Effect of Tillage, Irrigation, and Nutrient Levels on Growth and Yield of Sweet Potato in Rice Fallow

Table 1

Weather conditions during crop growing period.

Month	Mean temperature (°C)		Mean relative humidity (%)		Rainfall (mm)
	2007-2008	2008-2009	2007-2008	2008-2009	2007-2008	2008-2009
July	29.6	29.1	83	85	183.3	227.3
August	28.9	28.5	86	87	346.4	297.6
September	28.2	28.5	88	86	535.3	617.8
October	27.6	28.0	76	76	131.1	31.8
November	25.5	24.9	78	70	15.9	5.9
December	22.0	23.4	62	72	0.0	0.0
January	22.1	23.9	67	70	24.4	0.0
February	23.2	27.1	70	66	33.8	0.0
March	28.7	29.2	69	66	5.1	0.0