Agricultural Science Questions and Answers

In an experiment to determine the percentage of humus content in a soil, the following results were obtained:
mass of dish = 10 gm
mass of dish and oven-dry soil = 50 gm
mass of dish and soil after heating = 40 gm
Calculate the percentage of humus in the soil sample.

In an experiment to determine the percentage of humus content in a soil, the following results were obtained:
mass of dish = 10 gm
mass of dish and oven-dry soil = 50 gm
mass of dish and soil after heating = 40 gm
Calculate the amount of humus in the soil sample.

Which of the following is an example of igneous rock?

The alternate heating and cooling of rocks will result in

Tropical crops grow best within the temperature range of