Nutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry system

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dc.contributor.advisorNavneet Kaur
dc.contributor.authorRamandeep Kaur
dc.date.accessioned2021-07-27T10:04:03Z
dc.date.available2021-07-27T10:04:03Z
dc.date.issued2021
dc.description.abstractThe present study entitled “Nutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry system” was conducted at research area of the Department of Forestry & Natural Resources, Punjab Agricultural University, Ludhiana and Regional Research Station, Bathinda during the rabi season 2019-20. The experiments were conducted in Randomised Complete Block Design with sowing of three varieties (Giriraj, RLC 3 and PBR 357) and six nutrient levels ; Control (no nutrients), Zinc (25 kg ha-1), 75% of recommended dose of fertilizers (RDF), 100% RDF (N :100 kg ha-1 & P2O5 : 30 kg ha-1), 125% RDF and 150% RDF. Zn (25 kg ha-1) was also applied along with different nutrient levels. The soil of the experimental site was loamy sand in texture, low in available N and medium in available K at both the locations. Available P was medium at Ludhiana and high at Bathinda; organic carbon content was medium at Ludhiana and low at Bathinda. Tree parameters such as height (14.2 m), diameter at breast height (16.6 cm) and crown spread (16.7 m2) was higher in 4-year-old poplar plantation at Ludhiana than 3-year-old poplar plantation at Bathinda. Leaf area index of poplar started increasing from mid-February and reached maximum in mid-April. The average temperature was higher in open (23.8ºC) as compared to poplar plantation (22.1ºC) whereas relative humidity followed opposite trend of temperature. Under poplar plantation, PAR started increasing from end-January till first fortnight of April. Application of 150% RDF significantly increased plant height, dry matter accumulation from 60 DAS up to maturity, secondary branches per plant, siliquae per plant, siliqua length, seeds per siliqua, seed yield, stover yield and oil yield under poplar. PBR 357 and RLC 3 varieties recorded the highest seed yield (1293 and 1375 kg ha-1) and oil content (42.2 and 41.9%) at Ludhiana and Bathinda, respectively. RLC 3 variety recorded higher oil content but oil yield was significantly higher in PBR 357 due to its higher seed yield. PBR 357 variety applied with 150% RDF gave highest seed yield (1682 and 1800 kg ha-1 at Ludhiana and Bathinda respectively) than other treatment combinations. Overall reduction in seed yield was 17.2 and 20.4% under 3-and 4-year-old poplar plantation as compared to open at Bathinda and Ludhiana, respectively.en_US
dc.identifier.citationRamandeep Kaur (2021). Nutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry system (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810170916
dc.keywordsAgroforestry, raya varieties, nutrient levels, poplar, yield attributes, yielden_US
dc.language.isoEnglishen_US
dc.pages82en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemNutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry systemen_US
dc.subAgronomyen_US
dc.themeNutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry systemen_US
dc.these.typeM.Scen_US
dc.titleNutrient management of raya (Brassica juncea) varieties under poplar (Populus deltoides) based agroforestry systemen_US
dc.typeThesisen_US
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