Decomposition, nitrogen and carbon mineralization from food and cover crop residues in the central plateau of Haiti

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Table 6 Regression equations and statistics for change in residue C:N ratio over 112 days, where X = time in days after application

Residue species and placement	Equation	RMSE^a	R²
Maize, buried	y = 35.04e^−0.0040x + 20.94e^−0.0579x	2.184	0.985
Maize, surface	y = 40.56e^−0.0020x + 14.66e^−0.0586x	2.335	0.961
Sorghum sudangrass, buried	y = 21.44e^−0.0021x + 10.03e^−0.3034x	1.209	0.969
Sorghum sudangrass, surface	y = 31.27 − 0.2126x	1.411	0.944
Common bean, buried	y = 21.88 + 32.50e^−0.0283x	8.769	0.734
Common bean, surface	y = 17.26 + 41.10e^−0.0093x	2.235	0.966
Sunn hemp, buried	y = 11.04e^−0.0623x + 21.85e^−0.0048x	7.306	0.670
Sunn hemp, surface	y = 20.26e^−0.0006x + 9.98e^−0.3873x	1.418	0.939