Mindblown: a blog about philosophy.
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Orientation
Orientation This section sets the food security scene and provides the necessary background for the practical modules to follow. Introduction In late 2022, the practical reality of that is already playing out as famine grips large parts of Africa. Millions are starving…right now! And the situation is worsening by the day as Russia and Ukraine (two…
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Introductory Course Objectives & Overview
How to Build and Operate an iAVs Sandgarden Course Objectives: Upon successful completion of this program you will be able to: Relate iAVs key heritage milestones. Describe what an iAVs sandgarden is – and how it works. Describe the advantages of its utilisation. Source the key materials and components. Design a layout based on your…
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5.4.1. Nitrate in Depth
Predicate All discussions of research papers on nitrate must be predicated with a caution. The 10 ppm of nitrate of the scientists, (the Hach test kit and the Lamotte test kit) is a 44 ppm test level of nitrate via the “normal” aquarium test kits (API aquarium test kit, the Seachem Multitest kit, the Sera…
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Ecology of Planted Aquarium by Diana Walstad *link only
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Chlorine
Chlorine You may not realise it but chlorine is classed as a plant micronutrient meaning that it is essential for the proper growth of plants. It is important to note though, that it is the ion (Cl‑) rather than the gas (Cl2) that is used by plants. In particular, chlorine is important for plant photosynthesis as it…
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SOILS – PART 2: PHYSICAL PROPERTIES OF SOIL AND SOIL WATER – Pore Size
pore size is probably one of the most important physical features of a soil. It controls water and air movement and storage. Pores come in all sizes, although clays have predominantly small pores, and sands have large pores. An ideal soil condition is one with an equal number of large and small pores. Large pores allow…
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Soil Water Dynamics
gold Water dynamics in soil are governed by many factors that change vertically with depth, laterally across landforms and temporally in response to climate (Swarowsky, et al., 2011). This article focuses on soil water dynamics and introduces concepts of soil moisture storage, water flow and the soil properties that influence these processes. The learning objectives discussed…
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Irrigation Water Management: Irrigation Methods – Furrow Irrigation
CHAPTER 3. FURROW IRRIGATION Furrows are small, parallel channels, made to carry water in order to irrigate the crop. The crop is usually grown on the ridges between the furrows (Figures 23 and 24). 3.1.1 Suitable crops Furrow irrigation is suitable for many crops, especially row crops. Crops that would be damaged if water covered…
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How do you determine the proximate composition of a fish feed? (website)
How do you determine the proximate composition of a fish feed? Table of Contents How do you determine the proximate composition of a fish feed? What is proximate composition of fish? What is the crude protein of fish meal? What is fish meal fertilizer? What are the sources of raw materials in making fish meal?…
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Mineral soil definition
This is an important definition and distinction from organic soils because the availability of nutrients is much different. also, an iAVS is saturated for 28 days a year 🙂 Mineral soil means a soil that is saturated with water less than 30 days (cumulative) per year in normal years and contains less than 20 percent (by…
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