HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

Help viewing high resolution images Return to article

Fig. 1. (A) Synthetic N fertilizer and (B) herbicide active ingredients used in each rotation system, by year. The values shown represent the sums of the mass of materials applied per unit area in each of phase of each rotation system, divided by the length, in years, of the rotation.

Return to article