EFFECT OF PLANT EXTRACT AND BIO-FUNGICIDE ON SEEDBORNE FUNGI AND INCIDENCE OF BLACK POINT AND BIPOLARIS LEAF BLIGHT OF WHEAT
Date
2009-06
Authors
SHAH, MD. ASHANUR RAHMAN
Journal Title
Journal ISSN
Volume Title
Publisher
HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR.
Abstract
A laboratory and a pot experiment were conducted to determine the effective and
environment friendly measure to control of seed-borne fungi and Bipolaris leaf blight
and black point disease of wheat. Seed treatment and foliar spray was applied with
three plant extract viz. allamanda leaf, garlic and thankuni at the ratio of 1:1 and a biocontrol agent namely BAU Bio-fungicide at the rate of 2.0%. Foliar spray was applied
at two times first at heading and second at grain formation stages of plant growth.
Seed treatment with plant extract and bio-fungicide inhibit seed borne fungal growth
of Bipolaris sorokiniana, Curvularia sp., Alternaria sp., Fusarium sp. and
Aspergillus sp. and increased 7-21% seed germination. But maximum inhibition of
fungal growth as well as increased seed germination and healthy seedlings was found
when seeds were treated with BAU-Biofungicide followed by allamanda leaf extract.
Severity of Bipolaris leaf blight on flag leaf and flag-1 leaf was significantly reduced
when seed treatment and foliar spray applied to wheat plant. Maximum decreased in
disease severity and black pointed seed and increased in grain yield and seed quality
was found when seeds were treated with Bio-fungicide and plants were sprayed with
the fungicide. Among the plant extract applied in the experiment allamanda leaf
extract gave the better result to increasing grain yield and apparently healthy seeds
moreover decreasing undersized and black point infected seed.
Description
Wheat (Triticum aestivum L.) is one of the main cereal food crops in the world. About
two third of the world population consume wheat as staple food (Majumder, 1991). It
is considered as the second most important cereal in Bangladesh. In China, Mexico,
and USA, the average yield recorded are 3.8, 4.5, and 2.9 t/ha respectively (Ekboir,
2002). Wheat provides nearly 20% of the world total food requirement and wheat is
nutritionally more rich food than rice with protein content of 12% as against 8% in
rice, Though the crop has been introduced in 1967 in the country (the East Pakistan),
but its cultivation popularly increased after 1975. At present 1.6 million tons of wheat
are produced in 0.7 million hectors land of Bangladesh (Anon.2004). In spite of its
importance, the average yield of the crop in our country is low (2.17 t/ha) in
comparison to the other countries.
Keywords
PLANT EXTRACT AND BIO-FUNGICIDE ON SEEDBORNE FUNGI AND INCIDENCE OF BLACK POINT AND BIPOLARIS LEAF BLIGHT OF WHEAT, Collection of BAU bio-fungicide, Seed treatment with plant extract