and physical properties of Gmelina arborea Roxb. seedlings on latosolic soil were investigated. Four levels of N and P (0.0, 9.5, 19.0 and 28.5 g/plant corresponding to 0,1,2 and 3 levels, respectively) were a...
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| Format: | Article |
| Language: | English English |
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1992
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3020/ http://psasir.upm.edu.my/id/eprint/3020/1/N_and_P_Nutrition_of_Gmelina_arbarea_Roxb._Seedlings_on_Latosolic_Soil.pdf |
| _version_ | 1848839411467288576 |
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| author | Ogbonnaya, Chuks I |
| author_facet | Ogbonnaya, Chuks I |
| author_sort | Ogbonnaya, Chuks I |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The effects of various doses of N and P fertilizers and their combinations on the growth and physical properties of
Gmelina arborea Roxb. seedlings on latosolic soil were investigated. Four levels of N and P (0.0, 9.5, 19.0 and
28.5 g/plant corresponding to 0,1,2 and 3 levels, respectively) were applied in aU possible combinations. N was supplied as calcium amonium nitrate and P as super phosphate. Zero levels of Nand P (NOPO) were incorporated
as the control. N and its combinations with P contributed significantly to improved wood specific gravity, plant
height growth, radial growth (root collar' diameter), and dry matter production. Nand NP combinations were also
the most effective in above-ground production (i.e. low root-shoot ratio) campal'ed to P alone and the control. Leaf
area ratio (UR), howeuer, was reduced by most of the nutrient combinations cmnpared with the controL N1P3
produced the best wood specific gravity, N1P2 the most height growth, N3P1 the most radial growth and dry matter
production, N3P2 the highest LAR, while the lowest root-shoot ratio or highest shoot production was obtained with N2PO and N3P1 nutrient combinations. Nutrient combinations involving N and P in the ratio oj3:1 (N3P1) are
recommended for the growth of G. arborea seedlings on latosolic soil at the nursery or earl)1 establishment stage in the field. |
| first_indexed | 2025-11-15T07:11:01Z |
| format | Article |
| id | upm-3020 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:11:01Z |
| publishDate | 1992 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-30202013-05-27T07:05:10Z http://psasir.upm.edu.my/id/eprint/3020/ N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea Ogbonnaya, Chuks I The effects of various doses of N and P fertilizers and their combinations on the growth and physical properties of Gmelina arborea Roxb. seedlings on latosolic soil were investigated. Four levels of N and P (0.0, 9.5, 19.0 and 28.5 g/plant corresponding to 0,1,2 and 3 levels, respectively) were applied in aU possible combinations. N was supplied as calcium amonium nitrate and P as super phosphate. Zero levels of Nand P (NOPO) were incorporated as the control. N and its combinations with P contributed significantly to improved wood specific gravity, plant height growth, radial growth (root collar' diameter), and dry matter production. Nand NP combinations were also the most effective in above-ground production (i.e. low root-shoot ratio) campal'ed to P alone and the control. Leaf area ratio (UR), howeuer, was reduced by most of the nutrient combinations cmnpared with the controL N1P3 produced the best wood specific gravity, N1P2 the most height growth, N3P1 the most radial growth and dry matter production, N3P2 the highest LAR, while the lowest root-shoot ratio or highest shoot production was obtained with N2PO and N3P1 nutrient combinations. Nutrient combinations involving N and P in the ratio oj3:1 (N3P1) are recommended for the growth of G. arborea seedlings on latosolic soil at the nursery or earl)1 establishment stage in the field. 1992 Article NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3020/1/N_and_P_Nutrition_of_Gmelina_arbarea_Roxb._Seedlings_on_Latosolic_Soil.pdf Ogbonnaya, Chuks I (1992) N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea. Pertanika, 15 (3). pp. 199-205. English |
| spellingShingle | Ogbonnaya, Chuks I N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title | N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title_full | N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title_fullStr | N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title_full_unstemmed | N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title_short | N and P Nutrition of Gmelina arbarea Roxb. Seedlings on Latosolic Soil. I: Effects of N and P Fertilizers and their Combinations on Growth and Physical Properties of Gmelina arbarea |
| title_sort | n and p nutrition of gmelina arbarea roxb. seedlings on latosolic soil. i: effects of n and p fertilizers and their combinations on growth and physical properties of gmelina arbarea |
| url | http://psasir.upm.edu.my/id/eprint/3020/ http://psasir.upm.edu.my/id/eprint/3020/1/N_and_P_Nutrition_of_Gmelina_arbarea_Roxb._Seedlings_on_Latosolic_Soil.pdf |