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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 63 1069 984 288 253 280 10935

Ashok K. Alva publications per year

The chart shows the history of publications by Ashok K. Alva between 1979 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ashok K. Alva published across 47 years, from 1979 to 2025, averaging 6.3 papers a year. Output peaked at 23 publications in 1999. 3 of the 296 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1979 to 2025. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 1999. 1979: 1 publication 1980: 1 publication 1981: 3 publications 1982: 0 publications 1983: 0 publications 1984: 1 publication 1985: 4 publications 1986: 7 publications 1987: 1 publication 1988: 7 publications 1989: 4 publications 1990: 11 publications 1991: 11 publications 1992: 6 publications 1993: 15 publications 1994: 5 publications 1995: 7 publications 1996: 9 publications 1997: 9 publications 1998: 19 publications 1999: 23 publications 2000: 15 publications 2001: 5 publications 2002: 9 publications 2003: 13 publications 2004: 1 publication 2005: 2 publications 2006: 16 publications 2007: 8 publications 2008: 9 publications 2009: 4 publications 2010: 7 publications 2011: 8 publications 2012: 14 publications 2013: 10 publications 2014: 9 publications 2015: 2 publications 2016: 7 publications 2017: 5 publications 2018: 3 publications 2019: 1 publication 2020: 0 publications 2021: 1 publication 2022: 0 publications 2023: 0 publications 2024: 1 publication 2025: 2 publications
1979 2025

296 publications in total across all disciplines

View publications per year as a table
Ashok K. Alva: publications per year, 1979 to 2025
Year Publications
1979 1
1980 1
1981 3
1982 0
1983 0
1984 1
1985 4
1986 7
1987 1
1988 7
1989 4
1990 11
1991 11
1992 6
1993 15
1994 5
1995 7
1996 9
1997 9
1998 19
1999 23
2000 15
2001 5
2002 9
2003 13
2004 1
2005 2
2006 16
2007 8
2008 9
2009 4
2010 7
2011 8
2012 14
2013 10
2014 9
2015 2
2016 7
2017 5
2018 3
2019 1
2020 0
2021 1
2022 0
2023 0
2024 1
2025 2
Total 296
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Ashok K. Alva publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Ashok K. Alva sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 276–280 publications, is where this scientist sits. 36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36–40 publications 467+

This scientist: 280 publications — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33 280
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Ashok K. Alva D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Ashok K. Alva sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 63 D-Index, is where this scientist sits. 30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 63 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59
62 54
63 61 63
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Research.com Recognitions

  • 2004 - Fellow of the Soil Science Society of America (SSSA)
  • 2002 - Fellow of the American Society of Agronomy (ASA)

Overview

What is he best known for?

The fields of study he is best known for:

  • Fertilizer
  • Botany
  • Irrigation

His scientific interests lie mostly in Leaching, Soil water, Agronomy, Environmental chemistry and Fertilizer. The Leaching study combines topics in areas such as Fertigation, Irrigation, Hydrology and Entisol. Many of his studies involve connections with topics such as Chromatography and Soil water.

Ashok K. Alva has researched Agronomy in several fields, including Rootstock, Soil science and Nutrient. His Environmental chemistry research incorporates themes from Alfisol, Soil pH, Mineralogy and Nitrate. His research in Fertilizer intersects with topics in Soil classification and Calcareous.

His most cited work include:

  • Engineered carbon (biochar) prepared by direct pyrolysis of Mg-accumulated tomato tissues: characterization and phosphate removal potential. (163 citations)
  • Effects of Phosphorus/Aluminum Molar Ratio and Calcium Concentration on Plant Response to Aluminum Toxicity (124 citations)
  • Leaching of Nitrogen from Slow-Release Urea Sources in Sandy Soils (114 citations)

What are the main themes of his work throughout his whole career to date?

Ashok K. Alva mainly focuses on Agronomy, Soil water, Environmental chemistry, Leaching and Fertilizer. His biological study spans a wide range of topics, including Rootstock and Nutrient. His study in the field of Field capacity, Soil conditioner and Soil pH is also linked to topics like Amendment.

Ashok K. Alva combines subjects such as Loam, Soil contamination and Mineralogy with his study of Environmental chemistry. The various areas that he examines in his Leaching study include Entisol, Nitrate, Leachate and Irrigation scheduling. His work in Fertilizer covers topics such as Fruit tree which are related to areas like Orchard.

He most often published in these fields:

  • Agronomy (51.15%)
  • Soil water (48.85%)
  • Environmental chemistry (33.33%)

What were the highlights of his more recent work (between 2007-2018)?

  • Agronomy (51.15%)
  • Soil water (48.85%)
  • Irrigation (18.39%)

In recent papers he was focusing on the following fields of study:

The scientist’s investigation covers issues in Agronomy, Soil water, Irrigation, Leaching and Fertilizer. His Agronomy research integrates issues from Phosphorus and Nutrient. His Soil water research includes themes of Sludge and Fly ash.

His Irrigation study combines topics in areas such as Crop simulation model, Crop yield, Plant nutrition and Soil horizon. His study looks at the relationship between Leaching and topics such as Nutrient management, which overlap with Water pollution, Soil Pollutants and Greenhouse. His Loam research is multidisciplinary, incorporating elements of Environmental chemistry and Sewage treatment.

Between 2007 and 2018, his most popular works were:

  • Engineered carbon (biochar) prepared by direct pyrolysis of Mg-accumulated tomato tissues: characterization and phosphate removal potential. (163 citations)
  • Phosphorus in China's Intensive Vegetable Production Systems: Overfertilization, Soil Enrichment, and Environmental Implications. (86 citations)
  • Carbon Sequestration under Irrigated Switchgrass (Panicum virgatum L.) Production (45 citations)

In his most recent research, the most cited papers focused on:

  • Fertilizer
  • Botany
  • Ecology

Agronomy, Irrigation, Soil water, Leaching and Cultivar are his primary areas of study. His studies in Agronomy integrate themes in fields like Litter, Malus and Nutrient. The concepts of his Irrigation study are interwoven with issues in Soil type, Crop yield and Soil horizon.

His study in Soil water is interdisciplinary in nature, drawing from both Perennial plant, Monoculture and Biomass, Panicum virgatum, Bioenergy. His Leaching study integrates concerns from other disciplines, such as Soil Pollutants, Greenhouse, Leaching model, Nutrient management and Water pollution. His Fertigation research includes elements of Citrus × sinensis and Citrus paradisi.

Best Publications

  • Engineered carbon (biochar) prepared by direct pyrolysis of Mg-accumulated tomato tissues: characterization and phosphate removal potential.

    Ying Yao;Bin Gao;Jianjun Chen;Ming Zhang

  • Phosphorus in China's Intensive Vegetable Production Systems: Overfertilization, Soil Enrichment, and Environmental Implications.

    Zhengjuan Yan;Pengpeng Liu;Yuhong Li;Lin Ma

  • Effects of Phosphorus/Aluminum Molar Ratio and Calcium Concentration on Plant Response to Aluminum Toxicity

    A. K. Alva;D. G. Edwards;C. J. Asher;F. P. C. Blamey

  • Leaching of Nitrogen from Slow-Release Urea Sources in Sandy Soils

    F. L. Wang;A. K. Alva

  • Evaluation of capacitance probes for optimal irrigation of citrus through soil moisture monitoring in an entisol profile

    Ali Fares;Ashok K. Alva

  • Ammonia Volatilization From Different Fertilizer Sources And Effects Of Temperature And Soil ph1

    Z. L. He;A. K. Alva;D. V. Calvert;D. J. Banks

  • Relationships between Root Length of Soybean and Calculated Activities of Aluminum Monomers in Nutrient Solution

    A. K. Alva;D. G. Edwards;C. J. Asher;F. P. C. Blamey

  • Clinoptilolite zeolite and cellulose amendments to reduce ammonia volatilization in a calcareous sandy soil

    Z. L. He;D. V. Calvert;A. K. Alva;Y. C. Li

  • Soil pH affects copper fractionation and phytotoxicity.

    A. K. Alva;B. Huang;S. Paramasivam

  • Nitrogen best management practice for citrus trees: I. Fruit yield, quality, and leaf nutritional status

    A.K. Alva;S. Paramasivam;T.A. Obreza;A.W. Schumann

  • DIFFERENTIAL ADSORPTION OF TRACE METALS BY SOILS AS INFLUENCED BY EXCHANGEABLE CATIONS AND IONIC STRENGTH

    B. Zhu;A. K. Alva

  • Nutrient content of biomass components of Hamlin sweet orange trees

    Dirceu Mattos;José Antônio Quaggio;Heitor Cantarella;Ashok Kumar Alva

  • Soil Water Components Based on Capacitance Probes in a Sandy Soil

    A. Fares;A. K. Alva

  • The role of calcium in alleviating aluminium toxicity

    AK Alva;CJ Asher;DG Edwards

  • Potassium Management for Optimizing Citrus Production and Quality

    Ashok K. Alva;Dirceu Mattos;Siva Paramasivam;Bhimu Patil

  • A potato model intercomparison across varying climates and productivity levels

    David H. Fleisher;Bruno Condori;Roberto Quiroz;Ashok Alva

  • Ammonium Adsorption and Desorption in Sandy Soils

    F. L. Wang;A. K. Alva

  • Nitrogen management for high yield and quality of citrus in sandy soils

    A. K. Alva;S. Paramasivam

  • Soil microbial, fungal, and nematode responses to soil fumigation and cover crops under potato production

    H. P. Collins;A. Alva;R. A. Boydston;R. L. Cochran

  • Chemical Association of Cu, Zn, Mn, and pb in Selected Sandy Citrus Soils

    M. Zhang;A. K. Alva;Y. C. Li;D. V. Calvert

Frequent Co-Authors

Yuncong Li
Yuncong Li University of Florida
Zhenli He
Zhenli He University of Florida
Malcolm E. Sumner
Malcolm E. Sumner University of Georgia
Guodong Liu
Guodong Liu Harbin Institute of Technology
Colin J. Asher
Colin J. Asher University of Queensland
Megh Singh
Megh Singh University of Florida
Dirceu Mattos
Dirceu Mattos Instituto Agronômico de Campinas
Peter J. Stoffella
Peter J. Stoffella University of Florida
Donald A. Graetz
Donald A. Graetz University of Florida
F. P. C. Blamey
F. P. C. Blamey University of Queensland

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