![Effect of deep placement of controlled release nitrogen fertilizer (coated urea) on growth, yield, and nitrogen fixation of soybean plants]()
Effect of deep placement of controlled release nitrogen fertilizer (coated urea) on growth, yield, and nitrogen fixation of soybean plantsTakahashi, Yoshihiko; Chinushi, Toshiaki; Nagumo, Yoshifumi; Nakano, Tomio; Ohyama, Takuji · Soil Science and Plant Nutrition · 1991