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be not applied in the near future by means of green manuring with 

 mati kalai, or, better, this treatment combined with cattle manure 

 at the rate of ten tons to the acre. 



The third section of this district, and probably the best type of 

 soil, embraces a great part of Joyhing and Dejoo gardens, the 

 balance of the former being not dissimilar to the lower gardens 

 at Tezpur. The best part of Joyhing lies on a bank of land similar 

 to those at Tezpur and Bishnauth, but here the bank goes right up to 

 the base of the hills This bank soil is a paradise for white ants, 

 but nevertheless is exceedingly good for tea, but owing to a certain 

 deficiency in phosphates seems hardly capable of producing quite the 

 quality of Dibrugarh, though the climate is here approaching that 

 of the upper valley, The Dejoo soil, both virgin and 3540 years 

 old, gives the following figures on analysis : 



That such soils as these, therefore, become much exhausted 

 by the growth of tea, can therefore be no longer dcubted, and 

 even here manure will be required on land more than 10 to 15 years 

 old. This will, I fancy, be best applied as recommended on the 

 Tezpur bank, save that phosphates are hardly so absolutely requisite 

 at once. Good top-dressing soil is not, I think, available to the same 

 extent as at Tezpur, hence one is driven to oilcake and super- 

 phosphate, or even oilcake alone. Ten maunds of this would give 

 40 Ibs. of nitrogen per acre, and if this were applied once in three years, 

 and supplemented by green manuring with a leguminous crop, little 

 more would be needed, except that in every sixth year the addition 



