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Table 1 Pre-sowing physico-chemical characteristics of experimental soil

From: Zinc nutrition optimization for better cotton productivity on alkaline calcareous soil

Soil characteristic

Type/values

Reference

Soil textural class

Loam

Gee et al. (1986)

pH

8.09

Bigham (1996)

Electrical conductivity /(dS·m −1)

1.10

Bigham (1996)

Sodium adsorption ratio /(mmol·L−1)1/2

6.42

Richards (1953)

Cation exchange capacity /(Cmol (+) kg −1)

11.92

Thomas (1982)

Calcium carbonate /%

10.58

Black (1965)

Organic matter /%

0.61

Nelson et al. (1982)

Saturation percentage /%

29.42

Wilcox (1951)

Total nitrogen /(g·kg −1)

0.052

Nelson et al. (1982)

Available phosphorus /(mg·kg −1)

7.82

Olsen et al. (1954)

Extractable potassium /(mg·kg −1)

156.00

Soltanpour et al. (1979)

DTPA extractable zinc /(mg·kg −1)

0.29

Lindsay et al. (1978)

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