id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72778	Bäckman, Stefan T.; Vermeulen, S.; Taavitsainen, V.-M.	Long-term fertilizer field trials: comparison of three mathematical response models	1997	11	.pdf	application/pdf	4941	286	60	Quadratic model LRP model Exponential model f -b X = X i„ (_E*E_) X=X= * 2c c Economic analysis Making marginal cost equal to marginal reve- nue gives us the maximal economic return. Note that the intercepts (parameter a, LRP and quadratic model) for oats and barley are higher than those for wheat.	cache/afs-72778.pdf	txt/afs-72778.txt