Evaluation of N2-fixation and nitrogen economy of a maize/cowpea intercrop system using15N dilution methods

Methods of Seawater Analysis

1999 • 7,488 citations

Methods of seawater analysis

1984 • 3,653 citations

The Concept of a ‘Land Equivalent Ratio’ and Advantages in Yields from Intercropping

1980 • 1,076 citations

Methods for Evaluating Biological Nitrogen Fixation

1981 • 741 citations

Current Perspectives in Nitrogen Fixation

1982 • 587 citations

Estimating N2-fixation in the field using 15N-labelled fertilizer: Some problems and solutions

1983 • 278 citations

Estimation of N2 fixation by isotope dilution: An appraisal of techniques involving 15N enrichment and their application

1985 • 270 citations

Influence of Inorganic Nitrogen on Nitrogen Fixation by Legumes as Revealed by N15¹

1958 • 263 citations

Estimate of symbiotically fixed nitrogen in field grown soybeans using variations in15N Natural abundance

1979 • 148 citations

Estimates of N₂ Fixation Based on Differences in the Natural Abundance of ¹⁵N in Nodulating and Nonnodulating Isolines of Soybeans

1980 • 103 citations

Apparatus for preparing nitrogen from ammonium chloride for nitrogen-15 determinations

1977 • 99 citations

Fertilizer‐N Effects on N₂ Fixation by Cowpea and Soybean¹

1983 • 96 citations

Nitrogen Tracers in Nitrogen Cycle Studies—Past Use and Future Needs

1973 • 94 citations

The natural abundance of 15N in an irrigated soybean crop and its use for the calculation of nitrogen fixation

1985 • 89 citations

Maize/cowpea intercrop system: Effect of nitrogen fertilizer on productivity and efficiency

1986 • 84 citations

Mineral N effects on cowpea and soybean crops in a Nigerian soil

1982 • 73 citations

Field evaluation of 15N techniques for estimating nitrogen fixation in legume-grass associations

1985 • 73 citations

An evaluation of 15N methods for estimating nitrogen fixation in a subterranean clover-perennial ryegrass sward

1983 • 72 citations

Mobilization of Nitrogen in Fruiting Plants of a Cultivar of Cowpea

1983 • 70 citations

Relative Sowing Time and Density of Component Crops in a Maize/Cowpea Intercrop System

1987 • 51 citations

Mineral N effects on cowpea and soybean crops in a Nigerian soil

1982 • 47 citations