-2-­

The experiment ran from July 3 to September 10. The bean plants were cut at soil level on September 3 and the soil was tested for pH.

Penetrability was tested in 5 pots per treatment, (moisture content of these 5 pots was judged to be approximately the same on the basis of visual examination). Three measurements per pot were done with a pene­trometer. The pots have not been watered since August 29 (12 days earlier). 'The intent was to create conditions resembling relatively prolonged period of drought. Fifty grams soil samples were then taken from each pot to measure moisture content. 

Throughout the experiment the plants were watered for 10 sec with tap water or Nitron R solution every 2 days.

RESULTS 

Nitron R was found to have a positive effect on soil pH. 

After pasteurization the soil pH of the CONTROL was 6.00. After one watering the soil pH of the SULPHUR TREATED was 5.5. At the end:, of the experiment soil pH was as follows: 

Mean 

 WATER LOSS OF 50 G SOIL SAMPLES AFTER DRYING (105 DEGREES CELSIUS FOR 48 H)