Crop Production :: Rice :: System of Rice Intensification (SRI)

Rice :: SRI Cultivation :: Nutrient Management

STCR-IPNS Recommendation for Rice under SRI

Rice - SRI (1)

Soil	:	River alluvium (Noyyal series)	FN = 4.33 T – 0.53 SN – 0.68 ON
Season	:	Kharif	FP₂O₅= 2.08 T – 3.18 SP – 0.70 OP
Target	:	8 t ha^-1	FK₂O = 2.78 T – 0.30 SK – 0.63 OK

Initial soil test values (kg ha^-1)			*NPK (kg ha^-1) + GM @ 6.25 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**			*NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
200	18	300	187	75**	75**	183	75**	75**
240	22	400	166	73	69	162	64	68
280	26	500	145	61	39	141	52	38

**Maximum dose
Note: FN, FP₂O₅ and K₂O are fertilizer N, P₂O₅ and K₂O in kg ha^-1, respectively; T is the yield target in q ha-1; SN, SP and SK respectively are available N,P and K in kg ha^-1 and ON, OP and OK are the quantities of N, P and K supplied through organic manure in kg ha^-1.

Rice - SRI (2)

Soil	:	River alluvium (Noyyal series)	FN = 4.20 T – 0.45 SN – 0.68 ON
Season	:	Rabi	FP₂O₅ = 2.05 T – 2.65 SP – 0.66 OP
Target	:	8 t ha^-1	FK₂O = 2.85 T – 0.29 SK – 0.59 OK

Initial soil test values (kg ha^-1)			*NPK (kg ha^-1) + GM @ 6.25 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**			*NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
200	18	300	193	75**	75**	191	75**	75**
240	22	400	175	75**	75**	173	76	75**
280	26	500	157	72	50	155	65	51

**Maximum dose

Rice - SRI - White Ponni (3)

Soil	:	River alluvium (Noyyal series)	FN = 3.43 T – 0.34 SN – 0.64 ON
Season	:	Rabi	FP₂O₅ = 1.83 T – 3.24 SP – 0.61 OP
Target	:	6 t ha^-1	FK₂O = 1.98 T – 0.18 SK – 0.37 OK

Initial soil test values (kg ha^-1)			*NPK (kg ha^-1) + GM @ 6.25 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**			*NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
200	18	300	85	25*	32	86	25*	35
240	22	400	71	25*	25*	72	25*	25*
280	26	500	58	25*	25*	59	25*	25*

*Maintanance dose

Rice - SRI (4)

Soil	:	River alluvium (Ambasamudram series)	FN = 3.54T– 0.30 SN – 0.94 ON
Season	:	Rabi	FP₂O₅ = 1.37T– 0.41 SP – 0.80 OP
Target	:	7 t ha^-1	FK₂O = 2.61T – 0.64 SK –0.61 OK

Initial soil test values (kg ha^-1)			*NPK (kg ha^-1) + GM @ 6.25 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**			*NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
200	20	150	135	65	54	135	60	57
250	40	200	120	57	25*	120	52	25*
300	60	250	105	48	25*	105	43	25*

* Maintenance dose; SP^a- Bray P

Rice - SRI (5)

Soil	:	Red non calcareous (Vannapatti series)	FN = 3.49 T - 0.36 SN - 0.74 ON
Season	:	Rabi	FP₂O₅ =1.66 T - 2.76 SP - 0.69 OP
Target	:	7 t ha^-1	FK₂O = 2.19 T - 0.66 SK - 0.52 OK

Initial soil test values (kg ha^-1)			*NPK (kg ha^-1) + GM @ 6.25 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**			*NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + Azospirillum* @ 2 kg ha^-1 + PSB @ 2 kg ha^-1**
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
200	12	100	119	60	54	115	51	57
240	16	140	105	49	28	101	40	31
280	20	180	91	38	25*	87	29	25*

* Maintanance Dose

Updated on Jan 2023