Ashish Kumar

Jawaharlal Nehru Krishi Vishwa Vidyalaya

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Co-Authors

R. Shiv Ramakrishnan

Jawaharlal Nehru Krishi Vishwa Vidyalaya

R. C. Sharma

Jawaharlal Nehru Krishi Vishwa Vidyalaya

Rajeev K. Varshney

Murdoch University

Stuti Sharma

Jawaharlal Nehru Krishi Vishwa Vidyalaya

A.K. Jain

Veer Kunwar Singh University

T. K. Sahu

Chhattisgarh Swami Vivekanand Technical University

Andrew Farmer

National Center for Genome Resources

Douglas R. Cook

University of California, Davis

Sandeep Jain

Punjab Agricultural University

S. K. Jindal

Punjab Agricultural University

Cooperative Institutions

Jawaharlal Nehru Krishi Vishwa Vidyalaya

Indian Council of Agricultural Research

Indian Agricultural Research Institute

International Crops Research Institute for the Semi-Arid Tropics

Chaudhary Charan Singh Haryana Agricultural University

Banaras Hindu University

Punjab Agricultural University

Council of Scientific and Industrial Research

Central Institute of Medicinal and Aromatic Plants

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Contributing traits for nitrogen use efficiency in selected wheat genotypes and corollary between screening methodologies

Acta Agriculturae Scandinavica Section B - Soil & Plant Science (2019)

Rumesh Ranjan Rajbir Yadav Ashish Kumar Swarupa Nanda Mandal

Nitrogen uptake being part of nitrogen use efficiency (NUE) is largely decided by root traits. Root traits variability has hardly been explored by breeders mainly because of difficulties in scoring. The hydroponic system requiring lesser space for precise phenotyping of large numbers of genotypes independently of the growing season can be a suitable alternative. However, the effectiveness of hydroponic screening methods needs to be verified under the soil condition of the field or pot. In the present study, root traits and NUE were investigated in 19 genotypes under two conditions (hydroponic and pipe filled with soil). Both environments revealed large variability for root traits and NUE under high and low N conditions establishing the absence of any direct selection for these traits in the past. Under both sets of experimentation, NUpE was largely responsible for improved nitrogen efficiency mainly because of higher root biomass. The significant association between the two screening methods i.e. hydroponic and pot filled with soil under both low and high N condition support large scale screening for root traits under hydroponic condition.

Corollary

Root (linguistics)

Growing season

10.1080/09064710.2019.1623302

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Citations (16)

Role of Computational Biology in Sustainable Development of Agriculture

Springer eBooks (2021)

R. C. Sharma Ashish Kumar R. Shiv Ramakrishnan

Identification

10.1007/978-981-33-4791-5_3

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Knowledge, Attitudes and Practices of the Farmers towards Antibiotic Usage in Layer Birds in Haryana, India: A Cross-sectional Survey

Journal of Scientific Research and Reports (2024)

Khushbu Khushbu Pallavi Moudgil Vijay J. Jadhav Deepak Soni Yogesh C. Bangar

The antibiotic usage practices of poultry farmers have drastically changed over decades in most of the developing countries like India. The present study carried out in 100 layer farms of Haryana, India from March, 2022 to November, 2022 to assess the knowledge, attitudes and practices of farmers towards antibiotic usage in layer birds using structured questionnaire. The findings suggested that 39 (39%) farmers had correct knowledge, 67 (67%) farmers had positive attitudes and 64 (64%) farmers followed good practices towards antibiotic usage in layer farms. The statistical analysis revealed farmers owning small size farms had 0.12 times lower odds (p<0.01, OR=0.12, 95% CI=0.03-0.55) of positive attitudes than farmers owning large size farms. Further, the farmers who used self-made feeds at their farms had 5.08 times lower odds (p<0.01, OR=5.08, 95% CI=1.49-17.25) of positive attitudes towards antibiotic usage as compared to commercial feed users. An interesting finding of the survey was that farmers who had education level up to 12th grade showed 5.65 times higher odds (p<0.01, OR=5.65, 95% CI=1.52-20.93) of having better knowledge of antibiotic usage than graduate farmers. A high proportion of farmers even used antibiotics without proper consultation with the veterinarian. Thus, the study suggests that farmers owning small sized farms and using self-made feed had positive attitude towards antibiotic usage. Additionally, farmers who had education up to 12th grade showed better knowledge of antibiotic usage. There is a significant gap between farmer's knowledge and attitudes. Lack of strict legislation, restrictions on antibiotic use and farmer's self-prescription of antibiotics to the flock are highly accountable for the increasing antibiotic resistance and production of residues contaminated eggs which is a major threat to public health globally.

Cross-sectional study

10.9734/jsrr/2024/v30i92413

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Multivariate statistical approaches to enhance biochemical traits in mungbean (Vigna radiata L. Wilczek)

International Journal of Advanced Biochemistry Research (2024)

Atul Kumar Pachauri Govind Gupta Ashish Kumar Deepak Kher

Radiata

10.33545/26174693.2024.v8.i11k.2981

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Present status and future directions for management of root lesion nematode (Pratylenchus thornei) in chickpea

Environment Conservation Journal (2022)

Ashish Kumar Vedant Gautam Rameshwar Tiwari Stuti Sharma Jayant Bhatt

Chickpea is a popular legume crop in Asia and Africa's semi-arid regions. Crop production gains, on the other hand, have been modest, owing to biotic and abiotic stressors. Among the different biotic stresses, nematodes portray serious threat to chickpea production and colossal losses have been reported due to stress-free infection by other pathogens on infection with root lesion nematode (RLN). The worldwide distribution of two major species of RLN namely P. thornei and P. neglectus made them a focus research area especially on management aspect. In dryland farming areas of southeastern Australia, the P. thornei alone can cause yield losses of up to 40% in cereals and legumes. Despite the fact that chickpea breeders have been working persistently to generate superior chickpea varieties with increased resilience or tolerance to biotic and abiotic challenges, contemporary biotechnology technologies can help to speed up this process. To incorporate these tools and/or accelerate breeding programmes, identification of RLN resistant source with its genetic factor is first step in developing improved cultivars. However, study of resistance screening methods for chickpea against RLN is limited and standardization of different factors for development of a stable screening methodology distinguishing various levels of resistance is the need of the hour in RLN research.

10.36953/ecj.0211204.2337

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Effect of different chemicals and different doses on vase life of cut rose CV. “first Red” and Grand Gala

Annals of Horticulture (2016)

Shailendra Kumar Singh Amit Kumar Ashish Kumar

Vase life

Rose (mathematics)

Cut flowers

10.5958/0976-4623.2016.00043.8

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Variability in Sclerotinia sclerotiorum of mustard in northern region of M.P. (India)

International Journal of Chemical Studies (2018)

OP Bharti RK Pandya RK Singh JC Gupta Ashish Kumar

Stem rot incited by Sclerotinia sclerotiorum (Lib.) de Bary is one of the drastic disease of mustard and it causes quality and quantity losses in mustard. The five isolates of S. sclerotiorum from different geographical locations of northern region of Madhya Pradesh were collected and compared for their cultural and morphological characters under artificial culture conditions based on radial growth. Three degenerated primers of arbitrary reverse transcription sequences produced 340 scorable amplicons through florescent labelled random amplified polymorphic DNA markers. Nucleotides range were designed for sizing DNA fragments in the 35-500 nucleotides range and provides 16 single-stranded labeled fragment. Out of these, 251 fractionated fragments were reported polymorphic. Hence, the present investigation confirmed the diversity among the different geographical isolates from five districts of northern region of Madhya Pradesh (India).

Sclerotinia Sclerotiorum

Sclerotinia

Amplicon

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Assessment of genetic variability, heritability and genetic advance in wheat (Triticum aestivum L. em. Thell) under salt affected soil

Deleted Journal (2021)

Avanish Kumar Virendra Bahadur Akhilesh Kumar Ravi Chaudhary Ashish Kumar

Analysis of variance for augmented design was carried out for eleven characters to test the significance of differences among various treatments. The variation due to blocks was highly significant for days to 50% flowering, flag leaf area, days to maturity, biological yield per plant, harvest index and 1000-grain weight however the differences among the blocks were not significant for remaining characters. The high estimates of phenotypic (PCV) and genotypic (GCV) coefficients of variation was observed in case of flag leaf area (PCV=31.81%, GCV=25.68%) followed by grain yield per plant (PCV=27.37, GCV=21.75). The highest estimate of heritability in broad sense was recorded by days to 50% flowering (84.00%) followed by test weight (78.99%), harvest index (75.88%). The highest value of genetic advance was shown by grain yield per plant (g) (35.60%). If the heritability estimates are high in a narrow sense, it means the character is largely governed by additive genes and selection for improvement of such character would be rewarding.

Test weight

Coefficient of variation

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Genetic analysis and marker validation for grain filling duration and grain growth rate under conservation agriculture in wheat (Triticum aestivum L. em. Thell.)

Ashish Kumar

Conservation Agriculture

Wheat grain

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Evaluation of finger millet genotypes for partial resistance to leaf blast caused by Pyricularia grisea

Electronic Journal of Plant Breeding (2016)

D. K. D. Gupta A.K. Jain Ashish Kumar

Blast of finger millet (ragi) caused by Pyricularia grisea is disastrous disease to limit the potential yield levels in the farmers field. The pathogen affects the crop at all growth stages and the most susceptible stage for leaf blast is seedling stage. Use of resistant cultivars for minimizing losses due to leaf blast at early stage of crop growth is a viable and economical alternative. In the present study, partial resistance to leaf blast in fourteen genotypes of finger millet was assessed under field conditions. None of the genotypes were highly resistant to leaf blast. However, two genotypes namely PR 10-30 and VL 368 were shown resistance. Seven genotypes namely VR 988, VL 353, VL 348, TNAU 1214, GPU 45, VL 369, KOPM 942 were found moderately resistant, three namely PPR 2773, KRI 007-01, VR 708 were susceptible and two namely TNAU 1226 and REC 69 were highly susceptible. The correlation coefficients between leaf blast severities (LBS) with different components of partial resistance of slow blasting were significant. Low value of coefficient of infection (CI), apparent infection rate (r), area under disease progress curve (AUDPC), lesion number (LN), lesion area (LA), lesion circumference (LC) and high value of incubation period (IP) were recorded in resistant genotypes of finger millet, whereas, higher values of CI, r, AUDPC, LN, LA, LC and low values of IP were recorded in highly susceptible genotypes. A significant positive correlation was found in leaf blast severity with CI (r=0.948*), r (r=0.829*), AUDPC (r=0.998*), LN (r=0.967*), LA (r=0.957*), LC (r=0.976*) whereas IP (r=-0.825*) was negatively correlated with blast resistance. PR 10-30 and VL 368 showed higher degree of partial resistance or slow blasting resistance against P. grisea infection on finger millet.

Pyricularia

10.5958/0975-928x.2016.00128.9

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