Table 4 Effect of fumigation programs on cucumber yield, income and economic benefits.

From: Assessment of the potential of a reduced dose of dimethyl disulfide plus metham sodium on soilborne pests and cucumber growth

Site

Treatmenta

Rate (g a.i. m−2)

Yieldb (Kg m−2)

%Yield increase

Gross Incomec (¥ m-2)

%Income increase

Fumigation costd (¥ m-2)

Net incomee (¥ m-2)

% Net income increase

Trial one, 2012

DMDS

60

5.87abf

93.7

19.14ab

96.9

1.25

17.89

85.0

MNa

42

4.85b

60.1

16.93b

74.2

1.60

15.33

58.5

DMDS + MNa

30 + 21

6.75a

122.8

22.33a

129.9

1.42

20.91

116.2

MB

40

6.66a

119.8

22.47a

132.0

4.07

18.40

90.3

Untreated

/

3.03c

/

9.67c

/

0.00

9.67

/

Trial two, 2013

DMDS

60

9.92a

75.3

23.31ab

86.5

1.25

22.06

76.5

MNa

42

8.79b

55.3

20.05b

60.4

1.60

18.45

47.6

DMDS + MNa

30 + 21

10.03a

77.2

25.00a

100.0

1.42

23.58

88.6

MB

40

10.12a

78.8

26.24a

109.9

4.07

22.17

77.4

Untreated

/

5.66c

/

12.50c

/

0.00

12.50

/

  1. aAbbreviations: DMDS = dimethyl disulfide; MNa = metam sodium; MB = methyl bromide.
  2. bCollected cucumber yield at each harvest time and summed together at the end of the trials.
  3. cCollected cucumber gross income at each harvest time and accumulated together at the end of the trials.
  4. dFumigation cost was the sum of tarp cost and fumigant cost, and the detailed information was listed in Table S2.
  5. eCucumber net income was calculated by the difference of cucumber gross income and fumigation cost.
  6. fIn each column, data are means of three repeats. Means followed by the same letter are not different (P = 0.05) according to the LSD test.
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