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

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

Scopus Publications

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

SUITABILITY OF MULTINUTRIENT EXTRACTANTS FOR EVALUATION OF AVAILABLE SOIL ZINC FOR TOMATO NUTRITION OF KARNATAKA SOILS
PN Siva Prasad and CT Subbarayappa
Bangladesh Journals Online (JOL)
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)

Sustainable Management and Restoration of the Fertility of Damaged Soils

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, and Venkataramanappa Ramamurthy
Informa UK Limited
Abstract 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.

RECENT SCHOLAR PUBLICATIONS

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

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

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, NR Shekar
Asian Journal of Agricultural Extension, Economics & Sociology 41 (8), 187-193 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

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

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

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

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

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

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

Sustainable management and restoration of the fertility of damaged soils
BR Goud, M Raghavendra, PNS Prasad, V Hatti, HM Halli, GVV Nayaka, ...
Agriculture Issues and Policies 113 2022

Nano-fertilizers for Sustainable Agriculture
D Abhigna, K Lakshman, PNS Prasad
Chronicle of Bioresource Management 5 (Jun, 2), 037-040 2021

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

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

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

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

EVALUATION OF MICRONUTRIENT STATUS AND RESPONSE OF TOMATO (Solanum lycopersicum L.) TO GRADED LEVELS OF ZINC APPLICATION IN EASTERN DRY ZONE OF KARNATAKA
P POTHAGANI N SIVA
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU 2018

Quantity–intensity of potassium in rice growing soils of ayacut canal area of AP
PNS Prasad, P Kavitha, MS Chari, MS Reddy
IJCS 6 (3), 1323-1329 2018

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

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

MOST CITED SCHOLAR PUBLICATIONS

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
Citations: 14

Sustainable management and restoration of the fertility of damaged soils
BR Goud, M Raghavendra, PNS Prasad, V Hatti, HM Halli, GVV Nayaka, ...
Agriculture Issues and Policies 113 2022
Citations: 10

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
Citations: 6

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: 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: 3

Nano-fertilizers for Sustainable Agriculture
D Abhigna, K Lakshman, PNS Prasad
Chronicle of Bioresource Management 5 (Jun, 2), 037-040 2021
Citations: 1

Quantity–intensity of potassium in rice growing soils of ayacut canal area of AP
PNS Prasad, P Kavitha, MS Chari, MS Reddy
IJCS 6 (3), 1323-1329 2018
Citations: 1

Evaluation of extractants for determination of available and estimation of critical limits of zinc in tomato grown soils of eastern dry zone, Karnataka.
PNS Prasad, CT Subbarayappa
2018
Citations: 1

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
Citations: 1

Soil Properties and Forms of Potassium in Rice Growing Soils of Kurnool district.
PNS Prasad, P Kavitha, MS Chari, MS Reddy
The Andhra Agricultural Journal 62 (4), 841-846 2015
Citations: 1