The commonest method of land tenure in Nigeria is

If a crop requires 1.5kg phosphorus per hectare, how many kg of manure will be required per hectare is 1kg manure contains 0.32kg of phosphorus

The process whereby rocks are broken down into small particles through both physical and chemical factors is known as

The parent material of a soil is formed from the disintegration of

The following are the advantages of the sprinkler method of irrigation except