Agricultural Science

Definition and Meanings of Agricultural Terms (P and Q)

len Alfred Ajibola - Sat, 22nd June, 2019 @ 3:18 PM

Topics in Agricultural Science

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Academic Questions in Agricultural Science

Please click here to see all Questions and Answers

The ideal pH for the optimum growth of most agricultural crop is between _____.

  • A. 1 – 3.5

  • B. 4 – 5.5

  • C. 6 – 7.5

  • D. 8 – 9.5

  • E. 10 – 11.5

  • F. 12 – 13.5

People who go about their lives by raising and herding livestock such as cattle, sheep and goats are said to practice _____.

  • A. Pastoralism

  • B. Pasturalism

  • C. Herding

  • D. Herdsmen

  • E. Animalism

  • F. Anime Farming

The act of giving birth in pigs is called _____.

  • A. Calving

  • B. Piggery

  • C. Kidding

  • D. Farrowing

  • E. Calfing

  • F. Pigging

Which of the following is not a vegetable?

  • A. Cashew

  • B. Cocumber

  • C. Tomatoes

  • D. Carrot

  • E. Squash

  • F. Eggplant

All plants are crops.

  • A. True

  • B. False

In agriculture, macronutrients are essential nutrients required by plants. Which of the following is not a macronutrient?

  • A. Zinc

  • B. Sulphur

  • C. Calcium

  • D. Phosphorus

  • E. Potassium

  • F. Magnesium

Which of the following is false concerning micronutrients?

  • A. They are non-essential nutrients

  • B. They are required by plants in minute quantities

  • C. Iron is a micronutrient

  • D. Chlorine is a micronutrient

  • E. Copper is a micronutrient

  • F. Boron is a micronutrient

_____ is a term that describes the biological, chemical and cultural control tactics employed to make pest management economical, environmentally friendly and socially acceptable.

  • A. Integrated Pest Management

  • B. Integral Pest Management

  • C. International Pest Management

  • D. Inclusive Pest Management

  • E. Imbibed Pest Management

  • F. Inclusion Pest Management



Agricultural Terms:

This is a continuation of the agricultural terms and definitions for letters 'P' and 'Q'.

You can read on agricultural terms for letters P and Q part 1 here

 

  • Plant Litter

This is the accumulation of plant’s leaves, twigs, bark, stem, branches, fruits, seeds, flowers and other plant parts on the surface of the soil.

 

  • Plantations

This is a very large area of agricultural land on which one type of crop may be established through planting.

Examples of plantations are cotton plantations, tobacco plantation, sugar cane plantations and so on.

 

  • Plantlets

These are small plants or young plants that are grown through vegetative propagation from the parent plant. Understand that vegetative propagation is a form of asexual reproduction in plants.

Please read on vegetative propagation here.

 

  • Plantibodies

These are recombinant antibodies that are produced from genetically modified crops.

Please read on immunization here.

 

  • Plasmolysis

This is the shrinking of a living plant cell, animal cell or bacteria cell as a result of water loss from the cell's cytoplasm to its environment; due to an outward osmotic water flow.

 

  • Plus Trees

These are trees in which their outward appearance are much bigger when compared to an average tree of the same species grown on a similar area of land.

Some plus trees have shown to be pest and disease resistant.

 

  • Pollen (Pollen Grains)

This is the male germ cell or gametophytes (or sex cell) in plants.

Pollen grains are present in the anther of a flower.

 

  • Pollen Rain

This is the fall of large amount of pollen grains and spores on a particular area.

 

  • Pollination

Pollination is the transfer of pollen (male gametes) from the anther of a flower to the stigma of a flower.

Pollination is of two types. These are:

  1. Self Pollination: This is the transfer of pollen grain from the anther of a flower to the stigma of the same flower (or to the stigma of another flower on the same plant).
  2. Cross Pollination: This is the transfer of pollen grain from the anther of a flower to the stigma of another flower on a different plant. Cross pollination may be brought about by wind, water and insects.

Please read on agricultural terms and definitions, (letter A) here

 

  • Pomology

This is a branch of botany that deals with the science or study of growing and cultivating fruit.

 

  • Postharvest Food Safety

This is the process of ensuring that food products from farmland are fit for human consumption.

 

  • Postharvest Treatment

Postharvest treatment include various processes like disease control, ripening initiation, preservation techniques, packing and grading of harvested crop in order to make them fresh for marketing and processing.

You can read on problems of agriculture in Nigeria here.

 

  • Poult

A poult is a young turkey of either sex and usually not more than two months of age.

 

  • Poultry

Poultry consist of domestic birds raised for meat and eggs.

 

  • Precooling

This is the process in which large quantities of fruits or vegetables are rapidly cooled prior to loading for shipment.

 

  • Productive Soil

This is a soil in which the chemical, physical, and biological conditions are ideal for the economic production of specific crops in a given area.

Please read on agricultural land and its uses here.

 

  • Primary Succession

This is the initial and natural development of the vegetation (usually plants or lichens) on a bare or barren area.

The term 'lichen' refers to a symbiotic association between algae and fungi.

 

  • Pullet

A pullet is a female chicken less than 1 year old.

 

  • Q fever

This is an acute disease caused from infected dust and passed into cattle, sheep, goats and domestic animals.

The bacteria Coxiella burnetti present in dust are responsible for Q fever in domestic animals.

You can read on micro-organism causing diseases here

Please read on agricultural terms and definitions, letters I - O here

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Amazing facts in Agricultural Science

Cows technically have one stomach, not four. However, a cow's stomach has four compartments. These are: rumen, reticulum, omasum and abomasum

Peanuts are legumes and not nuts

Although plants neither see nor hear, they can recognize their siblings and even give them preferential treatments

Squirrels do plant more trees (through their actions) than an average human in their lifetime. They often hide their acorns and nuts underground and forget about them

Cows have got the ability to walk up stairs, but not down stairs

A group of cows is called a team, drove or herd.

People just prefer to call them herd


Notable points in Agricultural Science

Below are characteristics of gymnosperms:

  1. Their seeds have cones that protect them.

  2. Sepals and petals aren't present in their cones.

  3. Stigma and style are absent.

  4. They do not produce fruits. Only seeds are formed.

  5. Companion cells are absent.

  6. Sporophyll form the cones.

  7. Anther and filament are absent.

  8. The ovules are not present in the ovary.

  9. Gymnosperms do not possess flowers.

  10. Please read on the anatomical differences between gymnosperms and angiosperms here

The flower is the reproductive organ in plants' sexual reproduction. In order to achieve a successful sexual propagation or reproduction in plants, the floral parts of the flower are utilized.

The floral parts of a flower consists of the followings:

  1. Sepals

  2. Petals

  3. Stamen

  4. Carpel

The stamen is male portion of a plant. It consists of the anther and filament.

The carpel (or pistil) is the female portion of the plant. It consists of the stigma, style and ovary.

Please read more on plants' sexual reproduction here

An organism will be considered a pest if it does one of the followings:

  • Attack crops and eat its seeds, roots, stem, leaves and flowers. Examples are locust and grasshoppers.

  • Cause damage to stored food, fruits or other agricultural produce. Some may even urinate or deaficate on these products. Examples are rodents, cockroaches and mice.

  • Attack and kill farm animals like goats, sheep and cattle. Examples are foxes, wild cats and snakes.

  • Act as disease vectors. A vector is an organism that carries parasite and other disease causing organisms, without being affected; but when they introduce the parasites into their host, such host becomes infected with disease. Examples of vectors are rodents and mosquitoes.

    Please read more on vectors of diseases here.

Below are the classification of crops based on their uses:

  • Oil crops

  • Vegetable crops

  • Latex crops

  • Drug and Medicinal crops

  • Beverage crops

  • Fibre crops

  • Fruit crops

  • Root and Tubers

  • Legumes

  • Spices

  • Cereals

All crops are plants but not all plants are crops. Below are some instances:

  • Weeds are considered as plants, not crops.

  • Parasitic plants are not necessarily crops. Examples of parasitic plants include mistletoe, corpse flower and striga.

  • Carnivorous or insectivorous plants are not necessarily crops. Examples are sundew, venus flytrap and pitcher plant. The image below shows a carnivorous plant (venus flytrap).

Venus flytrap - Len Academy

 

Meanwhile, always understand that all crops are plants, and they are grown for food, money or something beneficial.

Please read on plants versus crops here