May 1908.] 



439 



Edible Products, 



Sixty-two other varieties were under 

 experiment in 1900 with results alreday 

 reported. 



Messrs. Wieting Richter kindly ex- 

 amined by milling samplesof the varie- 

 ties raised in 1900, and expressed their 

 opinion that of the imported varieties 

 " Nos. 0, 4 and 75 (Sur Dhani) are the 

 most suited for the local trade, the first- 

 named especially being the long grain 

 rice which is saleable." 



The opinion is of great importance as 

 it shows that No. 6— the heaviest yield- 

 ing variety we have cultivated — is also 

 the one most suitable for our local 

 market. 



Results with Phosphatic Manures. 



The following are the mean results 

 of the trials of various kinds of phos- 

 phatic manures :— 



Bags of 120 lbs. 

 Paddy, per acre. 



Means 



1905. 1900. 1907. 1905-7, 



No Superphos- 

 phate 34-9 30- 23-0 29'5 



With Superphos- 

 phate 31-0 32 - 24-2 29-3 



No Slag Phos- 

 phate 301 30-5 22"7 29'7 



With Slag Phos- 

 phate 30 - 36 - 22-4 29-5 



No Basic Super- 

 phosphate ... 30-8 30-1 22 1 277 



With Basic Super 



phosphate ... 33-5 307 22"6 28"9 



During these trials one hundred com- 

 parisons without and with phosphates 

 have been made and 03 results in higher 

 yields on the plots dressed with phos- 

 phates than on those not so dressed. In 

 the case of basic superphosphate 09 per 

 cent, of the manurings, in that of super- 

 phosphate 04 per cent, and in that 

 of slag phosphate 52 per cent, were 

 accompanied by increased yields. In 

 the remaining cases the yields were 

 lower on the plots manured with phos- 

 phates than on those not so treated. 



From this it may be concluded that 

 dressings with superphosphates are 

 advantagious to rice. 



The relative advantages of the diffe- 

 rent forms of phosphatic-manuring 

 may be inferred by eliminating from 

 consideration the results where the 

 manurings were followed by lessened 

 yields. The following gives the mean 

 results thus arrived at :— 



Bags of 

 Paddy. 



120 lbs. 

 per acre. 



Means 





1905. 



1900. 



1907. 



1905-7. 



Without Super- 











phosphate 



42-8 



30-0 



2P2 



31-5 



With Superphos- 











phate 



442 



32-7 



22 7 



33-2 



Without Slag 











Phosphate 



33-2 



37 5 



23'4 



311 



With Slag Phos- 











phate 



35-5 



39-0 



20-5 



33-7 



Without Basic 











Superphosphate 



25-2 



27-7 



21 



24-8 



With Basic Super- 











phosphate 



28-0 



29-8 



23-7 



27-2 



This shows that, presuming the plots 

 which showed phosphatic manurings 

 were of equal fertility to those not so 

 manured, increase of 4"7, 7'3 and 9'6 per 

 cent, as due respectively to the dressings 

 with superphosphate, slag-phosphates 

 aud basic superphosphate. 



Trial op New Mode op Planung, 



Trial was made in 1907 of a mode of 

 planting strongly recommended by the 

 Emigration Agent in India for adoption 

 in British Guiana. This consists in 

 planting singly carefully selected plants 

 in the holes in place of two or three 

 plants as is usually done here ; the fol- 

 lowing are the comparative results ob- 

 tained:— 



Bags of Paddy (120 lb.) per acre. 

 Single plant 2 or 3 plants 





to a hole. 



to a hole. 



Colony Creole 

 Rice ... 



... 37-2 



82-3 



Berbice Creole 

 Rice ... 



... 30-0 



17'2 



Cevlon Upland 

 Rice No. 3 



... 32*0 



326 



Ceylon Upland 

 Rice No. 4 



... 28"5 



31-3 



Ceylon Upland 

 Rice No. 6 



... 38-0 



32-5 



Sur Dhani Rice 



... 28-7 



33-7 



As is usually the case in experiments 

 of this sort the results with different 

 varieties are conflicting. The mean 

 yields of the singly planted plots is 321 

 bags of paddy per acre whilst that of 

 the more crowded plots is 29 9 bags. 



These comparisons will be repeated as 

 opportunity offers.— The Journal of the 

 Board of Agricidture of British Guiana 

 Vol. I, January, 1908 No. 3.) 



