Effect of Different Herbicides and Nutrient Management Practices on Weeds and Productivity of Wheat (Triticum Aestivum L)

Abstract

\\ heat is the mo~t unponant loodgmin crop among c..:reals and ~l<lnds next only to m:~· tnvur cowltr). It has signitil:antl} wntributed in the success of the green revolution and Ita<; grc;lll) helped to transform our count!) from a situation of ship to mouth to being self sufficient. \\'heat i., a good supph:mcnt for nutritional rc<Juircmem of human body as it contains •J.J 0% protein und 60-80°·· carh ... h)drates A ticlt.l c\pcrimcnt ••as conJtKI~'tl durin I! 2009-10 and 2010-llat Crop Kescard1 Center, Sard.1r \'allabhbhai Patel l ni\crsity of ,\grkuhurc and Tcchnolug~. Meerut !U.I' Ito e•aluatc the ellcct ofdiffenmt hcrb1cides and nutm·nt m;~nagemcnt practi~cs vn 1\c.-ds ;md producti\ it} of 1vhca1 (Trui< 11111 m'.l/11'11111 L.). lite c.xp~:rimcnt was laid out in factorial randomized block ucstgn "ith three repltc,tuons. The rah1 season experiment comprised ol tour levels of nutrient 1•i:. control (No ~PK). 50% ~PK + FY~I 15 t ha"1• 75 ~o ~P"- -t- I·Yt.l 10 t ba'1 and 100% 'PK and lhe lc:•cb ol 1\eed control m.:asures 1·i:. pcndimethalin 1.0 kg ha'1. fenoxaprop 100 g ltf ~ metsulfuron .t.O g ha 1, fo:noxaprop 100 g ha'1 + carkntraLonc: 10 g ha'1 and 1110 hand 1\eeding (25 & 45 0.\S) and 1\Co:d• 'heel.. Soil \\3' "'md} loa1n 10 h:xture with pll 7.6. r\1ailable '\, P und J.- \\ere ,~ 5 6. I >.4 and 185 kg ha 1• rcspcctiwl~. Rc:)ult indicated that gro1~1h parameters 1·i:. plant heigh t. number of tillers. d1} mallet accumulations were inOucnced significantly by nutrient .md weed management practices. Yiclu attributes 1•i::.; spike length, number of grain/spike. number ot spikelets1spikc and 1000-grain weight mflucnccd s1grullcantl) through nutrient and 1\Ccd management pra~uces. 1 ht! '1gnificantJ} higher number of } icld attributes and )idJ 1111' in application of 75% ~p.- ~I Y\1 10 t ha'1 though it was at par 11ith that under lliOo/o l'I'K and significant!) tughcr than ~-ontrol and 50'lo ~PK .,. FY:I-1 15 1 ha' 1. \\'hile 1cduc1ion in wc:ed densit) and dr) matter accumulation \\3' hlj!hcst 11ith application of 75% NPK t I· YJ\.1 I 0 t ha·• and it wa' nwr.: c~:onomical due to higher gross returns. net r.:turns and B:C rn11u. Among the weed munagcmcnt practices, weed control treatments gave significantly higher) ield anributes compared to 11ecd} ~heck. fcnoxaprop I 00 g ha·1 + ,arfcntr.uone I 0 g ha'1 wns tound more cffccti\e 01er pendim.:thalin 1.0 kg ha'1 anJ fenoxaprop 100 C h:!' ..m~ hulfuron ·tO g ha·•. Grain ) iciJ e\hibited significant I'Driation under nutrient and 11ced nlJJI:lg~mcnt practices, Tho: mean contribution of Phalart.\ mmar in total 11c:ed population at 10 u.\s was 17.40, 19.36 and 20.38 per cent in 75°/o 'IPK + I·Y~I 10 I ha'1. roo·~ 'JPK and .50~;, \IPK + m t 15 t ha'1. \\'hile mean contribution of Awna ludm·truma and Cllcnup!lcflllm album m tot;tl w.:cd denstty was 15.0 and 13110 per cent at JO D.\S stage. \\'~~'tis density tended to decline with advancement in crop ug.: irrespectile of the treatments. \II 11ccd ~:ontrol trcatmcnb ••:11e stgniticantly higher wheat )icld compared to 11~-cJy check. 'b ut apphcation of fenoxapropc: IOU g ha' I + carfentrazone 10 g .hu· I comparable. 111.1 h 1110 I1 and 1,.:cJmg \\il.S superior to u!luthcr 11ced cuntrol treatments. I ht' 1reatment ha1 1~g bcncr weed control. higher nutrient uptal.e rcsult.:J 111 hig~er >. ield. ~ct r;~un~~ '!"J B:~ ratiO comr:!n~ble with two hand 11ecding. I hcn:forc. a ct>mbmauon ol 75 ,. \II K -r F\ \1_ 10 I h.t and f••rwx11prop 100 g ha 1 ~ c~rli:ntra7<>nc 10 g ha'1. ma) b.: rc.:ommendeJ lor bcth:r \\ccd control. higher yield, higher proJucti\11) and net return,.