Effect of geocarposphere temperature on pre-harvest colonization of drought-stressed peanuts byAspergillus flavusand subsequent aflatoxin contamination
✍ Scribed by Paul D. Blankenship; Richard J. Cole; Timothy H. Sanders; Robert A. Hill
- Publisher
- Springer Netherlands
- Year
- 1984
- Tongue
- English
- Weight
- 444 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0301-486X
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✦ Synopsis
Florunner peanuts grown in research plots were subjected to 5 soil temperature and moisture treatment regimes resulting in A. flavus infestation and subsequent aflatoxin contamination in drought-stressed peanuts. Treatments imposed beginning 85 days after planting were drought, drought with heated soil and 3 drought treatments with cooled soil. The incidence of A. flavus in drought-stressed, unshelled , sound mature kernels ( SMK ) decreased with decreases in the mean 5 cm deep soil temperature. The incidence of A. flavus was greater in inedible categories and in damaged kernels than in SMK . The mean, threshold, geocarposphere temperature required for aflatoxin development during the latter part of the peanut growth cycle was found to be between 25.7 degrees C and 27 degrees C.