Identification of Yield-Limiting Nutrients for Sorghum (Sorghum bicolor (L.) Moench) Yield, Nutrient Uptake and Use Efficiency on Vertisols of Raya Kobo District, Northeastern Ethiopia

Table 6

Agronomic nitrogen and phosphorus efficiency of sorghum as influenced by omission of nutrients.

S/n	Treatments	AEN	AEP
1	PSZnB (−N)	—	−15.7
2	NSZnB (−P)	11.8	—
3	NPSZnB (−K)	18.5	8.9
4	NPZnB (−S)	13.9	3.0
5	NPSZn (−B)	18.1	8.5
6	NPSB (−Zn)	14.8	4.1
7	NPS (−ZnB)	15.6	5.1
8	RNP	18.6	4.3
9	NPKSZnB	19.7	10.6

Where AE_N and AE_P = nitrogen and phosphorus agronomic efficiency respectively.