Question fpr BTOs

BTO leased an overgrown, grass/weed infested, hadn't seen steel nor NPK for a decade, field next door, Houston Black Clay soil. Comes in with a 24' tandem disc and makes a couple of passes passes spaced over several days to allow time for some drying....seemed to be GPS controlled and not sure he lifted the discs in U turns or not....just a sideline curiosity.

Next in comes a 3 section, road worthy planter of probably 24' expanded and on the side of the tractor were 2 very large poly tanks filled with liquid. Tractors were red "that's what granddaddy started with" was the reply, disc was blue and planter was green and top seemed to be pretty wide, like large seed capacity or maybe seed-fert combo....never saw any replenishment activity so I don't what was in the drill boxes. Doing it this time of the year leads me to assume wheat would be the crop as it, corn/milo, and cotton are the rotational crops here.

My curiosity is wondering what is in the liquid in the large poly tanks on either side of the tractor.....NPK or pre-emergent? Wheat top dressing/green bug spraying is usually the last weeks in January where the weather cooperates for getting on the field with the equipment.....course that is usually when the crop gets planted in September and has some growth going into freezing temperatures. Temps have been mild here with one light frost 1 Nov.

Perfectly normal to see big poly fertilizer tanks mounted on big tractors around here at planting time but around here most planting gets done in the springtime.

Lot of guys here pull a big liquid fertilizer tank behind the air seeder at spring seeding. Its safer than anhydrous but a little more expensive I hear. Sounds like this guy is counting on good rain for that crop because without rain, all the fertilizer in the world isn't going to produce a crop on that dry ground.

You can open the ground in the fall,and plant a cover crop for spring plow down. A little fertilizer or maybe a burn down. THere is a lot of fall spraying around here.

Open a seed row with a pen knife and see what is in the row. Sounds like a no thrill planted deal though.

Spraying isn't an option as residences are on both sides of the fields as are my fields, and prevailing winds favor drift where they wouldn't want it. Yes I had an applicator's license and know the rules.

On other guys replies, thanks. Just idle curiosity, no biggie. Will know next spring.