Lecture 3

• Quantitative - it is an approach that is based in numeric indicators
• qualitative - it is an approach that is based on characteristics that may be combined to state
• Geographic Information System (GIS) - use for physical parameters such as climate, soil characteristics
• remote sensing with GIS- it is an technique that is efficient and reliable method of mapping agricultural land suitability
• Approach 1 what approach is where you identify the crop first, then find a suitable area for growing
• approach 2 what approach is where you find the area/site for growing first , before choosing a suitable crops to grow
• soil dept is the soil characteristics that is where the top soil is the most fertile layer of the soil profile
• soil texture is a soil characteristics that refers to the relative proportion of soil particles (sand, silt, clay)
• soil structure a soil characteristics that should be granular and porous, for easy root proliferation
• nutrient content - a soil characteristics where a macronutrient and micronutrient must always be available at optimum and balance amount
• soil pH a soil characteristics where pH measures a degree of alkalinity or acidity
• climate - refers to the average condition of the atmosphere in a given area
• components of climate are: temperature, light, rainfall, typhoons
• Temperature a component of climate that determines the distribution of the crop species in the world
• light a component of climate that controls practically all aspects of plant growth and development
• light intensity and light duration are the two aspect of light
• light intensity is an aspect of light that varies with season
• light duration is an aspect of light that controls flowering in some plants , control the bulb and tuber formation in certain crops
• rainfall a component of climate that is a primary source of water for crop production
• typhoons is a component of climate that is extremely destructive to crops
• The four climate types: type I, type II, type III, type IV
• type I is climate type that the two pronounced season are dry and wet
• type ii is a type of climate that has no distinct dry period
• type iii- is a type of climate that has no pronounced maximum rainy period
• type iv is an type of climate that is rainfall is more or less evenly distributed throughout the year