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1. Soybean Growth Components as Influenced by No-till and Strip-till Systems and Different P and K Rates and PlacementsReduced tillage and broadcast phosphorus (P) a nd potassium (K) applications can lead to accumulation of these nutrients in the soil surfa ce. The objective of this study was to determine the impact of conservation tillage (no-till and strip-till) and rate/placement of P and K on soybean production. The experiment was arranged in a split-split-block design with three replications with tillage/placem ent no-till broadcast (NTBC), no-till deep placement at 15 cm (NTDP), and strip-till deep placement... |
2. Current Perceptions on Soil Fertility Recommendations and Status of Soil Fertility in IllinoisWhile most soils in Illinois are generally recognized for their high productivity, regular application of phosphorus (P), pot assium (K), and limestone are necessary to maintain their productivity. Determination of soil P, K, and pH levels through soil analysis is necessary to guide application of these nutrients and limestone. Due to recent high fertilizer prices there has been interest from producers to temporarily reduce or eliminate P and K applications without reducing crop yield. In an effort... |