That is TRUE. Green pine needles are a little bit acid but dry pine needles are no different than dry dead grass. Jan to April we get lots of rain almost every day I hope pine needle help prevent potato hills from washing away. Record rain fall last year was 37 inches.
I was clean up and decided to burn a bunch of cardboard boxes that were all pushes down inside each other to save space. I don't want a big fire to get out of control so I burned boxes 1 at a time. Down in the bottom I found 62 seed potatoes they don't look like much but I hate to throw them out so I planted them. Wow this makes 5 rows of potatoes = 260 plants. This is the first time I have planted potatoes in Nov. at the new house this garden usually gets flooded all winter with 2" of water it rains every day. Potatoes planted March 1st then harvested 4 months later in 100° hot weather usually only produce 1 lb of new potatoes per eye. I use to get 2 lbs of new potatoes per eye at the other house when planted Nov 1st. Wait an see last year 1/2 the potato crop rotted last winter we had rain every day garden was underwater for 2 months. This year I hope hills are above the swamp and plants don't rot. If we get 2 lbs new potatoes per eye from the Nov crop that will = 520 lbs new potatoes. If we get 1 lb per eye = 260 lbs new potatoes. If 1/2 the plants rot like last year = 130 lbs new potatoes. Wait an see. If this garden didn't flood Jan to April potatoes would be easier to grow.