But the gap between supply and demand for organs affects the poor too, by creating a market in body parts where abuses are rife.In prosperous and middle-income countries, the waiting lists for organ transplants grow ever longer as ageing populations, hypertension and obesity (a big cause of diabetes-driven kidney failure) take their toll.
Transplants grown in the blends containing wheat straw and rice hull compost up to 50% had similar N concentrations; however, transplants grown in 100% rice hull had greater N concentrations than those grown in 100% wheat straw compost (Fig. 4a).
Overall, transplants grown in the 30 50% rice hull compost blend were the largest and most vigorous, and had the best performance when transplanted in the field.
Overall, transplants grown in media-containing guar or jantar compost had greater quantities of all measured nutrients than those grown in the wheat straw and rice hull composts.
In contrast, transplants grown in the wheat straw and rice hull compost blends had significantly less N and decreased in concentration with the addition of these composts.
Concentrations of all measured nutrients, except P, of transplants grown in the wheat straw and rice hull compost blends did, however, decrease with increasing compost proportions.
The fresh weight of transplants grown in all media-containing guar, jantar, and wheat straw composts was significantly less than the 100% peat control.
Transplants grown in media-containing guar compost had the greatest N concentrations, followed by those grown in media-containing jantar compost, with tissue N concentration increasing with increased proportion of these composts.
Open image in new window Fig. 4 Non-parametric regressions of the N (a), P (b), K (c), Fe (d), B (e), and Zn (f) tissue concentrations of muskmelon transplants grown in media with guar, jantar, wheat straw, and rice hull compost combined in varying proportions of peat.
