
David Holden
Owner of Holden Research and Consulting, an independent agricultural field research firm in Camarillo, California, with 40+ years as a pest control advisor and crop consultant.
3
APPEARANCES
3
PODCASTS
012
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Oct 6, 2026
Which Potash Fertilizer Fits Your Fields?
16:28
16:46
17:01
17:08
27:39

Alan BlaylockHOST
How does rate play into this equation? Are there specific concerns, specific situations where the grower may need to make adjustments in rate and/or timing of these applications to reduce specific effects of some of these anions?

David HoldenGUEST
We grow a lot of vegetative crops here, but my concern is more for flowering crops and any crop that bioaccumulates carbohydrates.

David HoldenGUEST
Maybe it's simplistic, but I think nitrogen build a plant, phosphorus enhance flowering, potassium finish a crop.

David HoldenGUEST
I think our rate, our timings need to be better set towards not the end of the crop, but mid-crop to start supplying potassium for carbohydrate movement.
10 MINS LATER

Alan BlaylockHOST
Just to kinda summarize and pull it together, what basic guidelines would you leave with producers on how to pick the source that may be best for their environment?
Which Potash Fertilizer Fits Your Fields?
16:28
16:46
17:01
17:08
27:16

Alan BlaylockHOST
How does rate play into this equation? Are there specific concerns, specific situations where the grower may need to make adjustments in rate and/or timing of these applications to reduce specific effects of some of these anions?

David HoldenGUEST
We grow a lot of vegetative crops here, but my concern is more for flowering crops and any crop that bioaccumulates carbohydrates.

David HoldenGUEST
Maybe it's simplistic, but I think nitrogen build a plant, phosphorus enhance flowering, potassium finish a crop.

David HoldenGUEST
I think our rate, our timings need to be better set towards not the end of the crop, but mid-crop to start supplying potassium for carbohydrate movement.
10 MINS LATER

Alan BlaylockHOST
As you think about these questions, are there some basic guidelines you would like to leave the growers with in terms of basic guidelines for selecting their potassium source, which sources are... obviously, this is a longer discussion, but which sources may be most suitable for certain things and particular watch-outs, as it were, that we've mentioned? Just to kinda summarize and pull it together, what basic guidelines would you leave with producers on how to pick the source that may be best for their environment?
Teamwork and Innovation Drive California Strawberry Success
13:03
13:18
13:26
15:21

David HoldenGUEST
Well, Proverbs 27:17 says, "As iron sharpens iron, so one man sharpens another." And so I love this event because I get to see, uh, friends, people I've worked with over the years, and, uh, we talk about new things and old things.

David HoldenGUEST
And, uh, even though I'm a little later in life, uh, I'm not one of those old dogs that's not learning new tricks.

David HoldenGUEST
And I also like to have a critical eye and say, "Well, is this for real or not?" And it just helps me to stay in touch and helps me with my consulting business today.

Jim MorrisHOST
How important is this for you? It's, it seems like it's more than a 9:00 to 5:00 from my observation.