Hi,
I am looking for data on safe storage life of corn and soybean grains ,in storage, based on grain temperature and grain moisture. The data available in public domain can be used only up to 27 DC, but at my place temperature goes beyond 27 DC sometimes may 40 DC also.
I will appreciate your help if you can help me out to get the data for a extended grain moisture and grain temperature ranges.
High temperature storage had been reported to reduce seed germination and seedling vigour, possibly due to impairment of membrane integrity and respiratory metabolic processes. High seed moisture followed by high temperature storage was reported to lower ATP and GTP levels significantly in embryonic axes of seeds. GTP by virtue of involvement in protein synthesis may have significant effect on poor seedling vigour if present at low level. Further, higher levels of ATP, GTP are associated with increased metabolic rate and accordingly may adversely affect growth potential of seedlings at lower levels.
The following links may provide useful clues:
http://bru.gmprc.ksu.edu/proj/iwcspp/pdf2/9/6207.pdf
http://scialert.net/qredirect.php?doi=rjss.2014.75.86&linkid=pdf
http://spiru.cgahr.ksu.edu/proj/iwcspp/pdf2/9/6208.pdf
http://jxb.oxfordjournals.org/content/54/384/1057.full.pdf+html
http://www.doiserbia.nb.rs/img/doi/1018-1806/2010/1018-18061052153B.pdf
Dear Manoj Gupta
If the temperature of storage place is high, you can dry maize seeds as low as 5% and then store them. About 1% lowering of seed moisture content of maize and other orthodox seeds could almost double the life span of seeds. However, about 5 °C lowering of the temperature can do the same. Therefore, the effect of moisture content on life span of orthodox seeds is much higher than that of temperature.
Best wishes
Kazem Ghassemi-Golezani
Dear,
Depends on each plant and cultivar! The most important in many cases should be pathogens/pests and environment for them to grow ! Check it out carefully!
Dear Manoj,
The approach to grain is different to seeds, but the control of moisture is the key for the success. Currently, the system of aeration has to consider the use of cold air with low moisture contents. The region is important to decide about both factors: air temperature and moisture content. Grain pathogens are another aspect to make decisions. The information you attached to your question allow me to figure out you are dealing with seeds instead of grain. So, it is dangerous to make recommedations. You need information about the weather conditions, the chemical composition of the grain, and at the end you have to calculate how much it costs. Please, see my colleague paper attached to my page in RS. I am going to find a book (in Portuguese) where you can find many informations about grain storage. I´ll be back as soon as possible. Best regards. Walter