Dr.P.N.Siva Prasad

@angrau.ac.in

Subject Matter Specialist Crop Production & Soil Science (NRM)
Dr.K.L.Rao KVK, Garikapadu NTR district, A.P

Dr.P.N.Siva Prasad


                              Download Compact PDF  
https://researchid.co/pnsivaprasad

EDUCATION

Doctor of Philosophy in Soil Science

RESEARCH, TEACHING, or OTHER INTERESTS

Agricultural and Biological Sciences, Soil Science, Agronomy and Crop Science
3

Scopus Publications

172

Scholar Citations

7

Scholar h-index

4

Scholar i10-index

Scopus Publications

  • SUITABILITY OF MULTINUTRIENT EXTRACTANTS FOR EVALUATION OF AVAILABLE SOIL ZINC FOR TOMATO NUTRITION OF KARNATAKA SOILS
    PN Siva Prasad, CT Subbarayappa
    Bangladesh Journal of Botany, 2022
    Pot experiment was conducted at University of Agricultural Sciences, Bangalore, Karnataka, which received five treatments i.e., 0, 5, 10, 15, 20 kg ZnSO4/ha. Among all the treatments Recommended NPK + ZnSO4 @ 20 kg/ha recorded highest mean dry matter yields of tomato. The amount of zinc extracted by different extractants were in the following order as Mehlich-3 - Zn > 0.1 N HCl - Zn > AB-DTPA - Zn > 0.01 N EDTA - Zn > DTPA - Zn > 0.01 M EDTA + 1 N NH4OAc - Zn > 1 N NH4OAc (pH 4.6) - Zn > 1 N NH4OAc (pH 7) - Zn. Among the various extractants tried DTPA - Zn gave positive and higher significant correlation with Brays per cent Yield (r = 0.781). The next better extractants were Mehlich-3 (r = 0.726) and AB-DTPA (r = 0.576) which were also significantly positively correlated with Brays per cent yield. The critical limits of DTPA, Mehlich-3, AB-DTPA, tomato plant and tomato fruit by graphical method were 1.12, 2.15, 1.20, 34 and 58 mg/kg, respectively. Bangladesh J. Bot. 51(4): 655-662, 2022 (December)
  • Establishing and validation of new critical limits of zinc for Tomato (Solanum lycopersicum L.) in Alfisols of Karnataka, India
    Pothagani N. Siva Prasad, Chickadibburahalli Thimmappa Subbarayappa, Ayyappa Sathish, Venkataramanappa Ramamurthy
    Journal of Plant Nutrition, 2022
    Critical limit (CL) determination of zinc (Zn) is much more important to assess the response of crop to its application in soils and for crops actual fertilizer requirement. This experiment was conducted at University of Agricultural Sciences, Bangalore in sandy clay loam texture soils. Based on the results of the pot culture experiment, the critical limits of DTPA, AB-DTPA, Mehlich-3, tomato plant and tomato fruit are 1.12, 1.20, 2.15, 34 and 58 mg kg−1, respectively. Tomato was highly responded to Zn application in soils below the critical limit whereas soils with Zn greater than 1.12 mg kg−1 did not respond much. For the confirmation of pot culture results, two field experiments were carried out during 2017–18 with different Zn treatments one in high and other in low zinc soils. The study concluded that for both low zinc and high zinc soils external application of zinc through Recommended dose of fertilizers (RDF) + ZnSO4 @ 30 kg ha−1 as soil application (SA) + foliar application (FA) @ 0.50% ZnSO4 and RDF + ZnSO4 @ 20 kg ha−1 as SA + FA @ 0.25% ZnSO4 significantly improved yield, nutrient concentration and uptake of nutrients, which helped in getting higher benefit cost (B:C) ratio of 4.74 and 4.96, respectively. This information is helpful in site-specific zinc nutrition in tomato and to enhance the productivity and profitability.
  • Sustainable Management and Restoration of the Fertility of Damaged Soils
    Ecosystem Services Types Management and Benefits, 2022

RECENT SCHOLAR PUBLICATIONS

  • Whitefly Associated Plant Viral Diseases and Their Interactions
    R Naram, M Ravi Kishor, K Lakshmikala, PN Siva Prasad, J Reddy, ...
    Journal of Scientific Research and Reports 31 (11), 1079-1086 , 2025
    2025
  • Biological Wastewater Treatment: Overcoming Barriers in Micropollutant Degradation
    S Mounika, BB Nayak, PN Siva Prasad, G Sree Pooja
    Emerging Micropollutants: Status in the Environment and Management through … , 2025
    2025
  • Impact of Closer Spacing on Sucking Pests and Pink Bollworm Infestation in Cotton Crop
    N Rajasekhar, KA Raju, K Lakshmikala, PNS Prasad, TJ Reddya, ...
    Journal of Experimental Agriculture International 47 (7), 343-348 , 2025
    2025
    Citations: 1
  • Impact of michaung cyclone effect on different crops in NTR district of south coastal Andhra Pradesh
    PNSPSKR M. Rajanarasimha, V Tejaswini, I.Venkat Reddy
    International Journal of Research in Agronomy 7 (4), 437-440 , 2024
    2024
  • District Agro Meteorological Advisory Services in Agriculture, Horticulture and its Allied Sectors in NTR District of Semi Arid Region of South Coastal Andhra Pradesh, India
    MR Narasimha, SK Raju, IV Reddy, PNS Prasad, N Rajashekar
    Int. J. Plant Soil Sci 35 (18), 663-669 , 2023
    2023
  • Impact of Agrometerology Advisory Services (AAS) for Assessment of Cotton Cropping System in NTR District of Andhra Pradesh, India
    RN Rajnarashimha N, Venkata Subbaiah, Venkata Reddy I, Siva Prasad PN
    International Journal of Environment and Climate Change, 13 (7), 495-502 , 2023
    2023
    Citations: 4
  • Study on the incidence of sucking pests and pink bollworm in cotton
    N Rajasekhar, PV Subbaiah, PN Prasad, MR Narasimha, IV Reddy
    Journal of Experimental Agriculture International 45 (7), 18-25 , 2023
    2023
    Citations: 3
  • Assessment of Available Major and Micronutrient Status of Soils under Varied Cropping Systems of N.T.R district, Andhra Pradesh
    IVRMR P.N. Siva Prasad, P. Venkata Subbaiah, N. Rajasekhar
    Indian Journal of Ecology 50 (2), 345-350 , 2023
    2023
    Citations: 5
  • Training need Assessment and Knowledge of Village Agricultural Assistants of NTR District of Andhra Pradesh
    IV Reddy, PV Subbaiah, R Narasimha, PN Prasad, NR Sehkar
    Asian Journal of Agricultural Extension, Economics & Sociology 41 (8), 242-250 , 2023
    2023
  • An Analysis of Impact of COVID-19 on Agriculture, Horticulture Crops and Livetocks in Krishna District, India
    IV Reddy, PV Subbaiah, R Narasimha, PN Prasad, N Rajasehkar
    Asian Journal of Agricultural Extension, Economics & Sociology 41 (8), 187-193 , 2023
    2023
  • Suitability of Multinutrient Extractants for Evaluation Of Available Soil Zinc for Tomato Nutrition Of Karnataka Soils
    PNS Prasad, CT Subbarayappa
    Bangladesh Journal of Botany 51 (4), 655-662 , 2022
    2022
  • Liquid Nano-Urea: An Emerging Nano Fertilizer Substitute for Conventional Urea
    NRNAK K. Lakshman, M. Chandrakala, P. N. Siva Prasad, G. Prasad Babu, T ...
    Chronicle of Bioresource Management 2022 6 (2), 54-59 , 2022
    2022
    Citations: 31
  • Establishing and validation of new critical limits of zinc for Tomato (Solanum lycopersicum L.) in Alfisols of Karnataka, India
    PNS Prasad, C Thimmappa Subbarayappa, A Sathish, V Ramamurthy
    Journal of Plant Nutrition 45 (11), 1624-1641 , 2022
    2022
    Citations: 4
  • Sustainable management and restoration of the fertility of damaged soils
    BR Goud, M Raghavendra, PS Prasad, V Hatti, HM Halli, GV Nayaka, ...
    Agriculture Issues and Policies 113 , 2022
    2022
    Citations: 26
  • Nano-fertilizers for sustainable agriculture
    D Abhigna, K Lakshman, PNS Prasad
    Chronicle Of Bioresource Management 5 (2), 037-040 , 2021
    2021
    Citations: 6
  • Monitoring Biotic and Abiotic Stress in Crop Plants through Remote Sensing
    SPPNK Lakshman
    Chronicle of Bioresource Management 2021, 5(2):033-036 5 (2), 33-36 , 2021
    2021
    Citations: 2
  • Impact of Zinc Fertilization on Tomato (Solanum lycopersicum L.) Yield, Zinc use Efficiency, Growth and Quality Parameters in Eastern Dry Zone (EDZ) Soils of Karnataka, India
    PNS Prasad, CT Subbarayappa, A Sathish, V Ramamurthy
    International Journal of Plant & Soil Science 33 (7), 20-38 , 2021
    2021
    Citations: 22
  • Quantifying and Mapping of Major, Secondary and Micronutrient Status of Tomato Growing Soils in Kolar District, Karnataka Using GIS and GPS Approach
    PNS Prasad, CT Subbarayappa, V Ramamurthy, A Sathish
    International Journal of Plant & Soil Science 32 (14), 14-27 , 2020
    2020
    Citations: 8
  • Spatial distribution and mapping of available micro nutrient status in relation to soil properties of tomato grown soils of Chikkaballapura District, Karnataka
    PNS Prasad, CT Subbarayappa, A Sathish
    International Journal of Plant & Soil Science 32 (10), 1-10 , 2020
    2020
    Citations: 8
  • Qualifying and mapping of major, secondary and micronutrient status of tomato growing soils in Kolar District, Karnataka using GIS and GPS approach
    PN Siva Prasad, CT Subbarayappa, V Ramamurthy, A Sathish
    Int J Plant Soil Sci 32 (14), 14-27 , 2020
    2020
    Citations: 2

MOST CITED SCHOLAR PUBLICATIONS

  • Liquid Nano-Urea: An Emerging Nano Fertilizer Substitute for Conventional Urea
    NRNAK K. Lakshman, M. Chandrakala, P. N. Siva Prasad, G. Prasad Babu, T ...
    Chronicle of Bioresource Management 2022 6 (2), 54-59 , 2022
    2022
    Citations: 31
  • Sustainable management and restoration of the fertility of damaged soils
    BR Goud, M Raghavendra, PS Prasad, V Hatti, HM Halli, GV Nayaka, ...
    Agriculture Issues and Policies 113 , 2022
    2022
    Citations: 26
  • Impact of Zinc Fertilization on Tomato (Solanum lycopersicum L.) Yield, Zinc use Efficiency, Growth and Quality Parameters in Eastern Dry Zone (EDZ) Soils of Karnataka, India
    PNS Prasad, CT Subbarayappa, A Sathish, V Ramamurthy
    International Journal of Plant & Soil Science 33 (7), 20-38 , 2021
    2021
    Citations: 22
  • Development of critical limits for different crops grown in different soils and its use in optimizing fertilizer rates
    PNS Prasad, CT Subbarayappa, MR Reddy, HM Meena
    Int. J. Curr. Microbiol. Appl. Sci 6 (6), 241-249 , 2017
    2017
    Citations: 19
  • Quantifying and Mapping of Major, Secondary and Micronutrient Status of Tomato Growing Soils in Kolar District, Karnataka Using GIS and GPS Approach
    PNS Prasad, CT Subbarayappa, V Ramamurthy, A Sathish
    International Journal of Plant & Soil Science 32 (14), 14-27 , 2020
    2020
    Citations: 8
  • Spatial distribution and mapping of available micro nutrient status in relation to soil properties of tomato grown soils of Chikkaballapura District, Karnataka
    PNS Prasad, CT Subbarayappa, A Sathish
    International Journal of Plant & Soil Science 32 (10), 1-10 , 2020
    2020
    Citations: 8
  • Effect of soil application of zinc on growth and quality of Tomato (Solanum lycopersicon L.) in different zinc fertility soils of eastern dry zone (Zone V) of Karnataka
    PNS Prasad, CT Subbarayappa
    Journal of Pharmacognosy and Phytochemistry 7 (4), 298-302 , 2018
    2018
    Citations: 7
  • Comparison of extraction methods to assess potassium availability for rice growing soils of canal ayacut of Kurnool district.
    PNS Prasad, P Kavitha, MS Chari, MS Reddy
    2016
    Citations: 7
  • Nano-fertilizers for sustainable agriculture
    D Abhigna, K Lakshman, PNS Prasad
    Chronicle Of Bioresource Management 5 (2), 037-040 , 2021
    2021
    Citations: 6
  • Studies on available potassium in rice (Oryza sativa L.) growing soils of canal ayacut in kurnool district
    PN Siva Prasad
    Acharya NG Ranga Agricultural University, Guntur , 2014
    2014
    Citations: 6
  • Assessment of Available Major and Micronutrient Status of Soils under Varied Cropping Systems of N.T.R district, Andhra Pradesh
    IVRMR P.N. Siva Prasad, P. Venkata Subbaiah, N. Rajasekhar
    Indian Journal of Ecology 50 (2), 345-350 , 2023
    2023
    Citations: 5
  • Impact of Agrometerology Advisory Services (AAS) for Assessment of Cotton Cropping System in NTR District of Andhra Pradesh, India
    RN Rajnarashimha N, Venkata Subbaiah, Venkata Reddy I, Siva Prasad PN
    International Journal of Environment and Climate Change, 13 (7), 495-502 , 2023
    2023
    Citations: 4
  • Establishing and validation of new critical limits of zinc for Tomato (Solanum lycopersicum L.) in Alfisols of Karnataka, India
    PNS Prasad, C Thimmappa Subbarayappa, A Sathish, V Ramamurthy
    Journal of Plant Nutrition 45 (11), 1624-1641 , 2022
    2022
    Citations: 4
  • Assessment of nutrient status of rice growing soils of canal ayacut soils of Kurnool district (AP), India.
    PNS Prasad, P Kavitha, NKK Yadav
    2015
    Citations: 4
  • Study on the incidence of sucking pests and pink bollworm in cotton
    N Rajasekhar, PV Subbaiah, PN Prasad, MR Narasimha, IV Reddy
    Journal of Experimental Agriculture International 45 (7), 18-25 , 2023
    2023
    Citations: 3
  • Evaluation of Micronutrient Status and Response of Tomato (Solanum Lycopericum L.) to Graded Levels of Zinc Application in Easters Dry Zone of Karnataka
    PNS Prasad
    University of Agricultural Sciences, GKVK , 2018
    2018
    Citations: 3
  • Monitoring Biotic and Abiotic Stress in Crop Plants through Remote Sensing
    SPPNK Lakshman
    Chronicle of Bioresource Management 2021, 5(2):033-036 5 (2), 33-36 , 2021
    2021
    Citations: 2
  • Qualifying and mapping of major, secondary and micronutrient status of tomato growing soils in Kolar District, Karnataka using GIS and GPS approach
    PN Siva Prasad, CT Subbarayappa, V Ramamurthy, A Sathish
    Int J Plant Soil Sci 32 (14), 14-27 , 2020
    2020
    Citations: 2
  • Study of dynamics of electro-chemical properties of submerged soils
    GSYANDHCP M. RAGHAVENDRAREDDY, LOKESH PATIL, P. N. SIVA PRASAD
    An Asian Journal of Soil Science 11 (1), 74-77 , 2016
    2016
    Citations: 2
  • Impact of Closer Spacing on Sucking Pests and Pink Bollworm Infestation in Cotton Crop
    N Rajasekhar, KA Raju, K Lakshmikala, PNS Prasad, TJ Reddya, ...
    Journal of Experimental Agriculture International 47 (7), 343-348 , 2025
    2025
    Citations: 1