id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72464	Peltonen, Jari	Plant tissue tests for predicting nitrogen fertilizer requirements in spring wheat	1992	9	.pdf	application/pdf	5214	408	66	This review article examined whether the technique of tissue N testing can provide a useful method for optimizing wheat grain yields and pro- tein concentration. Critical N concentrations recommended at anthesis are: 12 g ofN kg' 1 in DM of the whole plant and 23 g of N kg' 1 in DM of the leaves (Peltonen 1992).	cache/afs-72464.pdf	txt/afs-72464.txt