[ Apport de Calcium, Phosphore et Potassium sur les composantes de la croissance et du rendement de Soja (Glycine max (L.) Merr) ]
Blaise MATONDO NKAU1, Pélagie MBANDU TUZOLAWA2, and Herman PULULU BASUNGA3
1 Université Loyola du Congo, Kinshasa, RD Congo
2 Département de Biologie et Techniques Appliquées, Institut Supérieur Pédagogique de la Gombe, Kinshasa, RD Congo
3 Agroforesterie, Faculté des Sciences Agronomiques et Vétérinaires, Université Loyola du Congo, Kinshasa, RD Congo
Original language: French
Copyright © 2026 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Soybean yield in the Democratic Republic of Congo (D.R.C.) does not exceed 800 kg/ha. The present study focused on the application of calcium, phosphorus, and potassium to improve growth and yield components. The experimental cultivar was TGX1830-20, adapted to the edaphoclimatic conditions of the cultivation areas in the southwest and central regions of the D.R.C. The growth and yield components evaluated in this trial were stem thickness and length, number of nodes and pods, and finally seed dry weight. The results obtained show that the application of the three minerals improved all the parameters tested. The application of the three minerals (Ca, K, and P) to the soil made it possible to reach one ton of soybean grain per hectare in the absence of the preferred species Bradyrhizobium japonicum.
Author Keywords: growth, yield, calcium, phosphorus, potassium, nodes, pods.
Blaise MATONDO NKAU1, Pélagie MBANDU TUZOLAWA2, and Herman PULULU BASUNGA3
1 Université Loyola du Congo, Kinshasa, RD Congo
2 Département de Biologie et Techniques Appliquées, Institut Supérieur Pédagogique de la Gombe, Kinshasa, RD Congo
3 Agroforesterie, Faculté des Sciences Agronomiques et Vétérinaires, Université Loyola du Congo, Kinshasa, RD Congo
Original language: French
Copyright © 2026 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Soybean yield in the Democratic Republic of Congo (D.R.C.) does not exceed 800 kg/ha. The present study focused on the application of calcium, phosphorus, and potassium to improve growth and yield components. The experimental cultivar was TGX1830-20, adapted to the edaphoclimatic conditions of the cultivation areas in the southwest and central regions of the D.R.C. The growth and yield components evaluated in this trial were stem thickness and length, number of nodes and pods, and finally seed dry weight. The results obtained show that the application of the three minerals improved all the parameters tested. The application of the three minerals (Ca, K, and P) to the soil made it possible to reach one ton of soybean grain per hectare in the absence of the preferred species Bradyrhizobium japonicum.
Author Keywords: growth, yield, calcium, phosphorus, potassium, nodes, pods.
Abstract: (french)
Le rendement de soja en République Démocratique Congo (R.D.C.) ne dépasse pas 800 kg/ha. La présente recherche s’est penchée sur l’apport de calcium, phosphore et de potassium pour amélioration des composantes de la croissance et du rendement. Le cultivar expérimenté était TGX1830-20 adapté aux conditions édapho-climatiques des airs de culture dont le sud-ouest et le centre de la R D C. Les composantes de la croissance et du rendement retenues pour cet essai sont l’épaisseur et la longueur de la tige, le nombre de nœuds et gousses, enfin le poids sec de graines. Les résultats obtenus montrent que l’apport de trois minéraux a amélioré tous les paramètres testés. L’apport de trois minéraux (Ca, K, et P) dans le sol a permis d’atteindre la tonne de soja graine à l’hectare en l’absence l’espèce de prédilection Bradyrhizobium japonicum.
Author Keywords: croissance, rendement, calcium, phosphore, potassium, nœuds, gousses.
