A. Properties of butachlor

Chemical structure

Chemical class Chloroacetanilide

Chemical name [N-(butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide]

Molecular formula C17H26ClNO2

Molar mass 311.85 g・mol1

Solubility in water 20 mg l−1 (20˚C)

Vapour pressure 1.8 × 10−6 mm Hg (25˚C)

LD50 1740 mg・kg−1 (oral, rat)

B. Soil properties

Laterite

Soil type coastal

Alluvial

Water holding capacity (%)

30.0

54.0

49.0

pH (1:2.5)

5.5

6.7

7.7

Electrical conductivity (dsm−1)

0.06

1.55

0.48

Cation exchange capacity [c mol (p+) Kg−1]

9.1

4.7

16.9

Total nitrogen (%)

0.03

0.11

0.07

Available nitrogen (%)

0.0015

0.031

0.0196

Available Phosphorus (ppm Olsen P)

4.3

60.0

17.1

Organic carbon (%)

0.49

0.64

0.58

C:N ratio

17.5:1

5.7:1

8.5:1

Mechanical analysis

Sand (%)

72.2

17.6

22.2

Silt (%)

8.4

35.8

35.4

Clay (%)

19.4

46.6

42.4

Ca [c mol (p+) kg−1]

2.5

8.2

10.4

Mg [c mol (p+) kg−1]

0.6

2.3

1.0

Origin

Regional Research Farm, Jhargram, West Medinipur

No. 1 Farm, ICAR, Canning, 24 Pgs (S)

Univ. Research Farm, Mohanpur, Nadia

Soil taxonomy

Typic Haplustalf

Typic Haplaquept

Typic Haplaquent