Effects of increasing doses of compost on the performance of Chinese cabbage (Brassica chinensis L.) installed on an acid soil of Lubumbashi Objective: A study was conducted on a ferralsol to assess the agronomic efficiency of manure from chickens and mineral fertilizers (NPK and urea) on the yield of Chinese cabbage. Methodology and Results: The experimental design was a completely randomized with six repetitions and six treatments: T0 (unfertilized control), T1 (175 kg NPK +87 kg urea per hectare), T2 (350 kg NPK+47.5 kg Urea per hectare), T3 (15 t.ha-1 manure of chicken compost), T4 (30 t.ha-1 manure of chicken compost), T5 (60 t.ha-1 manure of chicken compost). Manure of chicken, NPK and urea were incorporated into the soil, respectively, a week before the day of transplantation and 3 weeks after transplantation. Highly significant differences (p < 0.05) were found between treatments in terms of growth and yield of Chinese cabbage corn with yields ranging from 1.4 to 5.1 t.ha-1 , the treatments T2 and T5 which gave similar yields and the highest and lowest T0 treatment. Conclusion and application: With reference to yields and agronomic efficiency, doses of manure at 15 t.ha-1 agree to address any use of mineral inputs. However, due to the low availability of manure nutrients, a mineral fertilizer supplement is recommended. The study showed that chicken manure under the conditions of this trial was a great potential for improving the availability of nutrients in soil and was able to provide the amount of nutrients needed to growing Chinese cabbage without the addition of mineral fertilizers.

Effects of increasing doses of compost on the performance of Chinese cabbage (Brassica chinensis L.) installed on an acid soil of Lubumbashi Objective: A study was conducted on a ferralsol to assess the agronomic efficiency of manure from chickens and mineral fertilizers (NPK and urea) on the yield of Chinese cabbage. Methodology and Results: The experimental design was a completely randomized with six repetitions and six treatments: T0 (unfertilized control), T1 (175 kg NPK +87 kg urea per hectare), T2 (350 kg NPK+47.5 kg Urea per hectare), T3 (15 t.ha -1 manure of chicken compost), T4 (30 t.ha -1 manure of chicken compost), T5 (60 t.ha -1 manure of chicken compost). Manure of chicken, NPK and urea were incorporated into the soil, respectively, a week before the day of transplantation and 3 weeks after transplantation. Highly significant differences (p < 0.05) were found between treatments in terms of growth and yield of Chinese cabbage corn with yields ranging from 1.4 to 5.1 t.ha -1 , the treatments T2 and T5 which gave similar yields and the highest and lowest T0 treatment. Conclusion and application: With reference to yields and agronomic efficiency, doses of manure at 15 t.ha -1 agree to address any use of mineral inputs. However, due to the low availability of manure nutrients, a mineral fertilizer supplement is recommended. The study showed that chicken manure under the conditions of this trial was a great potential for improving the availability of nutrients in soil and was able to provide the amount of nutrients needed to growing Chinese cabbage without the addition of mineral fertilizers.