Agricultural Science Past Questions and Answers

A biotic factor influencing agricultural production is

Tropical crops grow best within the temperature range of

The alternate heating and cooling of rocks will result in

Which of the following is an example of igneous rock?

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.