France Tabac, 1987, 28, p. 6-30, ISSN.0296-3361 Harvesting and curing tobaccos DE ROTON C. Black tobacco. Burley. Virginia....
France Tabac, 1988, 39, p. 5-17, ISSN.0296-3361 Control of flowers and buds on tobacco ARRESTIER R.; DE ROTON C. Institut du Tabac, Bergerac, France Topping. Suckering....
Bull. Spec. CORESTA Congress, Guangzhou 1988, p. 86, A-4 An attempt to apply the nitrogen assessment method to Virginia tobacco crops DE ROTON C. CFPPT, Bergerac, France The purpose of this study was to develop a nitrogen assessment method for use with Virginia tobaccos grown in France, based on existing methods already in operation for cereals. The assessment method consists of relating the following parameters : _...