Parents' knowledge and understanding of skin cancer and skin self-examination and behaviors to protect their children from the sun.

PURPOSE: The aim of this study was to determine parents' knowledge of skin cancer and skin self-examination (SSE) and their efforts to protect their school aged children from the sun. METHODS: This cross-sectional study was conducted between November 2018 and November 2019 in Turkey with 1004 parents of middle school students. RESULTS: Of the parents, 53.7% did not have knowledge about skin cancer or SSE, and 76% did not conduct SSEs with their 9-14 years old children. A total of 61.3% of the participants prevented their children from standing in the sun, but 56.1% did not apply sunscreen to their children. The total mean score on the Skin Cancer and Sun Knowledge Scale (SCSKS) was 13.16 ± 3.03. There were significant differences in the total SCSKS scores by parental gender, number of children, education level, economic status, use of sunscreen, frequency of application of sunscreen, use of light-colored clothing, prevention of exposure to sunlight, use of sunglasses outside, knowledge about skin cancer and SSE and knowledge about early diagnosis of skin cancer (p < 0.05). CONCLUSION: This study showed that parents' behaviors related to sun protection and their skin cancer and SSE knowledge levels were not sufficient. In schools, both students and parents should receive health education regarding skin cancer and prevention methods.

Striga Biocontrol on a Toothpick: A Readily Deployable and Inexpensive Method for Smallholder Farmers.

Striga hermonthica (witchweed) is a parasitic weed that attacks and significantly reduces the yields of maize, sorghum, millet, and sugarcane throughout sub-Saharan Africa. Low cost management methods such as hand weeding, short crop rotations, trap cropping, or conventional biocontrol have not been effective. Likewise, Striga-tolerant or herbicide-resistant maize cultivars are higher yielding, but are often beyond the economic means of sustenance farmers. The fungal pathogen, Fusarium oxysporum f.sp. strigae, has been the object of numerous studies to develop Striga biocontrol. Under experimental conditions this pathogen can reduce the incidence of Striga infestation but field use is not extensive, perhaps because it has not been sufficiently effective in restoring crop yield and reducing the soil Striga seed bank. Here we brought together Kenyan and US crop scientists with smallholder farmers to develop and validate an effective biocontrol strategy for management of Striga on smallholder farms. Key components of this research project were the following: (1) Development of a two-step method of fungal delivery, including laboratory coating of primary inoculum on toothpicks, followed by on-farm production of secondary field inoculum in boiled rice enabling delivery of vigorous, fresh inoculum directly to the seedbed; (2) Training of smallholder farmers (85% women), to produce the biocontrol agent and incorporate it into their maize plantings in Striga-infested soils and collect agronomic data. The field tests expanded from 30 smallholder farmers to a two-season, 500-farmer plot trial including paired plus and minus biocontrol plots with fertilizer and hybrid seed in both plots and; (3) Concerted selection of variants of the pathogen identified for enhanced virulence, as has been demonstrated in other host parasite systems were employed here on Striga via pathogen excretion of the amino acids L-leucine and L-tyrosine that are toxic to Striga but innocuous to maize. This overall strategy resulted in an average of >50% increased maize yield in the March to June rains season and >40% in the September to December rains season. Integration of this enhanced plant pathogen to Striga management in maize can significantly increase the maize yield of smallholder farmers in Kenya.