Table 1. Effect of different amendments on available nitrogen, phosphorous, potassium and soil organic carbon in soil, N concentration in wheat grains and straw.

(Statistically significant at p = 0.05. Means followed by common alphabets are not significantly different among themselves by DMRT.

Treatments	Available N (kg ha−1) after harvesting of the crop	Available P (kg ha−1) after harvesting of the crop	Available K (kg ha−1) after harvesting of the crop	Nitrogen content in grain (%)	Nitrogen content in straw (%)	Agronomic efficiency of N (kg ha−1)	Production efficiency of N (kg kg−1)	Apparent N recovery (%)
T-1	141g	17.9g	214c	1.5g	0.32h	0	0	0
T-2	173def	19.7f	221b	1.91f	0.39g	9.1	25.8	35.2
T-3	172ef	22.5e	222b	2.09c	0.65a	12.9	19.8	65.2
T-4	171f	23.7d	222b	2.06cde	0.62b	11.6	18.5	62.8
T-5	177cde	23.7de	223b	2.02de	0.56c	9.8	19.8	49.4
T-6	187b	30.4a	228a	1.97b	0.53d	9.1	16.5	55.4
T-7	195a	27.8b	229a	1.98a	0.63ab	12.5	15.4	80.8
T-8	180c	26.9cb	229a	1.92b	0.54d	10.1	17.4	57.7
T-9	181cb	27.58bc	227a	2.02cd	0.41f	9.6	21.5	44.8
T-10	178cd	26.8c	229a	1.91e	0.44e	10.7	24	44.5
Statistical significance (F test)	Significant	Significant	Significant	Significant	Significant	–	–	–
C.D.	5.55	1.58	3.30	0.10	0.02	–	–	–
SE (m)	1.85	0.53	1.10	0.03	0.01	–	–	–
SE (d)	2.62	0.75	1.56	0.05	0.01	–	–	–
C.V.	1.83	3.70	0.85	2.88	2.20	–	–	–