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Growth parameters and dry-matter yield of Sesbania sesban and S. goetzei accessions were evaluated for adaptability and response to various nitrogen (N) and phosphorus (P) combinations. N and P fertilisation significantly increased canopy height, growth rate, number of primary branches per plant,...


Kanyama-Phiri, G.Y.Dzowela, B.H.Kategile, J.A.[Screening Sesbania for response to N and P combinations and adaptability in a medium-altitude environment in Malawi]Screening Sesbania for response to N and P combinations and adaptability in a medium-altitude environment in Malawi

Summarizes and discusses the results of an experiment carried out in 1983 with oats and Italian ryegrass on a soil with vertic properties near Debre Berhan area (Ethiopia) to examine the effects of improved drainage and fertilization (N/P).


Haque, I.Jutzi, S.C.[Effets du drainage ameliore et de l'application d'engrais sur la croissance de l'ivraie multiflore et de l'avoine sur un sol a proprietes vertiques a Debre Berhan, Ethiopie]Effets du drainage ameliore et de l'application d'engrais sur la croissance de l'ivraie multiflore et de l'avoine sur un sol a proprietes vertiques a Debre Berhan, Ethiopie

Reports on the effects of a processed commercial phosphorus fertilizer compared with those of a relatively inexpensive rock phosphate on the growth of a native Ethiopian clover.


Haque, I.Jutzi, S.C.[Efficacite relative de phosphates chimiques et naturels sur la croissance d'un trefle africain]Efficacite relative de phosphates chimiques et naturels sur la croissance d'un trefle africain

Describes the chemical characteristics of soils at the IAR research sub-centres at Sheno and Ginchi including PH, organic matter, total nitrogen, phosphorus & exchangeable cations, as well as physical characteristics including soil colour, soil texture, bulk density and soil moisture.


Kamara, C.S.Haque, I.Beyene, D.[Characteristics of soils at the IAR research sub-centres at Sheno and Ginchi]Characteristics of soils at the IAR research sub-centres at Sheno and Ginchi
Borrero, GonzaloAsakawa, N.Castro, A.Baquero Peñuela, JEArguello, OrlandoGallo, ORao, Idupulapati M.Marin, N[Fracciones de fosforo y materia organica en oxisol colombiano bajo diferentes cultivos]Fracciones de fosforo y materia organica en oxisol colombiano bajo diferentes cultivos

We conducted field experiments over 2 years on two acid soils of southern Cameroon to test whether efficient uptake and use of phosphorus (P) from less available sources by grain legume genotypes could benefit subsequent rotational maize. We grew two crops each year. For the first crop we grew 4 ...


Jemo, M.Abaidoo, R.C.Nolte, CTchienkoua, MSanginga, NteranyaHorst, Walter J.[Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon]Phosphorus benefits from grain-legume crops to subsequent maize grown on acid soils of southern Cameroon

Phosphorus (P) uptake by plant roots depends on P intensity (I) and P quantity (Q) in the soil. The relative importance of Q and I on P uptake is unknown for soils with large P sorption capacities because of difficulties in determining trace levels of P in the soil solution. We applied a new isot...


Pypers, PieterDelrue, JDiels, J.Smolders, EMerckx, R.[Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values]Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity : Comparison of E- and L-values

It is generally assumed that phosphorus (P) availability for plant growth on highly weathered and P-deficient tropical soils may depend more on biologically mediated organic P (Po) turnover processes than on the release of adsorbed inorganic P (Pi). However, experimental evidence showing the link...


Oberson, AstridFriesen, Dennis K.Rao, Idupulapati M.Buhler, SFrossard, Emmanuel[Phosphorus transformations in an oxisol under contrasting land-use systems: The role of the soil microbial biomass]Phosphorus transformations in an oxisol under contrasting land-use systems: The role of the soil microbial biomass

Field inoculation trials with cassava (Manihot esculenta Crantz) were conducted in Quilichao (typic Dystropept soil) and Carimagua (Haplustox soil). In Quilichao, with a large and effective native VA-mycorrhizal (VAM) population, inoculation withGlomus manihotis did not increase cassava yields si...


Howeler, Reinhardt H.Sieverding, E[Potentials and limitations of mycorrhizal inoculation illustrated by experiments with field-grown cassava]Potentials and limitations of mycorrhizal inoculation illustrated by experiments with field-grown cassava

There are several indications that legumes are capable of accessing sparingly soluble phosphorus (P) in the soil through root-induced processes. We hypothesize that this plant-induced mobilization of P can be demonstrated if the plant accessible P assessed by isotopic dilution ( L-value ) exceeds...


Pypers, PieterLoon, L. vanDiels, J.Abaidoo, R.C.Smolders, EMerckx, R.[Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values]Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values

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