GARDENPlants and seeds

Can anyone help with APES Hw?!?

Salt Tolerance for Radish Seed Germination?
thats the title of the worksheet. I don’t have time to explain everything here right now, but if anyone recognizes it, or can find it on the internet, could you please please help me? I really don’t get it at all. Neither do my parents.

Here’s the Facebook APES soil radish lab group:

http://www.facebook.com/group.php?gid=7317533121#!/group.php?gid=7317533121&v=wall

and here is the radish lab itself:

http://www.kwanga.net/apesnotes/salinization-lab.pdf

Catalyst Learning is just a company that sells your APES book. That link takes you to the publisher’s site but there’s no online book link there at all.

as for your lab, all soils contain some water-soluble salts. An accumulation of these is called soil salinity. Increased salts cause an osmotic effect, holding water in the soil with greater efficiency. So the soil must be kept wetter to supply the same amount of plant-available water as would be present without those salts.

Since these salts are often found as ions, electrical conductivity in the soil also increases, as does the number of toxic side effects on seeds. Salt-sensitive plants are more affected by these salts than salt-tolerant ones. One example of salt tolerance or sensitivity is germination. Tolerant beets can germinate more easily in high-salt soil than more salt-sensitive corn, for example.

Radishes are moderately salt-sensitive, as are many vegetables.

Reference: http://ces.uwyo.edu/PUBS/WY988.PDF

hope that helps!

=D

Time-lapse of Radishes Growing, Center for Ecoliteracy

Quantities of seed for given lengths of drill ; Experiments in hybridizing ; Notes on radishes ; Notes on germination ; Effects of latitude on season … (Bulletin / Agricultural College of Michigan) …