HOWARD, LEAKE AND HOWARD. 



99 



time. Across the middle of the plots a strip was manured with 

 nitrate of soda just before sowing, the total amount added being 

 four cwt. to the acre. At first, the waterlogged area did best due 

 to the abundant moisture but after tillering it rapidly fell behind 

 the areas on either side. The nitrated strip in the waterlogged area 

 soon became well marked but was hardly distinguished on the 

 weathered plots on either side. The yields obtained are given in 

 the following plan : — 



The result of waterlogging wheat land at Pusa in 1910. 



Norma! cultivation. 



Waterlogged during September. 



Normal cultivation. 



The numbers iu the plan are bushels per acre. 



It will be seen that the effect of waterlogging for a month was 

 to reduce the yield by about sixteen bushels to the acre 1 while the 

 nitrate of soda on this area increased the yield by nearly ten 

 bushels. The effect of the manure on the non- waterlogged plots, 

 as was expected, was very little. The results prove that the effect 

 of waterlogging wheat lands in the previous monsoon is to interfere 

 with the nitrogen supply of the crop and to lower the yield. 



This result is of some general interest in Indian agriculture 

 and particularly in those tracts of the plains like Bihar when 1 rice 

 and wheat are both grown. The lowlying areas in these tracts, 



