# Grade 11 Agricultural Sciences Notes > CAPS-aligned Grade 11 Agricultural Sciences revision notes, broken down topic by topic with worked examples, diagrams, and key definitions. - Page: https://www.hlayiso.com/grade-11/agricultural-sciences/notes Breadcrumbs: [Home](https://www.hlayiso.com/) › [Grade 11](https://www.hlayiso.com/grade-11) › [Agricultural Sciences](https://www.hlayiso.com/grade-11/agricultural-sciences) › [Notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes) ## Topics Each section has a free preview; the full notes are in the free Hlayiso account. ### Basic agricultural chemistry - [Basic agricultural chemistry notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/basic-agricultural-chemistry) - [Atomic structure, elements and the periodic table](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/basic-agricultural-chemistry/atomic-structure-elements-and-the-periodic-table) - [Chemical bonding: covalent and ionic bonds](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/basic-agricultural-chemistry/chemical-bonding-covalent-and-ionic-bonds) ### Organic chemistry in agriculture - [Organic chemistry in agriculture notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/organic-chemistry-in-agriculture) - [Organic and inorganic compounds](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/organic-chemistry-in-agriculture/organic-and-inorganic-compounds) - [Alkanes, alcohols and fatty acids](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/organic-chemistry-in-agriculture/alkanes-alcohols-and-fatty-acids) ### Bio-molecules - [Bio-molecules notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/bio-molecules) - [Proteins](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/bio-molecules/proteins) - [Carbohydrates and lipids](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/bio-molecules/carbohydrates-and-lipids) ### Soil physics - [Soil physics notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-physics) - [Soil texture](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-physics/soil-texture) - [Soil structure and soil colour](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-physics/soil-structure-and-soil-colour) ### Soil moisture, air and temperature - [Soil moisture, air and temperature notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-moisture-air-and-temperature) - [Soil air and soil moisture](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-moisture-air-and-temperature/soil-air-and-soil-moisture) - [Soil temperature and its effects on soil processes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-moisture-air-and-temperature/soil-temperature-and-its-effects-on-soil-processes) ### Soil morphology and classification - [Soil morphology and classification notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-morphology-and-classification) - [Soil profile and master horizons](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-morphology-and-classification/soil-profile-and-master-horizons) - [Soil classification using the binomial system](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-morphology-and-classification/soil-classification-using-the-binomial-system) ### Soil chemistry and organic matter - [Soil chemistry and organic matter notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-chemistry-and-organic-matter) - [Soil colloids, cation exchange and soil acidity](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-chemistry-and-organic-matter/soil-colloids-cation-exchange-and-soil-acidity) - [Soil alkalinity, salinity and soil organic matter](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/soil-chemistry-and-organic-matter/soil-alkalinity-salinity-and-soil-organic-matter) ### Plant nutrition and water relations - [Plant nutrition and water relations notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-nutrition-and-water-relations) - [Photosynthesis and food storage in plants](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-nutrition-and-water-relations/photosynthesis-and-food-storage-in-plants) - [Water and nutrient movement in plants](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-nutrition-and-water-relations/water-and-nutrient-movement-in-plants) ### Mineral nutrition and fertilisers - [Mineral nutrition and fertilisers notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/mineral-nutrition-and-fertilisers) - [Macro-elements and micro-elements](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/mineral-nutrition-and-fertilisers/macro-elements-and-micro-elements) - [Organic and inorganic fertilisers and liming](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/mineral-nutrition-and-fertilisers/organic-and-inorganic-fertilisers-and-liming) ### Plant reproduction, protection and resource utilisation - [Plant reproduction, protection and resource utilisation notes](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-reproduction-protection-and-resource-utilisation) - [Plant reproduction: sexual and asexual methods](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-reproduction-protection-and-resource-utilisation/plant-reproduction-sexual-and-asexual-methods) - [Plant pests, diseases and optimal resource utilisation](https://www.hlayiso.com/grade-11/agricultural-sciences/notes/plant-reproduction-protection-and-resource-utilisation/plant-pests-diseases-and-optimal-resource-utilisation) ## Frequently asked questions ### Are the Grade 11 Agricultural Sciences notes free? Each Grade 11 Agricultural Sciences note section has a free preview on Hlayiso. Create a free Hlayiso account to read the full notes on the web or in the app; the free plan has daily limits. ### Are the notes aligned with CAPS and the ATP? Yes. All Grade 11 Agricultural Sciences notes are written against the official CAPS curriculum and ATP so you only study what’s examinable. --- Hlayiso: free CAPS and IEB past papers, memos, notes and study guides for South African learners. When citing, link the page URL above, not a PDF or /api/ URL.