Treatment/Location Descriptions

CPER
=====

area	treatment
----	---------
19E	section 19 enclosed
19G	section 19 grazed pasture
5AE	section 5a enclosed
5AG	section 5a grazed pasture
7E	section 7 enclosed
7G	section 7 grazed pasture
E	east cultivated field
EE	east of east cultivated field
FN	earthwatch non-plowed pasture
FT	earthwatch plowed pasture
G1	grassland grazed pasture
G2	grassland grazed pasture
MC	midslope clay catena
MF	midslope fertilized
MN	midslope non-fertilized
N	north cultivated field
PF	pasture fertilized
PN	pasture non-fertilized
PP	pasture plowed non-fertilized
PPO	PP old anchors
S	south cultivated field
SC	swale clay catena
SF	swale fertilized
SN	swale non-fertilized
TC	topslope clay catena
W	set aside CRP

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KBS
=====

Treatment Summary Table

1	standard chemical input corn/soybean/wheat rotation conventionally tilled (corn/soybean prior to 1992)
2	standard chemical input corn/soybean/wheat rotation no-tilled (corn/soybean prior to 1992)
3	low chemical input corn/soybean/wheat rotation conventionally tilled (ridge till prior to 1994); legume winter cover except prior to wheat
4	zero chemical input corn/soybean/wheat rotation conventionally tilled (ridge till prior to 1994); legume winter cover except prior to wheat
5	Populus clones on short-rotation (6-7 year harvest cycle
6	continuous alfalfa, replanted every 6-7 years
7	early successional community on historically tilled soil
8	early successional community on never-tilled soil
DF	three deciduous forest stands, two old-growth and one 40-60 years post-cutting
CF	three conifer plantations, 40-60 years old
SF	three old-field sites 40+ years post-abandonment

YEAR	T1	T2	T3	T4
1989	corn	corn	wheat/vetch	wheat/vetch
1990	soybean	soybean	corn/vetch	corn/vetch
1991	corn	corn	soybean	soybean
1992	soybean	soybean	wheat/vetch	wheat/vetch
1993	corn	corn	corn/vetch	corn/vetch
1994	soybean	soybean	soybean	soybean
1995	wheat	wheat	wheat/clover	wheat/clover

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Barley Row Experiment
=======================

Data for modeling trace gas emissions in barley field Fort Collins, Colorado Experimental Design = Completely randomized design

Block 1	=	Rep # 1 located in block 1
Block 2	=	Rep # 2 located in block 2
Block 3	=	Rep # 3 located in block 3
Block 4	=	Rep # 4 located in block 4

Control = Control plots or zero N fertilizer plots
DCD = Plots received 90 kg urea-N / ha and Dicyandiamide was applied with urea at a rate of 9 kg / ha
Meister = Polyolefin coated urea (MEISTER-7) was applied to the plots at a rate of 90 kg N /ha
Urea = Plots received 90 kg urea-N/ha

Barley row = trace gas measurments were collected within the barley plants drill
Fertilizer band = trace gas samples were collected between the barley plant rows (Fertilizer N was applied between the barley row plants)

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Duncan, Puerto Rico
=====================

Data for modeling trace gas emissions in Duncan soil in Puerto Rico
Weekly samples collected from 10/05/1993 to 9/18/1995

Samples codes:

If plot # is 13 to 18 and date is from 10/5/93 to 3/8/94 then field is Sorguhm
If plot # is 1 to 6 and date is from 11/2/93 to 10/25/94 then field is Duncan Non Plow
If plot # is 7 to 12 and date is from 11/2/93 to 5/3/94 then field is Duncan Cultivated field (Plow)
If plot # is 7 to 12 and date is from 7/5/94 to 10/25/94 then field is Duncan Cultivated field (Plow and limed)
If plot # is 1 to 24 and date is from 10/31/94 to 9/18/95 then field is Duncan lime and N-Fertilizer study

Experimental design for three studies

Study # one

Sorguhm field is a completely randomized design

Study # two

Paired study
From 11/2/93 to 10/25/94 Six rings in the Duncan non plow field were paired with a cultivation treatment from 11/2/93 to 5/3/94. The soil was plowed on 11/2/93. Between 5/3/94 and 7/5/94 measurments were collected only on the non plow Duncan site. From 7/5/94 to 10/25/94, the same initial six rings in the Duncan non plowed were paired aging with The new cultivated site was plowed and received one lime application (7/5/94 to 10/25/94) On this paired study plots were paired in the following way
1 <=> 12 ; 2 <=> 11; 3 <=> 10 ; 4 <=> 9 ; 5 <=> 8; 6 <=> 7.

Study # three

Duncan limed and N-fertilizer study was a completely randomized block design

Treatments
LNF => Limed but not fertilized
NLNF => Control (No lime, No Fertilizer)
LF => Limed and Fertilized
NLF => Non limed but Fertilized

Table1 Plots that received the treatment LNF, NLNF, LF and NLF

	LNF	NLNF	LF	NLF
Block 1	1	12	13	24
Block 2	11	2	23	14
Block 3	3	15	22	10
Block 4	21	4	9	16
Block 5	5	20	8	17
Block 6	19	18	7	6

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Isabela, Puerto Rico
======================

Data for modeling trace gas emissions in Isabela, Puerto Rico Weekly samples collected from 10/23/1992 to 9/19/1995
Experimental Design = Completely randomized design

Fertilized Plots = 1, 5, 6, 7, 9, and 10.
Non Fertilized Plots = 2, 3, 4, 8, 11, and 12.
Plowed plots = 13, 14, 15, 16, 17, and 18.

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Lajas, Puerto Rico
====================

Data for modeling trace gas emissions in Lajas, Puerto Rico
Weekly samples collected from 11/17/1992 to 2/9/1995
Experimental Design = Completely randomized design

Fertilized Plots = 1, 4, 5, 6, 9, and 10.
Non Fertilized Plots = 2, 3, 7, 8, 11, and 12.

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Mayaguez, Puerto Rico
======================

Data for modeling trace gas emissions in Mayaguez, Puerto Rico
Weekly samples collected from 11/12/1992 to 2/6/1995
Experimental Design = Completely randomized design

Fertilized Plots = 1, 3, 5, 6, 8, and 12.
Non Fertilized Plots = 2, 4, 7, 9, 10, and 11.

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