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- [21] THE EFFECT OF NITROGEN ON THE MORPHOLOGY AND DRY-MATTER PRODUCTION OF THE ROOT (AND SHOOT) SYSTEMS OF MAIZE, SPRING BARLEY, AND FIELD BEAN VARIETIES, WITH REFERENCE TO TEMPERATURE .2. DRY-MATTER PRODUCTION ZEITSCHRIFT FUR ACKER UND PFLANZENBAU-JOURNAL OF AGRONOMY AND CROP SCIENCE, 1984, 153 (02): : 90 - 104