Table 1. Yield and economic parameters for the 2001 fertility trial, Eddie Helms Farm, Donley County, TX. - Texas A&M AgriLife Research & Extension Center at Lubbock

Table 1. Yield and economic parameters for the 2001 fertility trial, Eddie Helms Farm, Donley County, TX.

Treatment	Bur cotton	Lint	Seed	Lint to seed	Lint	Seed	Lint	Lint	Seed	Total	Fertilizer	Gin	Net
	yield	turnout	turnout		yield	yield	loan value	value	value	value	cost	cost	value


	lb/acre	percent	percent	ratio	lb/acre	lb/acre	$/lb	$/acre	$/acre	$/acre	$/acre	$/acre	$/acre

70-0-0	2820	29.3	52.4	0.56	824	1478	0.4813	393.91	62.81	456.72	19.31	43.71	393.70	a
70-30-0	2870	29.1	51.0	0.57	832	1465	0.4725	393.41	62.25	455.66	26.70	44.48	384.48	ab
35-30-0	2550	29.5	52.2	0.57	752	1329	0.4838	363.96	56.47	420.44	15.09	39.52	365.83	ab
35-0-0	2334	29.5	53.3	0.55	688	1242	0.4832	331.33	52.79	384.12	11.69	36.18	336.25	bc
check	2091	29.6	51.7	0.57	620	1080	0.4785	296.53	45.91	342.43	0.00	32.42	310.02	c

CV, %	9.0	2.4	1.8	2.8	9.7	8.2	6.5	9.2	8.3	8.8	—–	9.0	9.4
OSL	0.0142	0.8781	0.1320	0.4980	0.0290	0.0102	0.9904	0.0263	0.0103	0.0200	—–	0.0142	0.0766
LSD 0.10	347	NS	NS	NS	109	165	NS	49.58	7.02	54.95	—–	5.37	51.12
For net value/acre, means within a column with the same letter are not significantly different at the 0.05 probability level.
CV – coefficient of variation
OSL – observed significance level.
LSD – least significant difference at 10% level, NS – not significant.

Note: some columns may not add up due to rounding error

Assumes:
$1.55/cwt ginning cost (bagging, ties and checkoff not included).
$85/ton for seed.
Value for lint based on CCC loan value for HVI analysis of grab samples submitted to the Texas Tech University International Textile Center.