迎接挑战：麦芽大麦倒伏和发芽管理创新.pdf

1、Rising to the Rising to the Challenge:Challenge:Innovations to manage lodging and sprouting in malt barleyMitchell Japp,Research and Extension ManagerGenetics:poor straw strength Genetics:poor straw strength Fertility:+K for stem strengthFertility:+K for stem strength&-N N Seeding rate:Seeding rate:

2、-plant standplant standPlant Growth Regulators(PGRs)Stem shortening effectResponse depends on environment,variety and year.Two productsManipulator(Chlormequat Chloride)Moddus(Trinexapac-ethyl)Figure 1.Gadsby barley grown at Barrhead,Alberta on August 8,2016.Left:Chlormequat chloride(the active ingre

3、dient in Manipulator).Right:Trinexapac-ethyl(the active ingredient in Moddus).PGR treatments were applied at GS 31-32.Management1Seeding RateSeed TrtN(soil+fert)PKPGRFlag Leaf fung.FHB fung.A200 seeds/m290 kg N/ha15 kg P2O5/haB300 seeds/m2120 kg N/ha30 kg P2O5/ha15 kg K2O/haC300 seeds/m2yes120 kg N/

4、ha30 kg P2O5/ha15 kg K2O/haD300 seeds/m2yes90 kg N/ha30 kg P2O5/ha15 kg K2O/hayesE300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesF300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesyesG300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesyesyes31.6 a29.2 a25.7 b29.9 a29.1 a24.4 b25.1 b010

5、20304050ABCDEFGEffect of Management on Barley Yield for Low Yielding Sites15.2%16.1%16.2%15.4%15.8%16.5%16.6%Source:Mike Hall,East Central Research FarmManagement1Seeding RateSeed TrtN(soil+fert)PKPGRFlag Leaf fung.FHB fung.A200 seeds/m290 kg N/ha15 kg P2O5/haB300 seeds/m2120 kg N/ha30 kg P2O5/ha15

6、kg K2O/haC300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/haD300 seeds/m2yes90 kg N/ha30 kg P2O5/ha15 kg K2O/hayesE300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesF300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesyesG300 seeds/m2yes120 kg N/ha30 kg P2O5/ha15 kg K2O/hayesyesyes68.8 c80.6