Thumbnail Image

Theses

Browse

20191
Reset filters
Subject: Agronomy × Author: Abdullrasheed × Start date: 2010 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Herbicide resistance management of Phalaris minor through sequential applications of pre and post emergence herbicides in wheat” (Triticum aestivum L.)
    (CCSHAU, 2019) Abdullrasheed; Punia, S.S.
    Phalaris minor, the omnipresent weed of wheat is truly influencing its efficiency and gainfulness in the significant grain-creating regions of Haryana. The threat of P. minor has exacerbated after it developed herbicide resistance from wheat herbicides. For objective proposal and implementation of the weed management, it is basic to evaluate and measure the dimension of resistance in P. minor populaces. In this way, one investigation were directed under the examination entitled, ―Herbicide resistance management of Phalaris minor through sequential applications of pre and post emergence herbicides in wheat” (Triticum aestivum L.) at Department of Agronomy, CCS HAU, Hisar. The idensity iand idry iweight iof iP. iminor iwas isignificantly ireduced iwith ithe isequential iapplication iof iPRE ipendimethalin i+ imetribuzin i(RM) i2.0 ikg iha-1 ifb iPOE imesosulfuron i+ iiodosulfuron i(RM)14.4 ig iha-1, ipinoxaden i50 ig iha-1 ior iPOE isulfosulfuron i+ imetsulfuron i(RM) i32 ig iha-1. POE iclodinafop i60 iand i120 ikg iha-1 iremained iless ieffective ithan iPRE ipendimethalin i1.5 ika iha-1 ialone iand ipendimethalin i+ imetribuzin (RM) i2.0 ikg iha-1 ihad ihigher ivalues ifor idensity iand idry iweight iof iweeds. The isequential iapplication iof iPRE ipendimethalin i+ imetribuzin (RM) i2.0 ikg iha-1 ifb imesosulfuron i+ iiodosulfuron (RM) i14.4 ig iha-1 ior isulfosulfuron i25 ig iha-1 ihad ilower iweed iindex i(WI) ivalues ithus ireflecting iless ireduction iin icrop iyield iin ithese iplots. While iweedy icheck ifollowed by iPOE iclodinafop i60 ig iha-1 ihad imaximum ivalues iof iWI. Wheat iyield iattributes iwere isignificantly ihigher iwith ithe isequential iherbicide itreatments iof iPRE ipendimethalin i+ imetribuzin (RM) i2.0 ikg iha-1 ifb imesosulfuron i+ iiodosulfuron i(RM) i14.4 ig iha-1 ifollowed iby iPRE ipendimethalin i+ imetribuzin i(RM) i2.0 ikg iha-1 ifb isulfosulfuron i+ imetsulfuron i(RM) i32 ig iha-1 iand ipinoxaden i50 ig iha-1. Benefit: cost iratio iwas iobserved ito ibe imore ifor ialone iPOE iherbicides ithan itheir irespective ivalues iin sequential iapplication ifollowing iPOE imesosulfuron i+ iiodosulfuron (RM) i14.4 ig iha-1 (2.32). Whereas, the lowest igross ireturns, inet ireturns iand ibenefit: icost iratio iwere iobserved iwith ialone iPOE iclodinafop i60 ig iha-1 ifollowed by iclodinafop i120 ig iha-1. The results of present study advocated that PRE followed by POE herbicides are effective for the control of resistant P. minor population. Another perspective of resistant weed management is the use of herbicide mixtures and sequences in order to execute multiple modes of action on the target weed flora. iFrom ithe iherbicide imixtures iand isequences iexamined iin ipresent istudy, ithe isequential iapplications iof iPRE ipendimethalin i+ imetribuzin i(RM) i2.0 ikg iha-1 ifb imesosulfuron i+ iiodosulfuron i(RM) i14.4 ig iha-1 ifollowed iby iPRE ipendimethalin i+ imetribuzin i(RM) i2.0 ikg iha-1 ifb isulfosulfuron i+ imetsulfuron i(RM) i32 ig iha-1 iand ipinoxaden i50 ig iha-1 iwere ithe imost ieffective itreatments ifor ithe icontrol iof iresistant iP. Iminor as icompared ito ialone iPRE ior iPOE iherbicide itreatments.