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black seed oil weed

The combination of the relatively open plant canopy and slow growth, especially at early growth stages, results in lower competitiveness of black seed (Nigella sativa L.) than weeds. Thus, weed interference is known as an important factor affecting black seed yield. Therefore, to determine the critical period of weed control and its effects on nutrients uptake of black seed field experiments were conducted in 2011 and 2012. Two quantitative series of weed removal treatments including weed-infested and weed-free treatments were implemented from black seed emergence to maturity harvest. To determine critical period of weed control, plots were weed-infested or weed-free for 0, 14, 28, 42, 56, 70 days after emergence, in weed-infested and weed-free treatments, respectively. The results revealed that N, P and K contents in weed tissues significantly increased with increasing weed-infested periods during both years of the experiment. The reduction in grain and oil yield due to longer periods of weed-infested conditions or shorter periods of weed-free conditions were accompanied by simultaneous reduction of N, P and K uptake in black seed grains and tissues. Overall, N, P and K contents in weed tissue were found to be 1.8 to 2 times higher than that of black seed. It was concluded that 58 or 49 days weed-free periods are required to avoid yield loss (above 5% or 10%) in black seed.

Peer review under responsibility of Chinese Society for Horticultural Science (CSHS) and Institute of Vegetables and Flowers (IVF), Chinese Academy of Agricultural Sciences (CAAS)


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“In many countries medical cannabis oil is legal, and SA shouldn’t be too far behind. There are over 100 cannabinoids, which can be used to treat various ailments. In countries where it’s legal, there’s been great documented success in managing and healing cancer, insomnia, anxiety, rheumatism, relieving nausea and many more ailments and diseases. It’s brilliant when used for reducing pain.

“It’s been banned in some countries due to reported deaths from people ingesting them. Herbs and supplements should be clinically tested and purchased from reputable manufacturers and wholesalers.”

“Medical cannabis is usually dispensed in the form of capsules, oils, tincture, ointments or suppositories,” she said.

Dr Melissa Wallace, who is head of research at Cansa (Cancer Association of SA) and Lorraine Govender, National Advocacy coordinator, say there is insufficient evidence to support or refute the conclusion that cannabis or cannabinoids are an effective treatment for cancers.

Another “miracle” medicine said to cure just about everything is black seed oil, which you can find at most corner shops selling at R100 a bottle.

A study on Nigella sativa reports that according to the World Health Organization (WHO), more than three-fourths of the communities in resource-limited countries rely upon medicinal plants for their primary health care needs. This is definitely an issue of concern as more than 60% of the societies are unable to have access to proper health care and afford allopathic medicines.

A study titled “From here to eternity – the secret of Pharaohs: Therapeutic potential of black cumin seeds and beyond” quotes that black cumin is a worthy accompaniment ‘From Life here to Eternity’.

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Therapeutic potential of Nigella sativa

Increasing importance given to disease prevention and management has laid a path to seeking safe remedies such as Alternative and complementary medicine. Awareness about incorporating plant-based derivates, herbs, spices in your everyday diet is a healthy trend that is igniting the spirit of netizens. The most common subject that is connecting people across the world is gastronomy. People are trying out new cuisines, drawing inspirations and good practices from global cultures. If this interests you too, read about how you can improve your gastronomical quotient.

This year my vacation plans with the family are rather simple, inexpensive but also a lot of quality time to spend with dear ones. I just made a list of must-watch movies, with some great ideas for snack accompaniments.

According to a review study, some of the most active compounds of black seeds are thymoquinone, thymohydroquinone, dithymoquinone, 4-terpineol, t-anethol, sesquiterpene longifolene, α-pinene, and thymol.

The seeds also containing a good amount of various vitamins and minerals. For example, the seeds contain carotene which is converted by the liver to vitamin A. The root and shoot of Nigella sativa are reported to contain vanillic acid.