| Show Increase Yields by Crop Rotation Experiments at the Huntley Field Station Show Value of Alfalfa by or o the u Slates tee Department Results of crop rotation e extending over the last 13 years Jears with IrIl Irrigated crops In southern Montana ore are reported 1 by y time the United States Slates De De- Department Department of Agriculture in Bulletin W-T W Irrigated Crop nota Bota notations just is- is issued Is Issued In Southern rn I sued by hy the department The expert expert- experiments meats ments Mere here ere conducted at the lie Huntley field station In southeastern Montana to lud Ond out rotations and meth ineth methods oils would give Ive the highest yields on nn the Irrigated soils solis representative of the area I i I I Value of Alfalfa Shown I IValue The experiments experiment demonstrated vcr very clearly the value of In the rn- rn 10 ro 1 I h tullon and of IlI the application of stable I manure Where one application of I stable manure was made mude In a year six j which Included hi alfalfa the I I yield of lIat oats was WIS K per cent greater reater the yield of lU sugar lr beets was Il IJ percent per cent greater and nud the yield of pota potatoes potatoes lOt toes WitS was 49 43 per cent greater than Ihan thana a here sin bie manure was ns not added In respect to 10 oats the hl highest hest yields were HIe produced In those rotations ls In which alfalfa was u used the next nest h best st stI yields were wIe In those rotations In whIch t manure was applied rind the lowet yields were wre on the plots cropped continuously Manure Effective As to sugar beets In year two and year year three rotations stable manure was more than lImn alfalfa In In- In Increasing In Increasing creasing yields I All of or the treated ro rOo rotations rotations showed a tI marked tendency to increase In III yield the longer lon these ro wc were re continued Comparative Comparative- I Ily ly low yields re re II It lt from from plots con continuously cropped and not better aver er averaged averaged aged lI ell yields resulted from the time two year rotations rotation as ns where heet beets follow tollow wheat and oats I An application of manure In two two- year two I IAn rotations Is well year mind year three Ju justified ell the e experiments IndIcated I The Incorporation of alfalfa In a well well- well planned planned rotation brought a n return sec sec- second second I ond and only to that when manure w was used As a rul rule It 11 to be the better practice to leave lea alfalfa for fora fora fora a period of nt ot least three years Ad Ad- Adding Adding ding manure to a 8 year six ear rotatIon which Included three throe years of alfalfa much more than than paid for the cost of application l Copies of c the bulletin may be ob ob- obtained free tree from the Office of ot Information motion motion mation Department of ot Agriculture D C as Ion long as al there Is a supply available for tor tree free distri distribution I 1 u tI on |
