Effect of organic amendment on stem canker and black scurf disease of potato (Solanum tuberosum)

M U Ahmad,M A Ali,K M Khalequzzaman,Md Monirul Islam,T K Dey,M M Rahman

doi:10.14393/bj-v32n2a2016-29333

Abstract

: An experiment was conducted at Tuber Crops Research Centre, BARI, Bogra during 2008-2009 to evaluate the organic amendment for controlling the stem canker and black scurf of potato. The different kinds of organic amendments were: T 1 =Poultry refuse (PR) at 4 t ha -1 , T 2 =PR at 5 t ha -1 , T 3 =PR at 6 t ha -1 , T 4 =Mustard oil cake (MOC) at 300kg ha -1 , T 5 =MOC at 500kg ha -1 , T 6 =Neem oil cake (NOC) at 300kg ha -1 , T 7 =NOC at 500kg ha -1 , T 8 =Sawdust burning and T 9 = Control. The experiment was laid out in a randomized complete block design (RCBD) with four replications. The organic amendment significantly influenced the disease incidence, yield attributes and yield of potato. The lowest disease incidence (17.5%) and per cent disease index (9.99) were found in T 3 (poultry waste at 6 t ha -1 ). The minimum russet, deformed and Sclerotia infected tubers were also recorded in poultry waste at 6 t ha -1 . The highest healthy tubers and tuber yield were found in the same treatment. Therefore, poultry manure 6 t ha -1 along with recommended dose of chemical fertilizer can be recommended to produce healthy tubers and maximum tuber yield of potato.

Highlights

Potato is a very important vegetable crop in Bangladesh (HASHEM, 1990)
The germination (%) and growth parameters of potato were significantly influenced by the stem canker pathogen under different organic amendments. (Table 1)
Organic manure amendments such as poultry waste mustard oil cake and sawdust were tested in controlling stem canker and black scurf disease

Summary

Introduction

Potato is a very important vegetable crop in Bangladesh (HASHEM, 1990). It is used as food and cash crop in cool countries. It can meet the vegetable demand and provide necessary nutrients for the people from low income group (ISLAM et al, 2009). One of the major diseases is stem canker and black scurf caused by Rhizoctonia solani (Khun). It is the most common and widespread disease throughout the country (ALI; DEY, 1994). Rhizoctonia solani is a soil-borne and tuber-borne fungus and causesblack scurf’ on potato tubers and canker on stems. The fungus is present in most soils and once established in a field, remains there indefinitely (AGRIOS, 2005)

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Discussion

Conclusion