Why do crop plants have less protection from pests that do wild plants?

Why do crop plants have less protection from pests that do wild plants?

Wild plants often have more protection from pests than do crop plants. Wild plants grow throughout a landscape, so pests have a harder time finding and feeding on a specific plant. Crop plants, however, are usually grown together in large fields, which provide pests with a one-stop source of food.

What did the Green Revolution depended on?

The Green Revolution technology employed the use of new high-yielding varieties of seeds as well as chemical fertilizers. The problem with indigenous seeds was not the fact that they were not high-yielding, rather it was their inability to stand up to heavy applications of chemicals.

What are some similarities and differences between monoculture and polyculture agriculture quizlet?

A monoculture is where one crop and specifically one strain of one crop is grown in an area. A polyculture is where multiple crops and/or multiple strains of a crop are grown in the same area.

How much of the seafood consumed in the world is produced through aquaculture?

Globally, aquaculture supplies more than 50 percent of all seafood produced for human consumption—and that percentage will continue to rise.

Why do monoculture farms have more issues with disease and pests?

Because monocultures are acres of the same plant, the entire monoculture attracts the same types of pests. Because there is no biodiversity to mitigate these effects, and because the pests can so easily obtain food and multiply, the pests can infest an entire monoculture.

Why Green Revolution is important?

The green revolution led to high productivity of crops through adapted measures, such as (1) increased area under farming, (2) double-cropping, which includes planting two crops rather than one, annually, (3) adoption of HYV of seeds, (4) highly increased use of inorganic fertilizers and pesticides, (5) improved …

Why Green Revolution is needed?

The green revolution thereby was intended to overcome food shortages in India by increasing the yields of agricultural produce with the help of better irrigation systems, pesticides, fertilizers, agricultural machinery, etc but also principally with the help of crop intensification focused on more resistant high- …

What is the benefit of crop rotation quizlet?

Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.

What are some of the benefits of crop rotation quizlet?

Crop rotation is a planned system of growing different crops in succession on the same piece of land. Rotation provides some of the benefits of polycultures: increased biodiversity, yield stability and more efficient and complete use of resources, but usually only over time – not within a growing season.

Why would planting large areas with a single crop?

Planting large areas with one type of crop plant gives pests of that crop a one-stop food bonanza. Single crop systems also do not provide refuges for the predators that otherwise keep pest populations under control.

How many fish are killed each year?

The number of individual wild fish killed each year is estimated as 0.97-2.74 trillion (based on FAO tonnage statistics combined with estimated mean weights of fish species). The FAO numbers do not include illegal, unreported and unregulated fishing, nor discarded fish.

Why are some plants found in one area but not another?

These adaptations might make it very difficult for the plant to survive in a different place. This explains why certain plants are found in one area, but not in another. For example, you wouldn’t see a cactus living in the Arctic. Nor would you see lots of really tall trees living in grasslands.

What are the advantages of adaptations in plants?

They allow an organism to reduce competition for space and nutrients, reduce predation and increase reproduction. There are however, several factors that can limit these adaptations: availability of water, light, predation and temperature (fig 1) (UNM Department of Biology).

What are the factors that limit plant adaptations in the desert?

There are however, several factors that can limit these adaptations: availability of water, light, predation and temperature (fig 1) (UNM Department of Biology). Desert plants look very different from plants that live near the ocean or in the mountains.

What characteristics of the environment influence a plant’s ability to grow?

The characteristics of the environment that influence a plant success to grow healthy There are five main types of nutrients that plants use are: Nitrogen, Phosphorous, Potassium, Calcium, and Magnesium. Nutrients are substances that provide energy and materials for plants to grow.