quality / the / of / work / to / yield / improve / the / of / crops / Agronomists / work / the / soil / increase / the / of / fields / and / quality / maintain / , / , / .
Agronomists work to improve the quality work of crops, increase the yield of fields, and maintain the quality of the soil.
Agronomists improve to work the quality work of crops, increase the yield of fields, and maintain the quality of the soil.
Agronomists improve to work the quality work of crops, increase the fields of yield, and maintain the quality of the soil.
Agronomists increase to improve the quality work of crops, work the yield of fields, and maintain the quality of the soil.