Plant Growth Factors and Development Stages in Agriculture

What climatic factors affect plant growth?

Light, temperature, and air flow/humidity.

What is the significance of Temperature Sum (GDD) in plant development?

It estimates development and quality of plants.

What are the main groups of photosynthesis in plants?

C3, C4, and CAM plants.

Which types of plants are most commonly agricultural?

C3 and C4 plants.

What challenges exist in regulating temperature on arable land?

Temperature is hard to regulate, while water can be managed.

What is the impact of high nutrient application rates on plant growth?

It can inhibit growth and increase climatic impact.

What are the stages of plant growth from germination to senescence?

0: Germination, 1: Leaf development, 2: Tillering, 3: Stem elongation, 4: Harvestable parts, 5: Inflorescence, 6: Flowering, 7: Fruit development, 8: Ripening, 9: Senescence.

How does photoperiod affect cereal plants?

Long days often speed up heading in cereals.

What is vernalization in plants?

A period of cold that some cultivars need before flowering.

What changes occur in grasses as they progress through growth stages?

Crude protein (CP) declines, neutral detergent fiber (NDF) increases, and water-soluble carbohydrates (WSC) can rise toward heading.

What trends are observed in cereals during grain fill?

Starch accumulates while crude protein percentage tends to decline.

What factors influence sprouting in plants?

Temperature, humidity, ratio between red and far-red light, wind, and rain.

What is the effect of low nutrients, water, and temperature on vegetative growth?

It leads to lower growth in plants.

What is the importance of seedbed preparation in plant growth?

It is crucial for successful seeding and harvesting.

How can the optimal climatic range for a plant species be altered?

Through breeding to adapt to different conditions.

What is the relationship between fertilization levels and fiber content in grasses?

Higher fertilization levels result in higher yields but lower fiber content.

What is the role of wind in plant growth?

Wind is difficult to regulate and can impact growth conditions.

What are the consequences of insufficiently dry soil in new production?

It can hinder the establishment of new plant production.