Does Saltwater Effect Plants?

I'm doing a science project at school testing the affect of adding salt to plants. Cup "A" was the control with no salt, Cup "B" had 1 teaspoon of salt, cup "C" had 2 teaspoons and Cup "D" had 3 teaspoons. All plant started at a height between 27-28cms. Within a day, cup "D" was already showing the results.
It has been 2 weeks since I started this experiment, Cup "B", "C", and "D" are all dead!
This is because Number 1. The salt sucked up all the water and 2. The roots sucked up the salt therefor the slat got into the stem of the plant and killed it!
By Bec

The salt is in the soil which then sucks the water out of the plant through a process called osmosis. It is not just salt water that affects plant growth. Land plants suck oxygen in through there roots if there is to much fresh or salt water in the soil the plant could suffocate.  Which means the plant could die of thirst in 5in of salt water. There are some plants such as mangroves who can deal with high concentrations of salt water.

I did this for a science fair project and took two dieffenbachia plants, 16in, and watered one with water and the other with salt water each day. After 2 days I noticed there was a change in height for the plant I watered saltwater with. It had lost 3 in. The other plant didn't lose any inches.

Hope I Helped. A little.

Plasmolysis will occur. The plants leafs will turn brown and wither then eventually die if the tonicity is not corrected.

Salt water can kill plants because when the salt is absorbed into the plants it also gets absorbed into its tissue. Salt is not the problem because plants still need a little salt to survive, too much salt is the problem. When too much salt gets into the tissue it disrupts the plants’ processes, which is making its food so it can survive and grow. When there is a large amount of salt outside of the plant the water moves outside of the plant trying to neutralize the amount because of this the plant ends up dying of thirst.

You would kill your plants

Saltwater does effect plants because it might kill them or some might live and some may not.

It would confuse your plants circulation and kill it because it would  damage the roots

Saltwater surely affects the growth of plants. Saltwater alters the osmotic potential of the plants and due to this osmosis or active transport takes place. At times, saltwater proves to be beneficial to the pants but most of the time. It is highly harmful for most or all of the plants and herbs.

I don't know yet.I think thee salt water would  work

Can salt water effect on plants.

The plant will not grow.

Yes I even did an experiment on it.