TY - JA AU - Garrard,H.L. TI - Springtime diagnostic approaches for corn [Planting, yields, production costs and profits] SN - 0162-5098 U1 - 80-491562 PY - 1979/// KW - Farm organization and management KW - Maize KW - AGROVOC KW - Plant production KW - Zea mays N1 - ill T2 - Crops and Soils Magazine ER -