Effect of conventional and non-conventional seed treatments on storability of wheat seeds
Loading...
Date
2005-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Wheat, Triticum aestivum L. is widely cultivated cereal crop and in terms of production also it is leading among all the food crops in the world. India inspite of being the second largest producer of wheat, deterioration of wheat seeds or grain quality is one of the major constraints for losses by fungi and other pests during storage. In the present investigation Alternaria alternata, Chaetomium globosum, Curvularia lunata, Fusarium moniliforme and Helminthosporium sativum were detected from untreated and pretreated seeds of wheat using Standard Blotter and Agar Plate method. These fungi were found to decrease the percent emergence of normal seedlings and increase the percent emergence of abnormal seedlings and seed rot in wheat seeds during storage from May 2004 to October 2004. Seed treatment with physical heat, chemical fungicides, bioagents and botanicals were given to manage these seed borne fungi during storage. All the treatments were found to be effective and gave significantly higher percent emergence of normal seedlings as compared to check in vivo. However, thiram gave highest percent emergence (83.17 %) of normal seedlings followed by captan (80.3 %) and pinus oil (78.5 %) as compared to check (68.5 %). Under glasshouse conditions, thiram gave highest percent emergence (85 %) of normal seedlings followed by captan (82 %) and pinus oil (79 %) as compared to check (68 %). However, all the treatments used for study were found to be significantly superior over check. Percent inhibition of radial growth of all the five fungi were significantly higher in thiram followed by captan, pinus oil, mustard oil + turmeric powder and Trichoderma harzianum @ 500 ppm as compared to check in vitro. However, all the treatments were significantly superior over check at all the three concentrations. Thiram followed by captan when evaluated under different experiments proved to be the best among conventional seed treatments. However, pinus oil, mustard oil + turmeric powder, solar heat treatment and Trichoderma harzianum were also proved to be the effective treatments among non-conventional seed treatments.
Description
Keywords
null