Five years have now passed since the first symposium on frankiae was held at Harvard Forest, Petersham, Massachusetts, USA and the inauguration of the term actinorhiza.
The "e;International Symposium on Scleroderris Canker of Conifers"e; held June 21-24, 1983 in Syracuse, New York was the result of mutual interest expressed by the USDA Forest Service, the Canadian Forestry Service, and the State Uni- versity of New York College of Environmental Science and Forestry (SUNY ESF).
The success of shifting cultivation systems developed by subsistence farmers testifies to the resilience of the "e;natural"e; soil-plant ecosystems to recover from the offtake of nutrients in crops and loss of soil struc- ture.
As J understand it, a book Preface is where the author explains to the reader how the book in hand came about, something of the personal reasons for having inflicted such extended duress on one's self to complete the manllscript.
The fifth meeting of scientists working with Frankia and actinorhizal plants was held at Montmorency Forest of Laval University in Quebec from August 6-8, 1984.
The mission of the International Fertilizer Development Center is to increase food production through the improvement of fertilizers and fertilizer practices for the developing countries with special emphasis on tropical and subtropical agriculture.
Plantations of a wide range of tree species have assumed an important place in our world, providing wood for industry, fuelwood and animal fodder, protection from adverse environments and for the soil, as well as amenity and aesthetically pleasing landscapes.
This volume presents the proceedings of the Second International Sym- posium on Genetic Aspects ofPlant Minerai Nutrition, held in Madison, Wisconsin in 1985.
The steadily increasing cost of nitrogen fertilizer has resulted in more emphasis on basic and applied studies to improve nitrogen use efficiency in lowland rice.
The 22nd International Dairy Congress was the first to offer to participants the opportunity to present their work in the form of a poster, the object being to include more con- tributions in the programme than there was time available for oral presentations.
In analysing the development and achievements of Polish forestry and forest industries over the last four decades, it is necessary to take into consideration the situation prevailing after the end of the Second World War, when these sectors of the national economy were starting their activities.
On the occasion of its twenty-fifth anniversary, in 1985, the Netherlands Society for Grassland and Fodder Crops (NVWV) agreed to organize an International Symposium on a topic related to intensive grass and fodder production systems.
The Western Australian jarrah forest is unique, contammg some of the most beautiful flora in the world, more than 100 species of birds and some 50 mammals indigenous to this State.
Most forest tree species were considered recalcitrant a decade ago, but now with the improved in vitro techniques some progress has been made towards culture-of tree species.
Weeds and Science Technology addresses topics that include management of weeds, agricultural, aquatic, Technology for integrated weed management and weed use tools.
This volume certainly is a Conference Proceedings, the Proceedings of the NATO Advanced Research Workshop (ARW) on "e;Unsaturated Flow in Hydrologic Modeling"e; held at "e;Les Villages du Soleil"e; near ArIes, France from June 13 to 17, 1988.
