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Crop yield response to water - Cra

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TAbLE 1Duration of the main phenological phases of wheat in days from sowing (S)for various wheat producing areas.wheat areas S-Emergence S-Heading S-Anthesis S-maturity Cultivar typeCentral and Northern Europe 12-48 54-250 71-280 spring, winterItaly 12-19 62-166 67-170 100-213 springChina 67- -217 83-251 spring, winterIndia 4- ca. 77 70-103 85-145 springRussia 39- 76-305 spring, winterNorth Africa and West Asia 6-16 116-138 158-178 springUSA 55-210 113-310 spring, winterCanada 5-15 50-250 90-300 spring, winterSouth America 6-12 70-135 112-186 springAustralia 7-17 35-90 60-170 90-215 spring, winterFIGURE 3 Typical developmental stages of wheat.sowingemergencefirst tillerfloral initiationfirst nodeterminal spikeletflagleafliguleheightreach max. growth rate: up <strong>to</strong> 250 kg/ha/day dry matter and 3 kg N/ha/daybasespikepeduncle4th node3rd node2nd node1st nodeleaf.: 1 2 3 4 5 6 7 9 11 main stem leavesleaf emergencebootingheading flowering kernel growthestablishemergence - tiller - survivalspike growthgrain growthspike initiationpotential - kernel number - actualpotential kernel sizestem elongationpedunclewheat 95

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