Table 2.

Raw data of soil total organic carbon concentrations, total nitrogen concentrations, nitrate nitrogen concentrations, total organic carbon stocks, and total nitrogen stocks over 8 years from the Salinas Organic Cropping Systems experiment in Salinas, California. This includes data from all eight systems in the experiment. The related article in PLoS ONE [1] only included data from five of the eight systems with optimal seeding rates for weed suppression. A Microsoft Excel version of the table is available in the supplementary material (Supplementary Table 1).

Overview of the data1									Soil Carbon and Nitrogen Concentrations			Soil Carbon and Nitrogen Stocks2
Block (i.e. replicate)	Year	Symbol color & shape in PloS One article figures3	System ID in Data in Brief article4	System ID & description used in associated article in PLoS ONE5	Compost added6	Winer cover cropping frequency7	Cover crop type8	Cover crop seeding rate8	Total Organic C	Total N	Nitrate N	Total Organic C	Total N
									mg kg−1 soil			Mg ha−1
1	0		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	12,615	1300	53	52	5.4
2	0		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	11,883	1300	36	49	5.4
3	0		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	11,083	1200	34	46	5.0
4	0		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	10,622	1200	32	44	5.0
1	0		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	12,083	1200	33	50	5.0
2	0		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	14,430	1500	44	60	6.2
3	0		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	11,849	1300	39	49	5.4
4	0		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	12,867	1400	40	53	5.8
1	0	NA	3*	NA	Yes	Every winter	Leg-rye	1x	13,815	1400	37	57	5.8
2	0	NA	3*	NA	Yes	Every winter	Leg-rye	1x	11,367	1100	27	47	4.6
3	0	NA	3*	NA	Yes	Every winter	Leg-rye	1x	10,000	1100	37	42	4.6
4	0	NA	3*	NA	Yes	Every winter	Leg-rye	1x	11,953	1300	41	50	5.4
1	0		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	13,760	1400	35	57	5.8
2	0		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	12,147	1300	35	50	5.4
3	0		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	14,151	1500	48	59	6.2
4	0		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	10,874	1200	35	45	5.0
1	0		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	9547	1100	24	40	4.6
2	0		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	10,660	1200	32	44	5.0
3	0		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	10,700	1200	34	44	5.0
4	0		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	11,888	1300	46	49	5.4
1	0	NA	6*	NA	Yes	Every winter	Mustard	3x	13,588	1400	44	56	5.8
2	0	NA	6*	NA	Yes	Every winter	Mustard	3x	11,115	1200	50	46	5.0
3	0	NA	6*	NA	Yes	Every winter	Mustard	3x	11,783	1300	33	49	5.4
4	0	NA	6*	NA	Yes	Every winter	Mustard	3x	12,079	1400	46	50	5.8
1	0		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	13,067	1400	53	54	5.8
2	0		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	10,367	1100	26	43	4.6
3	0		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	12,033	1300	33	50	5.4
4	0		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	12,167	1300	54	51	5.4
1	0	NA	8*	NA	Yes	Every winter	Rye	3x	12,660	1300	41	53	5.4
2	0	NA	8*	NA	Yes	Every winter	Rye	3x	12,253	1300	37	51	5.4
3	0	NA	8*	NA	Yes	Every winter	Rye	3x	10,233	1100	30	43	4.6
4	0	NA	8*	NA	Yes	Every winter	Rye	3x	9533	1000	36	40	4.2
1	1		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4975	700	20	21	2.9
2	1		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	2894	600	11	12	2.5
3	1		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	2132	500	13	9	2.1
4	1		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4018	600	9	17	2.5
1	1		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6053	700	16	26	3.0
2	1		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	4432	600	14	19	2.6
3	1		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	2794	600	22	13	2.6
4	1		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6348	800	20	27	3.4
1	1	NA	3*	NA	Yes	Every winter	Leg-rye	1x	4611	600	32	20	2.6
2	1	NA	3*	NA	Yes	Every winter	Leg-rye	1x	2793	500	13	12	2.1
3	1	NA	3*	NA	Yes	Every winter	Leg-rye	1x	3756	700	17	16	3.0
4	1	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8157	1000	41	34	4.2
1	1		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	3957	600	25	18	2.6
2	1		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	3570	600	20	16	2.6
3	1		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	3312	600	21	14	2.6
4	1		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7557	1000	26	32	4.2
1	1		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	2484	500	10	12	2.1
2	1		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	4093	600	26	18	2.6
3	1		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	2894	600	23	13	2.6
4	1		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	5667	900	19	24	3.8
1	1	NA	6*	NA	Yes	Every winter	Mustard	3x	5057	600	42	22	2.6
2	1	NA	6*	NA	Yes	Every winter	Mustard	3x	3948	600	19	17	2.6
3	1	NA	6*	NA	Yes	Every winter	Mustard	3x	3256	600	12	14	2.6
4	1	NA	6*	NA	Yes	Every winter	Mustard	3x	4720	600	16	20	2.6
1	1		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	4312	600	21	18	2.6
2	1		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	4394	700	10	19	3.0
3	1		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	4120	600	32	18	2.6
4	1		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	6020	800	29	26	3.4
1	1	NA	8*	NA	Yes	Every winter	Rye	3x	4329	600	30	19	2.6
2	1	NA	8*	NA	Yes	Every winter	Rye	3x	2684	500	15	12	2.2
3	1	NA	8*	NA	Yes	Every winter	Rye	3x	2894	600	9	13	2.5
4	1	NA	8*	NA	Yes	Every winter	Rye	3x	5494	700	12	23	2.9
1	2		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	8267	800	15	34	3.3
2	2		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	7327	700	16	30	2.9
3	2		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5446	600	19	23	2.5
4	2		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6065	600	15	25	2.5
1	2		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	9967	900	15	42	3.8
2	2		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6227	600	21	27	2.6
3	2		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	8148	800	22	34	3.4
4	2		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	10,371	1100	26	43	4.6
1	2	NA	3*	NA	Yes	Every winter	Leg-rye	1x	10,367	1000	27	44	4.2
2	2	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9105	900	22	38	3.8
3	2	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7375	700	27	31	3.0
4	2	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9912	900	32	42	3.8
1	2		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9439	900	33	40	3.8
2	2		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9839	900	26	41	3.8
3	2		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	8130	800	28	34	3.5
4	2		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	12418	1200	39	52	5.0
1	2		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	6746	600	18	29	2.6
2	2		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	8342	800	31	35	3.4
3	2		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	10,467	1000	23	44	4.2
4	2		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	12,539	1300	29	52	5.4
1	2	NA	6*	NA	Yes	Every winter	Mustard	3x	10,275	1000	26	43	4.2
2	2	NA	6*	NA	Yes	Every winter	Mustard	3x	11,167	1200	28	46	5.0
3	2	NA	6*	NA	Yes	Every winter	Mustard	3x	7891	800	21	34	3.4
4	2	NA	6*	NA	Yes	Every winter	Mustard	3x	11,280	1200	28	47	5.0
1	2		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8705	800	25	36	3.5
2	2		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7342	700	24	31	3.0
3	2		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	9980	900	24	42	3.9
4	2		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8705	900	36	37	3.9
1	2	NA	8*	NA	Yes	Every winter	Rye	3x	10,675	1000	24	45	4.2
2	2	NA	8*	NA	Yes	Every winter	Rye	3x	8030	700	26	34	3.0
3	2	NA	8*	NA	Yes	Every winter	Rye	3x	9139	700	20	38	3.0
4	2	NA	8*	NA	Yes	Every winter	Rye	3x	8748	900	23	37	3.8
1	3		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6700	700	13	28	2.9
2	3		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6895	600	7	29	2.5
3	3		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5267	500	6	22	2.1
4	3		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6344	500	3	26	2.1
1	3		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	8275	600	5	35	2.6
2	3		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7933	700	6	34	3.0
3	3		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	9263	800	8	39	3.4
4	3		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	8067	700	9	34	3.0
1	3	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9075	800	17	38	3.4
2	3	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7459	800	8	32	3.4
3	3	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9427	800	8	40	3.4
4	3	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8486	700	14	36	3.0
1	3		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9826	800	11	42	3.4
2	3		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	8337	700	9	35	3.0
3	3		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	8398	700	10	35	3.1
4	3		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6483	600	10	28	2.6
1	3		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7500	700	7	32	3.0
2	3		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	9156	800	12	39	3.4
3	3		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7500	600	11	32	2.6
4	3		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	10,105	900	17	42	3.8
1	3	NA	6*	NA	Yes	Every winter	Mustard	3x	9663	800	13	41	3.4
2	3	NA	6*	NA	Yes	Every winter	Mustard	3x	10,463	900	18	43	3.8
3	3	NA	6*	NA	Yes	Every winter	Mustard	3x	8935	800	11	38	3.4
4	3	NA	6*	NA	Yes	Every winter	Mustard	3x	8695	700	12	37	3.0
1	3		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7683	700	8	32	3.1
2	3		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8035	700	9	34	3.0
3	3		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	9139	800	12	38	3.5
4	3		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	9333	800	14	40	3.5
1	3	NA	8*	NA	Yes	Every winter	Rye	3x	9521	800	12	40	3.4
2	3	NA	8*	NA	Yes	Every winter	Rye	3x	9595	900	8	41	3.8
3	3	NA	8*	NA	Yes	Every winter	Rye	3x	8696	800	13	37	3.4
4	3	NA	8*	NA	Yes	Every winter	Rye	3x	8652	700	15	36	3.0
1	4		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5171	500	12	22	2.1
2	4		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4333	500	11	18	2.1
3	4		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4274	500	8	18	2.1
4	4		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5799	600	8	24	2.5
1	4		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7178	800	10	31	3.4
2	4		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	5758	600	15	26	2.7
3	4		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	5127	500	22	23	2.2
4	4		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6807	700	15	29	3.0
1	4	NA	3*	NA	Yes	Every winter	Leg-rye	1x	5888	600	27	26	2.6
2	4	NA	3*	NA	Yes	Every winter	Leg-rye	1x	5051	600	10	22	2.6
3	4	NA	3*	NA	Yes	Every winter	Leg-rye	1x	5327	600	11	23	2.6
4	4	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8022	800	19	34	3.4
1	4		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6188	600	22	28	2.7
2	4		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6410	700	19	28	3.1
3	4		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6599	700	19	28	3.1
4	4		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7067	700	34	31	3.1
1	4		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	4420	400	11	21	1.9
2	4		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7323	700	17	32	3.1
3	4		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	6781	700	11	30	3.1
4	4		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7638	800	17	33	3.5
1	4	NA	6*	NA	Yes	Every winter	Mustard	3x	6629	600	20	29	2.6
2	4	NA	6*	NA	Yes	Every winter	Mustard	3x	5735	600	10	25	2.6
3	4	NA	6*	NA	Yes	Every winter	Mustard	3x	5389	600	13	24	2.6
4	4	NA	6*	NA	Yes	Every winter	Mustard	3x	7483	700	16	32	3.0
1	4		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	4537	500	12	21	2.4
2	4		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	5629	600	7	25	2.7
3	4		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	5210	600	16	24	2.7
4	4		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8720	800	15	37	3.5
1	4	NA	8*	NA	Yes	Every winter	Rye	3x	8740	800	17	37	3.4
2	4	NA	8*	NA	Yes	Every winter	Rye	3x	7023	700	15	30	3.0
3	4	NA	8*	NA	Yes	Every winter	Rye	3x	5858	600	12	25	2.6
4	4	NA	8*	NA	Yes	Every winter	Rye	3x	7395	700	8	31	3.0
1	5		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5756	600	10	24	2.5
2	5		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4798	500	9	20	2.1
3	5		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	3867	400	7	16	1.7
4	5		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	7110	700	27	30	2.9
1	5		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6136	600	9	27	2.6
2	5		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	6496	600	12	29	2.7
3	5		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7139	700	13	31	3.0
4	5		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7158	700	15	31	3.0
1	5	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7809	700	21	33	3.0
2	5	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8936	900	19	37	3.8
3	5	NA	3*	NA	Yes	Every winter	Leg-rye	1x	6725	600	17	29	2.6
4	5	NA	3*	NA	Yes	Every winter	Leg-rye	1x	6456	600	29	28	2.6
1	5		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	8686	800	23	38	3.5
2	5		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7383	700	26	32	3.1
3	5		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6394	600	20	28	2.8
4	5		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	8839	800	26	38	3.4
1	5		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	6577	600	13	29	2.6
2	5		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	5958	600	21	27	2.7
3	5		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	5835	500	18	27	2.3
4	5		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	9744	900	17	41	3.9
1	5	NA	6*	NA	Yes	Every winter	Mustard	3x	9494	900	23	40	3.8
2	5	NA	6*	NA	Yes	Every winter	Mustard	3x	7856	700	20	33	3.0
3	5	NA	6*	NA	Yes	Every winter	Mustard	3x	6058	600	14	26	2.6
4	5	NA	6*	NA	Yes	Every winter	Mustard	3x	4567	500	12	20	2.2
1	5		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7528	700	20	32	3.2
2	5		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	9609	900	15	40	3.8
3	5		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7289	700	18	31	3.1
4	5		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8553	800	20	37	3.5
1	5	NA	8*	NA	Yes	Every winter	Rye	3x	8232	800	22	35	3.4
2	5	NA	8*	NA	Yes	Every winter	Rye	3x	8372	800	15	36	3.4
3	5	NA	8*	NA	Yes	Every winter	Rye	3x	5880	500	10	25	2.2
4	5	NA	8*	NA	Yes	Every winter	Rye	3x	7194	700	13	30	3.0
1	6		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6167	550	19	26	2.3
2	6		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6983	650	21	29	2.7
3	6		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5508	510	16	23	2.1
4	6		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6029	550	15	25	2.3
1	6		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7633	670	25	33	2.9
2	6		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	11,747	1040	31	49	4.4
3	6		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	9579	890	29	40	3.8
4	6		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	9093	820	22	39	3.5
1	6	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9387	820	37	40	3.5
2	6	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9874	880	64	41	3.7
3	6	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7800	710	37	33	3.0
4	6	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9006	820	33	38	3.5
1	6		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	11,102	1010	38	47	4.3
2	6		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	10,614	980	44	44	4.2
3	6		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9018	810	57	38	3.6
4	6		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7619	700	37	33	3.1
1	6		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7133	630	40	32	2.8
2	6		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	11,433	1030	36	48	4.3
3	6		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7900	740	44	35	3.2
4	6		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	9444	880	37	40	3.8
1	6	NA	6*	NA	Yes	Every winter	Mustard	3x	9383	830	33	40	3.6
2	6	NA	6*	NA	Yes	Every winter	Mustard	3x	9174	820	55	38	3.5
3	6	NA	6*	NA	Yes	Every winter	Mustard	3x	8344	790	38	35	3.4
4	6	NA	6*	NA	Yes	Every winter	Mustard	3x	8129	770	54	35	3.3
1	6		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8160	720	41	34	3.2
2	6		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	11,218	1010	32	46	4.2
3	6		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7914	730	35	34	3.2
4	6		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	7900	740	40	34	3.3
1	6	NA	8*	NA	Yes	Every winter	Rye	3x	9960	880	44	42	3.8
2	6	NA	8*	NA	Yes	Every winter	Rye	3x	9667	880	35	41	3.8
3	6	NA	8*	NA	Yes	Every winter	Rye	3x	8744	810	34	37	3.4
4	6	NA	8*	NA	Yes	Every winter	Rye	3x	8918	820	32	37	3.5
1	7		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	3414	320	5	15	1.4
2	7		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4732	460	5	20	2.0
3	7		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5125	500	5	22	2.1
4	7		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	6484	610	9	27	2.6
1	7		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	4439	420	5	21	2.0
2	7		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7944	720	8	35	3.2
3	7		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7740	710	9	33	3.1
4	7		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	8667	790	7	37	3.5
1	7	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8475	750	20	37	3.4
2	7	NA	3*	NA	Yes	Every winter	Leg-rye	1x	9133	860	18	39	3.7
3	7	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7123	650	14	31	2.9
4	7	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8767	840	27	38	3.7
1	7		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7801	740	21	35	3.3
2	7		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7710	740	23	33	3.3
3	7		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	12,294	1170	22	50	5.0
4	7		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9367	870	20	40	3.7
1	7		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	6497	630	21	30	2.8
2	7		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	14,927	1400	23	61	5.7
3	7		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7410	690	18	33	3.1
4	7		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7567	700	20	33	3.1
1	7	NA	6*	NA	Yes	Every winter	Mustard	3x	10,775	980	17	46	4.2
2	7	NA	6*	NA	Yes	Every winter	Mustard	3x	8755	810	16	37	3.5
3	7	NA	6*	NA	Yes	Every winter	Mustard	3x	8633	820	16	37	3.6
4	7	NA	6*	NA	Yes	Every winter	Mustard	3x	9333	870	25	40	3.8
1	7		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8630	800	17	36	3.6
2	7		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	11,406	1060	16	47	4.4
3	7		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	10171	970	12	42	4.2
4	7		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8600	850	14	37	3.7
1	7	NA	8*	NA	Yes	Every winter	Rye	3x	12,400	1160	21	52	4.9
2	7	NA	8*	NA	Yes	Every winter	Rye	3x	11,006	1020	19	46	4.4
3	7	NA	8*	NA	Yes	Every winter	Rye	3x	7839	720	15	34	3.1
4	7	NA	8*	NA	Yes	Every winter	Rye	3x	8075	720	9	34	3.1
1	8		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5186	510	27	22	2.2
2	8		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4006	440	29	17	1.9
3	8		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	4279	440	21	18	1.9
4	8		1*	1-No Compost + Legume-rye 4th Year	No	Every 4th winter	Leg-rye	3x	5833	590	30	24	2.5
1	8		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	5433	530	30	24	2.4
2	8		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	8475	850	36	37	3.7
3	8		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	5733	540	26	26	2.5
4	8		2*	2-Compost + Legume-rye 4th Year	Yes	Every 4th winter	Leg-rye	3x	7623	760	33	33	3.3
1	8	NA	3*	NA	Yes	Every winter	Leg-rye	1x	8110	780	38	36	3.5
2	8	NA	3*	NA	Yes	Every winter	Leg-rye	1x	6867	670	35	30	3.0
3	8	NA	3*	NA	Yes	Every winter	Leg-rye	1x	6971	690	35	31	3.0
4	8	NA	3*	NA	Yes	Every winter	Leg-rye	1x	7359	720	32	32	3.2
1	8		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	9210	880	50	40	3.9
2	8		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	6395	640	39	28	2.9
3	8		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7090	710	48	31	3.2
4	8		4*	3-Compost + Legume-rye annually	Yes	Every winter	Leg-rye	3x	7359	730	42	32	3.2
1	8		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7520	730	37	34	3.2
2	8		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	8871	830	37	38	3.6
3	8		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	6001	600	30	28	2.7
4	8		5*	4-Compost + Mustard annually	Yes	Every winter	Mustard	1x	7267	700	47	32	3.1
1	8	NA	6*	NA	Yes	Every winter	Mustard	3x	8627	780	33	38	3.5
2	8	NA	6*	NA	Yes	Every winter	Mustard	3x	7603	760	35	33	3.3
3	8	NA	6*	NA	Yes	Every winter	Mustard	3x	6767	690	40	30	3.1
4	8	NA	6*	NA	Yes	Every winter	Mustard	3x	6991	680	35	31	3.1
1	8		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	6448	610	36	28	2.9
2	8		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	6903	680	38	30	3.0
3	8		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	8400	800	36	36	3.5
4	8		7*	5-Compost + Rye annually	Yes	Every winter	Rye	1x	10,200	920	40	43	4.0
1	8	NA	8*	NA	Yes	Every winter	Rye	3x	7855	740	38	35	3.3
2	8	NA	8*	NA	Yes	Every winter	Rye	3x	6348	610	34	29	2.8
3	8	NA	8*	NA	Yes	Every winter	Rye	3x	7401	720	33	32	3.1
4	8	NA	8*	NA	Yes	Every winter	Rye	3x	7567	750	27	32	3.2

¹The data provided in this table is from the Salinas Organic Cropping Systems (SOCS) study in Salinas, California. This includes soil total organic carbon, total nitrogen and nitrate-N data for all 8 systems in the SOCS study at the beginning of the study (year 0) and for subsequent 8 years. However, the analysis for only 5 systems with optimal seeding rates for weed suppression were included in the related article in PLoS ONE [1]. The experimental design was a randomized complete block with 4 blocks (i.e., replicates). These data are provided to give readers an opportunity use the data for future meta-analyses, or analysis of confidence intervals, effect sizes, etc. in the Explanatory Software for Confidence Intervals (ESCI) produced by Geoff Cumming. ESCI is freely available at https://thenewstatistics.com/itns/esci/

²To account for changes in soil bulk density over time, organic carbon and nitrogen stocks were calculated using the Maximum Equivalent Soil Mass Method [7].

³The symbols, shapes, and colors used in the PLoS ONE article. Note that in the PLoS ONE article the data for only 5 systems were included, but in this Data in Brief article, the data for all 8 systems is included. NA = not applicable because the system was not included in the PLoS ONE article.

⁴In this Data in Brief article, these numbers (1 to 8) are used for the 8 systems.

⁵In the PLoS ONE article only 5 systems with seeding rates that provided optimal weed suppression were included. NA= not applicable because these 3 systems were not included in the PLoS ONE article.

⁶The application rate for compost, which was applied prior to each vegetable crop, was 7.6 Mg ha⁻¹ on an oven dry weight basis. The compost was made from urban yard waste.

⁷Winter cover cropping period was from October or November to February or March.

⁸See Table 1 for details on the cover crop types and seeding rates.