The influence of chlorides on yield and specific gravity of potatoes

Effects of Nitrogen, Phosphorus, Potassium, and Manure Factorially Applied to Potatoes in a Long-Term Study

“…The influence of the amounts and balance of nutrients applied upon potato quality, however, is rightly receiving more consideration. The depressing effect of high rates of K, and to some extent N, on the dry matter content of tubers has been reported by several investigators (Murphy and Goven 1959;Timm and Merkle 1936;Wright et al 1950). Russell and Garner (194I) reported potato yield differences due to applications of N, P, and K, and that the application of (May 1973) manure influenced the results obtained.…”

“…Timm and Merkle (1936) reported that soil variability, moisture content, and varietal differences apparently affected the response of potatoes as much as differences in the source of potassium. The use of KCI rather than ICSO.…”

Potassium Fertilization in Potato

“…Fertilizer dose was not the sole reason for specific gravity of potato tubers, higher specific gravity was reported from the potato harvested from the plots treated with SOP than those of MOP. Specific gravity increases on increasing K rates (Al-Moshileh 2005; Chamberland and Scott 1968; Khan 2012; Kunkel and Gardner 1965;Kunkel and Holstad 1972;Maier et al 1994;McDole 1978;Murphy and Goven 1966;Panique et al 1997;Roberts and Beaton 1988;Sandstra et al 1968;Tawfik, 2001;Terman et al 1953;Timm and Merkle 1963;White et al 1974;). (Kumar et al, 2007) reported that higher specific gravity was observed in the potato tubers fed with sulphate and nitrate sources of K than potassium chloride (KCl).…”

Potato plants (Solanum tuberosum L.) are chloride‐sensitive: Is this dogma valid?

“…Application of sulfate‐based instead of chloride‐based fertilisers (e.g. K 2 SO 4 instead of KCl) to potato plants is therefore recommended …”