Does this sound like deficiency or pest?

Ok unfortunately I can't get a clear picture but basically every now and then I go check my plants and therell sometimes be a spot or two of new growth that is completely shrivelled dry and crumbly. No droop before just healthy looking growth one day next day bone dry and crumbly. It's always the tips the youngest leaves, and there is usually a tiny split along the stem as well. So my question is is this a deficiency (I'm thinking not only because deficiency starts at the bottom and works up) or is it what I'm leaning toward, some kind of little bug getting in there and sucking it dry? Cause it completely drys the whole head I basically have to top wherever it happens

PICS WOULD HELP LAD
-JOHN

Don't have any, that's why I provided visual descriptions. Scattered spots of shriveled crumbly growth, rest looks absolutely fine - is that soundin like a bug problem or a nutrient problem

sounds like pests to me mate.

BleedsGreen said:

sounds like pests to me mate.

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That is what I thought, simply because I read many times deficiency always starts at the bottom. I sprayed them with pyrethrum and I'll do that each week, just hope that's enough :/

BleedsGreen said:

sounds like pests to me mate.

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My yard does get a lotta caterpillars, but I always thought they just munch holes not suck dry. The leaves always seem whole just completely shrivelled. Like you could smoke it dry

Sounds like you got russet/broad mites but no way to know without pictures.

waterproof808 said:

Sounds like you got russet/broad mites but no way to know without pictures.

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Just googled them, nah they don't seem to cause the same symptoms