Question

Short notes on dispersal of seed

Answer 1

Explanation:

Seed Dispersal is an adaptive mechanism in all seed-bearing plants, participating in the movement or transport of seeds away from their parent plant to ensure the germination and survival of some of the seeds to adult plants. There are many vectors to transport the seed from one place to another.

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Answer 2

1. Plant drill: a mechanical tractor attachment that 'drills' the seed into the ground using the tractor's PTO. This has been around for more than a century in a variety of forms, and it works with nearly all field crops (corn, barley, wheat, soybean, canola, etc.). A hopper and gravity working together with the movement of the wheel turn the mechanism, taking a seed out of the hopper and placing it into the ground below at a predetermined uniform depth and spacing. The mechanism rolls along the ground on a wheeled base and drills a seed into the cultivated soil from above.
2. Planter: The same as a seed drill, but more contemporary because it updates the operator via a digital interface. It frequently features a twin hopper for adding salt fertz during drilling. These are sometimes referred to as mechanical planters or sowers, with output widths of 6 meters or greater, and also use the PTO for power.
3. Seed broadcaster/ Distributor: It is frequently used for grass crops and may be hand-held or mounted to a compact tractor. A rotating wheel that rotates and sprays or flicks the seeds into the ground in a 90 to 180 degree coverage area receives food from a hopper that feeds downward. The seed is sprayed outwardly in a process known as broadcasting, much like how a signal is transmitted. It needs a lot of seed and can't be used for all crops because it isn't drilled into the ground.
4. Single row planter: This is a hand-held device that may be created from a section of tube with a bottom wheel and either a little moldboard plow, only a single disc harrow connected, or in extremely basic configurations, totally without. One seed is inserted into the tube of the single row drill at a time as the farmer moves along the farmed row. A wheel that opens the hopper on a single row planter with more modern technology will release seeds evenly. This may be purchased on Amazon and is frequently used by gardeners to plant lettuce patches. It resembles a little wheelbarrow-shaped gadget with a wheel at the front and drops seeds as you move it.  It’s very useful for accurately plotting lettuce crops in market gardens and quiet popular with y0utubers gardeners. You can make your own easily. It’s like a miniature version of the seed drill.