crop attributes as an indicator ofthe fi nal yield …metnet.imd.gov.in/mausamdocs/526212.pdfaspect...

55\ .5 86: Crop attributes as an indicator of the fi nal yiel d- Wheat in jalgaon and Niphad r. S. SREEKIVASAN Jleleorol OlJ im l O jfi u, 1'00.,. (Rrcei.'Ct/2i J uly 19 U) Assr R\ cr. Cop yhU is t.'n 1 e'fll Jt of 'p n1.t.;-ibJ. tn . If )w,", Y,,: all th') or ••p at t. riln t. ...lJ wlll n u hw e . iIQih.:- am mnt of in1 !u IG3 U ),1);" c li lll \ t io rum " .il 0 Iml iti The differonti.1 irn jlact of orop un riohl of geai 1 of g: ,)W,l at Ja l,.t ' In and has 1.0'>0 Alth. Hq h all toll., {Jut' C:,JP at trib:J tJ J a re lJi iPiRc .• ·, t.I ... • 0l :tA! I\ b 1 yi eld wlna hke .1 t40ve.·"lIy. it wus (.mn'l wb m hkoa j lint!r . hoil lt is tolt., si"niti'll.llt fl Jt )t at. h ,.b t 'l.:) 8t.a.ti In1 .'111it i _n t) sh IIt ;1Io n factor at whereas pla.nt lIol' lKr..rli tu 00 a fa ct 'lt' at KiJlh atl . Us inR: tho) cr op &tl ri but&l; it i" p ieslblo to ") f.1!'OJll" t tho I1MI vield wit h hutl1Ji ont well in edve nce of harvOlf t whorl the crop is hardly tc.i weeks uld .· • 1. Introduction Climate -soil in teraction is reflected ill every a spect of the crop perf ormance right from the time of sowing to harvest, This being so, the plant breeder nims at evolving which C3 n hy and large give the best result for a givea al':roolimatio zone. Al though yield is the integrated effect of the crop features, there is a differential emphasis in the crop under varying environmental conditions. However, for a prelimi nary study with meagre d ata, the a uthor (Sreenivasan 1958) anal ysed the wheat data collected under All India Co-ord ina ted Crop -wea th er Scheme. In th is pnper th e author has treated the replic at ion in apace aa t he replication in time with certain reserv ations, "T itll the accumulation of more data th ea ut hor could attempt in this puper a more valid statistical analysis. 2. Mitorlllln4 methods Since th e end prod uct, namely the yield, may be considered as th e integrated effect of the sequence of crop development from sowing to harvest, such as germinati on, tillering, elongation and earemergence, these crop features have been recorded systematically on wheat at Jalgaon and N'iphad by resorting to sampling technique reported by Ramdas (1960). The agronomic practices followed in gro wing N.r. 4 var iety of wheat in the relatively heavi er black soil of J nlgaon with higher moisture holding cspa eity is somewhat different from those 232 of N iphad , Thus at ,Talg.lOa the scerl rate is 60 1b/ acre sown with seed d rill !'! in rows 13'" a part while ill Niphad it is only 40 Iii/acre in rows 10" apart, This works out to an avcrage of 69 seeds nt..Ialgaon nnd :H seeds in N' lph'1. 11 pt' I" a-mple of four -foot le ng th of row. Tho sta tistical analysis of the Illlt41 wna carrie d out hy employing the well k nown methods of correlation, regrc't'i:on tH1l1 pr rtin! regression (Snedeeor 1916). 3. The crop attributes studied Among th e vari ous crop at tributes co nt ributing to the finnI yield, some of rl.e more importa nt ones arc: (a) germinated seedlings. (b)number of shoota when the crop has completed tillering, (e) height and (d) number of earheads. Tbe year to year values of these four crop attrib utes for tbe period 1917 to 19f J8 (22 years) for .Talg.lOn and Niphnd are graphically represented in F ig•. 1 and 2. F rom an examination of these two figures, th e following broad inferences may he drawn. 3. J. Number of germ inated seedling.• per "ample is of the order of in ,Taigaon while the corresponding value in "N iphad is only 25. 3.2. In general there is much IeI'. tilleri ng in J nlgaon tha n in Niphnd , This may he ascribed to high seed rat e and wider spacing of rewa in .Jnlgaon, re sult ing in grea ter density of germinat ed

Upload: others

Post on 08-Apr-2020

1 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: Crop attributes as an indicator ofthe fi nal yield …metnet.imd.gov.in/mausamdocs/526212.pdfaspect of the crop performance right from the time of sowing to harvest, This being so,

55\ .5 86: 6~3' 1I(513)

Crop attributes as an indicator of the final yieldWheat in jalgaon and Niphad

r. S. SREE KIVASAN

JleleorolOlJim l Ojfiu , 1'00.,.

(Rrcei.'Ct/2i J uly 19U)

AssrR \ cr. Cop yhU is t.'n int3,~ "Jot') 1e'fll Jt of C ~ ' p n1.t.;-ibJ.tn. I f )w,",Y,,: all th') or••p at t.rilnt....lJ wlll n uhw e . iIQih.:- am mnt of in1 !u IG3 U ),1);" ulff~:U _lt c lilll \ t io rum " .il 0 Iml iti 1Il_~ . The differonti.1 irn jlact of oropatt.rib~lbJ un riohl of geai 1 of who~t g: ,)W,l at J a l,.t ' In and ~i(lh~' l has 1.0'>0 (\i8a IlS~td.

Alth. Hq h all toll., {Jut' C:,JP attrib:J tJ J are lJiiPiRc.• ·, t.I...• 0 l :tA!I\b 1 ,~rith yield wlna hke .1 t40ve .·"lIy. it wus(.mn'l t.h.~ wb m hkoa j l in t !r . hoillt is tolt., s i"niti'll.llt fl Jt )t at. h ,.b t 'l.:) 8t.a.ti ':l ~. In 1. '111it i _n t) t~ill . sh II t ;1Io nfactor a t Jal~'VJn whereas p la.nt lIol'lKr..rli tu 00 a fa ct'lt' at KiJlhatl .

Us inR: tho) cr op &tl ri but&l; it i" p iesl blo to ") f.1!'OJll" t tho I1MI vield with hutl1Jiont nc~urao.r well in edvenceof ha rvOlft whorl the cro p is hardly tc.i weeks uld.· •

1. Introduction

Climate-soil interaction is reflected ill everyaspect of the crop performanc e r ight from the timeof sowing to harvest , Th is being so, t he plantbreeder nims a t evolving varie.t.ic~ which C3 n hyand large give t he best result for a givea al':roolimatio zone. Although yield is t he integratedeffect of the crop fea tures, there is a d ifferentialemphasis in th e crop under varying environmentalcond itions. H owever, for a preliminary study withmeagre data , the author (Sreenivasan 1958)analysed t he wheat data collected under All I ndiaCo-ordina ted Crop-weath er Scheme. I n thispnper the aut hor has treated the replicat ion inapace aa t he replication in time with certainreservations, " Titll the accumulation of more datathe author could attempt in t his puper a morevalid statistical analysis.

2. Mitorlllln4 methods

Since the end product, namely the yield, may beconsidered as th e integrated effect of the sequenceof crop development from sowing to harvest ,such as germination, t illering, elongation and earemergence, th ese crop features hav e been recor dedsys te matically on wheat at J algaon and N'iphadby resorting to sampli ng techn ique report ed byR amdas (1960). The agronomic pract ices followedin growing N.r . 4 var iety of wheat in the relat ivelyheavi er black soil of J nlga on with higher moistureholding cspaeity is somewhat different from tho se

232

of N iphad , Thus a t ,Talg.lOa the scerl rate is 60 1b/acre sown with seed drill !'! in rows 13'" a part whileill Niphad it is only 40 Iii/acre in rows 10" apar t,Th is works out to an avcrage of 69 seeds nt. .Ialgaonnnd :H seeds in N' lph'1.11 pt'I" a-mple of four -footleng th of row.

Tho stat istical analy sis of the Illlt41 wna carrie dout hy employing the well k nown methods ofcorrela tion, regrc't'i:on tH1l1 pr r tin! regression(Snedeeor 1916).

3. Thecrop attributes studied

Among th e vari ous crop at tributes contributingto t he finnI yield , some of rl .e more importa nt onesa rc: (a) germina ted seedlings. (b ) number of shootawhen t he crop has completed t iller ing, (e) heigh tand (d) number of earhea ds. Tbe year to yearva lues of these fou r crop attribu tes for t be period1917 to 19fJ8 (22 yea rs) for .Talg.lOn an d Niphndare grap hically represented in F ig•. 1 and 2. F roman examination of these t wo figures, the followingbroad inferences may he drawn.

3. J. Number ofgerminated seedling.• per "amplei s of the order of ~6 in ,Taigaon while t he corresponding value in "Niphad is only 25.

3 .2. I n general t here is much IeI'. tilleri ngin J nlgaon tha n in Niphnd , This may he ascribedto high seed rate and wider spacing of rewa in.Jnlgaon, resulting in greater density of germinated