What is method of collection of soil sample ?
Correct diagnasis o soil status depends on correct method of collection of representative soil samples. Number of soil sample to be collecting depends on uniformity of the land. Devide the plot into subplots that look different in appearance, soil type etc. Scrape a thin layer of soil from top to bottom on all sides of the pit. Mix soil samples of a sub-plot thoroughly and spread it on a paper. Devide samples in four equal parts and reject two opposite parts. Do not collect the soil from extreme corners of the field or immediately after rain or after the application of fertilizer.