Proceedings of the Fifth Asian Regional Maize Workshop - Search ...

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0\ 0\ ."'0- ~I.u'. u: 0 50 100 STATllTE MILES ... II ;. - ""L I b' ~ PELUC VERTISOLS fZ:Z:l ORTt-ilC ACRISOLS..JjTHC a .aaIHc.ACRISOLS b;'lf:1 EERRIC ACRISOLS !%=:-:=-d GLEYlC .e-OlISOLS. r77TT.I UTHOSOLS. CHROMIC LLMSOLS l'LLLLJ AND CALOC CAMBISOLS UIIID DYSTRIC f'lTOSOLS ~ EEBRIC LWISOLS ~ DYSTRIC GLEYSOLS I:..,','J EllTRlC GLEYSOLS A"'''UAL AVE"",GE, P"Ec.lpif~Tio,.. (iaoHytTSi.. M.... ) i:2po.p.o r ~. Vi. 0 '0. 1ft "l"'~ rl'J ••• .,- .Scut:o:FAOIUNESCO Soli Map 0' Ihl. World 40.;- t~'1· i?~ .... Fig. 2, Soils in Lao PDR. Fig. 3. Isohyets for annual rainfall distribution in the Lao PDR. 0
8 Price infonl8.tioo: Table 3. Shows variation in prices of various corn types and fertilizer. Year 1987 1988 1989 1990 Com - Field corn 35 45 60 62 (Kips/kg-grain) - sweet corn (Kips/ear) 15 15 20 30 - Baby corn (Kips/kg) 80 80 95 100 • Fertilizer prices - 15-15-15 (Kips/bag) 3500 6200 6500 9500 - 16-20-00 (Kips/bag) 3600 6500 7000 9200 - Urea 4~ (Kips/bag) 3000 6000 6500 8800 1991 1992 65 70 50 50 100 100 11000 12000 9800 10000 9200 9500 In 1993; lUS$ = 700 Kips. 9. Research progr_ (5 years): Maize research will focus on open pollinated varieties for food, for dual purpose (food and feed), and for animal feed. Hybrid varieties are not suitable for Lao farmers. Emphasis will be put on more on-farm research in the northern provinces (major maize producing areas). Activities will include the following: A. Varietal improvement (Selection and plant breeding): The aim is to identify a range of different suitable open pollinated varieties (or populations) to be grown by farmers in different environments. Selection criteria will depend on the maize utilization. For food maize, criteria will be grain quality, early to medium maturity, and yield. For dual purpose maize (food and feed), criteria will be grain quality, yield, and healthy grain. For feed maize, criteria will be yield, healthy grain, and plant architecture. Resistance to downy mildew disease is an important criteria for all types to be grown in the lowlands. Activities will include: a. Collection, characterization and evaluation of local varieties grown by farmers for all types of maize. b. Establishment of a simple gene bank for the germplasm collection in collaboration with an international institution. c. Introduction and evaluation of improved material from abroad. d. Mass selection in HDK 4 and other promising material. e. 51-52 recurrent selection scheme if enough specialized manpower is available. 1. SCreening of varieties for pest and disease resistance with emphasis on downy mildew (collaboration with Plant Protection). g. On-station and on-farm replicated yield trials for the different types of maize. h. Seed selection and basic seed production inclUding breeder seed and foundation seeds. i. Preparation of an annual catalog ~ith the different types and varieties of maize evaluated by the researchers for use by the extension personnel. Food maize, feed maize, food and feed maize, duration, and all required data for cataloging. B. Cultural practices (Agronomy and cropping systems): The objective is to develop appropriate cropping techniques for the farmers according to different types and varieties, different cropping systems, and different agroecological conditions of the important regions. Main activities will include: a. Diagnostic surveys in the major maize producing regions with prioritization of constraints for maize cultivation in the different cropping systems. 67
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Proceedings of the Fifth Asian Regi
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Page Foreword List of participants
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For several years, the Asian countr
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LAOS MALAYSIA MYANMAR NEPAL PAKISTA
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Chamnan Chutkaew Dept. of Agronomy
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I t· PRIVATE PRIVATE SECTOR: SECTO
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Pioneer Overseas Corp. ProAgro Seed
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MP COP NGOs TK = Muriate of Potash.
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Table 3. Land suitability for maize
Page 21 and 22: Depending on how this wheat is rele
Page 23 and 24: Individual field sizes in the GKF a
Page 25 and 26: Table 12. Demonstration block resul
Page 27 and 28: alance of composite, synthetics and
Page 29 and 30: Elias, S.M., F.S. Sikder and J.Ahme
Page 31 and 32: ~IZE ItAIMJ4ENT PRXJW4ME IN IHlf'AN
Page 34 and 35: 3. Low level of soil fertility. Exp
Page 36 and 37: 3. Farmers could not afford to purc
Page 38 and 39: Table 1. Hybrid maize production in
Page 40 and 41: 100,000 mu (1 ha = 15 mu). Fran 198
Page 42 and 43: + The planting area of inbred line
Page 44 and 45: ty levels. Selection interia should
Page 46 and 47: Dao13, Oa19, SSE232 etc.). b. combi
Page 48 and 49: ~ZE I~ IN IN>IA - AN OVERVIEW WITH
Page 50 and 51: inbred 1ines possessing good genera
Page 52 and 53: Table 3. Details of medium and earl
Page 54 and 55: increasing the yield levels of the
Page 56 and 57: Production of ~zygous diploid inbre
Page 58 and 59: EntQllOlogical research. In the fie
Page 60 and 61: A 1) OUr coordinated efforts for ma
Page 62 and 63: Table 1. Maize area harvested, proW
Page 64 and 65: Table 4. Grain yield of Semar 1 and
Page 66 and 67: ut they have been selecting ears fr
Page 68 and 69: MAIZE ~ N«J ~ION IN LAOS. Kanyavon
Page 70 and 71: to rice in order to reach self-suff
Page 74 and 75: . According to the findings of the
Page 76 and 77: IR:EDIIIG IHJ N:RHJotIC RESEAfDI C
Page 78 and 79: tion with estate or mini-estate typ
Page 80 and 81: Table 4. MYR grain maize yields ove
Page 82 and 83: techniques. References Anonymous. 1
Page 84 and 85: Table 1. Total area under maize and
Page 86 and 87: Year Township Area planted Total pr
Page 88 and 89: cover, short plant stature, and sat
Page 90 and 91: Table 3. Res.Stat. Multilocational
Page 92 and 93: 3. Plant protection: a. Diseases Th
Page 94 and 95: Questions to the author: FROM: S. K
Page 96 and 97: were unacceptable in some parts due
Page 98 and 99: Table 2. CCRI maize hybrid yield tr
Page 100 and 101: HYBRID MAIZE BREEDlt.G AN> ALH»DII
Page 102 and 103: of highly productive technologies,
Page 104 and 105: Maize varietal improvement continue
Page 106 and 107: Peronosc lerospora phi 1ippinensis
Page 108 and 109: elow to help clarify the farm level
Page 110 and 111: Premium Grade (emulsifiable concent
Page 112 and 113: support. The versatile planter/fert
Page 114 and 115: Table 1. Climatic conditions in the
Page 116 and 117: T1l1t:i----------------------------
Page 118 and 119: the maha season. Yala season is cha
Page 120 and 121: . Spacing Blackgram Maize 40 em x 5
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Sri Lanka. Ariyanayagam, R. P. 1967
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It took almost 10 years to develop
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g; CUS0 4 (5H 2 0): 0.39 g; NaF: 0.
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3. Making single cnosses: Plant the
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experiments showed that the fertili
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Long term evaluation of mass releas
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Chang, S.C., and Y.Z. Wu. 1976. Pra
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DEVELCHENT OF HYBRID ~ IN THAILAN>
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Table 2. Quantity and value of Thai
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was approved by KU and OOA in 1991
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Table 8. Mean yields of fresh dehus
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4. Prevention and control of aflato
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Table 17. Mean grain yield and agro
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Sittipanuwong, S., C. Chutkaew, A.
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Early rainy season plantings have a
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P. R.CHINA TMilAKD CAMPUCHiA
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In 1992, the hybrid maize acreage i
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organizing visits as well as field
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Table 1 Area, production and yield
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plants per hill) 4. Intercropping e
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VIEl1'W4 YELLOW MAIZE EXRRT: MARKET
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6,------------------~3,5 Producllon
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MAIZE BREEDUG Arnel R. Hallauer-L!
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method was provi ded by Eberhart (1
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can vary by the complexity of inher
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Table 3. Response to selection for
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Table 5. Comparative responses for
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increased response for grain yield.
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Sure Crop (0h43 and C103). several
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Sprague and Tatum (1942) demonstrat
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Horner, E.S., E. Magloi re, and J .
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evaluation are conducted in only on
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Table 1. Maize: Production Unit 100
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Table 3. Maize: Area harvested Unit
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v) Incentives to private sector are
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possible through adoption of suitab
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will be described highlighting thos
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will fluctuate. As a general rule,
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help of maize breeders from the nat
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Table 4. Possible heterotic partner
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use as OPVs and broad based synthet
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c. Integrat;on of populat;on ;mprov
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Table 8. Announced CIMMYT lines 199
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HYBRID MAIZE ~ 1l£ SMALL-SCALE FNI
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Table 2. Growth rate of maize area
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At the same time that CIMMYT was sh
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when grown under farmers' condition
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seed often varies substantially bec
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kilograms of maize grain that must
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Table 8. COst of producing, process
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case in which the hybrid replaces a
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J i-----1'-_.,-_I........ i M*iIBia
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egions which do not allow a suffici
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participation; where foreign compan
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Wellhausen, E.J. Walden (ed.) 1978.
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To recover value, seed companies ca
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In recent years, many new companies
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nology and its reliance on patents,
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Table 6. Intellectual property righ
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for crop improvement programs. It i
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capabi 1ities Despite these constra
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TftNlAlll CAMPUCI-1iA Fig. 1. Seven
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* Yield potential of 8.0 t/ha. II.
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CAOOILL MAIZE RESEAFDI ACTIVITIES I
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RESEARCH AN> POTENTIAL OF HYBRID (X
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ClBA SEEDS IN SJJ11£AST ASIA. Jose
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ACTIVIlY OF MAHYOO IN INJIA Rajendr
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PACIFIC SEEDS - PlANT ~ FOO ASIA Pe
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Questions to the author: FROM: R. S
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Just start In 1980 the demonstratio
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VOLUME 1000 IQnt/ 10.--------------
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(Notes by Dr. V.L. Chidley, Raporte
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1. Rhizoctonia leaf and sheath blig
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