Purba Bardhaman is an agriculturally prosperous district of West Bengal. Ayrshire is one of the most agriculturally fertile regions of Scotland. This area comprises closed and open mangrove forests, agriculturally used land, mudflats and barren land. Historically, this valley has been the most agriculturally productive region of Scotland. Many of the large Argentinean cities and agriculturally productive areas lie near rivers. Some researchers are concerned that neonicotinoids applied agriculturally might accumulate in aquifers. Intermediate topography affords the best conditions for the formation of an agriculturally productive soil. The area was thought to be highly productive agriculturally. Agriculturally based people historically divide the year into four seasons. In Mesoamerica, the Aztecs were active farmers and had an agriculturally focused economy. Others include agriculturally important bacteria capable of inducing nitrogen fixation in symbiosis with plants. Historically, the area was considered to be one of the finest agriculturally in Guatemala. This assessment was due to the scarcity of agriculturally viable land in the Klamath Mountains. Most of the agriculturally productive areas were held by the British. They have also been known to adapt to agriculturally developed lands.