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M.C. Saxena Our root studies do show that the winter-planted crop is able to develop lot more roots in the favorable environment than the spring crop and this should help in more uptake of nutrients and water to cope up with the requirement for improved growth. Studies on soil moisture extraction by midwinter- and spring-planted chickpeas during 1979-80, in collaboration with the SWAN group of the Farming Systems Program, did show that winter-planted chickpeas drew more moisture from deeper layers and extracted moisture from greater depth than the spring crop. 139
Proceedings of the Workshop on Ascochyta Blight and Winter Sowing ofChickpeas (Saxena, M.C. and Singh. K.B., eds.), ICARDA. 4-7 May 1981, Aleppo, Syria Physiological and Moisture-Use Studies on Growth and Development of Winter-Sown Chickpeas J.D.H KEATINGE and P.J.M COOPER Crop Physiologist and Soil Physicist, respectively, iCARDA, Aleppo, Syria The adoption of a winter sowing agronornic practice has only become realistic under Syrian environmental conditions following the development of chickpea lines resistant to ascochyta blight. Winter sowing is likely to result it, the vegetative and early reproductive phase of development taking place under cool, moisture assured conditions, thus deferring the onset of the period of high evaporative demand and consequent moisture stress to c-op's later growth cycle. Potential productivity of winter-sown chickpeas should 'hus be enhanced in comparison with the traditional spring-sown ones. However, the interactions between physical environmental factors, :uch as radiant energy interception, moisture supply and temperature, and growth and development are usually complex. This particular experiment is designed to investigate these interactions, to examine the intensity and timing of onset of the significant environmental constraints on potential chickpea productivity. In addition, the ascochyta blight resistant lines can currently be subdivided in terms of their br nlching morphology being either of an erect or spreading habit. Such morphological differences may well result in genotype-environment interaction and in broad terms these are considered in this experiment. Methodology One line representing each morphological group was selected, for the erect group - ILC 72 and for the sprea'ling group - ILC 482. These lines were handplanted in early November 1980 at a rate sufficient to achieve what is currently considered to be optimum stand r'ensity, i.e. 300,000 plants/hectare. An additional treatment was employed in the erect line in which a superoptimal density of 600,000 plants/ha was established to examine the effect of more rapid canopy 141
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A14 ""..."W~e S~wn ofCh all il NM I
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WORLD CROPS: PRODUCTION, UTILIZATIO
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Copyright (c) 1984 by ICARDA All ri
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VI THIRD SESSION: WINTER SOWING Agr
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Foreword The advancing of sowing da
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Editors' Note The idea to hold this
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Chairman, Ladies and Gentlemen, Ope
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4 including stunt virus (pea leaf r
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6 in with Iarmers'plans and proposa
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8 about 130 to over 200 days, where
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10 Table I Mean yield and range of
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12 International Yield Trials A 10-
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14 small plots on farmers' fields i
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16 HANOUNIK, S.B. 1979. Diseases of
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18 diospores (Khune and Kapoor 1980
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20 2. Reproduction Asexual. The ase
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22 surface. However, the fungus los
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24 observed small reddish brown spo
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26 Reddy and Nene (1979) developed
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28 suggested the application of pot
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30 ASKEROV, I.B. 1968. Ascochytosis
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32 NEMLIENKO, F.E. and LUKASHEVICH,
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Proceedings ofthe Workshop on Ascoc
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100/ ILC 1929 90 -80./ 8o0 / ILC
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30 24 18 12 6 Temperature (°C) t6
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I I -I - --ii ' Disase Ic I ii I'll
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infected seed is a much more potent
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Proceedingsof the Workshop on Ascoc
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early February were found to give e
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pot assembly consists of a stem tha
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Table I A quantitative 9-point rati
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inoculating the plants by uniformly
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Proceedings ofthe Workshopon Ascoch
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Table I Cultural characteristics of
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Line/ Table 2 Disease grades produc
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India and Iran were highly sporulat
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LUTHRA, J.C. and BEDI K.S. 1932. So
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J.S. Grewal There are more chances
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68 Table I Summary of results of sc
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70 Table 3 Summary of results of sc
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72 ery originated from the USSR, Sp
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Table 7. Contd. Rating on 1-9 Scale
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Table 8 Contd. Rating on 1-9 Scale
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Table 9. Contd. Entry Origin Rating
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Table 10 Differential reaction of s
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82 1069, 1467, 1591 were found resi
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84 ing of the remaining collections
Page 95 and 96: 86 AUJLA, S.S. 1964. Study of eleve
Page 97 and 98: Proceedings ofthe Workshop on Ascac
Page 99 and 100: Parents diallel cross F1 diallel cr
Page 101 and 102: R.Pieters Malic acid is known to ha
Page 103 and 104: 96 (Hawtin and Singh 1983). Asv.-,h
Page 105 and 106: 98 3. Identification of as many sou
Page 107 and 108: 100 Germ. Evaluation Disease Res. M
Page 109 and 110: 102 Robinson (1976) has further dev
Page 111 and 112: 104 and by the time a multilinc cul
Page 113 and 114: 106 lines will then be made availab
Page 115 and 116: 108 GILL, K.S., NANDA, G.S., SINGH,
Page 117 and 118: 110 the program for the development
Page 119 and 120: 112 where they are not present. See
Page 121 and 122: 114 cides have been found to be eff
Page 123 and 124: 116 indicates that this propagate i
Page 125 and 126: 118 Great care must be exercised in
Page 127 and 128: 120 nature. Ascochyta propagules on
Page 129 and 130: 122 ZACHOS, D.G., PANAGOPOULOS, C.G
Page 131 and 132: 124 0 40 g30 Max 30 20. .,,10 Min ,
Page 133 and 134: 126 ranged from November 22, 1978 t
Page 135 and 136: 128 Genotypes Table 2 Grain yield o
Page 137 and 138: 130 Response to Plant Population Th
Page 139 and 140: 132 ILC 1929 at Tel Hadya and ILC 4
Page 141 and 142: 134 Data in Tab. 5 emphasize the im
Page 143 and 144: 136 appears adequate, therefore no
Page 145: 138 Discussion F. EI-Sayed I am ass
Page 149 and 150: Table I The timing of reproductive
Page 151 and 152: Table 3 Accumulated water use by sp
Page 153 and 154: Es x (1 - a) x Eo t where t is the
Page 155 and 156: BRIDA cm Water /Depth Interva', 3 4
Page 157 and 158: crops extended deeper than under wi
Page 159 and 160: (as at Jindiress), the winter-sown
Page 161 and 162: eduction in the size of the crop's
Page 163 and 164: Discussion G.C. Hawtin You raised a
Page 165 and 166: Table I Nodutation and total drymat
Page 167 and 168: 162 Inoculation with single strain
Page 169 and 170: 164 These results indicate that pho
Page 171 and 172: 166 T.S. Sandhu Is there any techni
Page 173 and 174: 168 April for Tal Abaid (36*42'N, 3
Page 175 and 176: 170 At the end of the severe cold p
Page 177 and 178: 172 Table 4 Origin of lines having
Page 179 and 180: 174 stage (Tab. 6). Of the five cul
Page 181 and 182: 176 HERZOG, H. 1978. Wachsturnsverh
Page 183 and 184: Proeedings of the Workshop on Ascoc
Page 185 and 186: There is little information availab
Page 187 and 188: of the major and minor pests in thi
Page 189 and 190: attack any other important crop pla
Page 191 and 192: KAY, D.E. 1979. Food Legumes - Crop
Page 193 and 194: 190 On the other hand, two items th
Page 195 and 196: 192 M.V. Reddy It looks as if the c
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Country World ICARDA region Algeria
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196 Table 2a Export of chickpeas by
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198 India, Saudi Arabia, Venezuela
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Proceedings ofthe Workshop on Ascoc
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Chickpea Cultivation 203 In Syria m
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Table 2 Comparison of the growth, s
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Proceedings of the Workshop on Asco
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Excessive postharvest losses. Posth
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Seedbed preparation is very minimal
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carried out at the same time with w
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Table 4 Topographical classificatio
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were absorbed by the canning indust
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223 The advantages of winter sowing
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226 cultivars which could be plante
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Table 2 Area, production and yicld
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233 Threshing is mostly done by bul
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182, 192,'194,1069, 1772,3279,2380,
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238 4. Mycosphaerella pinodes and A
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240 Kausar (1960) discussed the rea
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242 Date Tale 2 Maximum temperature
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244 Table 4 Maximum temperature and
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soil moisture and therefore it is a
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Table 2 Characteristics of chickpea
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253 Table 5 Results of a trial on w
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Conclusion Chickpea in Tunisia has
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260 however, remained almost static
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262 Agricultural Universities and s
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264 greatest at flowering and fruit
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266 Basis of Resistance Kunzru and
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268 Discussion M. Aslain What is yo
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270 vars. It was assumed that the d
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Proceedings of the Workshop an Asco
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0- 400 ha ® Em 401 -1000 ha 1001 -
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277 Castille and even (1500 kg/ha)
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Table 3 'Rabia' attacks - environme
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would be pure extension. Diffusion
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284 7. The role of crop debris as a
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286 involving only a few treatments
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288 MAKKOUK, Khalid, Faculty of Agr
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