EF F ECT OF NITROGENOU S F ERTIL IZERS ON ORG ANIC MATTER F RACTION S AND SOIL QUALITY UN DER APPL E cv. Van ce De lic iou s

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dc.contributor.advisorSHARMA, UADAY
dc.contributor.authorTHAKUR, ONKAR
dc.date.accessioned2020-01-08T10:28:24Z
dc.date.available2020-01-08T10:28:24Z
dc.date.issued2019-11
dc.description.abstractABSTRACT The present investigation entitled “Effect of nitrogenous fertilizers on organic matter fractions and soil quality under apple cv. Vance Delicious” was conducted at Regional Horticultural Research and Training Station, Bajaura, Seobag (HP) during 2018-2019. There were 14 treatments comprising of different fertilizers and their combinations, replicated thrice in a Randomised Block Design under field conditions. Treatment details were as follows: T1 (control), T2 (urea), T3 (calcium nitrate), T4 (calcium cyanamide), T5 (urea + liming in October)), T6 (urea + liming in March), T7 (12:32:16 + urea), T8 (12:32:16 + calcium nitrate), T9 (12:32:16 + calcium cyanamide), T10 (15:15:15 + urea), T11 (15:15:15 + calcium nitrate), T12 (15:15:15 + calcium cyanamide), T13 (50% urea through soil application + 50% through foliar application and T14 calcium nitrate + urea + liming. Different nitrogenous fertilizers were applied on N equivalence basis as perthe standard recommendations. Soil sampling after two years of continuous application was done at two depths viz., 0-15 cm and 15-30 cm. The lowest value for bulk density for 0-15 cm depth was recorded in T14 (1.01 g cm-3), while that for the 15-30 depth cm was found under thesame treatment i.e. T14 (1.09 g cm-3). The maximum particle density for 0-15 cm depth (2.64 g cm-3) and porosity (61.25%) were also recorded with T14 comprising of the application of calcium nitrate + urea + liming. The soil pH for 0-15 cm depth was recorded minimum with the application of T8, whereas, for 15-30 cm depth it was recorded minimum with T10. The highest organic carbon for the upper depth was recorded under treatment T7 (15.93 g kg-1), while for the 15-30 cm depth the highest organic carbon content was recorded under treatment T8 (14.40 g kg-1). The maximum labile carbon content for the 0-15 cm soil depth was found under the application of treatment T13 with a value of 0.44 g kg-1, whereas, for the 15-30 cm soil depth the maximum labile carbon content was observed under the application of treatment T3 (0.32 g kg-1). Maximum N (386.77 kg ha-1) and P (88.11 kg ha-1) were observed under T6, while K was maximum (538.35 kg ha-1) was under T14. The highest total microbial count for 0-15 cm soil depth and 15-30 cm soil depth was recorded with the application of same treatment i.e. T14with the values of 139.75 × 105 cfu g-1 soil and 128.41 × 105 cfu g-1 soil, respectively. The highest value of microbial biomass carbon for the 0-15 cm and for 15-30 cm were also observed maximum under the same treatment i.e. T6 with values of 801.85 µg g-1 soil and 674.99 µg g-1 soil, respectively. The highest value of dehydrogenase enzyme activity for the 0-15 cm soil depth was observed under the T6 (58.40 µg TPF g-1 soil 24 hr-1), whereas, for the 15-30 cm soil depth the highest value of dehydrogenase enzyme activity was observed under T12 (47.67 µg TPF g-1 soil 24 hr-1). The light fraction organic matter (399.35 g C kg-1) and particulate organic matter (49.03 g kg-1) were recorded maximum under treatment T6 for the 0-15 cm soil depth. The fruit yield was found to be maximum (75.32 kg tree-1) was obtained with the treatment T14. The soil quality index was also recorded highest with the application of treatment T6 having a value of 4.260.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810139992
dc.keywordsnitrogenous, fertilizers,organic matter fractions,soil,quality appleen_US
dc.language.isoenen_US
dc.pages65+vien_US
dc.publisherUHF,NAUNIen_US
dc.subSoil Science and Water Managementen_US
dc.subjectnullen_US
dc.themenitrogenous, fertilizers,organic matter fractions,soil,quality appleen_US
dc.these.typeM.Scen_US
dc.titleEF F ECT OF NITROGENOU S F ERTIL IZERS ON ORG ANIC MATTER F RACTION S AND SOIL QUALITY UN DER APPL E cv. Van ce De lic iou sen_US
dc.typeThesisen_US
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