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- Barbarick, K. A.
- Agronomy journal 1985 v.77 no.3 pp. 442-445
- Medicago sativa; cultivars; potassium fertilizers; Colorado
- ... Most Colorado soils contain adequate levels of plant-available K. This study investigated the influence of up to 750 kg K ha⁻¹ on four semidormant varieties of alfalfa (Medicago sativa L.) grown on a soil high in K (Nunn clay loam—Aridic Argiustoll) over 4 years. Fertilizer K significantly increased dry matter yield for the first 2 years and significantly increased the total alfalfa yields for the ...
- Nicholaides, J. J.; Chancy, H. F.; Mascagni, H. J.; Wilson, L. G.; Eaddy, D. W.
- Agronomy journal 1985 v.77 no.3 pp. 466-470
- coastal plains; Ipomoea batatas; phosphorus fertilizers; potassium fertilizers; North Carolina
- ... Limited literature is available to provide recommendations of K source and rate and P rate for sweet potato [Ipomoea batatas (L.) Lam.] production. Many growers, therefore, continue to use the more expensive sulfate (SO₄) source of K rather than chloride (Cl) and higher than recommended rates of K and P. Accordingly, on-farm experiments were conducted during 3 years on North Carolina Paleudults to ...