Original video: https://youtu.be/5MTIAwyEUVQ Lecture on: 1 December 2025 This lecture is a comprehensive guide to Crop Nutrition and Mineral Nutrient Absorption, foundational topics for Crop Physiology (AGR3301). We cover the classification of nutrients, the criteria for essentiality, and the complex process of nutrient uptake by plant roots. Essential Plant Nutrients We begin by defining nutrients and establishing the criteria for a chemical element to be considered essentia

Original video: https://youtu.be/SrZIgGdIpHo Lecture on: 24 November 2025 Part 1: https://youtu.be/3mblOhwxerU Part 2: https://youtu.be/4LKaeyVyV2Q Notes can be downloaded here: This video segment of the Crop Physiology (AGR3301) lecture focuses on the crucial group of Growth Inhibitors—Abscisic Acid (ABA) and Ethylene—and their roles in stress signaling, development, and senescence. ABA is a general plant growth inhibitor and is considered the stress hormone due to its pivot

Original video: https://youtu.be/4LKaeyVyV2Q Lecture on: 17 November 2025 Part 1: https://youtu.be/3mblOhwxerU This lecture, part of the Crop Physiology (AGR3301) course, provides a comprehensive overview of Plant Growth Regulators (PGRs), also known as Phytohormones. These are natural chemical messengers that control a plant's growth, development, and movement at minute concentrations. PGR Classification Plant hormones are broadly classified into two groups based on their pr

Original video: https://youtu.be/3mblOhwxerU Lecture on: 10 November 2025 This lecture, part of the Crop Physiology (AGR3301) course, provides a comprehensive overview of Plant Growth Regulators (PGRs), also known as Phytohormones. These are natural chemical messengers that control a plant's growth, development, and movement at minute concentrations. Keywords: Phytohormones, Plant Growth Regulators, Auxin, Gibberellin, Cytokinin, Abscisic Acid, Ethylene, Plant Hormones, Apic

Original video: https://youtu.be/v-xTdfeac20 Lecture on: 3 November 2025 This lecture, part of the Crop Physiology (AGR3301) course, provides a deep dive into the properties of water, the movement of water within the plant (transport), and the fundamental concept of Water Potential. Water Properties and Transport. We begin by reviewing the unique characteristics of water, focusing on its role in plant function: 1. Polarity and Bonding: Water's polarity leads to hydrogen bondi