Monday, June 30, 2014

IPM Notes from June 26, 2014

The sweet corn is in leaf stage 5. The weeds in the sweet corn field, as noted in the IPM notes the last two weeks, were recently sprayed and many are dying off. It remains to be seen if the larger weeds at the far end of the field will be killed-off. The larger the weed the more difficult to eliminate. The sweet corn is firing at the base and will need to be sprayed with nitrogen. The cereal leaf beetle is also a minor problem.

The field corn is in leaf stage 7. The field corn next to the wheat field shows a tremendous amount of window paining from the cereal leaf beetle. The beetle has left the drying wheat field for the greener field corn. There is also evidence of fras in the corn from the European corn borer.

The popcorn was planted last week and is already sprouting. The popcorn will be alternating with three rows of red and three rows of the yellow variety this year.

The soybeans are just sprouting and are in the unifoliate phase. A few have been eaten by deer or groundhog.

The wheat field is still drying out. Much of the wheat from the edge of the field have missing heads. These have been eaten by deer and birds.

The alfalfa field was just cut several days ago for the second time this year. A plastic 18 inch square was thrown into the field several times to randomly estimate the percentage of alfalfa, orchard grass and weeds that were growing. The alfalfa field still shows a fairly good growth of alfalfa and orchard grass in its second year. The alfalfa field was swept with nets, and a fair amount of small alfalfa weevils were found. They should be monitored in the future.

In the demonstration plots bacterial leaf spots were found on the tomato plants. The two outside rows of the strawberry plot still show powdery mildew, and will have to be sprayed again. The peanut plants show some light coloring in the leaves and will need potassium. The hops show a disease on the leaves. The peppers have rebounded slightly after being sprayed with water and epsom salts, and fertilized.

Below are the summaries for the insects caught in the three insect traps.
  • Trap 1 (Black Cut Worm) – 1 each of a lady bug and bumble bee.
  • Trap 2 (Fall Army Worm) – 4 Fall armyworms, 1 bumble bee, 1 lightning bug.
  • Trap 3 (European Corn Borer) – 2 lightning bug, 1 lygus bug, 1 plant bug.