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Rao, Idupulapati M.Ayarza, Miguel AngelGarcía, Ramiro[Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes]Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes
Rao, Idupulapati M.Cramer, Grant M.[Plant nutrition and crop improvement in adverse soil conditions]Plant nutrition and crop improvement in adverse soil conditions

The effects of Leucaena leucocephala and L. pallida prunings and cattle manure on maize nutrient uptake and yield were investigated in a hedgerow inter-cropping trial in the Ethiopian highlands. Hedgerow inter-cropping (also called alley cropping) is an agroforestry system in which trees are grow...


Lupwayi, N.Z.Haque, I.Saka, A.R.Siaw, D.E.K.A.[Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake]Leucaena hedgerow intercropping and cattle manure application in the Ethiopian highlands. II. Maize yields and nutrient uptake

Eight chemical methods were employed for estimating the available P in 32 Ethiopian soils using Phasey bean (Macroptilium lathyroides c.Murray) as a test crop grown in small pots in a glasshouse and the soil test values then correlated with plant characteristics. Olsens' method gave the highest c...


Mamo, T.Haque, I.[Phosphorus status of some Ethiopian soils. III. Evaluation of soil test methods for available phosphorus]Phosphorus status of some Ethiopian soils. III. Evaluation of soil test methods for available phosphorus

We conducted an experiment to determine the effects of concentration and astringency of extractable and bound condensed tannins (CT) in tropical legumes on intake, digestibility, and nitrogen (N) utilization by sheep. The test legumes (Desmodium ovalifolium and Flemingia macrophylla) had similar ...


Barahona Rosales, RolandoLascano, Carlos E.Cochran, RMorrill, JTitgemeyer, EC[Intake, digestion, and nitrogen utilization by sheep fed tropical legumes with contrasting tannin concentration and astringency]Intake, digestion, and nitrogen utilization by sheep fed tropical legumes with contrasting tannin concentration and astringency

A glasshouse experiment was conducted to determine how reduction conditions would affect plant nutrient availability and uptake in a red-yellow latosol (Acrustox). Soil analysis showed that the most important changes were a marked increase in extractable iron and an inhibition of nitrification. T...


Couto, W.Sanzonowics, CLeite, GG[Effect of excess water in an oxisol on ammonium, nitrate, iron and manganese availability and nutrient uptake of two tropical forage species]Effect of excess water in an oxisol on ammonium, nitrate, iron and manganese availability and nutrient uptake of two tropical forage species

Los procesos erosivos en laderas Andinas (evidentes con la presencia de calvas, procesos de soliflucción, cárcavas, etc.) limitan el crecimiento de las plantas y, con ello, las posibilidades de sustentar una población humana creciente en la región. Los sistemas de producción tradicionales involu...


Ricaurte Oyola, José JaumerZhiping QuiFilipe, DRao, Idupulapati M.Amézquita Collazos, Edgar[Distribución radicular, absorción de nutrientes y erosión edáfica en sistemas de cultivos y forrajes en laderas del Cauca, Colombia = Roots distribution, nutrient absorption and soils erotion in forage and crops systems in Cauca hillside (Colombia)]Distribución radicular, absorción de nutrientes y erosión edáfica en sistemas de cultivos y forrajes en laderas del Cauca, Colombia = Roots distribution, nutrient absorption and soils erotion in forage and crops systems in Cauca hillside (Colombia)

In view of widespread deficiencies, a long-term experiment was started at the International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India in 2007 to identify economically efficient application strategy (full or 50% dose every or every second year) of sulphur (S) (30 kg ha?...


Girish, C.Suhas, P.W.Kanwar, L.S.Rajesh, C.[Enhanced nutrient and rainwater use efficiency in maize and soybean with secondary and micro nutrient amendments in the rainfed semi-arid tropics]Enhanced nutrient and rainwater use efficiency in maize and soybean with secondary and micro nutrient amendments in the rainfed semi-arid tropics

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