Growth, Nitrogen and Phosphorus Uptake of Sorghum Plants as Affected by Green Manuring with Pea or Faba Bean Shell Pod Wastes Using 15N

Table 7: Proportions (%) and amounts (mg N pot^-1) of nitrogen derived from fertilizer (Ndff), soil (Ndfs) and green manure (Ndf_gm) in different plant parts of sorghum as affected by green manuring with pea pod shell wastes (PGM).

Treatment	Panicles			Roots					Whole Plant
	Ndff
	mg	%		mg	%		mg	%	mg	%
PGM₀	2.7±0.1^b	7.93± 0.05^a		1.26±0.02^c	5.55±0.05^a		9.3±0.13^b	8.26±0.05^a	13.2±0.2^c	7.83±0.04^a
PGM₅₀	2.7±0.06^b	5.01±0.03^b		1.90±0.05^b	4.29±0.05^b		9.3±0.19^b	5.22±0.03^b	13.9±0.22^b	5.03±0.03^b
PGM₁₀₀	3.1± 0.07^a	3.95±0.02^c		2.13±0.02^a	3.94±0.04^c		10.0±0.13^a	4.06 ±0.40^c	15.2±0.12^a	4.02± 0.02^c
PGM₁₅₀	2.7±0.1^b	3.47±0.03^d		1.96±0.04^b	3.65±0.05^d		9.6±0.33^b	3.66±0.08^d	14.2 ±0.25^b	3.63±0.05^d
LSD _0.05	0.25	0.11		0.10	0.15		0.65	0.16	0.62	0.11
Ndfs
PGM₀	31.3±1.01^b		92.07±0.05^a	21.4±0.35^c		94.45±0.05^a	102.9±1.0^b	91.74±0.05^a	155.7±1.51^c	92.17±0.04^a
PGM₅₀	31.0 ±0.72^b		58.27±0.36^b	32.4±0.78^b		73.11±0.87^b	103.6±2.1^b	57.95±0.34^b	163.6±2.55^b	59.23±0.31^b
PGM₁₀₀	35.1±0.76^a		45.94±0.23^c	36.3±0.33^a		67.12±0.71^c	111.0±1.4^a	45.07±0.37^c	178.4±1.40^a	47.33±0.19^c
PGM₁₅₀	31.1±1.13^b		40.29±0.37^d	33.5±0.67^b		62.11±0.81^d	106.5±3.7^ab	40.67±0.86^d	167.5±2.90^b	42.67±0.55^d
LSD _0.05	2.83		0.87	1.74		2.14	7.0	1.54	6.74	1.02
Ndf_gm
PGM₀	-		-	-	-		-	-	-	-
PGM₅₀	19.5±0.39^c		36.72±0.39^c	10.0±0.71^c	22.59±0.93^c		65.8±1.1^c	36.82±0.37^c	98.7±0.25^c	35.74±0.34^c
PGM₁₀₀	38.2±0.55^b		50.10±0.24^b	15.7±0.47^b	28.94±0.75^b		125.4±3.3^b	50.87±0.40^b	183.3±2.76^b	48.65±0.20^b
PGM₁₅₀	43.4±1.15^a		56.26±0.40^a	18.4± 0.5^a	34.24±0.86^a		145.6±2.6^a	55.67±0.94^a	210.8±3.17^a	53.71±0.60^a
LSD _0.05	2.45		1.13	1.81	2.71		7.96	2.00	7.77	1.32

Note: Means within a column followed by the same letter (a,b,c and d) are not significantly different (P<0.05). PGM₀: without GM; PGM₅₀, PGM₁₀₀, and PGM₁₅₀: pea pod shells added as GM at rates of 50, 100, and 150 kg N ha^-1, respectively.