Management of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes

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dc.contributor.advisorNavjot Singh
dc.contributor.authorVipanpreet Kaur
dc.date.accessioned2024-01-04T10:02:00Z
dc.date.available2024-01-04T10:02:00Z
dc.date.issued2023
dc.description.abstractThe present study "Management of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes" was conducted at Vegetable Research Farm, Punjab Agricultural University, Ludhiana, and Vegetable Research Farm, Khanaura (Hoshiarpur), during 2021-22. The experiment was conducted in a split-split plot design consisting of two genotypes i.e., Punjab Potato-102 and Kufri Pukhraj in main plots, and two sources of fertilizer i.e., Diammonium phosphate (DAP) and Single Superphosphate (SSP) in sub-plots, and four level of Phosphorus fertilizers i.e., 75, 100, 125 and 150 per cent of recommended dose of Phosphorus fertilizer in sub-sub plot, with three replications. Phosphorus fertilization with DAP @ 93.75 kg/ha (150% of the recommended dose) resulted in the highest emergence percentage, number of shoots, foliage weight, number of tubers per plant, and average tuber weight per plant. Highest tuber yield per hectare was recorded in case of both varieties after 70, 90, and 110 days of harvesting at both locations, with a higher proportion of B-grade tubers followed by C, A, and D grade during all the intervals of harvesting. The tuber quality traits, i.e., dry matter, reducing sugar, total phenols, free amino acids, and total glycoalkaloids improved with the application of a higher dose (150% of phosphorus) of DAP fertilizer. The concentration of nutrient (N, P, and K) uptake was observed to be highest in the root, shoot, and tuber with the application of a higher dose of DAP after 70, 90, and 110 days of harvesting at both locations and varieties. The concentration of nutrient uptake was highest at Khanaura (Hoshiarpur) as compared to Ludhiana. The study on effect of Nano-P fertilizer on tuber yield and quality was conducted at Vegetable Research Farm, Khanaura (Hoshiarpur). The experiment was conducted in a split plot design with two genotypes in main plots, and four levels of Phosphorus fertilizers i.e., 75 per cent, 75 per cent + foliar application of nano-P, 100 per cent, and 100 per cent + foliar application of nano-P in sub plot with three replications. Phosphorus fertilization with @ 62.5 kg/ha (100% of the recommended dose) + foliar application of nano-P resulted in the highest emergence percentage, number of shoots, foliage weight, number of tubers per plant, and average tuber weight per plant to achieve the highest tuber yield per hectare in the case of both varieties after 70, 90, and 110 days of harvesting. The proportion of B-grade tubers was highest followed by C, A, and D grade during all the intervals of harvesting. The tuber quality traits improved with the application of a higher dose (100% of phosphorus + nano-P) of P fertilizer. The concentration of nutrient (N, P, and K) uptake was also highest in the shoot and root with the application of a 100 per cent P + foliar application of nano-P after 70, 90, and 110 days of harvesting in both varieties. The outcome of the present study elucidates the importance of taking an integrated approach to improve the phosphorous utilization by potato crop. This in turn will be useful for management programmes aimed at improving phosphorus use efficiency by adjusting phosphorus fertilization according to location, method of application, cultivar, and source of fertilizers.
dc.identifier.citationVipanpreet Kaur (2023). Management of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810205640
dc.keywordsPotato yield
dc.keywordsgenotypes
dc.keywordsfoliar application
dc.keywordsnano-phosphorus
dc.language.isoEnglish
dc.pages89
dc.publisherPunjab Agricultural University
dc.research.problemManagement of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes
dc.subVegetable Science
dc.themeManagement of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes
dc.these.typeM.Sc
dc.titleManagement of phosphorus fertilization for tuber yield and quality of potato (Solanum tuberosum L.) genotypes
dc.typeThesis
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