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Subject: Horticulture × Author: Sangma, Trudy Tengse A. × End date: 2019 × Start date: 2010 ×
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    ThesisItemOpen Access
    HEAT UNIT INDEXING OF GARDEN PEA IN RELATION TO CLIMATE SHIFT AND NUTRIENT MANAGEMENT
    (2019-07) Sangma, Trudy Tengse A.; Saikia, Luchon
    An experiment was conducted consecutively during 2016-17 and 2017-18 in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat to study the “Heat unit indexing of garden pea in relation to climate shift and nutrient management”. The experiment consist three treatments viz., variety (main), fertility management level (sub) and sowing date (sub-sub) laid out in split plot design with random allocation and replicated thrice. The main treatment consisted Arkel(V1), A1(V2), DS-10(V3) and GS-10(V4); sub treatment was comprised of 5t FYM, 10-46-0 kgha-1 (F1), 10t FYM, 10-46-10 kgha-1 (F2), 10t FYM, 20-46-20 kgha-1 (F3) and 10t FYM, 30-46-30 kgha-1 (F4) and sub-sub treatment was dates of sowing: 10th October (S1), 24th October (S2), 7th November (S3), 21st November (S4), 5th December (S5) and 20th December (S6). Growth, yield attributes, soil related and quality characters viz., plant height(cm), days to 50% flowering, pod plant-1, pod length (cm), pod diameter (cm), seed pod-1, shelling (%), pod yield (tha-1), duration (days), growing degree days, root nodules plant-1, total plant nitrogen (%), total plant phosphorus(%), total potash (%), TSS (0 Brix), crude protein (%), soil organic carbon (%), soil available nitrogen (kgha-1), soil available phosphorus (kgha-1), soil available potash (kgha-1) and soil pH have responded significantly due to treatments as well as their interactions, except pH. Variety evidently produced significant effect on growing degree days (GDD) and results showed V4>V3>V2>V1 with requirement of 955, 948, 933 and 833 GDD for 2016-17 and similarly 958, 949, 942 and 825 GDD. The maximum duration was reported as 76.00days in V4F with (1,2,3,4) and S( with 3,4,5). Duration was closely associated with degree days by sowing date had indicated significant duration among varieties, least with V1(58.73days), to maximum in V4(72.30days). Fertility level had a range of maturity at 68.08 to 68.29days. Sowing dates showed significance as 911(S1), 915(S2), 915(S3), 915(S4), 916(S5) and 918(S6) during 2016-17 and the GDD was found significant as S1
  • Thumbnail Image
    ThesisItemOpen Access
    HEAT UNIT INDEXING OF GARDEN PEA IN RELATION TO CLIMATE SHIFT AND NUTRIENT MANAGEMENT
    (2019-07) Sangma, Trudy Tengse A.; Saikia, Luchon
    An experiment was conducted consecutively during 2016-17 and 2017-18 in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat to study the “Heat unit indexing of garden pea in relation to climate shift and nutrient management”. The experiment consist three treatments viz., variety (main), fertility management level (sub) and sowing date (sub-sub) laid out in split plot design with random allocation and replicated thrice. The main treatment consisted Arkel(V1), A1(V2), DS-10(V3) and GS-10(V4); sub treatment was comprised of 5t FYM, 10-46-0 kgha-1 (F1), 10t FYM, 10-46-10 kgha-1 (F2), 10t FYM, 20-46-20 kgha-1 (F3) and 10t FYM, 30-46-30 kgha-1 (F4) and sub-sub treatment was dates of sowing: 10th October (S1), 24th October (S2), 7th November (S3), 21st November (S4), 5th December (S5) and 20th December (S6). Growth, yield attributes, soil related and quality characters viz., plant height(cm), days to 50% flowering, pod plant-1, pod length (cm), pod diameter (cm), seed pod-1, shelling (%), pod yield (tha-1), duration (days), growing degree days, root nodules plant-1, total plant nitrogen (%), total plant phosphorus(%), total potash (%), TSS (0 Brix), crude protein (%), soil organic carbon (%), soil available nitrogen (kgha-1), soil available phosphorus (kgha-1), soil available potash (kgha-1) and soil pH have responded significantly due to treatments as well as their interactions, except pH. Variety evidently produced significant effect on growing degree days (GDD) and results showed V4>V3>V2>V1 with requirement of 955, 948, 933 and 833 GDD for 2016-17 and similarly 958, 949, 942 and 825 GDD. The maximum duration was reported as 76.00days in V4F with (1,2,3,4) and S( with 3,4,5). Duration was closely associated with degree days by sowing date had indicated significant duration among varieties, least with V1(58.73days), to maximum in V4(72.30days). Fertility level had a range of maturity at 68.08 to 68.29days. Sowing dates showed significance as 911(S1), 915(S2), 915(S3), 915(S4), 916(S5) and 918(S6) during 2016-17 and the GDD was found significant as S1