D.O. Ligeyo, J. Wanyama, E. Saina, O.M. Odongo and J.A.W. Ochieng - - PowerPoint PPT Presentation

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D.O. Ligeyo, J. Wanyama, E. Saina, O.M. Odongo and J.A.W. Ochieng - - PowerPoint PPT Presentation

Aug 31, 2022 946 likes •1.26k views

D.O. Ligeyo, J. Wanyama, E. Saina, O.M. Odongo and J.A.W. Ochieng Maize streak virus Gray leaf spot ( Cercospora zeae-maydis ) Introduction GLS result into yield losses of up to 30% Observed in Western Kenya (Kitale) in 1995 First

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D.O. Ligeyo, J. Wanyama, E. Saina, O.M. Odongo and J.A.W. Ochieng

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Maize streak virus Gray leaf spot (Cercospora zeae-maydis)

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Introduction

GLS result into yield losses of up to

30%

Observed in Western Kenya

(Kitale) in 1995

First observed in seed production

farms with incidences of more than 60%

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The project started in 2004 with the following

  • bjectives

 To screen germplasm for resistance to GLS.  To transfer identified/reported resistance to

common inbred lines through crossing and pedigree breeding, back cross breeding and sister line development.

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  • To develop new, improved varieties of maize with

resistance to Grey Leaf Spot (GLS).

  • Maintain and produce breeder’s seed of maize

varieties with high yield potential and stable performance with resistance to Grey Leaf Spot (GLS).

  • To establish baseline for assisting adoption rates of

the developed maize technologies through ex-ante

  • n-farm surveys.

Objectives Cont’d

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Expected outputs

Maize varieties with GLS resistance Adoption of improved maize varieties Breeder seed availed to interested seed merchants

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Outputs

  • 15 inbred lines with resistance to GLS

identified

  • 45 inbred lines with resistance to GLS

developed through pedigree breeding

  • Maize varieties with substantial levels of

resistance developed and released.

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KARI Kitale recently released hybrids with GLS resistance

  • Variety Yield Type Seed co
  • KH600- 15A 7.43 Top Cross hybrid E.A
  • KH600- 16A 7.80 Top Cross hybrid Freshco
  • KH600- 14E 8.19 Top Cross hybrid Freshco
  • KH600-20A 8 .60 Top Cross hybrid Agri Seed
  • KH600- 22A 8.68 Top Cross hybrid Monsant
  • KH600-23A 9.5 Top Cross hybrid ADC
  • KH600-24A 10.5 Top Cross hybrid NASECO
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KH600-20A

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KH600-23A

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KH600-24A

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Outputs Cont’d

  • 6 varieties in NPT, 25 in AYT, 1 Recommended

for release

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Ex-ante survey

  • An ex-ante survey on incidence and severity of

GLS was carried out in 8 districts

  • Based on the key informants responses, most
  • f the farms(over 75%) were infected with GLS

disease across all AEZ’s

  • Most respondents(over 60%) indicated that

GLS disease occurred in almost all the years

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KH600-15A

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ORGANOLEPTIC TASTE APPRECIATION

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Monitoring visit by USAID team at one of the advanced yield trial sites at Naitiri in Bungoma District.

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Output Cont’d

  • Developed varieties popularized
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Assistant Minister of Agriculture, Hon. Gideon Ndambuki observing KARI maize varieties at Kenya Maize Development Fair at Chepkoilel Campus

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Output Cont’d

  • Breeder seed availed to interested seed

merchants (ADC, NASECO, AGRI SEED, E.A SEED, FAIDA, MONSANTO)

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Seed treatment in progress at KARI-Kitale in January 2011.

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Packing of breeder seed of parental materials of KH600-20A at KARI Kitale

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Collaborators

  • CIMMYT, KMDP,ACDI/VOCA, East Africa

Grain Council, Ministry of Agriculture, FIPS, CGA, Seed Companies and Several NGO’s in Agriculture.

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CHALLENGES

 Emergence of new diseases  Seed companies rarely declare the amount of

seed they have sold

 Once an agreement is signed it is the seed

companies who decide the amount of seed to produce

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SO7 Work plan January to March 2013

 Pollination of the materials in the off season

irrigation nursery- February/March

 Seed counting and packaging- March  Ploughing- February  Re-ploughing- early March  Harrowing- Mid- March  Harvesting of the materials in the irrigation

nursery- Late March

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SO7 Work plan January to March 2013 Cont’d

 Submission of 2 varieties for DUS and 3 varieties to

KEPHIS- Mid February

 Cutting pegs- February  Field marking- End of March  Data analysis- January/February  Site selection- Early February  Promotion of developed KARI maize technologies-

February to March

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Proposed BUDGET for February and March 2013

Code Description February March Total 2110202 Casual Labour 107720 104,904 212,624 2210303 Daily subsistence allowance 90,250 84,250 174,500 2211004 Fungicides, Insecticides and Sprays 830 830 1,660 2211023 Supplies for production 73,320 44,900 118,220 2211101 General Office Supplies 12,200 12,200 2211201 Refined Fuels and lubricants for transport 14,000 10,500 24,500 2211203 Refined fuels and lubricants (Ploughing) (lts) 30,500 20,000 50,500 2211311 Contracted Technical Services 504,000 504,000 2220101 Maintenance Expenses-Motor Vehicles 20,400 34,400 54,800 TOTAL BUDGET 841,021 311,984 1,153,005

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Acknowledgement

USAID SO7 for sponsoring this project

and director KARI for financial logistical support.