000 02639nab a22003977a 4500
999 _c27800
_d27800
001 G93369
003 MX-TxCIM
005 20220602180032.0
008 210614s2009 xxk|||p|op||| 00| 0 eng d
022 _a0261-2194
024 8 _ahttps://doi.org/10.1016/j.cropro.2009.06.007
040 _aMX-TxCIM
041 _aeng
090 _aCIS-5568
100 1 _aKanampiu, F.K.
_91198
245 1 0 _aNeeds for and effectiveness of slow release herbicide seed treatment Striga control formulations for protection against early season crop phytotoxicity
260 _aUnited Kingdom :
_bElsevier,
_c2009.
500 _aPeer review
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0261-2194
520 _aImidazolinone resistant maize seed dressed with imazapyr has been successfully used to control the parasitic weed Striga in many locations, and has begun to be commercially successful in Africa. Despite this, occasionally poor effectiveness of control had been documented in some sites that required explanation. Analysis of the data against rainfall patterns suggested that: 1. poor maize emergence occurred when there was limited rainfall at germination, possibly due to inhibition by a very high herbicide concentration too near the maize seed; 2. there was poor Striga control in seasons of very high rainfall, possibly due to herbicide washout away from the maize root zone where Striga germinates and attaches. These field assessments were matched by experiments suggesting that slow release formulations might alleviate the problems. A series of slow release formulations were synthesized based on binding imazapyr to high capacity anion exchangers and using them to coat maize seed. The best seems to be a polyethyleneimine gel. Epidemiological field data from a multitude of sites support the conclusion that the slow release formulations increased stand establishment across sites and seasons compared to the control where there was low rainfall.
536 _aConservation Agriculture Program
546 _aText in English
591 _aElsevier
594 _aINT2340
650 1 0 _aFormulations
650 1 0 _aImazapyr
650 1 0 _aPhytotoxicity
650 1 0 _aSeed dressing
650 1 0 _91279
_aStriga
_2AGROVOC
700 1 _aKaraya, H.
_9150
700 1 _aBurnet, M.
_920268
700 1 _aGressel, J.
_9513
773 0 _tCrop Protection
_gv. 28, no. 10, p. 845-853
_dUnited Kingdom : Elsevier, 2009.
_wG444112
_x0261-2194
856 4 _yAccess only for CIMMYT Staff
_uhttps://hdl.handle.net/20.500.12665/490
942 _cJA
_2ddc
_n0