The oven temperature for drying rice plant samples for determination of moisture content is recommended by IRRI at 80 0C for 12 to 72 hours till a constant mass.

http://asl.irri.org/lims/downloads/QM%20AD036%20MP24%20P_and_S%20prep_rev04.pdf

file:///F:/RG/Methods/suagr_starch_plant_tissue.pdf

The drying period (12 to 72 hours) depends on type of samples (relatively dry to too wet sample etc). The constant mass refers to the change in mass recorded over a four-hour period, which should be less than twice the sensitivity of the scale.

Reeb and Milota (1999) suggested oven temperature of 103±3 0C for 24 hours for optimum drying of plant samples

Reeb, J. and Milota, M. 1999. Moisture content by the ovendry method for industrial testing, Oregon State University, Corvallis, OR, WDKA, May 1999.

http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/5190/Moisture_Content_ocr.pdf

In some literature, an oven temperature of 105 0C for 2 for hours is recommended for estimation of dry matter of plant samples (Kalra 2000).

Kalra Y, Methods for plant Analysis, CRC Press, NW Corporate BVLO, Boca Raton, Florida, LLC, 2000.

http://www.e-reading.club/bookreader.php/136339/Kalra_-_Handbook_of_Reference_Methods_for_Plant_Analysis.pdf

Please have a look at this link and PDF attachment.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4052627/

Dear Iram Malik

The rice plants at early stages of growth can be dried at 80 ºC  for 24 hours, but  the plants at mid to later stages of development could be dried at 80 ºC for 48 hours.

Please refer to this article Jindal V K，Siebenmorgen T J． Effects of oven drying temperature

and drying time on rough rice moisture content determination

［J］． Transactions of the ASAE，1987，30 ( 4 ) :

1185 － 1192

Dear Malik,

I am in accordance with Dr. Nilay Borah, AAU. So, please go ahead.

Good luck !

hi sir how about on vegetable seedlings what will be the best temperature and duration for oven dry weight determination? ty