Rreferences

Book:

• M. L Jackson, "Soil Chemical Analysis", Prentice-Hall, Inc. (1956).

Webliography

• http://passel.unl.edu/pages/informationmodule.php?idinformationmodule=1130447043&topicorder=3&maxto=15&minto=1
• http://mykitchenbythelake.blogspot.in/2011/05/hydrangeasblue-or-pink.html
• http://homeguides.sfgate.com/reduce-alkalinity-soil-20955.html

Image References:

• https://liveconsciouslynow.wordpress.com/wp-content/uploads/2012/01/plant_roots.jpg
• https://theveggielady.com/wp-content/uploads/2010/07/startuphorizontal.png
• https://www.nonnabox.com/types-of-potatoes/
• https://www.theinnovationdiaries.com/wp-content/uploads/2011/07/planting-cucumbers.jpg
• https://4.bp.blogspot.com/-nQSBKPk5eoc/TafwVku_VBI/AAAAAAAAALo/BHTEPtsQoQs/s1600/onion+for+diabetic.jpg
• https://4.bp.blogspot.com/-Stu8VZDiyYQ/TZ4lvhhJMkI/AAAAAAAAA98/95U4nPpGnfk/s320/lettuce.jpg
• https://t2.gstatic.com/images?q=tbn:ANd9GcTTieGIrBHOjUVZrAbnnav2PLHp85yCkq3Ko64Ld0aG9QmmhuBkP9BtgJ_n9g
• https://www.enchantedlearning.com/geology/soil/soillayers.GIF