id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72672	Sumelius, John	A response analysis of wheat and barley to nitrogen in Finland	1993	15	.pdf	application/pdf	7975	490	62	The type of crop response function Mitscherlich sug- gested in 1909is an exponential nonlinear function of type (12) y = m(l-ke Px )eBl ' D| eO2 ' 02 gSn, D n gSt, Di where y = yield level, kg/ha x = nitrogen fertilization m = asymptotic plateau Di = annual dummies (i = I ..n) Dt = technology dummy k, (J, si, 6t = parameters The yield level approaches asymptotically a pla- teau I evel, m, when x—> «>. Results The results for the estimated Mitscherlich function (12) as well as the square root functional form (9) and quadratic functional form (8) for wheat and barley yield on two different soil types are pre- sented in tables 2,3, 4 and 5.	cache/afs-72672.pdf	txt/afs-72672.txt