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

Effect of Foliar Application of Chitosan on Growth and Yield in Okra

M. Monjurul Alam Mondal, PhD
Principal Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Dr. M. A. Malek
Principal Scientific Officer
Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

Pot and field experiments were conducted in two consecutive years at the pot-yard and field laboratory of Bangladesh Institute of Nuclear Agriculture, Mymensingh, during March to June 2010 and 2011, to investigate the effect of foliar application of Chitosan, a growth promoter, on morphological, growth, biochemical, yield attributes and fruit yield of okra cv. BARI dherosh-1. The experiment comprised five levels of Chitosan concentrations viz., 0 (control), 50, 75, 100 and 125 ppm. The Chitosan was sprayed three times of 25, 40 and 55 days after sowing. Results revealed that most of the morphological, growth, biochemical parameters and yield attributes were increased with increasing concentration of Chitosan till 125 ppm, resulted the highest fruit yield in okra. However, the increment of plant parameters as well as fruit yield was not significant from 100 ppm of Chitosan. Therefore, foliar application of Chitosan at 100 or 125 ppm may be used at early growth stage for getting maximum fruit yield in okra.

Keywords: Foliar spray; Chitosan; Okra; Growth; Fruit yield

Location: Pot yard and Experimental field of BINA, Mymensingh

Start Date: 19-03-2010

End Date: 30-06-2011

Program Area: Crop-Soil-Water Management

Commodity: Okra

Objectives:

To study the effect of Chitosan on growth, morphological features, yield attributes and yield in okra under Bangladesh conditions.

Methodology:

The first experiment was carried out at the pot-yard of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, Bangladesh, during March to June 2010. Five concentrations of Chitosan viz., 0, 50, 75, 100 and 125 ppm were applied three times with 15 days interval started from 25 DAS. The growth regulator was sprayed by a hand sprayer at afternoon. The cultivar, BARI dherosh-1 was used as test crop. The pots were filled with 10 kg of well prepared and fertilized soils. The experiment was laid out in a completely randomized design with four replications. Intercultural operations like irrigation, weeding, mulching and pest control were followed as and when necessary for normal plant growth and development. The first experiment was repeated in the following year of 2011 and the experiment was set up on 10 March, 2011 at the field laboratory of BINA, Mymensingh, Bangladesh. The unit plot size was 3 m × 3 m. The row to row and plant to plant distances were 50 cm and 40 cm, respectively. Growth parameters such as TDM plant^-1, AGR and RGR were recorded at 70 and 85 DAS. Plant samples (five plants) were oven dried at 80⁰C ± 2 for 48 hours. The total dry matter plant^-1 was estimated by summing dry matter of leaves, stem, roots and fruits dry weight per plant. AGR and RGR were determined following the methods of Hunt (1978). Chlorophyll content in leaves, NR activity in leaves and photosynthesis in leaf were determined at 65-70 DAS of upper 3-4 nodes leaves in the canopy. Harvesting was done at different dates depending on fruit maturity (5-6 days old fruits). The collected data were analyzed statistically.

Source of Information: Australian Journal of Crop Science, 6(5):918-921 (2012)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Foliar application of Chitosan at vegetative stage enhance plant growth and development which resulted increased fruit yield in okra. Among the concentrations, 100 and 125 ppm had superiority for plant growth, yield components and fruit yield over 50 and 75 ppm. Therefore, application of Chitosan @ 100 or 125 ppm may be recommended for okra cultivation after few more field trials.

Knowledge Management: Journal