Home What's New Message Board
BigPumpkins.com
Select Destination Site Search
Grower Diaries
 
Entry Date Nick Name Location
Thursday, June 20, 2024 Matt D. Connecticut

Entry 75 of 116  
Grower Diary Menu
  Back to Previous Page
Show Full 2024 Diary
List Other Grower's Diaries
Submit to Your Own Diary
Maximum Target Levels

This shows the upper target levels when it comes to mixing fertilizer for the pumpkin plant.

Conductivity: Most growers are using EC (electrical conductivity) as this is a universal unit the only issue is that it is not as exact as ppm (parts per million) and growers can more easily over shoot when using EC as it takes greater conductivity to move this value. Ppm moves easier so it makes slight changes noticeable. It is also important to know this monitor uses the ppm based on the EC*700 and if you want the TDS conversion it is ppm*500.
In short this means that 450ppm = 0.6 EC

Temperature: There is not much control over this, but 74F (23C) is a good root zone temperature to allow for efficient absorption

pH: Goal is to have this in the 6.5-7.5 range. While 7.5 is on the high side, since the soil tends to be acidic having a slightly basic solution will help ensure the soil level is not driven even further acidic during the season.

EC to PPM Conversion Chart: https://www.perfectgrower.com/knowledge/knowledge-base/ec-to-ppm-conversion-chart/

While meters do not measure only nitrogen, this is an important nutrient to manage and according to this study on tomatoes… “Nitrogen fertilizer plays a pivotal role in influencing the growth and development of tomato plants.” And they also recommend “growers should consider using nitrate nitrogen (NN) and urea nitrogen (UN) to reduce ammonium nitrogen (AN) application in tomato fertilization.

Effects of Different Forms and Proportions of Nitrogen on the Growth, Photosynthetic Characteristics, and Carbon and Nitrogen Metabolism in Tomato :
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748299/pdf/plants-12-04175.pdf
 



Top of Page

Questions or comments? Send mail to Ken AT bigpumpkins.com.
Copyright © 1999-2024 BigPumpkins.com. All rights reserved.