Phytophthora infestans new pharmaceutical spraying period

( A ) seed disinfection after soaking in the diced potato .

( 2 ) Summer in the soil after sowing before .

( 3 ) potato foliage hand sprayers at 15 days after emergence of the first spray interval of 10 days and then sprayed again. After the closure of the line or the early onset of the spray .

Soaking seed disinfection dosage Hilfiger 800 times with 44% , 100 liters ( kg ) water plus 44% Feige Jia 125 ml . Summer with 44% Hilfiger 150 ml / ha. Prevention of late blight postemergence foliage spray with 44% Hilfiger 750-1000 ml / hectare ( acre 50-67 ml ) , or 800 times , 44% of early onset Hilfiger 1050-1200 ml / hectare ( acre 70-80 ml ​​) ,flower sprayer or 600 times, late blight commonly occurs four percent Hilfiger 1200-1350 ml / ha ( 80-90 ml per acre ) , or 500 times . Hilfiger care with Pitt , He Sheng Su mix can increase potato late blight control effect , increasing the starch content and yield .