DIVlSfOX OF riF.TJ> JIUSKAyDRT 



219 



SESSIONAL PAPER No. 16 



Ai'iM.icATiON of Banivanl -^^auu^e for Roota. 



Plot No. 



Application of Manure. 



1 No manure, plough sccond-yoar stubblo in autumn 



2 Apply in autumn after ploughing second-year stubble, work in at once 



3 'Apply in .sprintc on autumn ploughed second-year stubble, work in at once 



4 ' Ajjply in autumn on second year stubblo, plough under in autumn 



5 ' Apply in spring on second-year .^i ubblo, plough under in spring 



6 [Apply in winter on second-year stul)blc, i)lough under in spring 



7 j Apply in winter green manure (cut straw) on second-year stubble, plough under 



in spring 



8 'Apply in winter green manure (cut straw) on summer-fallow, disc in 



9 Summer-fallow, no manure 



Yield 



of 



turnips 



per acre, 



19i:j. 



Lb. 



21,200 

 .30.000 

 2S,S00 

 30, 400 

 22,800 

 24,800 



28,000 

 32,400 

 30,800 



Plots 1 to 7 gave ail average crop of 27 bushels of wheat per acre in 1912. 

 Allowing for this, plots 8 and 9 have not given sufttcielit extra crop to pay for the 

 wheat whiph wa.'; lost by the suninier-fallowiiig. 



The fall application of manure either before or after fall ploughing seems to 

 have the advantage over winter or spring application. 



AppUoation of Barnyard Manure for M'lieaJ;. 



In this experiment there is followed a rotation of summer-fallow, wheat, wheat. 

 In tlic case of plots 2 and 4 the manure is applied to affect the wheat crop after 

 sunnner-fallow, whereas in the remaining plots it is applied to affect the second 

 wheat crop of the rotation. To make a fair comparison of the different methods of 

 application it is therefore necessary to average the yields for the two crop-producing 

 years of the rotation. 



Applicatiox of Barnyard Manure for Wheat. 



Plot No. 



1. 

 2 



3 



4 



5. 



G 



7. 



8 

 9 



Application of Manure. 



\pply in winter green manure (cut straw) on first-year 



I stubble, disc in 



Apply in winter green manure (cut straw) on summer- 



{ fallow, disc in 



Top dress, with spreader, grain sown on first-year 



stubble 



Top dress, with spreader, grain sown on summer-fallow 



No manure, plough first-j'ear .stubble in autumn 



Ai)ply on surface first-year stubble, plough under in 



autumn 



Apply on surface first-year stubble, plough under '.i 



spring _ 



No manure, di.sc first-year stubble in autuir.r. 



No manure, barn first-year stubble 



Yield 

 of wheat 

 per acre 

 on summer- 

 fallow. 



Lb. 



2,920 



*3,140 



3,220 



•.'{,3.50 



3,060 



3.130 



3,030 

 3,190 

 3,120 



^ield 

 of wheat 



per acre 

 on wheat 



stubble. 



Lb. 



*1,810 



2,310 



*2, C20 

 2,300 

 2, .520 



*2,680 



*3.400 

 2,. 300 

 2, .340 



Average 

 yield 



of wheat 



per acre 



for 



entire 



rotation. 



Lb. 



2,365 



2.725 



2,920 

 2, S.'iS 

 2,790 



2,905 



3,215 

 2,745 

 2,7.30 



* Indicates plots on which manure v as applied thi.s year. 



BltVNDON. 



