Abstract: Various agronomic technologies are described, including a computer-implemented method for forecasting crop yield and an agronomic web portal including determining an expected yield at a first time, determining a growth function representing how the expected crop yield changes over time and based at least in part on an intrinsic yield function and the growth function, determining an expected yield at a second time, wherein the second time is later than the first time.

Abstract: Generating a crop prescription using a computer coupled to a memory area includes receiving yield data for a plurality of crop population trials, wherein each trial is varied by at least one of a hybrid line, a population density, and a row spacing. At least one statistical model is generated based on the yield data to obtain a plurality of coefficients, which are stored in the memory area. A predicted yield for at least one selected hybrid line is determined based on the coefficients and a selected row spacing, and a predicted profit is determined for the at least one selected hybrid line based on the coefficients and the selected row spacing. A crop prescription is presented that includes a recommended hybrid line and population density for use by a grower.

Abstract: A mobile shielded plot sprayer including a wind shield having a side wall that defines an enclosed area, and a movable atomizer within the enclosed area. A track assembly is located within the enclosed area and supported on the windshield. The atomizer is part of a spray assembly mounted on the track assembly and is movable thereon in at least one horizontal direction relative to the wind shield. A reservoir integral with the spray assembly and adapted to hold a liquid spray composition is operatively connected to the atomizer to supply the spray composition thereto.

Abstract: A mobile shielded plot sprayer including a wind shield having a side wall that defines an enclosed area, and a movable atomizer within the enclosed area. A track assembly is located within the enclosed area and supported on the windshield. The atomizer is part of a spray assembly mounted on the track assembly and is movable thereon in at least one horizontal direction relative to the wind shield. A reservoir integral with the spray assembly and adapted to hold a liquid spray composition is operatively connected to the atomizer to supply the spray composition thereto.

Abstract: A mobile shielded plot sprayer including a wind shield having a side wall that defines an enclosed area, and a movable atomizer within the enclosed area. A track assembly is located within the enclosed area and supported on the windshield. The atomizer is part of a spray assembly mounted on the track assembly and is movable thereon in at least one horizontal direction relative to the wind shield. A reservoir integral with the spray assembly and adapted to hold a liquid spray composition is operatively connected to the atomizer to supply the spray composition thereto.