Ornamental horticulture

The minimum time interval between the last pesticide or any chemical application and harvesting othe produce is known as waiting period. It is commonly known as Pre-Harvest Index (PHI).

Chi-square test is a statistical test used to determine the relationship between two categorical variables.

Those crops that have many networking or branched roots which look like clusters are known as fibrous root crops. For Example: rice, wheat, corn, onions, sugarcane.