The Eleventh Regional Wheat Workshop For Eastern ... - Cimmyt

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300 120 250 100 Weed number 200 80 Pia n t 150 60 height 100 40 50 20 n 0 0 2 3 4 Plowing frequency (no.) I'---W-e-e-d- d-e-n- s ity -+-p la nth e ig h t (c m >1 . (n 0 . m .2> . ----.--J Fig. 1. Response of weed density and plant height (1996-97) to frequency of tillage, Arsi Negelle, Ethiopia. 0,7 6,2 6 0,6 5,8 0,5 Biomass yield 5,6 Spike length 0,4 5,4 0,3 5,2 0,2 0,1 ° ° Plowing frequency 2 3 4 1--Spike length {cm} -+- Biomass yield (kg m'~j I .~._____.._....___.____._____ 5 4,8 4,6 4,4 Fig. 2. Response of spike length and above-ground biomass yield (kg m- 2 ) of wheat to frequency of tillage, Arsi Negelle, Ethiopia. 377
Response ofweed infestation and grain yield to frequency oftillage and weed control - Tenaw 3500 ~1300 3000 250 Yield (kg ha"') 2500 200 2000 " 1500 150 1000 100 500 - 50 o - 0 0 2 3 4 Weed density Plowing frequency (no.) -----Grain yield (kg ha·'r-+-Weed density (no.1 Fig. 3. Effect of tillage frequency on weed density and grain yield of wheat (1996-97), Arsi Negelle, Ethiopia. 300 1550 250 1500 Weed no. 200 150 100 1450 1400 Yield (kg ha"l) 50 1350 o 1300 02,5 02,5+1HW 1HW 2HW Weed control [ Weed number m"2 -+- Grain yield I Fig. 4. Effect of weed control on weed density and grain yield of wheat, 1996-98, Arsi Negelle. 378
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The Eleventh Regional Wheat Worksh
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CIMMYT® (www.cimmyt.cgiar.org) is
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Table a/Contents 105 Developing whe
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Table o/Contents 366 Delayed nitrog
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e>..... I Countries participating i
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Welcome on behalfo/CIMMYT Board a/T
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Welcome on behalfofCIMMYTBoard ofTr
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CIMMYT'S NE\V APPROACH TO ADDRESS W
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CIMMYT's Global Project 5 - Pfeiffe
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SOURCES OF VARIATION FOR GRAIN YIEL
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Sources ojvariation Jar grain yield
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Sources ofvariation for grain yield
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Germplasm enhancement through molec
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Germplasm enhancement through moiec
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Gennplasm enhancement through molec
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Germplasm enhancement through molec
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QUALITY OF ETHIOPIAN DURUM WHEAT CU
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Quality ofEthiopian durum wheat cul
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On-farm demonstration ofimproved du
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On-farm demonstration ofimproved du
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Identification o/Ethiopian wheat cu
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Identification ofEthiopian wheat cu
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Identification ojEthiopian wheat cu
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GENETIC IMPROVEMENT IN GRAIN YIELD
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Genetic improvement in wheat grain
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Genetic improvement in wheat grain
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(;p.np.tir. imnrovp.mp.nl in WhP.fl
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Increasing yield potential for marg
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Increasing yield potentialfor margi
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Increasing yield potentialfor margi
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BREAD WHEAT YIELD STABILITY ANI) EN
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Bread wheat yield stability and env
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Milling and baking quality ofEthiop
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Response ofbread wheat genotypes to
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Response o/bread wheat genotypes to
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Developing wheat varieties for drou
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MILLING AND BAKING QUALITY OF SOUT
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Milling and baking quality ofSouth
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Milling and baking quality ofSouth
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Milling and baking quality ofSou th
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Response o/wheat genotypes to sowin
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Response ofwheat genotypes to sowin
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Mixtures offour wheat cultivars in
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Mixtures offour wheat cuttivars in
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THE ASSESSMENT AND SIGNIFICANCE OF
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Assessment a/pathogenic variability
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Assessment o/pathogenic variability
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Assessment ofpathogenic variability
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Assessment a/pathogenic variability
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SOURCES AND GENETIC BASIS OF VARIAB
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Sources ofvariability ofgenes for y
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PERFORMANCE OF FOUR NEW LEAF RUST R
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Performance offour new leafrust res
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HOST RANGE OF WHEAT STEM RUST IN ET
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Host range ofwheat stem rnst in Eth
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STABILITY OF STEM RUST RESISTANCE
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Stability ofstem rust resistance in
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Stability ofstem rust resistance in
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Field response o/bread wheat genoty
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Field response ofbread wheat genoty
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Field response a/bread wheat genoty
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Necessary to app~y insecticides to
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Necessary to apply insecticides to
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Necessary to apply insecticides to
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RUSSIAN WHEAT APHID RESISTANT WHEAT
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Integrated control using Russian wh
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Integrated control using Russian wh
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Development oflinear equations for
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BREEDING FOR DISEASE RESISTANCE IN
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Breeding f or disease resistance in
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Breedingfor disease resistance in w
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Breedingfor disease resistance in w
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SPATIAL TOOLS FOR WHEAT RESEARCH I
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Spatial tools for wheat research -
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Spatial toolsjor wheat research - H
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Response ofsome durum wheat landrac
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Response a/some durum wheat landrac
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Agronomic and economic evaluation o
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Effects ofsoil waterlogging on conc
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Effects a/soil waterlogging on conc
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Effects ojsoil waterlogging on conc
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EFFECT OF CROP ROTATION AND FERTILI
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Effect ofcrop rotation andfertilize
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Effect ofcrop rotation and fertiliz
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Effect ofcrop rotation andfertilize
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Effects oftillage and cropping sequ
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Survey ofweed community structure -
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Survey ofweed community stntcture -
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EVALUATION OF HERBICIDES FOR THE CO
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Evaluation ofherbicides for the con
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Effects ofsurface drainage methods
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CROP ROTATION EFFECTS ON GRAIN YIEL
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Crop rotation effects on grain yiel
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Page 335 and 336: Impact ofcropping sequence and fert
Page 345 and 346: THE INTRODUCTION OF DISEASE AND PES
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Page 351 and 352: Reducing mechanical harvesting loss
Page 357 and 358: Effects ofcrop rotation, tillage me
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Page 361 and 362: ON-FARM EVALUATION OF THE RESPONSE
Page 363 and 364: Response offour bread wheat varieti
Page 369 and 370: TIMING NITROGEN APPLICATION TO ENHA
Page 371 and 372: Timing N application to enhance whe
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Page 375 and 376: DELAYED NITROGEN APPLICATION AND LA
Page 377 and 378: Delayed N application and late till
Page 379 and 380: RESPONSE OF WEED INFESTATION AND GR
Page 381 and 382: Response ofweed infestation and gra
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Page 389 and 390: FARMER PARTICIPATORY EVALUATION OF
Page 391 and 392: Farmer participatory evaluation ofb
Page 393 and 394: Farmer participatory evaluation o/b
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Page 401 and 402: Client oriented research approach t
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Page 405 and 406: Economics offertilizer use on durum
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Page 413 and 414: On-farm analysis ofdurum wheat prod
Page 421 and 422: A study o/the adoption o/bread whea
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Farmer participatory evaluation o/b
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Farmer participatory evaluation ofb
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Farmer participatory evaluation ofb
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Farmer participatory evaluation o/b
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Eleventh Regional Wheat Workshop Pa
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