REPORT OF THE DIRECTOR 



27 



SESSIONAL PAPER No. 16 



EXPERIMENTS WITH FERTILIZERS ON PLOTS OF INDIAN CORN. 



Fertilizei-s applied each year from 1888 to 

 1898 or 1899. No fertilizers used from 

 that time to 1905. Clover sown in 1000 

 in place of the corn and ploughed nndei 

 in May, 1001, before the corn was planted. 

 In 1903 clover was again sown and 

 ploughed under in May, 1904. In 1905- 

 G.7-8 fertilizers again applied as in 1898. 

 Clover discontinued. 



10 



11 



Average Yield 



FOR 



Sixteen Ye.\rs. 



c 



CD 



9 



o 

 -a 0) 



tJCC 



> o 



Per acre. Per acre 



Mineral phosphate,untreated,fineIy ground, 

 800 lbs. per acre, used each vear from 

 1888 to 1897 inclusive. In 1898 and 1899 

 a similar weight of theThomas' phosphate 

 was used. No fertilizer used from 1900 

 to 1905. In 1905-G-7-8 fertilizers again 

 used as in 1899 



Mineral phosphate, untreated, finely ground, 

 800 lbs., nitrate of soda, 200 lbs. per acre, 

 used each year from 1888 to 1897 inclu- 

 sive. In 189S and 1899, 800 lbs. of the 

 Thomas' phosphate were used in place of 

 the mineral phosphate. No fertilizers 

 used from 1900 to 1905. In 1905-6-7-8 

 fertilizers again used as in 1899 



Barn-yard manure, partlj^ rotted and active- 

 ly fermenting, 6 tons per acre, mineral 

 phosphate, untreated, hnely ground, 500 

 lbs. per acre, composted together, intim- 

 ately mixed and allowed to heat for sev- 

 eral days before using, applied each year 

 from 1888 to 1897 inclusive. In 1898,500 

 lbs. of Thomas' phosphate were used in 

 place of the mineral phosphate. No fer- 

 tilizers used from 1899 to 1905. In 1905- 

 6-7-8 fertilizers again used as in 1898 . . . 



Minei-al phosphate, untreated, finely ground, 

 500 lbs., nitrate of soda, 200 lbs., wood 

 ashes, unieached, 1,000 lbs. per acre, used 

 each year from 1888 to 1897 inclusive. In 

 1898 and 1899, 500 lbs. of the Thomas' 

 phosphate were used in place of the min- 

 eral phosphate. No fertilizers used from 

 1900 to 1905. In 1905-6-7-8 fertilizers 

 again used a.s in 1899 



Mineral phosphate,untreated, finely ground, 

 500 lbs., wood ashes, imleached, 1,.500 lbs. 

 per acre, used each year from 1888 to 1897 

 inclusive. In 1898 and 1899, 500 lbs. of 

 the Thomas' phosphate were used in place 

 of the mineral (ihosphate. No fertilizers 

 used from 1900 to 1905. In 1905-6-7-8 

 fertilizers again u.sed as in 1899 



Mineral superphosphate. No. 1, 500 lbs. per 

 aero, used each year from 1888 to 1899 in 

 elusive. No fertilizer used from 1900 to 

 190.5. In 1905-6-7-8 fertilizer 

 as in 1899 



Mineral sup'irphosphate. No. 1, 3S0 lbs., 

 nitrate of soda, 200 lbs. per acre, used 

 each year from 1888 to 1899 inclusive. No 

 fertilizers used from 1900 to 1905. In 

 1905-6-7-8 fertilizers again u.sed as in 1899 



Mineral sui)orphosp!iate. No. 1, .350 Ujs., 

 nitrate of soda, 200 lbs., wood ashes, un- 

 ieached, 1,500 lbs. j'er acre, used each 

 jear from 1888 to 1399 inclusive. No 

 fertilizers use" from 1900 to 1905. In 

 1905-6-7-8 fertilizers again used as in 1899. 



Tons. lbs. 



again used 



8 129 



11 695 



15 1425 



14 1305 



12 118 



11 59 



12 1448 



15 1204 



(M 



G 







. be 



O u^ 



^5 



<D 





^a 



17th Season, 1908. 



r^l 



i 



"A 



6 



o <1> 



bt)0 



be 



a 



3 OTJ 



Per acre. Per acre 



Tons.lbsiTons. lbs. 



5 1312 



9 348 



11 1975 



11 347 



9 1276 



8 111 



10 90 



12 "330 



4 40 



6 1900 



9 100 



8 1720 



6 400 



5 1820 



6 160 



8 1700 





c 



r^ 



Average Yield 



POU 



Seventeen Years. 



I ^ 



I 4) 



. bC 



rttn 



Per acre. 



Per acre 



Tons.lbsiTons. lbs. 



3 1200 



7 140 



6 740 



5 1740 



4 660 



4 340 



5 1000 



7 140 



7 1653 



11 178 



15 641 



14 682 



11 1429 



10 1457 



12 666 



15 410 



I s 



Tons.lbs 



5 1070 



9 100 



11 1314 



10 1664 



9 652 



7 1654 



9 1597 



11 1731 



