African students breeding Striga-resistant cowpea at US uni.
Stover quality
A couple of papers today on stover quality, and how to get it. Stover is just the dried stalks and leaves of a crop, left in the field after the grain has been harvested. In many places around the world, it is almost as important as the grain itself, because it is used as animal forage or fodder. Sheep and goats and other animals are often allowed to roam around the harvested fields and eat their fill of the dried remains of the crop as well as any weeds and other volunteer plants they may find.
How to get the best quality stover, in terms of its digestibility and nutrient compositions? Well, as in so many things, genetics and management, according to work by three CG Centres. A paper on pearl millet in India by ICRISAT and ILRI researchers points to the importance of genetics: landraces had better quality stover than hybrids, though it came at the expense of yield. On the other hand, a paper from ICARDA in Syria found that rotations involving growing legumes such as medics or vetch in alternate years improved the protein content of both the grain and stubble of durum wheat. Now, I wonder, is there an interaction between the two? Do some varieties respond better than others to management in terms of their nutritional quality?
Low sugar watermelon
USDA boffins breed watermelon for diabetics.
Farmer Field Schools in the Pacific and beyond
Danny Hunter has sent us this contribution. Until recently, Danny ran the TaroGen and DSAP projects at the Secretariat of the Pacific Community in Fiji. Thanks, Danny.
An interesting article from SciDevNet about farmer empowerment through Farmer Field Schools (FFS) reminded me of a great little programme that we had running in Samoa in the late nineties. Farmer Field Schools began as a training and extension approach for integrated pest management of rice, largely supported by FAO in Asia. Since then FFS have been used for a variety of agricultural crops, systems and problems, including livestock, and have spread to other regions of the world.
The article prompted me to reflect on earlier efforts that we made at the Alafua Campus of the University of the South Pacific in Samoa, using similar “field-based” approaches to help students and farmers (as well as researchers and extensionists!) learn about taro diversity and improvement. In 1993 Samoa was devastated by an outbreak of taro leaf blight. Initial responses using pesticides and cultural methods were futile and while introduced “resistant” varieties helped, the disease was still a major problem.
Continue reading “Farmer Field Schools in the Pacific and beyond”
Rescuing the American chestnut
You know, these Nibbles (the short, soundbite-type things which appear at the top of the right sidebar of this page) are fun to do, but sometimes you end up downplaying, or over-simplifying, an important, interesting — and interestingly complex — story. Take what I said about the American chestnut a few days ago. The recent history of Castanea dentata is proud and tragic ((Looking further back, it also played an important role in native America agroforestry.)), and efforts to bring it back from the brink of annihilation well-nigh heroic. To imply, as I did, that these efforts were confined to hybridizing the American with the Chinese chestnut was justified only by the necessity for extreme brevity. In fact, of course, it is not just hybridization but repeated back-crossing. And not just interspecific crossing but also painstaking crossing among the few remaining pure American chestnuts, as reported in the article that prompted me to revisit the original story and hopefully make amends for my earlier flippancy.