I am not an Agricultural specialist, but from what i have read, ants can serve a role as a natural pesticide for crops. They can also create underground passageways which act as small waterways to allow water to be better absorbed by the soil. This can promote crop growth.

According to the first systematic review of the contribution of ants to crop production, they functioned more positively in killing pests, reducing plant damage and increasing crop yields.

Ants are general predators. They prey on pests that damage fruits, seeds and leaves, resulting in reduced crop yields.

Hello Rashed; In addition to what Coskun has suggested, some ants also tend hemipterans which often get established on crop and ornamental species. This association causes serious damage. Yet other nectar gathering ants defend the plants on which they forage and drive off pollinators of those plants. This may reduce crop yields. The answer to the question is complicated because there are so many ant species and so many functional groups. Cheers, Jim Des Lauriers

In agriculture: Seed dispersal, pollination, nutrient-rich waste deposition, soil aeration

Ants play a crucial role in residential, agricultural, and forest areas due to their diverse ecological functions. Here are some of the key contributions of ants in these environments:

Overall, ants play essential roles in maintaining ecosystem balance, promoting biodiversity, enhancing soil health, and providing ecological services in residential, agricultural, and forest areas. Understanding and conserving ant populations and their habitats is important for sustaining healthy ecosystems and the services they provide.

Ants turn and aerate the soil, allowing water and oxygen to reach plant roots. 

Ants take seeds down into their tunnel to eat the nutritious elaiosomes that are part of the seed. These seeds often sprout and grow new plants (seed dispersal)

Ants act as decomposers by feeding on organic waste, insects or other dead animals. They help keep the environment clean. Carpenter ants, which make their nests in dead or diseased wood, considerably accelerate the decomposition process of timber. After the ants leave, fungi and bacteria grow in the galleries and break down the lignin and cellulose on large surfaces.

Ant helps in pollination of flowers and helps in soil aeration

Thanks

The ants have contribution in reducing pesticide from the crop in order to increase the yied, yes it helps as push-pull approach