Response of Melia dubia and Dalbergia sissoo to sandy loam soil amended with water absorbent polymers

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dc.contributor.advisorDhakad, Ashok Kumar
dc.contributor.authorRajesh Kumar
dc.date.accessioned2024-01-04T09:27:01Z
dc.date.available2024-01-04T09:27:01Z
dc.date.issued2022
dc.description.abstractThe present study was carried out in the Department of Forestry & Natural Resources at Punjab Agricultural University, Ludhiana during the year 2021-22. To study the effect of water absorbant polymers application on the growth, biomass, elemental concentrations in leaves and leaf physiological parameters of Melia dubia and Dalbergia sissoo, the hydrogel was applied in powdered form before planting the seedlings in pits having 50×50×50 cm3 volume at concentrations of 0, 25, 30, 35, 40, 45 and 50 g/plant. Plant characteristics like plant height, collar diameter, leaf N, P, K, and physiological traits viz., chlorophyll, carotenoids, RWC, MSI and TSS were measured at 6 months or seasonal interval, while, CAI for height and diameter, crown length, crown height, root length, plant fresh and dry weight were at end of experiment (12 MAP). In Melia dubia, treatment T2 (30 gm/pit) was found best for growth and biomass parameters and lowest values was in control. However, in Dalbergia sissoo maximum readings of growth and biomass parameters were obtained in Treatment T3 (35 gm/pit) and minimum in control. The physiological parameters of Melia dubia such as N, K, RWC and MSI were recorded higher in T2 (30 gm/pit) while P was in T3 (35 gm/pit) treatment. Total carotenoid was recorded maximum for both T2 (30 gm/pit) and T3 (35 gm/pit). Chl-a, Chl-b and total chlorophyll were observed highest in T6 (50 gm/pit) and TSS was in T1 (25 gm/pit). The physiological parameters of Dalbergia sissoo did not show any definite pattern for most of the traits studied. The maximum value of N and MSI was observed in T4 (40 gm/pit), while P and K were in T2 (30 gm/pit). Chl-a, Chl-b, total chlorophyll and RWC were found maximum in T3 (30 gm/pit), total carotenoids in T6 (50 gm/pit) and TSS in T1 (25 gm/pit). Lowest values for all physiological parameters in both trees were recorded under control. The high heritability was recorded in root length, plant fresh, dry weight and few physiological traits for both Melia dubia and Dalbergia sissoo. Only growth and biomass traits showed significant positive correlation in both plant species.
dc.identifier.citationRajesh Kumar (2022). Response of Melia dubia and Dalbergia sissoo to sandy loam soil amended with water absorbent polymers (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810205621
dc.keywordsMelia dubia
dc.keywordsDalbergia sissoo
dc.keywordshydrogel application
dc.keywordsgrowth
dc.keywordsleaf mineral
dc.keywordsphysiology.
dc.language.isoEnglish
dc.pages61
dc.publisherPunjab Agricultural University
dc.research.problemResponse of Melia dubia and Dalbergia sissoo to sandy loam soil amended with water absorbent polymers
dc.subForestry
dc.themeResponse of Melia dubia and Dalbergia sissoo to sandy loam soil amended with water absorbent polymers
dc.these.typeM.Sc
dc.titleResponse of Melia dubia and Dalbergia sissoo to sandy loam soil amended with water absorbent polymers
dc.typeThesis
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