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Blackgram :: Systems of Cultivation :: Rainfed

Nutrient Management

Apply fertilizer as per STCR ‐ IPNS recommendation
(OR)
Adopt blanket recommendation.
a. Soil test crop response based integrated plant nutrition system (STCR ‐ IPNS recommendation for specific yield target

Soil : Mixed black calcareous (Perianaickenpalayam series) Yield target: 0.9 ‐ 1.0 t ha^-1
FN = 10.84T‐0.39 SN
FP₂O₅ = 7.23T‐1.00 SP
FK₂O = 5.20T‐0.04 SK

Ready reckoners

Initial soil test values (kg ha^-1)			Yield target ‐ 0.9 t ha^-1			Yield target ‐ 1.0 t ha^-1
Initial soil test values (kg ha^-1)			NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + PSB @ 2 kg ha^-1			NPK (kg ha^-1) + FYM @ 12.5 t ha^-1 + PSB @ 2 kg ha^-1
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
160	12	300	13^*	25^*	13^*	13^*	28	13^*
180	14	325	13^*	25^*	13^*	13^*	26	13^*
200	16	350	13^*	25^*	13^*	13^*	25^*	13^*
220	18	375	13^*	25^*	13^*	13^*	25^*	13^*
240	20	400	13^*	25^*	13^*	13^*	25^*	13^*

^*maintenance 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, respectively and
FP₂O₅ = 7.23T‐1.00 SP
ON, OP and OK are the quantities of N, P & K supplied through organic manure in kg ha-1, respectively;

Initial soil test values (kg ha^-1)			Yield target ‐ 0.9 t ha^-1			Yield target ‐ 1.0 t ha^-1
Initial soil test values (kg ha^-1)			Urea, SSP, MOP (kg ha^-1) + FYM @ 12.5 t ha^-1 + PSB @ 2 kg ha^-1			Urea, SSP, MOP (kg ha^-1) + FYM @ 12.5 t ha^-1 + PSB @ 2 kg ha^-1
SN	SP	SK	FN	FP₂O₅	FK₂O	FN	FP₂O₅	FK₂O
160	12	300	28^*	156^*	22^*	28^*	175	22^*
180	14	325	28^*	156^*	22^*	28^*	163	22^*
200	16	350	28^*	156^*	22^*	28^*	156^*	22^*
220	18	375	28^*	156^*	22^*	28^*	156^*	22^*
240	20	400	28^*	156^*	22^*	28^*	156^*	22^*

(OR)

Blanket Recommendation

Recommended Quantity of Nutrient (kg /ha)					Quantity of fertilizer needed (kg /ha)
Recommended Quantity of Nutrient (kg /ha)					Situation I				Situation II
N	P₂O₅	K₂O	S^*	MN	Urea	SSP	MOP	MN	Urea	DAP	MOP	Gypsum	MN
12.5	25	12.5	20	5	28	156	21	5	6	55	21	85	5

Entire quantity of NPKS applied as basal in the last plough.
Before sowing apply 5 kg of TNAU MN mixture for pulses /ha as enriched in FYM at 1:10 ratio incubated for 30 days at friable moisture.

^*Note:Apply sulphur through gypsum if phosphorus is not applied as single Super Phosphate

TNAU MN Mixture

TNAU MN Mixture