Table 4. Silage volatile fatty acids (VFA) of intercropped corn and soybean as influenced by integrated nutrient management.

Treatment	pH	DM range(%)	Lactic acid(% of DM)	Acetic acid(% of DM)	Propionic acid(% of DM)	Butyric acid(% of DM)	Ammonia N(% of DM)
100%NPK	4.02	32.61	4.04a	1.62	0.16	0.03	2.06a
100%CM	4.03	32.24	4.02ab	1.63	0.16	0.03	2.07a
BF	4.02	32.52	3.91d	1.63	0.15	0.04	1.84b
50%CM+BF	4.03	32.49	3.92cd	1.63	0.16	0.03	1.83b
50%CM+50%NPK	4.03	32.77	4.01abc	1.62	0.16	0.03	2.08a
50%NPK+BF	4.03	32.33	3.93bcd	1.64	0.15	0.03	1.83b
50%CM+50%NPK+BF	4.02	32.78	4.03a	1.63	0.14	0.03	2.04a
50%CM	4.02	32.39	3.92cd	1.63	0.14	0.03	1.82b
50%NPK	4.02	32.25	3.92cd	1.62	0.15	0.03	1.83b
No Fertilizer	4.03	32.44	3.89d	1.64	0.15	0.04	1.81b
LSD(0.05)	ns	ns	0.10	ns	ns	ns	0.19
P Value	0.9999	0.6425	0.0120	0.9992	0.9246	0.9532	0.0065

Notes.

Mean values followed by the same letter in the same column are not significantly different at P < 0.05, based on least significant difference test (LSD).

NPK

nitrogen, phosphorus, potassium

CM

chicken manure

BF

biofertilizer

DM

dry matter