In the heart of Saudi Arabia’s Al-Ahsa region, a groundbreaking study is reshaping the way we think about marigold cultivation. Researchers at King Faisal University have discovered that biostimulants can significantly enhance the growth and flowering of Tagetes erecta L., commonly known as marigold. This research, led by Rashed Nahed M. from the Department of Arid Land Agriculture, offers promising insights into sustainable agriculture and horticulture practices.
Marigolds, known for their vibrant colors and medicinal properties, have long been a staple in gardens and floral arrangements. However, the challenge of improving their growth and yield has persisted. The study, published in ‘Folia Horticulturae’, explored the effects of various biostimulants on marigold production. The biostimulants tested included Spirulina, Moringa leaves extract (MLE), chitosan, and pollen grains date palm extract (PGPE).
The results were striking. Plants treated with these biostimulants showed significant improvements in growth, flowering, and yield attributes compared to untreated plants. Chitosan and MLE emerged as the most effective, boosting growth attributes, flower quality, and yield per plant and per hectare. “The use of biostimulants not only enhances the growth and flowering of marigolds but also contributes to sustainable agriculture by reducing the reliance on synthetic fertilisers,” said Rashed Nahed M., the lead author of the study.
One of the most notable findings was the impact of Spirulina on the flowering rate, which increased by 86.67%. MLE recorded a maximum increase in flower yield per plant and per hectare, with a 66.49% improvement over the control. PGPE, on the other hand, was particularly effective in promoting root elongation, with a 51.27% increase.
The commercial implications of this research are substantial. By adopting these eco-friendly strategies, growers can enhance marigold production, leading to improved crop management practices and increased economic returns. The study’s findings pave the way for future developments in the field, offering a blueprint for sustainable and profitable marigold cultivation.
As the agricultural sector continues to seek innovative solutions to enhance crop yield and sustainability, this research provides a beacon of hope. The use of biostimulants not only promises to revolutionize marigold production but also sets a precedent for other crops, potentially transforming the agricultural landscape. With further research and application, the benefits of biostimulants could extend far beyond marigolds, shaping the future of sustainable agriculture.