HI EVERYONE..TODAY WE ARE GOING TO SEE ABOUT IMPORTANCE OF SOIL TO AGRICULTURE WE ALL KNOW THAT SOIL IS A KEY ELEMENT OF AGRICULTURE. WITHOUT IT WE WOULDN'T ABLE TO GROW PLANTS, WHICH ARE USED AS FOOD FOR BOTH HUMANS AND ANIMALS . IN THIS BLOG PAST I WOULD LIKE TO FOCUS A LITTLE BIT MORE ON THE TECHNICAL SIDE OF SOIL AND EXPLAIN SOME OF ITS CHEMICAL AMD PHYSICAL PROPERTIES. THERE ARE DIFFERENT DEFINITIONS OF SOIL, DEPENDING ON THE APPROACH WE WANT TO TAKE. FOR US [ FROM THE AGRICULTURAL POINT OF VIEW ] IT IS AN UNCONSOLIDATED MINERAL OR ORGANIC MATERIAL THAT IS ON THE SURFACE OF THE EARTH IN WHICH WE GROW PLANTS. FROM A GEOLOGICAL POINT OF VIEW, WE WOULD PROBABLY LOOK AT HOW IT WAS FORMED AND WHAT KINDS OF LAYERS IT HAS. AS FAR AS FOOD IS CONCERNED IT IS IMPORTANT TO STUDY A COUPLE OF ITS PROPERTIES THAT ARE FUNDAMENTAL FOR PLANT GROWTH. THERE ARE TWO IMPORTANT ASPECTS AS FAR AS SOIL PROPERTIES ARE CONCERNED . FIRST WE FOCUS ON ITS HYDRAULIC CONDUCTIVITY , THE ABILITY OF THE SOIL TO MANAGE , HOLD AND DRAIN WATER. SECOND , WE LOOK AT ITS NUTRIENT MANAGEMENT, WHICH IN ADDITION TO THE ABOVE MENTIONED FACTORS ANALYZES THE ORGANIC MATTER CONTENT , CATION EXCHANGE CAPACITY AND COATINGS ON SAND GRAINS. ALL THE ABOVE -MENTIONED PROPERTIES DETERMINE THE TEXTURE OF SOIL.EVERY SOIL IS A MIXTURE OF THREE MAIN COMPONENTS; SANDS, CLAY AND SLITS. LOAM IS THE MOST FERTILE TYPE OF SOIL AND HAS A MIXTURE OF THESE COMPONENTS . FOR EXAMPLE, A MORE SANDY SOIL WILL HAVE A HIGH HYDRAULIC CONDUCTIVITY AND A LOW WATER HOLDING CAPACITY . WATER DRAINS THROUGH SAND VERY EASILY AND IF TOO MUCH WATER ENTERS THIS KIND OF SOIL IT CAN BE LETHAL TO PLANTS . SANDY SOILS NEED A SPECIAL KIND OF IRRIGATIONS SYSTEMS . MOST OF FARMERS TRY TO IRRIGATE THESE SOILS MANY TIMES THROUGHOUT A DAY WITH SMALL QUANTITIES OF WATER. THIS HELPS THE PLANTS EFFICIENTLY USE THE WATER SUPPLY WITHOUT IT WASHING AWAY ALL THE NECESSARY NUTRIENTS. WATER DOES NOT HAVE ANYWHERE TO GO IN SUCH A SHORT TIME , SO ITS LEVEL GOES HIGHER AND EVENTUALLY FLOODS OUR PLANTS . MOREOVER A HIGHER % OF CLAY AND SLIT IN THE SOIL WILL INCREASE THE CATION EXCHANGE CAPACITY. IT IS AN ABILITY OF THE SOIL TO HOLD POSITIVELY CHARGED NUTRIENTS CALLED CATIONS [ CALCIUM, MAGNESIUM, POTASSIUM AND AMMONIUM-N ] THANK YOU :~)
Soil is the base for agriculture.. as it is the foundation... the nutrients and type of soil determines to some extent the strength, mineral content, taste and aroma of the crop... Mainly the pollution of the soil must be prevented... and it must be made nourished...
ReplyDeleteDue to the addition of ammonia , potassium and calcium the nutrient of the food can be increased but the soil will get spoiled due to this. We must take any step to prevent this.
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