Santosh Shiwakoti

Ph.D Candidate


Office: 541-224-6766

Crop Science Building

Crop Science Building 417

3050 SW Campus Way

3050 SW Campus Way
Corvallis, OR 97331
Academic Interests: 

My research is focussed on some of the long-term experiments (LTEs) at Columbia Basin Agriculture Research Center (CBARC), Pendleton, OR. I am studying the long-term effects of agricultural practices (crop residue incorporation, organic and inorganic amendments,  tillage types, and tillage intensities on plant and soil nutrients (nitrogen, phosphorus, potassium, sulfur, carbon, magnesium, calcium, manganese, copper, iron, boron, and zinc) in dryland winter wheat cropping system of Pacific Northwest. I will be analyzing soil and wheat (grain and straw) samples from 1995, 2005, and 2015 and compare it with the undisturbed grassland plots' soil samples from those years. My primary research question is whether all the above-mentioned practices are sustainable for a long term winter wheat production or not. Nutrients are one of the prime indicators of a good soil quality, and hence it is necessary to elucidate the dynamics of nutrients over the time influenced by the different agricultural practices.

I started my Ph.D. degree at University of Wyoming (UW) in 2013 and transferred to OSU in 2015. During my brief UW time, I conducted a field research on mints (spearmints, peppermints, Japanese corn mints). My another research was on three different types of season extension methods (low tunnel, high tunnel and low tunnel in a high tunnel) of vegetables and herbs production for Wyoming conditions.

During my MS at Auburn University, AL, I did a field and greenhouse research on American skullcap (Scutellaria lateriflora) and its flavonoid contents under the supervision of Dr. Dennis A. Shannon