Thumbnail Image

Theses

Browse

20211
Reset filters
Subject: Horticulture × Author: Baruah, Rubul × Start date: 2020 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    STANDARDIZATION OF PLANTING TIME, PLANTING METHODS AND PINCHING TECHNIQUES FOR SUMMER SEASON CUT FLOWER PRODUCTION OF Zinnia elegans IN ASSAM
    (2021) Baruah, Rubul; Hatibarua, Preeti
    he experiment entitled “Standardization of planting time, planting methods and pinching techniques for summer season cut flower production of Zinnia elegans in Assam” was undertaken in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat during the year 2020-2021 to find out the most suitable combination of planting time, method of planting and stage of pinching for Zinnia elegans cv. Dreamland Mix. The field experiment, laid out in Randomized Block Design with three replications, comprised of three planting dates viz., mid of January, February and March, two planting methods viz., direct sowing of seeds in the main field and transplanting of seedlings, and two stages of pinching viz., single pinching at 3 pairs of leaves and double pinching, viz., 1st pinching at 3 pairs of leaves stage followed by 2nd pinching of lateral shoots at 15 days after 1st pinching. The results revealed that all the treatments had a significant influence on growth and flowering of Zinnia elegans. Taller plants (24.55 cm and 33.73 cm at 30 DAT and at full bloom stage, respectively) with longer flower stalks (10.15 cm) were obtained from February transplanted seedlings subjected to single pinching. The number of branches per plant (16.44), number of flowers per plant (21.22), main stem diameter (1.35 cm), flower stalk diameter (7.22 mm) and total flowering duration (29.22 days) were higher with double pinching in February transplanted seedlings. From the present study, it may be inferred that for summer season cut flower production, Zinnia seedlings should be transplanted in the month of February followed by pinching at 3 pair leaves stage and 15 days after 1st pinching. A laboratory experiment was conducted in Department of Horticulture, AAU, Jorhat, to study the effect of various pulsing treatments on the post harvest life of Zinnia elegans cv. „Dreamland Mix‟ cut flowers. The post-harvest experiment was laid out in Completely Randomized Design with 9 treatments replicated thrice. The pulsing treatments were distilled water, sucrose solution (2%, 4%, 6%, 8%), 2% sucrose + 200ppm 8-HQS, 4% sucrose + 200 ppm 8-HQS, 6% sucrose + 200 ppm 8-HQS, and 8% sucrose + 200ppm 8-HQS. Pulsing with 4% sucrose + 200 ppm 8-HQS registered the maximum vase solution uptake (6.65 g/flower stem), higher fresh weight (91.33%), delayed petal discoloration (9.32 days), higher relative water content (60.7%) and the lowest bacterial count (4.86 CFU/ml) which finally led to longest vase life (10.5 days) of zinnia cut flowers.