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Precision agriculture has renewed the interest of farmers and researchers to conduct on‐farm planned comparisons and researchers with respect to field‐scale research. Cotton (Gossypium hirsutumL.) yield monitor data collected on‐the‐go from planned field‐scale on‐farm experiments can be used to make improved decisions if analyzed appropriately. When farmers and researchers compare treatments implemented at larger block designs, treatment edge effects and spatial externalities need to be considered so that results are not biased. Spatial analysis methods are compared for field‐scale research using site‐specific data, paying due attention to local and global patterns of spatial correlation. Local spatial spillovers are explicitly modeled by spatial statistical techniques that led to improved farm management decisions in combination with the limited replication strip trial data farmers currently collect.

Wheat varieties differ in forage and grain yield in their tolerance to acidic soils.Grain yield maximized at soil pH of 5.8 and 4.8 for sensitive and tolerant varieties.Forage yield maximized at soil pH of 6.0 and 5.5 for sensitive and tolerant varieties.We developed a protocol to estimate regional gains from variety selection or liming acidic soils. We combined field studies to regional soil databases with the objective of presenting a protocol to forecast regional gains in winter wheat (Triticum aestivumL.) forage and grain yield and revenue, from liming or selecting a variety tolerant to acidic soils. First, we developed forage and grain yield response curves to soil pH using a variety by soil pH study conducted during 3 yr (2013–2015) at two Oklahoma locations. Second, we used a database of soil pH samples representing 93% of the wheat growing region of the state (n= 11,905) coupled with 15‐yr average county yield and harvested area to estimate potential gains for grain‐only and dual‐purpose scenarios. Relative grain yield maximized at soil pH of 5.8 for sensitive varieties and 4.8 for tolerant varieties. Forage yield maximized at soil pH of 6.0 for sensitive varieties and 5.5 for tolerant varieties. About 35% of the region had pH limiting to dual‐purpose and 28% to grain‐only production. Liming could improve grain‐only statewide yield in 0.14 Mg ha−1and revenue in US$19 ha−1, and adoption of tolerant varieties could increase yield in 0.11 Mg ha−1and revenue in $10 ha−1. Liming could improve dual‐purpose revenue in $37 ha−1and variety selection in $28 ha−1due to improved yield and forage. Potential additional statewide wheat production resulting from variety selection is 53,800 Mg and from liming 82,500 Mg. Our protocol can be used to aid development of agricultural policies and research prioritization at regional levels where acidic soils are prevalent.