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-1
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0answers
13 views

Does anyone have some references on using metal halide lamps in a greenhouse? [migrated]

I am looking for some references to use Metal Halide Lamp in green house. Is there some one can recommend me the specification (also the function), brand and the supplier (if possible)?. Many thanks ...
1
vote
1answer
41 views

How does inbreeding depression cause infertility?

My textbook states that repetitive self-pollination in the plants cause inbreeding depression which causes infertility thus plants develop techniques called outbreeding devices to encourage ...
1
vote
1answer
38 views

Do you know of ways that help a plant to produce more flowers?

In Crocus sativus, or saffron crocus, the most commercially important part is stigma of flowers. Each plant produces one flower (so there is more than one plant in this picture) and each flower has ...
10
votes
3answers
638 views

Why are fruits so large compared to their seeds?

Why do many plants produce such large fruits(apples and strawberries,for example) if those contain only relatively small seeds?
1
vote
0answers
96 views

Human vs animal feces as fertilizer [closed]

Why human feces cannot, or at least should not be used as fertilizer for plants, while farm animals waste are consider very good and natural.
1
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0answers
15 views

Can different strains of Rhizobium share an infection thread or symbiosome?

Rhizobium infection can be triggered at root hairs of legumes, creating infection threads. Can these infections threads be colonized by more than one type of Rhizobium (e.g. Fixing and non-fixing)? ...
2
votes
0answers
27 views

Which agricultural crops attract rodents?

Are there any data on rodent populations per acre of different types of agricultural crops?
2
votes
0answers
45 views

Among xerophyte plants, which one grow faster and consume water the least? [closed]

In an effort to select for the most suitable plants to possibly colonise desert and stop its expansion, what would be the xerophyte plants that grow the faster and expand on surface, while using the ...
3
votes
2answers
39 views

recolonize earth desert with plants : which plants first?

if willing to recolonize earth desert , let's say sahara or any dehydrated and sterile land, without intensive human intervention, what would be the first plants / algae / fungi /bacteria to grow ? ...
2
votes
0answers
50 views

What fraction of biomass is cultivated by humans? Have we increased the number of large animals?

What fraction of "large animals" are domesticated by humans, compared to those who are wild? I mean cows, pigs, sheep, horses, dogs, cats in relation to comparable wild animals. Different measurements ...
2
votes
1answer
41 views

Why do oranges in the US have a small separate part?

Why do oranges in the US have a small separate detachable part at the tip which is separate from the other pods? It looks like a tiny orange itself and has a long fiber attached to it.
2
votes
0answers
70 views

What are the ingredients of Pheromone Trap using for controlling Fruit flies of cucumber?

Pheromone Traps are used for fruit fly control. But I have no idea which ingredients or chemicals are used for preparing Pheromone trap
0
votes
1answer
27 views

Utilising Mycorrhizal Association

We know that mycorrhizal association helps the plant to absorb nutrients. Why can't this association be exploited in agriculture ? Can't we add spores of the specific fungi to specific plant and ...