ag·ro·bi·ol·o·gy 
(ăg′rō-bī-ŏlə-jē)
(ăg′rō-bī-ŏlə-jē)n.
The study of plant nutrition and growth in relation to soil conditions, especially to determine ways to increase crop yields.
ag′ro·bi′o·logic (-ə-lŏjĭk), ag′ro·bi′o·logi·cal adj.
ag′ro·bi·olo·gist n.