An experiment was conducted to evaluate the efficacy of micronutrients on performance of Onion cv. Sukhsagar at Nadia, West Bengal during 2017-2018.The experiment was laid out in RBD having four replication with six treatments each having FYM @ 20 t ha -1 , viz. T 1 (RDF + soil application of Zinc Sulphate @ 10.0 kg ha -1 ), T 2 (RDF+ foliar application of Zinc Sulphate @ 0.5% at 30 & 45 days after planting (DAP), T 3 (RDF+ soil application of Borax @ 10.0 kg ha -1 ), T 4 (RDF+ foliar application of Borax @ 0.25% at 30 & 45 DAP), T 5 (RDF+ Foliar application of Micronutrient Mixture i.e. iron-2.5%, boron-0.5%,zinc -3%, copper -1%and manganese-1% @ 0.5% at 30 & 45 DAP) and T 6 (control). Highest plant height (63.72 cm), number of leaves/plant (12.71), polar diameter (58.62 mm), equatorial diameter (46.88 mm), average weight (61.72 g) of bulb, yield ha -1 (266.80 q) and highest % (29.82
Piper betle L., (family-Piperaceae) commonly known as the betel vine is an important medicinal and recreational plant in Southeast Asia. Betel vine is a dioecious, evergreen, perennial creeper with glossy heart shaped leaves. The present study was executed to identify the suitable integrated nitrogen management on leaf yield, quality and economy of betel vine (Piper betle L.) cultivars in new alluvial zone of West Bengal. The field experiment was conducted at Horticulture Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal during the 2017-2018. The experiment was laid out in Rnadomized Block Design, replicated thrice with eight treatments of integrated nitrogen management. It was noted that treatments in combination with inorganic and organic sources of nitrogen produced better results than the treatments with sole application of organic source of nitrogen. The application of nitrogen from mustard oil cake and urea in 1:1 ratio (T 1 ) produced maximum leaf yield/ vine (86.45 leaves/ vine/ year), projected leaf yield (63.22 lakhs/ ha/ year), chlorophyll content of the leaves (52.30 SPAD value), Ascorbic acid content of leaves (3.07 mg/100g), essential oil content ( 65.50 mg/100g) and ß Carotene content of leaves (7.28 mg/100g) in Simurali Deshi (V 1 ). Maximum fresh weight (261.25 g) and dry weight (42.01 g) of 100 leaves were found in Halisahar Sanchi (V₃). Among all the sources of nitrogen Mustard oil cake 50% + Urea 50% (T₁) showed highest benefit and cost ratio in all the three cultivars.
The present study was executed to identify the suitable integrated nitrogen management on vine growth and leaf characters of betel vine (Piper betle L.) cv. Simurali Deshi, Simurali Bhabna and Halisahar Sanchi in new alluvial zone of West Bengal. The experiment was laid out in Randomized Block Design, replicated thrice with eight treatments of integrated nitrogen management. It was noted that treatments in combination with inorganic and organic sources of nitrogen produced better results than the treatments with sole application of organic source of nitrogen. Application of 100% recommended dose of nitrogen (200 kg/ha) in the form of mustard oil cake and urea in equal proportion (1:1) recorded the highest vine growth (273.57 cm/ year) in Simurali Deshi, leaf petiole length (8.04 cm) in Simurali Bhabna, intermodal length (4.88 cm) in Halisahar Sanchi, number of branches per vine (11.43) in Simurali Bhabna, leaf length (12.24 cm) in Simurali Bhabna, leaf breadth (10.05 cm) in Halisahar Sanchi, leaf area (106.34 cm 2 ) in Halisahar followed by application of nitrogen from cow dung manure and urea in 1:1 ratio (T2).
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