anale 5.pdf

M. BERINDEI şi colab., Influenţa solului asupra producţiei.
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BURTON W.G., 1965, The Permeability to Oxigen of the Periderm of the Pata-to
Tuber, Journial of EXiPelriimenrtal Botany, ,16.
DALLEINNE., 1968, Comment eviter les mottes dans les preparations des sols el
pommes de terre. La pomme de tene f!ranc;aise ,324.
HALL A.D., RUSSELL E. J., 19,u, Soil survey and soil analyses. Journ. Agr.
ScieHice, TIV, pat. IiI.
KUIPERS H., 1965, Die bearbeitung Schwerer Băden in den Niederlanden. \Viss.­
tech. Foritsch. Fe[dw. 9.
TACKET,T J. L,., PEll\RSON R.W., 19,64, Effect of carbon Dianide 011, Cotton Seedling
Root Penetration of Compacted SoiZ Cores, Soil Sdenrce Sode'ty of
Ameri.lca. Proceeding, 6.
ZIELMANN H. K., 1961, Standortfuktoren. Di,e Kalrfboffel, I, VEB Bedin, sul:; redacţia
R. SchieiCk.
MA,XIM N., 1972, Condiţiile de sol şi climă pentru cultura cartofului în România.
'Teză 'pentru obţineT'ea tiHuilui de doctor în agronomie;
[NFLUENCE OF SOIL TEXTUHE ON YIELD AND QUALTTY
OF POT;ATOES
SUMMARY
Experimen:ts were conducteid between 1966~1968 in pots, on lil diffeT'ent
soH mixturres consisting a-i sandy soi!J. and day in raition:s ran,ging f.rom 10-1000f0
with an increasing rate of 100f0. The buJk delllsi:ty of soiI!J. mixt'11l'es decT1ease!d from
1,50 g/cm 3 in ithe val'~ant Icollliliatiniing 11000/0 s!aillrdy soi1 to ,1.00 g/om 3 in the
voiaJnlt oonitaining 1000/0 doyey 80111, iconside~iill!g 0,05 gjlc:m 3 per eaich t,extUire
oorresponding to a varrLan:t. The re:suilts, eiVailruited by varianoe anai!J.ysils, n1ultipile
cOl'1rela:tion an:d yieJd fu:nlC!tions showleed truibea:" yie·ld iÎnc:r;elarseis (g.JiPOt) conlcurT':ently
with the increalse of sand eOil1ltenit of iSoiI. mi~ture. Tubal' yieild var'iation:s remlgllng
betwe,en 500-870 g/pot may bAe explai!Died un. an extenlS of 84,8% on he basis
of s\and eOllitent val'ia:tions. Clay content proved to be nrega!tively Icorrelated (significant
at the 0.10f0 level of probabiild.ty) with stern weilgh>t, plant heighrt:, leaf
8.rea and root weight. The high c[ay conten:t n,ega:tiiVely iniiluelliced both tuber size
(0/0 ofmal'ketabJ.e tubers) and [lumber. The high cJay con:ten't of soH mixture
negElJiively influenced P 2 0s land K 2 0 ahsor!ption Le. reduloeti the effilcieney of
applierd minlelral ferrlt!iHzers. A s;ignirDiloaJnt cOlire!J.altion W1alS IOUlnd be1tw€len the
clay conten,t of soi,!J. and tuher protein pereentalge while a parabolk relation!Ship
was nO\ted ibe,tween ,Qlay C01nltent lanJd perce1ntage of srbarreh Î1n tubers. I!t may Ibe
con!C'luded that fodder potatoes aT'i€ strou,gly inHuenloed, whHe the potatoe:s used
foII' stanch ex:tradion a,re nelgaititvely inLfluenced by soiI. mixtlUres containing over
250f0 Cll,ay. The high day content is also i:mpor1tant in Icaise of pota'toes for eooking
as it diminishes the crralckinlg resistanlee durililog boiiljng :and diminished aJso the
resisbance to the s;taining of crude tuibeifs with va[ures signtifkrant at 0.1010
a:rld 0.1% !J.evels of probabili:ty.
DER EINFLUSS DER BODENTEXTUR AUF' DIE KARTOFFEL.PRODUK'BION
UND QUALITĂT
ZUSAMMENFAiSSUNG
Wahrend den Jahren 1966-1968 wurden e:I.f veT'Sichiede:ne Bodenmisehungen
in V€igetationlsgefassen experimenti,ell'rt:.
Der Sandboden- und TonibodenranteH wurde 'V1on 10 zu 100/0 geanidert, das
volurmetrische Gewicht verringer1ts sich von 1,50 g/cm 3 in cler Vrari:ante 100010 Sandboden
zu 1.00 g/em 3 in der Variante 100% TOIlJbodeill, unld dies fU'm je 0,05 g/tcm J
fUr jede Tiextmrvarianlte.