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6. Foliar Diagnosis and Fertiliser Prescription in Forestry—The DRIS System and its Potential
Item type: Journal Article • Journal: South African Forestry Journal • Authors: C.J. Schutz --- D.R. de Wet Forestry Research Centre, Dept. of Environment Affairs, J.M. de Villiers --- ,Problems associated with current foliar diagnosis techniques are reviewed. Many of these problems have been overcome in agricultural crops by use of the Diagnosis and Recommendation Integrated System (ORIS). The foundation of DRIS is the concept of nutrient balance, the... -
Diagnosing foliar nutrient dynamics of Eucalyptus grandis in KwaZulu-Natal, South Africa, using optimal element ratios and the diagnosis and recommendation integrated system (DRIS)
Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: JM Campion MC ScholesFertilisation is one of the most cost-effective methods of increasing and maintaining the productivity of Eucalyptus grandis plantations in South Africa. This silvicultural practice can be optimised by using the foliar nutrient ratios measured in plants at maximum growth as... -
Soil nutrient deficiency assessment under soybean cropping systems using the DRIS system in northern and central Benin
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: --- Integrated Soil and Crop Management Research Unit, Benin --- Agricultural Research Centre (CRA) of Agonkanmey, Benin --- Polytechnic School of Abomey-Calavi, Benin --- Agricultural Research Centre (CRA) of Agonkanmey, Benin --- University of Abomey-Calavi, Benin --- Integrated Soil and Crop Management Research Unit, Benin --- Integrated Soil and Crop Management Research Unit, BeninSoybean is one of the promising crops in the Benin agro-industrial sector, but its production is carried out at the expense of the inherent soil fertility. The present study aims to apply the DRIS (Diagnosis and Recommendation Integrated System) for...