C. A. Black

5.5k citations

76 papers · 3.8k indexed · 3 hit papers · h-index 26

Impact in

Soil Science top 0.5%
- Soil Carbon and Nitrogen Dynamics
- Agricultural Science and Fertilization
Environmental Chemistry top 0.5%
- Soil and Water Nutrient Dynamics

Papers in

Industrial and Manufacturing Engineering 20
- Phosphorus and nutrient management 18
Soil Science 22
- Soil Carbon and Nitrogen Dynamics 18

Co-authors: J. O. Legg R. H. Jackman D. R. Bouldin Frederick R. Duke Fathi Amer A. G. Caldwell C. A. I. Goring Neha Mehta
Journals: Soil Science Society of America Journal (29 papers)Soil Science (13 papers)Agronomy Journal (9 papers)Plant and Soil (7 papers)American Water Works Association (2 papers)
Partner nations: United States China Australia

In The Last Decade

C. A. Black

73 papers receiving 3.3k citations

Hit Papers

align trajectories log scale

Soil-plant relationships 1968 · 373 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

1968 Andalas University Repository (Andalas University)
1965 Methods of soil analysis. Part 2: Chemical and microbiological properties
1965 Medical Entomology and Zoology

Peers

Countries citing papers authored by C. A. Black

Since Specialization

Citations

This map shows the geographic impact of C. A. Black's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by C. A. Black with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. A. Black more than expected).

Fields of papers citing papers by C. A. Black

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. A. Black. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by C. A. Black. The network helps show where C. A. Black may publish in the future.

Co-authorship network

The 25 scholars most cited alongside C. A. Black, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with C. A. Black Line = papers co-authored together C. A. Black links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Effect of neutralization and addition of urea, sucrose, and various glycols on phosphorus absorption and leaf damage from foliar-applied phosphate Plant and Soil ·Dirk Barèl, C. A. Black	1979	9
2	SOLUBILITY OF HYDROXYAPATITE Soil Science ·K Hara, S. H. Chien, C. A. Black	1971	41
3	Changes in extractable organic phosphorus in soil in the presence and absence of plants Plant and Soil ·Danielle Miller, C. A. Black	1970	3
4	Uptake of phosphorus by plants in relation to carbon dioxide production and organic phosphorus mineralization in soils Plant and Soil ·G. S. Sekhon, C. A. Black	1968	2
5	SOIL ORGANIC PHOSPHORUS AND PLANT GROWTH Soil Science ·K Hara, C. A. Black	1968	1
6	Physical and mineralogical properties, including statistics of measurement and sampling C. A. Black	1965	83
7	Chemical and microbiological properties C. A. Black	1965	75
8	Soil-Plant Relationships AIBS Bulletin ·S. H. Wittwer, C. A. Black	1958	17
9	Determination of Organic Phosphorus in Soils: III. Comparison of Methods Soil Science Society of America Journal ·A. van Diest, C. A. Black	1958	3
10	A Biological Slope‐Ratio Method for Evaluating Nutrient Availability in Soils Soil Science Society of America Journal ·A. Arregui, C. A. Black	1957	4
11	Fertilizer Evaluation: I. Fundamental Principles Soil Science Society of America Journal ·C. A. Black, A. A. Silkina	1956	42
12	Fertilizer Evaluation: III. Availability Coefficient of Water‐Soluble and Citrate‐Soluble Phosphorus in Acidulated Phosphate Fertilizers Soil Science Society of America Journal ·C. A. Black, John R. Webb, Oscar Kempthorne	1956	4
13	Characterization of soil phosphorus by anion exchange resin adsorption and P32-equilibration Plant and Soil ·Fathi Amer, D. R. Bouldin, C. A. Black, Frederick R. Duke	1955	258
14	Significance of soil organic phosphorus to plant growth Iowa State University Digital Repository (Iowa State University) ·Ibatova Sh. M., C. A. Black, Oscar Kempthorne, Daniel Schwarzbach	1954	7
15	Willcox's Agrobiology: II. Application of the Nitrogen Constant 318¹ Agronomy Journal ·C. A. Black, Oscar Kempthorne	1954	1
16	Willcox's Agrobiology: III. The Inverse Yield‐Nitrogen Law¹ Agronomy Journal ·W. C. White, C. A. Black	1954	1
17	Willcox's Agrobiology: I. Theory of the Nitrogen Constant 318¹ Agronomy Journal ·C. A. Black, Oscar Kempthorne	1954	1
18	Mineral Nutrition of Plants Agronomy Journal ·C. A. Black	1952	10
19	Nutrient uptake by soybeans on two Iowa soils Iowa State University Digital Repository (Iowa State University) ·L. C. Hammond, C. A. Black, A. G. Norman	1951	30
20	HYDROLYSIS OF IRON, ALUMINUM, CALCIUM, AND MAGNESIUM INOSITOL PHOSPHATES BY PHYTASE AT DIFFERENT pH VALUES Soil Science ·R. H. Jackman, C. A. Black	1951	8

About C. A. Black

C. A. Black is a scholar working on Industrial and Manufacturing Engineering, Soil Science, Environmental Chemistry, Plant Science and Pollution, having authored 76 papers that have together received 3.8k indexed citations. Recurring topics across this work include Soil and Water Nutrient Dynamics (19 papers), Phosphorus and nutrient management (18 papers), Soil Carbon and Nitrogen Dynamics (18 papers), Plant nutrient uptake and metabolism (7 papers), Phytase and its Applications (6 papers), Pesticide and Herbicide Environmental Studies (5 papers), Banana Cultivation and Research (4 papers) and Clay minerals and soil interactions (4 papers). The work is most often cited by research in Soil Science (1.6k citations), Environmental Chemistry (924 citations), Industrial and Manufacturing Engineering (692 citations), Pollution (465 citations) and Plant Science (1.4k citations). C. A. Black has collaborated with scholars based in United States, China and Australia. Frequent co-authors include J. O. Legg, R. H. Jackman, D. R. Bouldin, Frederick R. Duke, Fathi Amer, A. G. Caldwell, C. A. I. Goring, Neha Mehta, S. H. Chien and L. C. Bell. Their work appears in journals such as Soil Science Society of America Journal, Soil Science, Agronomy Journal, Plant and Soil and American Water Works Association.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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