SESSION IV
DISCIPLINARY WORKING GROUP REPORTS

• Socio-economic and policy studies working group - (Rapporteur: W. LOCKERETZ)

• Soil science and plant nutrient management working group - (Rapporteur: P. von FRAGSTEIN and H. KLOEN)

• Plant production working group - (Rapporteur: C. STOPES and Chairman: D. ZNAOR)

• Sustainable plant health working group - (Rapporteur: M. WOLFE)