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Table 4 Cotton yield and yield components in different treatments in 2014 and 2015

From: Soil replacement combined with subsoiling improves cotton yields

Year

Treatment

Number of bolls per m2

Boll weight/g

Lint percentage /%

Lint yield /(kg·ha−1)

2014

CK

93.7 b

5.2 b

40.9 a

1 693 b

 

T1

100.0 a

5.3 b

38.6 b

1 732 b

 

T2

101.7 a

5.5 a

38.5 b

1 797 a

 

T3

102.3 a

5.5 a

39.1 b

1829 a

2015

CK

73.7 c

5.6 b

39.1 a

1 549 c

 

T1

77.7 b

5.8 a

38.1 a

1 648 b

 

T2

79.4 a

5.8 a

38.6 a

1 706 a

 

T3

76.6 b

5.8 a

38.2 a

1 628 b

  1. Note: The treatments were as follows: T1 (replacing the topsoil from 0~15 cm with the subsoil from 15~30 cm), T2 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~55 cm layer), T3 (replacing the topsoil from 0~20 cm with the subsoil from 20~40 cm plus subsoiling at the 40~70 cm layer) and CK (rotary tillage within 15 cm). Different lower-case letters indicated significant difference between treatments within the same year