Journal of Horticultural Sciences

S. A. Wani ¹, M. A. A. Siddique ¹, F. U. Khan ¹, Z. A. Qadri ¹, F. A. Khan ², Q. A. H. Dar ¹, S. Ali ¹

Affiliations
1 Division of Floriculture, Medicinal and Aromatic Plants, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus-191121, Srinagar (J&K), IN
2 Division of Post Harvest Technology, Medicinal and Aromatic Plants, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus-191121, Srinagar (J&K), IN

Abstract

Studies were conducted on cut Asiatic Lilium cv. Elite to assess the effectiveness of various floral preservatives as pulsing treatments for delaying senescence and prolonging vase life. Uniform spikes of lilium at bud colour break stage were brought to the laboratory in the morning and placed in 8 different pulsing solutions consisting of sucrose (Suc) 5%, aluminium sulphate (AS) 400 ppm, silver thio-sulphate (STS) 2.0 mM and citric acid (CA) 1000 ppm alone and in combination with sucrose. Distilled water without any chemical served as the control. Among individual treatments, STS 2.0 mM maintained better water relations and flower quality compared to others. STS also showed superiority over other treatments when combined with Suc 5% by providing largest flower size (16.74 cm) with maximum vase life (17.29 days) owing to most-favourable water relations parameters.

Keywords

Lilium, Pulsing Treatment, Vase Life.

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F. U. Khan ¹, A. Q. Jhon ¹, F. A. Khan ², M. M. Mir ¹

Affiliations
1 Division of Floriculture, Medicinal and Aromatic Plants, S.K. University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar-191121 (JandK), IN
2 Plant Physiology Section, Division of Post Harvest Technology, S.K. University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar-191121 (JandK), IN

Abstract

Healthy and uniform bulbs of tulip cv. 'Apeldoorn' were planted in two consecutive growing seasons under polyhouse conditions in FRBD design to study the effect of nutrient management on growth, flowering and bulb production in tulip in the Kashmir valley. Experimental treatments comprised of three levels of nitrogen (0,75 and 150 kg ha^-1) and two levels of phosphorus (0 and 50 kg ha^-1), potassium (0 and 50 kg/ha) and zinc (0 and 5 kg ha^-1). Except for bulb survival, nitrogen @ 75 kg ha^-1 significantly improved all the parameters. However, further increase in dose of nitrogen (150 kg ha^-1) influenced only a few parameters like scape length, wrapper leaf area, vase life and bulblet weight per plant. Application of phosphorus, potassium and zinc also resulted in better growth, flower quality and bulb production. Application of different nutrients caused increased concentration of nutrients in leaf tissue, which resulted in better performance of the plant. Combined application of N, P, K and Zn @ 75, 50, 50 and 5 kg ha^-1, respectively, was found to be the most suitable dose for obtaining better growth, quality flower and bulb production.

Keywords

Tulip, Nutrition, Flowering, Bulb Production, Polyhouse.

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F. A. Khan ¹, A. H. Rather ¹, N. A. Qazi ¹, M. Y. Bhat ², M. S. Darzi ¹, M. A. Beigh ¹, Imtiyaz Ahmad ¹

Affiliations
1 Plant Physiology Section, Division of Post Harvest Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar-191121, IN
2 Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar-191121, IN

Abstract

An experiment was conducted to study the effect of modified atmosphere packaging (MAP) on the quality of 'Red Delicious' and 'Golden Delicious' apples. Freshly harvested fruits were wiped clean and (25 μm thick) with varying number of perforations and stored in cardboard boxes at ambient temperature. 'Golden Delicious' showed higher incidence of bitter pit as compared to 'Red Delicious' apples. MAP proved effective in controlling the bitter pit disorder and in maintenance of quality. The least incidence of bitter pit in 'Golden Delicious' was recorded with T₄ (30 x 2 mm perforation) and T₃ (20 x 2 mm) treatment in 'Red Delicious' apples. However, MAP retained more freshness in 'Golden Delicious' than in 'Red Delicious'.

Keywords

Apple, Modified Atmosphere Packaging, Bitter Pit, Quality.

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F. U. Khan ¹, F. A. Malik ¹, F. A. Khan ², Nelofar ¹

Affiliations
1 Division of Floriculture, Medicinal and Aromatic Plants, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Campus, Srinagar-191121, IN
2 Plant Physiology Section, Division of Post Harvest Technology, IN

Abstract

An experiment on effect of pre-harvest application of GA₃ and PP₃₃₃ as bulb dip and foliar spray on quality and vase life of cut tulip cv. Cassini was carried out. Healthy scapes of uniform size were cut in a slanting manner at bud colour break stage and placed in conical flasks containing distilled water for vase life studies. Bulb dip in GA₃ (100 ppm) followed by foliar spray of GA₃ (100 ppm) significantly improved overall water uptake, prevented water loss and resulted in maximum water balance. The treatment also exhibited the maximum flower diameter (7.40 cm), scape length (16.26 cm) and vase life (9.33 days). However, the lowest water loss to water uptake ratio was recorded with bulb dip plus foliar spray with 200 ppm GA₃. Data indicated that GA₃ (100 ppm) as bulb dip plus foliar spray proved instrumental in maintaining the quality and vase life of cut tulip as compared to other treatments.

Keywords

Cut Tulip, Quality, Vase Life, Gibberellic Acid, Paclobutrazol.

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