Table 1.

Average seasonal temperatures (°C.) under different soil coverings with or without mulch.

Soil covering	Winter^z	Spring	Summer	Fall
Morning (9 am)
Bare soil	5.4	12.5	25.6	15.9
with mulch	6.8	12.5	23.8	17.1
Herbicide	5.2	12.3	24.8	15.4
with mulch	6.7	12.4	23.7	16.8
Plastic	6.4	13.7	26.8	16.8
with mulch	7.0	12.7	24.0	17.0
DeWitt	5.6	13.3	25.6	15.9
with mulch	6.8	12.4	23.6	16.5
Exxon	6.6	13.4	24.6	16.3
with mulch	6.9	12.5	23.9	17.0
Duon	5.1	12.9	24.5	15.3
with mulch	6.7	12.4	23.6	16.5
Typar	5.7	12.8	23.9	15.6
with mulch	6.8	12.5	23.7	17.0
VisQueen	5.1	12.4	24.4	15.3
with mulch	6.8	12.4	23.6	16.3
LSD^y (0.05)	0.4	0.3	0.8	0.7
Afternoon (2 pm)
Bare soil	7.9	16.8	28.4	17.1
with mulch	7.3	13.1	24.5	17.0
Herbicide	8.4	16.8	27.9	17.4
with mulch	7.4	13.0	24.4	17.3
Plastic	8.8	17.3	29.4	19.5
with mulch	7.5	13.1	24.5	17.5
DeWitt	8.1	16.2	28.0	18.4
with mulch	7.4	13.0	24.3	17.4
Exxon	8.1	15.6	27.2	17.2
with mulch	7.3	13.0	24.4	17.4
Duon	7.7	15.7	27.6	17.2
with mulch	7.4	13.1	24.3	17.2
Typar	7.3	15.3	26.0	16.7
with mulch	7.4	13.1	24.4	17.2
VisQueen	7.5	15.4	26.6	17.2
with mulch	7.3	13.2	24.3	17.1
LSD^y(0.05)	0.4	0.6	0.9	0.4

↵z Seasons: Winter = Dec., Jan., Feb.; Spring = March, April, May; Summer = June, July (no Aug.); Fall = Sep., Oct., Nov.
↵y Least Significant Difference for comparing means within rows or columns within a season