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Potential N (SN) and P (SP) supplies, N and P utilization efficiencies and fertilizer recovery rates for the northern Guinea Savanna (NGS) agro-ecological zone of Nigeria were derived from data collected on farmers fields, and used as input in the QUantitative Evaluation of the Fertility of Trop...


Tabi, FODiels, J.Ogunkunle, AOIwuafor, E.N.O.Vanlauwe, BernardSanginga, Nteranya[Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria]Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria

The optimal plant growth habit and architecture of common bean (Phaseolus vulgaris L.) is dependent on environmental conditions. The objectives of this research were to determine if plant growth habit impacts a plant s ability to grow in low P conditions, as measured by P uptake, seed yield, and ...


Cichy, Karen AnnSnapp, Sieglinde S.Blair, Matthew W.[Plant growth habit, root architecture traits and tolerance to low soil phosphorus in an Andean bean population]Plant growth habit, root architecture traits and tolerance to low soil phosphorus in an Andean bean population

Low phosphorus availability is a primary constraint to crop production in developing countries. Adventitious roots play an important role in phosphorus acquisition, as they are localized near the soil surface where phosphorus is relatively abundant. A population of recombinant inbred lines of Pha...


Ochoa, IEBlair, Matthew W.Lynch, Jonathan P.[QTL analysis of adventitious root formation in common bean under contrasting phosphorus availability]QTL analysis of adventitious root formation in common bean under contrasting phosphorus availability

Cassava (Manihot esculenta Crantz) was grown in the greenhouse and in the field at different levels of phosphorus applied, with or without inoculation with VA mycorrhiza in sterilized or unsterilized soil. When grown in a sterilized soil to which eight levels of P had been applied the non-inocula...


Howeler, Reinhardt H.Cadavid, L.F.Burckhardt, E[Response of cassava to VA mycorrhizal inoculation and phosphorus application in greenhouse and field experiments]Response of cassava to VA mycorrhizal inoculation and phosphorus application in greenhouse and field experiments

Phosphorus (P) deficiency increased the secretion of phytases from roots of various plant species. The secretory phytases were collected with a dialysis membrane tube for 24 hours from roots of sixteen plant species grown with low or adequate supply of P in nutrient solutions. The activity of not...


Li, MOsaki, MRao, Idupulapati M.Tadano, T[Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions]Secretion of phytase from the roots of several plant species under phosphorus-deficient conditions

Legumes provide essential micronutrients that are found only in low amounts in the cereals or root crops. An ongoing project at CIAT has shown that the legume common bean is variable in the amount of seed minerals (iron, zinc, and other elements), vitamins, and sulfur amino acids that they contai...


Blair, Matthew W.Astudillo, CarolinaRengifo, JBeebe, Stephen E.Graham, R[QTL analyses for seed iron and zinc concentrations in an intra-genepool population of Andean common beans (Phaseolus vulgaris L.)]QTL analyses for seed iron and zinc concentrations in an intra-genepool population of Andean common beans (Phaseolus vulgaris L.)

Nitrogen (N) has been gradually depleted from West African soils and now poses serious threats to food production. Many ways of increasing N supply (e.g. judicious use of inorganic fertilizers and nitrogen-fixing plants) have been tried in West African farming systems. Herbaceous and woody legume...


Sanginga, Nteranya[Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems]Role of biological nitrogen fixation in legume based cropping systems: A case study of West Africa farming systems

Low soil P availability is a primary constraint to common bean (Phaseolus vulgaris L.) production in Latin America and Africa. Substantial genotypic variation in bean adaptation to low phosphorus (LP) availability has been linked with root traits that enhance the efficiency of soil foraging. The ...


Beebe, Stephen E.Rojas, MYan, XBlair, Matthew W.Pedraza García, FabioMuñoz Arboleda, FernandoTohme, Joseph M.Lynch, Jonathan P.[Quantitative trait loci for root architecture traits correlated with phosphorus acquisition in common bean]Quantitative trait loci for root architecture traits correlated with phosphorus acquisition in common bean

The relationship between root-hair growth, acid exudation and phosphorus (P) uptake as well as the quantitative trait loci (QTLs) associated with these traits were determined for a recombinant inbred line (RIL) population derived from the cross of two contrasting common bean (Phaseolus vulgaris L...


Yan, XLiao, HBeebe, Stephen E.Blair, Matthew W.Lynch, Jonathan P.[QTL mapping of root hair and acid exudation traits and their relationship to phosphorus uptake in common bean]QTL mapping of root hair and acid exudation traits and their relationship to phosphorus uptake in common bean

Sesbania sesban and S. goetzei accessions were screened on Vertisols at PH 6.8 and acid clay soils (Nitosols) with and without application of phosphours (60 kg P/ha). Both species were generally well adapted to the Vertisols and grew to an overall mean height of 249 cm 14 months after transplanti...


Siaw, D.E.K.A.Berhe, KahsayTothill, J.C.[Screening of two Sesbania species for fodder potential and response to phosphorus application on an acid soil in Ethiopia]Screening of two Sesbania species for fodder potential and response to phosphorus application on an acid soil in Ethiopia

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