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Impact of Poultry Manure on the Growth and Yield of Three Tomato ( Solanum lycopersicum L .) Cultivars Cultivated in Brazzaville
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 1 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 2 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 3 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 4 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 5 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
- 6 Laboratory of Biotechnology and Plant Production, Faculty of Science and Technology, Marien NGOUABI University, Brazzaville, Congo
American Journal of Plant Sciences·Volume 16 (2025)·Pages 967–981·Published 18 August 2025·DOI10.4236/ajps.2025.168065
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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.
KeywordsPoultry ManureTomatoGrowthYieldOrganic Fertilizer
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