Salinty Effects on Tomato Plant Growth

Shari Fischer | year 11 biology | October 19, 2015

Shari Fischer | year 11 biology | October 19, 2015

The effect of different salinity concentrations on the growth of tomato plants

The effect of different salinity concentrations on the growth of tomato plants

PART A

aim and hypothesis

Aim: The aim of this experiment is to observe whether different concentrations of salt will negatively affect plant growth.

Hypothesis: It is hypothesized that when different levels of salt is put in the pots the tomatoes will either wither or not take any affect at all depending on the sunlight direction and temperature.

method and materials

Materials:

* 18x tomato plants

* 4x 0.76 L glasses with control and salt concentrations (0.1g, 0.2g. 0.3g)

* 1x Pen

* 1x Notepad

* 27x Labels

Method

1. Separate the tomato plants into 6 different groups

2. Name them each with the set concentration

3. Make up concentrations in a glass that is 0.76L and label them 0.1, 0.2, 0.3

4. Label each plant with the name e.g. P1, P2, P3 etc.

5. Record height and leaf count

6. Record again the next day and water with 50ml of the different concentrations

7. Repeat for the next 10 days

controlled and changed variables

Controlled variables: Changed Variables

* Type of soil - Salt concentration in the water fed to plants

* Time when watered - Areas where the plants grew

Introduction

Plant physiology is a sub discipline of botany concerned with the functioning, or physiology, of plants. In order to live and grow, plants need four basic elements: air, water, nutrients, and sunlight. Air During the process of photosynthesis, plants use carbon dioxide to make food and release oxygen, as a result. Water Roots carry water and nutrients to the plant. Water is also used during the process of photosynthesis by helping to release energy from stored food in the plant. Water pressure also helps to...