Agronomic productivity and nitrogen requirements of alternative tillage and crop establishment systems for improved weed control in direct-seeded rice von Pittelkow, C.M., Fischer, A.J., Moechnig, M.J., Hill, J.E., Koffler, K.B., Mutters, R.G., Greer, C.A., Cho, Y.S., van Kessel, C., Linquist, B.A.

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