Early-season peanut issues in South CarolinaEarly-season peanut issues in South Carolina
• Although the rain is needed, it is starting to cause a few problems for growers in regards to weed and early season pest/disease management. • The peanut crop is also feeling the effects of the rain and cooler temperatures.
June 8, 2012
The rain seemed to continue to fall at the Edisto REC and across much of the peanut growing areas of the state the early part of the week.
We have received more than inch over the last few days not to count the rain from tropical depression last week. This is a change in pace from the last few years where you could not beg for a rain shower in May/June.
Although the rain is needed, it is starting to cause a few problems for growers in regards to weed and early season pest/disease management. The peanut crop is also feeling the effects of the rain and cooler temperatures.
A few germination and vigor problems have been observed with only a few select fields needing to be replanted or spot planted. Replanting is only warranted if you have less than 3 seed per foot of row or have large gaps. Fields with 3 per foot or greater should have the opportunity to obtain maximum yields.
I would suggest contacting your county agent and myself if you think you need to replant or have replanting questions.
Overall crop growth has also slowed due to the cooler temperatures.
With some of the crop reaching the 30 to 50 day range, there are a few things to consider:
1.) Remember Gramoxone is not recommended after 28 days after ground crack (35 days after planting).
2.) For the 40-45 day peanuts, a fungicide program needs to be initiated. You may want to start a little earlier in fields that were planted in peanuts last year (no rotation). We could see disease issues get started a little earlier in these fields or in fields planted with varieties susceptible to leaf spots and white mold, especially with the current environmental conditions we are experiencing.
3.) Land plaster/gypsum should be applied at this time. Initiate at 35 days after planting. I know you may be a little late due to the rain, but try to get it out as quick as you can. It is better to be early than late.
4.) With the excessive rain received throughout the state, peanut growth and color may be a little off compared to last year. If you are seeing light green peanuts you can start to check taproots around 45 to 55 days after planting to determine if you have nodulation problems.
5.) We are seeing thrips damage in some fields where insecticide hoppers stopped up or malfunctioned. Orthene (acephate) can be applied if needed.
These are just a few issues we are dealing with currently. Please give me a call if you are having problems. I would be happy to help.
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