Do the stumps, logs, or tree limbs turn to dirt eventually when you dig a hole and cover them? What would be the impact of doing so? I personally see no impact on the soil, I was just curious how they decompose. I have a large pile of logs and would rather dig a hole with a backhoe and bury them instead of burning the pile.
They will eventually decompose, benefitting the soil, though with a large number of them as you are wanting, this will take some time--perhaps years--to fully decompose.
The logs will definitely decompose, leaving added nutrients and compost in the soil, which it does need. This provides an excellent place for earth worms, which also aids in helping the soil. Add some plants to that area, such as a bamboo, elephant ears, or even a wheat, and you not only have a composting area, but a beautiful area also.
We have an organic vegetable garden on a Caribbean island. The first year we grew a bumper crop of a variety of vegetables. However, since then, we've had very poor yield. Our soil is very sandy. What is the best way to enrich the soil so it will once again give us fresh organically grown veggies? Thank you!
Compost is key. This article should help as well: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/amending-sandy-soil.htm
Compost,compost,compost,Basically what "good dirt consist of.Anything&everything you can get your hands on,Coffee grounds,eggshells,banana peels,LOVE banana peels,leftovers,no meat products!!
I've just added lime to the raised beds in an attempt to neutralize the soil. I am also planning on sowing rye seeds as green manure and wondered how long after liming the soil I should wait before sowing rye seeds?
You can sow almost immediately. Grasses, rye included prefer a slightly alkaline soil. I found this article interesting:
http://www.hort.purdue.edu/newcrop/afcm/rye.html
I live in Arizona with very sandy soil. Someone said to add manure and sawdust to my soil. What do you think?
You can always use these to help improve the quality of your soil; however, make sure they are composted first. These articles should help you with that: https://www.gardeningknowhow.com/composting/ingredients/using-sawdust-in-your-compost-pile.htm, https://www.gardeningknowhow.com/composting/manures/the-benefits-of-manure-in-your-garden.htm Additionally, you may want to read this article with tips for improving sandy soil: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/amending-sandy-soil.htm
Can I use sodium bicarbonate to raise the pH of the soil?
These articles will help you with correcting your pH: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/lower-acid-soil.htm, https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/raise-acid-level-soil.htm
Can I put walnut wood chips in my garden or sawdust?
Yes, you can. I would recommend that if you do, just make sure to test your soil once a year to keep an eye on the nitrogen levels. Sometimes the decomposition process of wood chips of sawdust can leech nitrogen out of the soil, but mostly the benefits of adding a mulch of this kind outweigh the problems.
As a result of remodeling, I will have sheet rock (3/4 inch) to recycle. If I remove the paper and crush up the sheet rock, could it be used in place of pellitized gypsum on lawn and garden plots?
It is not recommended to use sheet rock in the garden due to the many other things used in the production of sheet rock. It could contain chemicals and additives that would not be healthy.