id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_wpnfwgu5tfclhbaa2ndz36cx3q	R.J. Godwin	Precision Farming of Cereal Crops: a Review of a Six Year Experiment to develop Management Guidelines	2003.0	17	.pdf	application/pdf	9678	1524	74	yield variation between fields and seasons, which linked to soil variation and annual differences in rainfall detailed soil coring and cluster analysis of EMI and yield data provided an objective method to subdivide fields into management zones for targeted sampling of soil nutrients and pH; and for estimating replenishment levels of P and K fertilisers. Yield maps, however, were not a useful basis for determining a variable nitrogen application strategy. shown that the spatial variation in canopy development with a field can be effectively determined using aerial Benefits from spatially variable application of nitrogen outweigh costs of the investment in precision where 20% of the area could respond positively to spatially variable nitrogen would need to achieve a yield strips with those receiving the variable nitrogen application rate based on canopy size in Onion Field and Far Yield increases required for a break even scenario for different proportions of the field likely to benefit from precision farming	./cache/work_wpnfwgu5tfclhbaa2ndz36cx3q.pdf	./txt/work_wpnfwgu5tfclhbaa2ndz36cx3q.txt