Growing soya beans

Can you give me instructions for growing soya beans to maturity in UK?

Producing extracts from tomato plants

I believe that extracts from tomato plants affect the germination of cress seeds. How can extracts from tomato plants be produced?

Planting depth and seedling emergence

Does how deep you plant seeds affect how long it takes them to sprout?

How long can seeds live?

How long can seeds live?

Composting organic matter and collecting biogas

We are hoping to compost organic matter in a plastic bottle and collect biogas in a balloon over 10 days. Is this a safe experiment to do in a school environment?

Further ideas with leaf discs

The leaf disc project has started again with my year 9 and 10 boys (age 14 - 15). One boy suggested growing clover under different regimes, using the SAPS method to assess photosynthetic efficiency. Any suggestions?

Sun and shade plants

What is the physical difference between plants that grow in the direct sunlight and those that grow in the shade?

The effects of nitrates on plant growth

Is there any soluble nitrate which does not promote plant growth (especially lupins)? I am trying to establish if nitrate concentration has any effect on lupin growth, especially as they are leguminous plants.

Heavy metal chlorides and cress seedlings

What are the effects of different concentrations of a heavy metal chloride on the growth of Cress seedlings?

Phosphorus and the effect of mitosis in root tips

How do phosphate ions in nutrient solutions affect mitosis in root tips?

ABA and seed germination

What range of concentrations of ABA will affect the percentage germination of cress or mustard seeds?

The effects of nitrate on plant growth

How does excess amounts of nitrate affect the growth of a plant and why is this so?

Fertilisers and plant growth

What chemicals/fertilizers work best on the growth of a plant? (from a 14 yr old)

Onion epidermal cells

I plan to investigate the variation of solute potential in onion epidermal cells as distance from bulb surface varies. Do you have any tips?

Rooting gels and powders

What is the active ingredient in rooting gels and powders?

Partial permeability of cell membranes and lead

How can I measure the lowest concentration of lead ions that causes cell membranes to lose their partial permeability?

Factors that affect the growth of plants

Does Mg deficiency, Ca deficiency or Wind affect the growth in height of plants?

Safety notes - sodium chlorate weedkiller

Can you tell me about dermal absorption of sodium chlorate weedkiller?

The effects of soil type on plant growth

What are the effects of different soils (eg clay, potting mix, peat, sand, garden soil etc) on plant growth?

Lead in lead mining spoil heaps

What type of lead is found to pollute the ground in lead mining spoil heaps? What concentration is this tyoe of lead founding normal soil and concentration in the spoil soil?