Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Influences of Traditional Mulches on Flower Production and Petal Coloration of Dianthus (dianthus Chinensis Lin.)

M. H. Kabir
Department of Horticulture and Postharvest Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

A. H. M. Solaiman
Department of Horticulture and Postharvest Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

N. Das
Department of Horticulture and Postharvest Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

A. F. M. J. Uddin
Department of Horticulture and Postharvest Technology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted to understand the effect of traditional mulches on plant growth, flower induction, petal coloration and yield of Dianthus chinensis at Horticultural Farm, Sher-e-Bangla Agricultural University, Dhaka. Four mulch treatments C, control; SM, straw mulch; WHM, water hyacinth mulch; BPM, black plastic mulch were examined under this study. Black plastic mulch showed better performance than other treatments. Highest plant and flower growth, early flowering and maximum number of flowers were observed from black plastic mulch treatment followed by water hyacinth mulch and straw mulch respectively whereas the lowest was observed from control. Deep colored flower was produced from black plastic mulch treated plants and light colored flower from control.

Keywords: Coloration, Dianthus chinensis, Flower production, Mulch

Location: Horticultural Farm, Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-10-2005

End Date: 00-02-2006

Program Area: Crop-Soil-Water Management

Commodity: Flower

Objectives:

To know the affect of traditional mulches on growth, flower production and quality of dianthus.

Methodology:

This field research was conducted at Horticultural Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from October 2005 to February 2006. Soil of the experimental plot was clay type belonging to Modhupur Tract region (UNDP, 1988). Dianthus cultivar’s ‘Heritage Rose Eye’ was used in the research work and seeds were collected from a renowned seed store, Dhaka, Bangladesh. There were four (4) treatments viz. C, control (no mulch); SM, straw mulch; WHM, water hyacinth mulch and BPM, black plastic mulch. Experiment was laid out in a Randomized Complete Block Design with three (3) replications. Plant spacing was 30 × 20 cm and each plot size was 1.2 m × 1.2 m. Seedlings were produced in the seedbed and seedlings of 25 days old were transplanted in the main field at 30 November 2005. pH of the experimental soil was 5.8 to 6.8. Average day and night temperature were 18^oC and 10^oC respectively. Land was opened on 15 days before transplanting. Recommended doses of manures and fertilizers (Cowdung 10 kg/m2, TSP 20g/m2, MP 20g/m2) were applied in the experimental plots and mixed with plot soil. Cowdung was applied during land preparation. All of the TSP and MP were applied during transplanting. Seedlings were transplanted in the afternoon and were protected from sun providing leaf sheath of banana. Mulches of water hyacinth (7 cm) and rice straw (7 cm) were applied immediately after transplanting while polythene sheet was spreaded over the plot immediately before transplanting of seedling. Gap filling, weeding, and pesticide application were done when necessary. Data on plant height, number of leaf per plant, days to first bud formation, bud diameter, bud growth at every alternate day, color measurement of full bloom petals were collected. Petal color at three different locations of the top center of outer epidermis was measured using a handy-type tristimulus colorimeter, NR-3000 (NIPPON Denshoku), followed by L* (lightness), a*, and b* (two Cartesian co-ordinates), based on the CIELab scale with the standard CIE observer (10° visual field) and the CIE standard illuminant D65 (CIE, 1986 and McGuire, 1992). Beams whose effective axes were at the angle of 45 ± 2° from the normal to the specimen surface in illuminated petal. Metric chroma, C* and hue angle, hab, were calculated according to the following equations: C* = (a*2+b*2)0.5 and ab = tang−1(b*/a*). Collected data were statistically analyzed using MSTATC computer package program. Means for all the treatments were calculated and analysis of variance for all the characters was performed by F- variance test. Significant differences among the pairs of treatment means were evaluated by Least Significance Difference Test (LSD) (Gomez and Gomez, 1984).

Source of Information: Progress. Agric. 18(2) : 35-40, 2007 ISSN 1017-8139

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Black plastic mulch showed better performance than other treatments. Highest plant and flower growth, early flowering and maximum number of flowers were observed from black plastic mulch treatment followed by water hyacinth mulch and straw mulch respectively whereas the lowest was observed from control. Deep colored flower was produced from black plastic mulch treated plants and light colored flower from control.The plastic mulches modified soil temperature where plants were grown. Soil temperatures modified by the black plastic mulches directly influenced observed differences in plant growth and total flower yield among various mulch treatments.

Knowledge Management: Journal