Table 3 Effect of tillage, green manure and residue management practices on phosphorus content and uptake in wheat after five years of rice–wheat cropping system.

Treatments	P in grain(%)	P in straw (%)	P uptake by grain	P uptake by straw	Total P uptake	PHI
Treatments	P in grain(%)	P in straw (%)	(Kg ha^-1)			PHI
Rice establishment methods
PTR_Wo
PTR_W25	0.31	0.027	15.7	1.86	17.5	0.89
PTR_W0 + GM	0.3	0.033	16	2.28	18.3	0.97
PTR_W25 + GM	0.28	0.034	16.7	2.39	19	0.87
LSD (p = 0.05)	NS	NS	NS	NS	NS	NS
Wheat establishment methods
CTW_R0	0.28	0.03	14.8ab	2.07	16.9b	0.87
ZTW_R0	0.29	0.029	13.8b	1.96	15.8b	0.87
ZTW_R100	0.3	0.035	17.7a	2.49	20.2a	0.87
LSD (p = 0.05)	NS	NS	3.2	NS	3.1	NS
Interaction (AX B)	NS	NS	NS	NS	NS	NS

LSD Least significant difference, NS Non-significant, PTR_W0 Puddled transplanted rice with no wheat straw, PTR_W25 Puddled transplanted rice with 25% anchored wheat straw retained, GM Green manure, CTW_R0 Conventional tillage wheat with rice straw removed, ZTW_R0 Zero tillage wheat with rice straw removed, ZTW_R100 ZTW with rice straw retained as surface mulch.

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