Late ripening cotton

Spraying methods, and pesticide use . To select no wind or breeze on a sunny day , 9:00 to 15:00 for spraying . The amount of pesticides , should be based on cotton growing , then the temperature and spraying period may be. For growth vigor , application period late, low temperatures and eager Tengcha cotton fields , application rates should be increased , but the amount of pesticide per acre not more than 200 ml ; Conversely, application rates should be reduced appropriately. In the Yellow River Basin , in early October if you need spraying of pesticides per acre with 40% ethephon 100 ml , 50 kg of water , diluted evenly spraying ; if in early October to mid- late early spraying, per acre medication 150 ml, water 60 kg diluted evenly spraying. The diluted liquid into the sprayer, aligned on a blue cotton boll , sprayer evenly from top to bottom , so that everyone who needs ripening bolls are Nianman liquid.

Ethephon spraying 40% and 2%, superphosphate mixed effect. Late spraying cotton 2% superphosphate dilution with promoting premature , anti premature aging, increase production, income significant role generally yield about 5%. Are acidic because of superphosphate fertilizer, mixed with acidic ethephon , not only does not affect the efficacy of ethephon , but also on ethephon synergism , it is worth promoting local conditions . The method is: first 1 kg superphosphate fertilizer quality with 50 to 60 kilograms of open water , filtered residue , then add the required ethephon per acre , mixed well immediately after spraying.

Use ethephon to note a few questions. First, ethephon are acidic pesticides, alkaline substances decompose encounter failure , so do not mix with alkaline pesticides . Preparation of a good ethephon diluent should not be stored , to do with the preparation with the use . Second, cotton spraying ethephon , if rainfall within 6 hours after the rain need to re- spraying . Third, before spraying , harvesting should boll bolls , boll boll avoid back sprayers spraying caused decline in quality . Fourth, a strong acidic liquid ethephon , the human body has a strong stimulating effect , work to do security. Skin glue solution , they should immediately wash with soap and rinse with water. Fifth , do not outperform , buy counterfeit drugs . In recent years, there have been many kinds on the market crops ripening agent products, which are mostly agricultural administrative department for approval without registration , you can not use inferior products . Farmers should be through formal channels to purchase regular manufacturers ethephon pesticide use .