Hollow Turnips: Boron deficiency, Brown heart?

My turnips last year had a small hollow spot in them. I find two options online. One, slugs - but there's no access tunnel; I really don't think that's what happened in my case. Two, "brown heart" due to boron deficiency... Has anyone seen brown heart to be able to say if that's what the problem is? Or had hollow turnips? Nothing was mushy so I don't think it's a severe deficiency and I know boron has to be added very carefully... Maybe this just some sort of uneven growth issue?

It looks like no one has an answer.

If you get some more like that can you slice one in half from top to bottom take a picture or two & post them onth thread , so we can see a complete sectional view .

 If it is slugs or other grubs / creatures attacking the flesh early on , the insides will be scalloped and scabbed over ( normally ) .

 If you can grow cauliflowers in your beds it's not likely to be a boron deficiency as they need it to produce good heads of flower l.  Same with dark green cabbages if you can grow those well  boron is present in reasonable quantities .

 I myself  think it may also in part  be a watering issue where it started to get enough water for a while then went through a sudden dry period of a few weeks & then had it resolved . I have had similar parsnip & turnip root form shapes on some of the ball rooted parsnips in our veg beds when I was setting the automatic watering system up & before I purchased a decent long moisture testing probe .

I guess that in the dry period the plant shuts down goes hard and dense internally ,  then suddenly expands with quick growth when it gets the water it needs thus causing the internal splitting . Carrots suffer a similar splitting fate , so if your carrots are split top to bottom or part split you may well have the complete solution .

As an add on bit of info..
This last four years I've been giving an annual just before planting out dressing in the  my veg & flower beds a liberal sprinkling of Epsom salts & a dose of borax solution every other year , to ensure that boron & magnesium is there specifically to grow my caulies & give the flowers that little extra depth of colour. prior to doing that I couldn't get the caulies to produce a sensible curd . It is suppose to be released if you use dung based manures in your composting but there didn't appear to be enough in mine despite the nine or so different animal dungs c/w associated beddings I used when making my composts from scratch for all our 21 new beds .

Apply household borax at a rate 1 tablespoon Borax to 12 quarts of water prior to planting & then the second dose after planting.
This amount will treat a 100 foot row of vegetables or 10 square feet of soil. Apply two times 2-3 weeks apart.


 If you put , "  Boron deficient turnips " into Google and look  in the images part, you'll see classic pictures of how a Boron deficiency affects your crops.

I, too, would need to see a cross-sectional cut to make a call.  It doesn't fit with slug damage.  And honestly, the images of brown heart/boron deficiency do not match what you have pics of.  Did you cut into the turnips?  What did it look like?  Was the overal texture affected? Pithy?  Was it super hot or uneven water especially early on?

Once a crack starts in the root crop  or brassica stem   you'll often get fly lava ,baby slugs, very fine thinner than cotton thread worms ,  small 3/4 inch long centipedes & millipedes taking up residence in the crack & feeding on the plant .

Sometimes it will stay wet in the area of feasting because of rain or the plant fighting back & at  other times when the creature dies or moves on it will dry off & have a slight scabbing colour a bit darker than the skin of the plant .