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How to stop using insecticides?
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<blockquote data-quote="yellow belly" data-source="post: 7834979" data-attributes="member: 305"><p>i have not used insceticide on wheat for 30 years </p><p></p><p>you are further north </p><p></p><p>when i last sprayed wheat looked hard for aphids</p><p> left a field unsprayed and had no bydv </p><p></p><p></p><p>when bydv came to be a problem around here we drilled barley in early september and wheat by mid september it was emerged well in september and we had some bydv early 1980s </p><p></p><p>the trials work done then showed that early emerged crops were at risk </p><p></p><p>but later EMERGED crops (october or later ) DID NOT NEED SPRAYING till the spring and then only if he weather had not controlled the problem </p><p></p><p>as most crops are now later emerged the risk is very low to non existent in the northern half of the country and any where crops are planted mid october and get weather that controlls aphids </p><p></p><p>the other risk is from aphids walking from one crop to the next </p><p>but aphids on rape or broardleaved cover are not bydv carrying wrong species </p><p></p><p>the risk is second wheats drilled on the green </p><p></p><p>identify the aphid and save a spray </p><p></p><p>at the least look for aphids on a warm sunny day if they are there they are easy to find</p></blockquote><p></p>
[QUOTE="yellow belly, post: 7834979, member: 305"] i have not used insceticide on wheat for 30 years you are further north when i last sprayed wheat looked hard for aphids left a field unsprayed and had no bydv when bydv came to be a problem around here we drilled barley in early september and wheat by mid september it was emerged well in september and we had some bydv early 1980s the trials work done then showed that early emerged crops were at risk but later EMERGED crops (october or later ) DID NOT NEED SPRAYING till the spring and then only if he weather had not controlled the problem as most crops are now later emerged the risk is very low to non existent in the northern half of the country and any where crops are planted mid october and get weather that controlls aphids the other risk is from aphids walking from one crop to the next but aphids on rape or broardleaved cover are not bydv carrying wrong species the risk is second wheats drilled on the green identify the aphid and save a spray at the least look for aphids on a warm sunny day if they are there they are easy to find [/QUOTE]
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How to stop using insecticides?
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