Waec Model Questions Vol1 2025 Agricultural Science Question 13

A farmer intends to plant maize and cowpea in alternating rows on a rectangular field that is 500 m long and 100 m wide (area = 5 ha). Maize rows are spaced 75 cm apart and seeds are spaced 25 cm along the row. Cowpea rows are spaced 45 cm apart and seeds are spaced 15 cm along the row. The farmer can demonstrate to 150 farmers each week, and each demonstration farmer influences two other farmers per week to adopt the same practice. Assuming the program runs for the whole field and that all demonstrated farmers adopt immediately, calculate the total quantity of seed required for each crop (maize and cowpea) before accounting for a 5 % loss during sowing. Express the answer in kilograms, using seed weights of 0.3 g per maize seed and 0.15 g per cowpea seed. Round each answer to one decimal place.