Putwattana, N., Kruatrachue, M., Pokethitiyook, P. and Chaiyarat, R. (2010). Immobilization of cadmium in soil by cow manure and silicate fertilizer, and reduced accumulation of cadmium in sweet basil (Ocimum basilicum). ScienceAsia, 36, 349-354.
Putwattana, N., Kruatrachue, M., Kumsopa, N. and Pokethitiyook, P. (2015). Evaluation of organic and inorganic amendments on maize growth and uptake of Cd and Zn from contaminated paddy soil. Int. J. phytoremediation, 17, 165-174.
Chaiyarat, R., Suebsima, R., Putwattana, N., Kruatrachue, M. and Pokethitiyook, P. (2011). Effects of soil amendments on growth and metal uptake by *Ocimum gratissimum *grown in soil. Cd/Zn-contaminated Water Air Soil Pollut., 214(1-4), 383-392.
Proceeding in Center of Excellence on Environmental Health and Toxicology at the Convention Center, Chulaphorn Research Institute, Bangkok, Thailand, 2555. Poster presentation of Cow manure and Zeolite on Uptake and Accumulation of maize grown in Cd contaminated soil.