African indigenous contraception: A review.

In Africa, indigenous methods of contraception continue to play a significant role in preventing unwanted pregnancies despite the introduction and popularity of modern contraceptives. The current review identified the common techniques and practices of African indigenous contraception, and examined their mechanisms and reasons for use. We searched data bases such as Google Scholar, Scopus, Web of Science, EBSCohost, African Journals, Science Direct, textbooks, thesis and dissertations for research articles on African indigenous contraception. The six common techniques of African indigenous contraception included periodic abstinence, withdrawal, breastfeeding, use of herbs, postpartum abstinence and waist bands, whilst practices relate to child (birth) spacing, postponement of first birth (virginity), stopping of reproduction and indigenous emergency contraception. Mother and infant health was stated as one of the reasons for using African indigenous contraception. African indigenous contraception continues to play a critical reproductive role in preventing unwanted pregnancies. However, there is lack of clarity regarding mechanisms, the safety, and efficacy of some techniques.

Nutrient availability and maize growth in a soil amended with earthworm casts from a South African indigenous species.

The study was undertaken to assess the availability to maize of nutrients from earthworm casts (wormcasts) collected from a grazing paddock in the Eastern Cape province of South Africa. Maize (cv PAN 473) was grown in pots filled with ground wormcasts, non-casted surrounding soil and a mixture of the two media. Fertiliser application increased growth and uptake of nutrients by maize grown on both wormcast and non-casted soil. Maize grown on wormcasts had significantly (p < 0.05) higher plant height, stem diameter, dry weight and showed higher nutrient uptake and lower fertiliser response than that grown on corresponding non-casted surface soil. The uptakes of plant nutrients, growth and dry matter yields were in the order fertiliser>wormcasts>non-casted soil. Mixing worm casts with non-casted soil improved maize growth and nutrient uptake over non-casted soil. It is concluded that wormcasts could be used as a soil amendment for crop production, especially in small-scale production systems.