Effect of Tillage Practices on Soil Properties and Crop Productivity in Wheat-Mungbean-Rice Cropping System under Subtropical Climatic Conditions

Table 8

Effect of tillage practice on available P, available K, and available S after wheat-mungbean-T. aman cropping sequence.

Treatment	P (ppm)				K (ppm)				S (ppm)
	2009	2010	2011	2012	2009	2010	2011	2012	2009	2010	2011	2012
ZT	13.99^a	14.96^a	18.54^a	20.32^a	89.7	89.7	93.6	105.3^a	14.00^a	16.12^a	17.23^a	18.89^a
MT	13.97^a	14.13^a	15.43^b	18.53^b	89.7	85.8	81.9	89.7^b	13.56^ab	15.27^ab	15.21^b	15.89^b
CT	13.21^a	13.92^a	14.90^b	14.86^c	85.8	78.0	81.9	78.0^c	13.32^ab	14.23^bc	14.43^b	14.45^b
DT	12.65^a	13.21^a	13.76^b	14.32^c	85.8	78.0	78.0	74.1^c	12.52^b	13.52^c	14.08^b	14.05^b
SE (±)	0.95	1.09	0.61	0.27	8.08	5.69	5.39	2.06	0.36	0.43	0.44	0.65

Figures in a column having common letter(s) do not differ significantly at 5% level of DMRT.
ZT: zero tillage, MT; minimum tillage, CT: conventional tillage, and DT: deep tillage.