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Table 1 Mechanical and chemical analysis of the experimental soil

From: Effect of sowing time on productivity of Bt and non Bt cotton under climate change

Components

Soil properties

Methods used

Soil pH (1:2)

8.6

Glass electrode pH metre method (Jackson 1973)

EC (dSm−1 at 25.8 °C)

0.3

Conductivity bridge method (Richards 1954)

Available N (kg/ha)

175.0

Alkaline permanganate method (Subbiah and Asija 1956)

Available P (kg/ha)

14.0

Olsen method (Olsen et al. 1954)

Available K (kg/ha)

532.0

Flame photometric method (Jackson 1973)

DTPA-extractable (ppm)

 Zinc

0.50

DTPA-extractable zinc, copper, manganese, iron (Lindsay and Norvell 1978) and boron (hot water extract) (Berger and Truog 1939), respectively

 Copper

1.3

 Manganese

2.6

 Iron

2.3

 Boron

0.07