Different Rates of Chicken Manure and NPK 15-15-15 Enhanced Performance of Sunflower (Helianthus annuus L.) on Ferruginous Soil

Table 4

Effect of different rates of chicken manure and NPK fertilizers on girth (cm) of sunflower plants.

Treatments	Main cropping				Residual
	Weeks after sowing				Weeks after sowing
	4	6	8	10	4	6	8	10
Control	2.4^ab ± 0.17	2.9^b ± 0.04	3.5^c ± 0.31	4.1^c ± 0.93	2.47^ab ± 0.18	2.50^d ± 0.09	4.13^d ± 0.07	7.32^e ± 0.17
PM1	2.4^bc ± 0.24	3.3^ab ± 0.13	3.6^bc ± 0.18	4.9^abc ± 0.17	2.41^bc ± 0.19	3.21^e ± 0.04	5.25^cd ± 0.46	8.15^cde ± 0.16
PM2	3.3^a ± 0.01	3.7^a ± 0.18	4.8^a ± 0.57	5.8^a ± 0.20	3.33^a ± 0.30	3.75^cd ± 0.03	6.97^cd ± 0.60	9.69^bc ± 0.27
PM3	2.9^abc ± 0.18	3.4^ab ± 0.85	4.1^abc ± 0.03	4.9^abc ± 0.83	2.9^abc ± 0.20	3.70^cd ± 0.05	7.69^bcd ± 0.83	10.27^ab ± 0.68
PM4	3.0^abc ± 0.70	3.9^a ± 0.44	4.7^ab ± 0.05	5.7^a ± 0.66	3.04^abc ± 0.17	4.60^a ± 0.10	8.74^a ± 0.03	11.27^a ± 0.85
NPK1	2.5^abc ± 0.08	3.2^ab ± 0.66	3.9^abc ± 0.80	4.6^bc ± 0.51	2.52^abc ± 0.40	3.60^b ± 0.04	6.32^cd ± 1.06	8.01^de ± 0.10
NPK2	3.2^ab ± 0.25	3.7^a ± 0.02	4.5^ab ± 0.51	5.1^ab ± 1.83	3.27^ab ± 0.38	3.80^b ± 0.02	7.69^bc ± 0.37	8.97^cd ± 0.16
NPK3	2.3^c ± 0.46	3.2^ab ± 0.74	3.9^abc ± 0.06	4.7^bc ± 0.89	2.39^c ± 0.07	2.70^c ± 0.08	7.77^ab ± 0.28	10.76^ab ± 0.96

PM1 = chicken manure 5 t·ha⁻¹; PM2 = chicken manure 10 t·ha⁻¹; PM3 = chicken manure 15 t·ha⁻¹; PM4 = chicken manure 5 t·ha⁻¹; NPK1 = NPK 30 kg·N·t·ha⁻¹; NPK2 = NPK 60 kg·N·t·ha⁻¹; NPK3 = NPK 90 kg·N·t·ha⁻¹. Means ± standard deviations with the same letter on the same column are not significantly different at using DMRT.