ag 2470 midterm 1 Introduction to Plant Agriculture Flashcards pt 1

Vocabulary practice flashcards covering plant agriculture history, anatomy, growth habits, soil moisture, and pest diagnostics.

Global Land Use for Food Production Chart

A breakdown from Our World in Data showing that $46\%$ of habitable land ($48\,\text{million}\,\text{km}^2$) is used for agriculture, with $77\%$ used for livestock and $23\%$ for crops.

Haber-Bosch Process

A chemical synthesis process commercialized in 1913 that enabled the large-scale production and agricultural application of inorganic nitrogen fertilizers.

Bordeaux Mixture

A copper sulfate and lime fungicide developed in the late 1800s that remains in global use today for crop disease management.

Lodging

The bending or breaking over of plant stems near ground level, which was significantly reduced in short-statured dwarf crops developed during the Green Revolution.

Pulses

Legume crops harvested exclusively for their dry seeds, characterized by high protein content.

Simple Fruits

Fruits that develop from a single or compound ovary with a single pistil in one flower.

Aggregate Fruits

Fruits that develop from several separate ovaries contained within a single flower.

Cover Crops

Crops planted during non-commercial growing windows to prevent soil erosion, retain nutrients, improve soil aggregation, and enhance soil health.

Primary Agriculture

Agricultural production activities carried out inside a farm, nursery, or greenhouse setting.

Tillers

Side shoots produced by grass plants that originate from the crown at or below the soil surface.

Stolons

Above-ground horizontal stems that extend from the main plant to form new leaf clusters, remaining dependent on the parent plant.

Determinate Growth

A plant growth pattern where vegetative growth completely stops once reproductive flowering begins.

Indeterminate Growth

A plant growth pattern where vegetative growth continues alongside flowering and fruit development.

Transpiration Pull

The physical tension created by water evaporation from leaf stomata that draws water upward from roots through xylem vessel networks.

Apical Meristem

Regions of active cell division located at shoot and root tips responsible for primary vertical extension growth.

Intercalary Meristem

Meristematic tissue located at node bases in monocots that allows rapid stem regrowth following grazing or mowing.

Imbibition

The rapid physical uptake of water by a dry seed, triggering swelling and activating metabolic enzymes for germination.

Auxin

A plant hormone involved in cell elongation, apical dominance, phototropism, geotropism, and adventitious root development.

Rhizosphere

The narrow soil region ($1\,\text{mm}$ to $3\,\text{mm}$ surrounding roots) directly influenced by root exudates and microflora.

Rainfed vs. Irrigated Yield Comparison Table

A table showing crop yield differences between rainfed and irrigated management from 2009 to 2013, demonstrating an average yield increase of $12.2\%$ from irrigation.

Daily Crop Water Depth Formula

The calculation converting a crop water use rate of $30\,\text{m}^3/\text{ha}$ per day into an equivalent water depth of $3\,\text{mm}$ ($\frac{30\,\text{m}^3}{10{,}000\,\text{m}^2} = 0.003\,\text{m} = 3\,\text{mm}$).

Table 1 (Irrigation Method and Frequency Data)

Experimental data from Sammis (1980) evaluating sprinkler, trickle, subsurface, and furrow irrigation under $-20\,\text{kPa}$ and $-60\,\text{kPa}$ soil matric potential thresholds.

Global Land Use for Food Production Chart

A breakdown from Our World in Data showing that $46\%$ of habitable land ($48\,\text{million}\,\text{km}^2$) is used for agriculture, with $77\%$ used for livestock and $23\%$ for crops.

Haber-Bosch Process

A chemical synthesis process commercialized in 1913 that enabled the large-scale production and agricultural application of inorganic nitrogen fertilizers.

Bordeaux Mixture

A copper sulfate and lime fungicide developed in the late 1800s that remains in global use today for crop disease management.

Lodging

The bending or breaking over of plant stems near ground level, which was significantly reduced in short-statured dwarf crops developed during the Green Revolution.

Pulses

Legume crops harvested exclusively for their dry seeds, characterized by high protein content.

Simple Fruits

Fruits that develop from a single or compound ovary with a single pistil in one flower.

Aggregate Fruits

Fruits that develop from several separate ovaries contained within a single flower.

Cover Crops

Crops planted during non-commercial growing windows to prevent soil erosion, retain nutrients, improve soil aggregation, and enhance soil health.

Primary Agriculture

Agricultural production activities carried out inside a farm, nursery, or greenhouse setting.

Tillers

Side shoots produced by grass plants that originate from the crown at or below the soil surface.

Rhizomes

Underground horizontal stems capable of producing new roots and shoots, allowing independent clonal survival if severed from the parent plant.

Stolons

Above-ground horizontal stems that extend from the main plant to form new leaf clusters, remaining dependent on the parent plant.

Determinate Growth

A plant growth pattern where vegetative growth completely stops once reproductive flowering begins.

Indeterminate Growth

A plant growth pattern where vegetative growth continues alongside flowering and fruit development.

Transpiration Pull

The physical tension created by water evaporation from leaf stomata that draws water upward from roots through xylem vessel networks.

Apical Meristem

Regions of active cell division located at shoot and root tips responsible for primary vertical extension growth.

Intercalary Meristem

Meristematic tissue located at node bases in monocots that allows rapid stem regrowth following grazing or mowing.

Imbibition

The rapid physical uptake of water by a dry seed, triggering swelling and activating metabolic enzymes for germination.

Auxin

A plant hormone involved in cell elongation, apical dominance, phototropism, geotropism, and adventitious root development.

Casparian Strip

A suberized hydrophobic band in root endodermal cell walls that blocks the apoplastic pathway, forcing solutes across plasma membranes.

Rhizosphere

The narrow soil region ($1\,\text{mm}$ to $3\,\text{mm}$ surrounding roots) directly influenced by root exudates and microflora.

Rainfed vs. Irrigated Yield Comparison Table

A table showing crop yield differences between rainfed and irrigated management from 2009 to 2013, demonstrating an average yield increase of $12.2\%$ from irrigation.

Daily Crop Water Depth Formula

The calculation converting a crop water use rate of $30\,\text{m}^3/\text{ha}$ per day into an equivalent water depth of $3\,\text{mm}$ ($\frac{30\,\text{m}^3}{10{,}000\,\text{m}^2} = 0.003\,\text{m} = 3\,\text{mm}$).

Table 1 (Irrigation Method and Frequency Data)

Experimental data from Sammis (1980) evaluating sprinkler, trickle, subsurface, and furrow irrigation under $-20\,\text{kPa}$ and $-60\,\text{kPa}$ soil matric potential thresholds.

Gibberellins

Plant hormones that stimulate cell division and stem elongation, break seed dormancy, and accelerate germination.

Cytokinins

Plant hormones synthesized mainly in roots that promote cell division, delay leaf senescence, and encourage lateral bud branching.

Ethylene

A gaseous plant hormone that promotes fruit ripening, leaf abscission, and cellular senescence.

Abscisic Acid (ABA)

A plant hormone that induces stomatal closure during drought stress and maintains seed dormancy.

Lateral Meristem

Meristematic tissue, including vascular and cork cambium, responsible for secondary growth and widening of stems and roots.

Axillary Meristem

Meristematic tissue located at the leaf axil above a node that initiates branching and flower development.

Taproot System

A root system featuring a prominent main central root that penetrates deeply into soil with smaller lateral branches, typical of dicots.

Fibrous Root System

A root system composed of numerous thin, similarly sized roots originating from stem bases after the radicle stops growing, typical of monocots.

Adventitious Roots

Roots that originate from non-root plant tissue, such as stems or leaves, providing structural support and facilitating vegetative propagation.

Apoplastic Pathway

The movement of water and dissolved solutes through non-living cell wall spaces and intercellular gaps without crossing plasma membranes.

Symplastic Pathway

The movement of water and mineral solutes directly from cell to cell through cytoplasm linked by plasmodesmata.

Root Cap

A protective cell structure shielding the root apical meristem that secretes mucilage for soil lubrication and senses gravity via amyloplasts.

Suberin

A waxy, hydrophobic compound embedded in the Casparian strip that halts apoplastic movement into the root stele.

Leghemoglobin

An iron-containing protein in legume root nodules that regulates oxygen concentration to safeguard nitrogenase enzymes.

Mycorrhizae

Mutualistic fungal associations with plant roots that increase nutrient and water uptake surface area.

Global Land Use for Food Production Chart

A breakdown from Our World in Data showing that $46\%$ of habitable land ($48\,\text{million}\,\text{km}^2$) is used for agriculture, with $77\%$ used for livestock and $23\%$ for crops.

Haber-Bosch Process

A chemical synthesis process commercialized in 1913 that enabled the large-scale production and agricultural application of inorganic nitrogen fertilizers.

Bordeaux Mixture

A copper sulfate and lime fungicide developed in the late 1800s that remains in global use today for crop disease management.

Lodging

The bending or breaking over of plant stems near ground level, which was significantly reduced in short-statured dwarf crops developed during the Green Revolution.

Pulses

Legume crops harvested exclusively for their dry seeds, characterized by high protein content.

Simple Fruits

Fruits that develop from a single or compound ovary with a single pistil in one flower.

Aggregate Fruits

Fruits that develop from several separate ovaries contained within a single flower.

Cover Crops

Crops planted during non-commercial growing windows to prevent soil erosion, retain nutrients, improve soil aggregation, and enhance soil health.

Primary Agriculture

Agricultural production activities carried out inside a farm, nursery, or greenhouse setting.

Tillers

Side shoots produced by grass plants that originate from the crown at or below the soil surface.

Stolons

Above-ground horizontal stems that extend from the main plant to form new leaf clusters, remaining dependent on the parent plant.

Determinate Growth

A plant growth pattern where vegetative growth completely stops once reproductive flowering begins.

Indeterminate Growth

A plant growth pattern where vegetative growth continues alongside flowering and fruit development.

Transpiration Pull

The physical tension created by water evaporation from leaf stomata that draws water upward from roots through xylem vessel networks.

Apical Meristem

Regions of active cell division located at shoot and root tips responsible for primary vertical extension growth.

Intercalary Meristem

Meristematic tissue located at node bases in monocots that allows rapid stem regrowth following grazing or mowing.

Imbibition

The rapid physical uptake of water by a dry seed, triggering swelling and activating metabolic enzymes for germination.

Auxin

A plant hormone involved in cell elongation, apical dominance, phototropism, geotropism, and adventitious root development.

Casparian Strip

A suberized hydrophobic band in root endodermal cell walls that blocks the apoplastic pathway, forcing solutes across plasma membranes.

Rhizosphere

The narrow soil region ($1\,\text{mm}$ to $3\,\text{mm}$ surrounding roots) directly influenced by root exudates and microflora.

Rainfed vs. Irrigated Yield Comparison Table

A table showing crop yield differences between rainfed and irrigated management from 2009 to 2013, demonstrating an average yield increase of $12.2\%$ from irrigation.

Daily Crop Water Depth Formula

The calculation converting a crop water use rate of $30\,\text{m}^3/\text{ha}$ per day into an equivalent water depth of $3\,\text{mm}$ ($\frac{30\,\text{m}^3}{10{,}000\,\text{m}^2} = 0.003\,\text{m} = 3\,\text{mm}$).

Table 1 (Irrigation Method and Frequency Data)

Experimental data from Sammis (1980) evaluating sprinkler, trickle, subsurface, and furrow irrigation under $-20\,\text{kPa}$ and $-60\,\text{kPa}$ soil matric potential thresholds.

Gibberellins

Plant hormones that stimulate cell division and stem elongation, break seed dormancy, and accelerate germination.

Cytokinins

Plant hormones synthesized mainly in roots that promote cell division, delay leaf senescence, and encourage lateral bud branching.

Ethylene

A gaseous plant hormone that promotes fruit ripening, leaf abscission, and cellular senescence.

Abscisic Acid (ABA)

A plant hormone that induces stomatal closure during drought stress and maintains seed dormancy.

Lateral Meristem

Meristematic tissue, including vascular and cork cambium, responsible for secondary growth and widening of stems and roots.

Axillary Meristem

Meristematic tissue located at the leaf axil above a node that initiates branching and flower development.

Taproot System

A root system featuring a prominent main central root that penetrates deeply into soil with smaller lateral branches, typical of dicots.

Fibrous Root System

A root system composed of numerous thin, similarly sized roots originating from stem bases after the radicle stops growing, typical of monocots.

Adventitious Roots

Roots that originate from non-root plant tissue, such as stems or leaves, providing structural support and facilitating vegetative propagation.

Apoplastic Pathway

The movement of water and dissolved solutes through non-living cell wall spaces and intercellular gaps without crossing plasma membranes.

Symplastic Pathway

The movement of water and mineral solutes directly from cell to cell through cytoplasm linked by plasmodesmata.

Root Cap

A protective cell structure shielding the root apical meristem that secretes mucilage for soil lubrication and senses gravity via amyloplasts.

Suberin

A waxy, hydrophobic compound embedded in the Casparian strip that halts apoplastic movement into the root stele.

Leghemoglobin

An iron-containing protein in legume root nodules that regulates oxygen concentration to safeguard nitrogenase enzymes.

Mycorrhizae

Mutualistic fungal associations with plant roots that increase nutrient and water uptake surface area.

Vascular Cylinder

The central core of root tissue inside the endodermis containing xylem and phloem, arranged in a central star shape in dicots or a ring around pith in monocots.