Comparison of Raw Dairy Manure Slurry and Anaerobically Digested Slurry as N Sources for Grass Forage Production

Table 1

Average air temperature and total precipitation by month beginning at the start of plot implementation through the 3rd growing season.

Year	Month	Average air temp (°C)	Total precipitation (mm)
2009	April	9.2	61
	May	12.8	73
	June	16.8	19
	July	20.0	6
	August	18.0	13
	September	15.5	54
	October	9.9	100
	November	7.6	137
	December	1.4	35
2010	January	7.3	89
	February	7.0	44
	March	7.8	54
	April	9.4	55
	May	11.2	66
	June	14.4	61
	July	17.0	7
	August	17.1	22
	September	15.3	85
	October	10.6	85
	November	5.7	107
	December	5.3	184
2011	January	5.1	120
	February	3.4	80
	March	7.1	119
	April	7.2	79
	May	10.6	74
	June	14.1	39
	July	15.7	18
	August	16.4	3
	September	15.5	23
	October	10.2	71

Data from Washington State University AgWeatherNet, 21-Acres Station.