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Influence of Temperature and Humidity on Development of Stemphylium Blight Disease of Lentil. Season: 2017-2018

M. B. Anwar
Pulses Research Centre, BARI, Ishurdi, Pubna, Bangladesh

D. Sarkar
Pulses Research Centre, BARI, Ishurdi, Pubna, Bangladesh

M. Hossain
Pulses Research Centre, BARI, Ishurdi, Pubna, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the experimental field of Plant Pathology Division, RARS, Jashore and Pulses Research Centre, Ishurdi, Pabna during Rabi 2017-18 to find out optimum planting time and actual temperature and humidity on development of Stemphylium blight of lentil in a Randomize Complete Block Design. There are five treatments such as sowing date 15^th November, 25^th November, 5^th December, 15^th December, and 25^th December. Among the treatments, where planting date was 25^th November 2017 showed reduced disease severity and increased yield. It may be recommended that lentil production could be possible if it is sowing from mid-November to late December.

Keywords: Pulses, Lentil, Grain yield, BARI Masur-1, Diseases

Location: Plant Pathology Division, RARS, Jashore and Pulses Research Centre, Ishurdi, Pabna, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Lentil, Diseases

Objectives:

To find out optimum planting time and actual environment for development of disease.

Methodology:

The experiment was conducted at the experimental field of Plant Pathology Division, RARS, Jashore and Pulses Research Centre, Ishurdi, Pabna during Rabi 2017-18. The experiment was carried out in randomized complete block design with three replications. The plot size was 5 m x 4 m and distance between the two rows was 30 cm. The seed of susceptible variety BARI Masur-1 was sown continuously in rows. Five planting time were applied such as T₁= 15 November, T₂= 25 November, T₃= 05 December, T₄= 15 December, and T₅= 15 December. Fertilizer and other intercultural operations were applied as per recommendation by PRC, BARI. Stemphylium blight was rated on a 0-5 scoring scale (Bakr and Ahmed, 1992, Bakr et al., 2000) where, 0 = no infection (HR), 1= few scattered leaf infection but no twig blighted (MR), 2 = 5-10% leaf infected and or few scattered twig blighted (MR), 3 = 11-20% leaflet infected and /or 1-5% twigs blighted (MS), 4 = 21-50% leaflet infected and /or 6-10% twigs blighted (S) and 5= above 51% leaflet infected and /or more than 10% twigs blighted (HS). Data on disease severity and yield contributing characters such as plant height, number of plants per m², number of pods per plant and finally yield were taken.

Source of Information: Annual Research Report-2017-2018, Plant Pathology Division, Pulses Research Centre, BARI, Ishurdi, Pubna, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

This season weather was very harsh for lentil production in early stage because of in the month of October and early November heavy rain pour in Ishurdi and Jashore region. From the above study it may be concluded that lentil production may be possible if it is sowing from mid-November to late December. Micro-climate data were not taken in this year for unavailability of the instrument which will be monitored in next year.

Knowledge Management: Report/Proceedings