TITLE:
Impact of Poultry Manure on the Growth and Yield of Three Tomato (Solanum lycopersicum L.) Cultivars Cultivated in Brazzaville
AUTHORS:
Dalcantara Liana Ongouya Mouekouba, Alain Mercier Bita, Alaric Makoundou, Julia De Fauve Eloïme Mansinsa, Joseph Mpika, Attibayeba
KEYWORDS:
Poultry Manure, Tomato, Growth, Yield, Organic Fertilizer
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.16 No.8,
August
18,
2025
ABSTRACT: Tomato (Solanum lycopersicum L.) is widely cultivated worldwide for its fruit, which is rich in water, minerals, and proteins, and plays a role in disease prevention. However, in the Republic of Congo, low production levels fail to meet population needs, primarily due to inadequate agricultural practices, particularly in fertilization. This study aimed to evaluate the impact of organic fertilizer on tomato growth and yield. A completely randomized block design (CRBD) with two factors fertilizer and variety was used, including three replications and nine treatments. T0 served as the control, and T1 represented poultry manure application. Growth parameters were measured over 15 weeks post-transplanting, while yield parameters were assessed over 12 weeks. Statistical analysis involved the independent samples median test and ANOVA at the 5% significance level. Results showed that plants treated with poultry manure exhibited significantly enhanced growth and yield compared to unfertilized plants. Poultry manure markedly improves both the vegetative and reproductive performance of tomato plants.