soils reaction and liming,fertilizer

•  It stands for potential of hydrogen which is a measure of how acidic or alkaline a soil or solution is.


  pH
• In this method of pH determination, a 1:1 soil:water ratio is made.

  Electrometric
• In this method of pH determination, an indicator dye drop is used.


  colorometric
• The favorable pH for agricultural crops.

  5.5 to 6.5
• As the pH decreases below 7, the soil becomes.


  Acidic
•  As the pH increases above 7, the soil becomes.

  Alkaline
•  A pH of 7 means the soil is.

  Neutral
• The strength of the liming material in correcting soil acidity with reference to calcium carbonate.

  Relative Neutralizing Power
• This is done to increase the pH or to lower the acidity of the soil.


  adding lime
• The chemical formula of calcium carbonate.

  CaCO3
• Any substance that is added to the soil to supply the plants with certain nutrients needed by them.  

  fertiizer
• A type of man-made fertilizer that has definite chemical composition.

  inorganic
• A fertilizer material that is derived from such sources, including compost, manures, poultry droppings and domestic sewage.

  organic
• A fertilizer that carries only one element


  single
• A fertilizer that carries two elements.

  compound
• A fertilizer that contains all the three basic (primary) elements.

  complete
• A fertilizer that contains several elements and the source of elements cannot be identified.

  mixed
• A fertilizer that contains several elements and the source of elements cannot be identified.

  mixed
• The minimum guarantee of the plant nutrient in terms of percentages of N-P2O5-K2O.

  fertilizer grade
• This is a material used to provide the fertilizer with the desired amount of nutrient per unit of weight.

  filler
• This is the amount in kilograms of N, P2O5, and K2O recommended per hectare.

  fertilizer recommendation