An evaluation of soil survey crop yield interpretations for two central Iowa farms

Content Provider	Semantic Scholar
Author	Steinwand, Aaron L. Karlen, Douglas L. Fenton, Thomas E.
Copyright Year	1997
Abstract	This swdy was conducua' on four adjaunc 16-ha NO-ne) Jii!U wiriJin dJI! C!mion-NzcolfaW!bua ,-oil aiJociarion ro ( 1) a'aa·minl! if crop yil!ld imerrm:-:arions dc-nl!c-d from 1:15840 soil survry maps could be' ustd for dtur:loping fir:ld-sca& managonmr pl.mu; ,md (2) to dtetrmint zfsoils in adjacmr fir:lds wal! mfficimtly simi&zr to not confound f.: rming ;yuan comparisom. Expr:cud crop yil!lds Wl!rl! dtriul!d wing a computtr-btued Soil ln(oml!zrion S1·sum (SIS) ,znd comparr:d with mr:asurr:d yir:l.ds. Soil map unics in all four Jli!lds z~trl! tli.\WZOn;ically uariablt. bur chis a'id not affia i!xptcrtd crop yitids. Autragt txptcrtd and m~.zmrtd com and ;o_ybtan yitlds agrud wichin 9 and 12% for conz,tmional managtmtnc ,zr rh~ Jitld-;calt. \~'( conclude riJac yitld inttrprtearions from corwry ;oil mrurys cr.n bt wtd ro tln·aop ficid-;calt m.1nagtmtnc plans for ctnrml Iowa farms. and char taxonomic ;oil d~!j~•·c-1/ai ll'tnu'd nor confound comparuom of conutncional and ,zlurnatzuc farming praaias in rl.'ti<' Jit:ft!;. T he need for field-scale soil and crop management plans is increasing as we scrive co idencify more environmentally and economically sound agricultural praccices. However. techniques for collecting and incerprecing informacion for chese plans are noc well defined . Spacial characceriscics of agriculcur:d fields. including cheir si-ze. landscape t'e:~cures. Jnd d istribution of soils. are nor cons1scenc. Therefore . simply excrapolacing results t'rom site-specific ploc scudies co che tldd-scale may nor be teasible or accurate. On-farm studies. using soil map unics idcncitled wich councy-level soil survey maps and associated accribuce daca. may be useful for developing field-scale management plans. To evaluate che accuracy of rhis approach. predicted crop yields, obtained from incerprecacions of maps prepared ac Jifferenc scales, need co be compared wich measured yi elds for fields managed using different farming practices. Soil survey maps and cheir accribuce dac:l mav be useful for developing fi eldscale management plans because chev provide .l decaded natural resource inventory t~>r .l larg:e porrion of chc Unirc:J Scates. .1. /. ."'·;trtJJll'''"d ii ~~ irul ,-cirntiu ll'ttf, rh~ lnvo t .ouuty x ·,u~r Ur:p,,rrnlt'ttt. lJulwp. (.".·! CJJ51-.i: I J I. A:.n·t·t',l 1.·· " rr!r-nrcf, _,,,f .\ Ot'lltiu ~I.' Ill' du I ''I I J .,..,-.~~'!,rtUtllllr,d Nt'H'tlrc ·J, _'\.t'rt'irc .. V,tttun,d ''"' lfid, /.,z/mrtZWry . .l/50 f'.mlfud /Jr .. Am~I. 1.·1 ~IIIII/ . dmi T !:'. Fmro•t ii .z f""F;;or . .-lgmno' 'fl ' :' J ,.,,,;r!ll/~1/f . / f/lt'd St, tlf' C-' lltl'rr•lf1' . . 111/rJ . f.f. . , : , ,; ('/1111'.{1/(( rcict,imttl' r(J! 1)) s;J.i / (h'{ lot i/ / : o df/r.' l~ll(/fllf ,,. /1· ,,. { ., ., J .· !.·1:~ ' '! ( ullur.li .'\', ., .. ·r, /, ,,.,.,.,, ., . . oui .-iw lou•, l .· l .~rt(ltiturr . 1111/ ; :'o.n,· r. fll /11/11/, ) F.\,llf'l"flllt''lf \t .t :tol/ . i oiU'IIIIi ~· ·.1 1•1,. /· / i_1(J l . i ,rt lft'cl .\"n _'rJ -1 Fr, ,tl>o· 111 ,l'• ll"f ;,,. n·,,. I''".'"'/,/ ( ~· ,tr,· ,, ,. ' "''·'"'''/,/r i·~· · ·. u/turt' .... ,, ".\. 111"' ( ,, . "'''l'2f6--, The maps also provide a basis for describing landforming procc:sses. grouping natural variation occurring on landscapes (Hall and Olson 1991 ). and transferring informacion gained ac one sire co similar soil resources (Karlen and rencon 1991 ). As a resulc, land owners. planners. and policy makers can use chis informacion co evalu
Starting Page	66
Ending Page	71
Page Count	6
File Format	PDF HTM / HTML
DOI	10.31274/icm-180809-573
Volume Number	51
Alternate Webpage(s)	https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1579&context=icm
Alternate Webpage(s)	https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1609&context=icm
Alternate Webpage(s)	https://doi.org/10.31274/icm-180809-573
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article