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 Time Sowing on the Incidence of Okra Yellow Vein Mosaic Virus (oyvmv)

Suraiya Jitu
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka.

Sanjana Akter
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka.

Md. Belal Hossain
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka.

Somiya Akter
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka.

Abstract/ Executive Summary:

A field experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, Dhaka-1207, from March to August 2018. The aim of the study was to investigate the time sowing effect on disease incidence (%) of the Yellow Vein Mosaic Virus (YVMV) in the selected okra variety. The experiment was carried out in three blocks layout with RCBD comprising three different sowing times. It was observed that among the sowing time, the lowest disease incidence (22.56 %) was found in the first sowing (15th March) and the highest disease incidence (59.00%) was recorded in the third sowing (15th April) at 80 DAS. Yield and yield contributing characters showed significant variance among the three different sowing times. Maximum yield/ plant (0.73 kg) and plot (3.88 kg) were obtained in the first sowing. The relationship study depicted that the quantity of yield and plant height had an inverse relationship with disease incidence percentage. Therefore, a suitable and proper date of sowing (15th March) is essential for higher okra production and lower disease incidence.

Keywords: yellow vein mosaic virus , Disease incidence, Inverse relationship, Yield contributing characters, Okra

Location: Department of Plant Pathology, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207.

Start Date: 00-03-2018

End Date: 00-08-2018

Program Area: Crop-Soil-Water Management

Commodity: Okra, Virus

Objectives:

To optimize the sowing time and minimize the insecticidal use for the cultivation of okra.

Methodology:

The experiment was conducted in the central research field, Department of Plant Pathology, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207. The experiment was carried out in the Kharif-1 season from March to August 2018. The soil of the experimental site was a medium-high land belonging to the Modhupur Tract under the Agro-Ecological Zone (AEZ- 28). The soil texture was silty loam with a pH of 6.7. The weather condition of the experimental field was under the subtropical monsoon climate, which is heavy rainfall during Kharif season (May-September) and scanty in the rabi season (October-March). The average maximum temperature of the experimental site was 33.7°C and the average minimum temperature was 20.4°C. Okra variety, namely Green Finger was used as planting material in the study. The seeds of okra were collected from the local market. The experiment was laid out in a randomized complete block design (RCBD) in three blocks comprised of 8 unit plot and a total number of plots were 24 (8 X 3=24). The size of each unit plot was 6 m² and each plot contained 22 plants. The distance between unit plots was 0.70 m and blocked to 1 m. The selected land for the experiment was ploughed and cross-ploughed several times with a power tiller, laddering was done to obtain good tilth and the experimental plot was separated into the unit plots. The whole amount of cow dung, TSP, MP, and one-third of urea were applied at the time of final land preparation @Cow dung 14 ton/ha, TSP 150 kg/ha, MP 150 kg/ha, and Urea 150 kg/ha. The rest amount of urea was applied as a top dressing in two equal installments. In this study, seeds were sown three times, the first sowing was on 15th March, the second on 30th March, and the third on 15th April, respectively. Seeds were sown in rows of raised beds. Row to row and plant to plant spacing were maintained at 50 cm and 45cm, respectively. Several intercultural operations such as thinning of plants, gap filling, weeding and mulching, irrigation, and drainage were practiced as per necessity to keep the plants healthy. The data were collected on different morphological parameters from the selected plants; the following parameters were documented- I. Disease incidence percentage II. The number of fresh leaves/plant III. A number of infected leaves/ plant IV. The number of vectors/ leaf V. Number of flowers/ plant VI. The number of fruits/ plant VII. Fresh fruit weight (Kg) VIII. Fruit yield (Kg) IX. Plant height (cm) X. Root length (cm) Based on studying of typical symptoms of okra yellow vein mosaic virus tested of okra plant were described by Capoor and Verma (1950), Begum (2002), and Hossain (1998). The okra plants were observed regularly until harvest. Moreover, the symptom was recorded found in the okra plants. The growth stage of the okra plants was categorized as follows-i. Early-stage - 5 weeks after seed sowing ii. Mid-stage - 5 weeks after early-stage and iii. Late-stage - after mid-stage up to harvest. The disease incidence was expressed in percentage based on crop growth stages as well as an average of three stages. The percent of disease incidence was calculated. Computer-based software Statistics- 10.0 was used to analyze data obtained from the study. Tables, graphs, and bar diagrams were used to present analyzed data according to necessity.

Source of Information: Asian J. Crop. Soil Plan. Nutri., Volume 05, Issue 02, 206-212, 2021

Article Link (Online Journal): https://doi.org/10.18801/ajcsp.050221.25

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The study was to investigate the time sowing effect on disease incidence (%) of the Yellow Vein Mosaic Virus (YVMV) in the selected okra variety. Seeds were sown in three different sowing times at an interval of 15 days. It was observed that among the three different sowing times, the lowest disease incidence (22.56%) was found in 1st sowing (on 15 March) and the highest disease incidence (59.00%) was found in 3rd sowing (on 15 April) at 80 DAS. In the 2nd sowing (on 30 March), the disease incidence (23.59%) was moderate. In the case of morphological parameters, the highest number of leaves, flowers, and fruits per plant was recorded in the first sowing (on 15 March) which was 22.63, 26.89, and 23.731 per plant, respectively. Yield and yield contributing characters showed significant variation among the three different sowing times. The study may conclude that the month of March is suitable for okra seeds sowing to avoid the insect vectors and get the best okra production.

Knowledge Management: Journal