Table 2. Distribution of mean monthly precipitation (mm) at the experimental site during 2007–2011.

Year	Fallow period			Wheat growing season									Annual
	July	Aug.	Sep.	Oct.	Nov.	Dec.	Jan.	Feb.	Mar.	Apr.	May	June
2007–2008	197	83	56	48	2	7	29	8	13	32	24	106	604
2008–2009	54	124	65	15	14	1	11	23	20	13	137	47	524
2009–2010	47	97	52	25	38	2	9	21	11	40	44	57	443
2010–2011	75	77	41	45	4	2	3	13	15	29	36	25	363