Course Content
Learn soil fertility, fertilizers and integrated nutrient management with Braimy- B.SC Agriculture
About Lesson

a) Topography Evaluate the map and draw conclusions.

b) Observation Observe the field as it is actually as like as map or not.

c) Divide land into categories

i. Low land

ii. Upland

iii. Irrigated and drained land

iv. Water logged land

v. Cattle shed

vi. Residential area

d) Sample from each category

i. Use auger type on the basis of soil nature and soil (land) type

ii. Apply composite soil sampling technique

iii. Large: 10-20 samples

iv. Small area: 5-10 samples

e) Sample size 250-500 gm

f) Shade drying

g) Grinding

h) Sieving and storage

i) Make final samples for each category, then analyze and recommend for each category of land separately.

j) Depth of samples

k) Agronomical crops : 0-6 inch

l) Horticultural (tree) crops: 1m

m) Different layers of soil depth can also be taken but tedious expensive.

n) Sampling purpose: It may be for farmer recommendation, research purpose, to study nutrient forms and

availability etc.

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