id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72446	Peltonen, Jari	A perspective for setting the research priorities for the productivity of future crop production in Finland	1992	6	.pdf	application/pdf	2901	262	62	Chemical composition, yield productivity (grams ofbiomass per gram ofphotosynthate), and nitrogen requirements (milligrams ofN per gram ofphotosynthate) for crop yield of 19 crop species. The author proposes that future research work on crop production should concentrate on alleviating the problems associated with overwintering and frost, early summer drought and rainy autumn in order to enhance the competitiveness of field crop pro- duction in Finland.	cache/afs-72446.pdf	txt/afs-72446.txt