google.com, pub-6546753431946252, DIRECT, f08c47fec0942fa0
top of page
Search

Advanced Plant Physiology: Foundation of Plant’s Requirement for Growth and Development


Lecture on: 25 March 2026


Welcome to this advanced lecture on the foundation of plant growth and development. This session explores the essential formula for high-yield agriculture: ALWNG (Allowing).The ALWNG acronym represents the five core requirements that "allow" plants to grow healthily, develop normally, and maximize harvest potential:

  • Air Light

  • Water

  • Nutrient

  • Growth Manner


This lecture focuses specifically on the critical interplay between Light and Air, with a deep dive into Carbon Dioxide (CO2) enrichment and photosynthetic efficiency.


1 Air: More Than Just Oxygen

We break down the atmospheric requirements for plants, focusing on:

  • CO2 Concentration: Understanding how CO2 levels drive the Calvin Cycle and sugar production.

  • O2 Concentration: The role of oxygen in cellular respiration and the delicate balance between aerobic and anaerobic soil conditions.

  • Humidity & Temperature: How relative humidity (RH) and vapor pressure impact leaf health, transpiration, and the prevention of issues like shriveled buds or grey mould.


2. Light: The Four Dimensions Mastering light for advanced plant science requires understanding more than just brightness. We discuss:

  • Light Quality (Spectrum): The importance of specific wavelengths (400–700 nm) for photosynthesis and the use of specialized LED spectrums.

  • Light Quantity (Intensity): Measuring Photosynthetic Photon Flux Density (PPFD) to ensure the canopy receives the optimal count of photons per second.

  • Light Duration (Photoperiod): Managing critical night lengths for short-day and long-day plants to control flowering.

  • Light Angle (Direction): How the angle of insolation affects light interception and shadowing within the canopy.


Keywords: Plant Growth Requirements , ALWNG Formula , UPM Agriculture Lecture , Photosynthesis vs Respiration, Relative Humidity for Plants , Light Spectrum for Growth


Location:

Faculty of Agriculture, Universiti Putra Malaysia

Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor

2.983567621706455, 101.73466120334834


Comments

bottom of page