Varietal Differences in the Phosphorus Feeding Capacity of Plants

Abstract

IntroductionAgronomists have frequently noted that different strains of common crop plants often show marked developmental contrasts when grown under uniform nutritive conditions, a tendency often termed differential feeding capacity. Such physiological differences are frequently great enough to necessitate profound modifications in tillage and fertilizer practice whenever contrasted strains of a single species are cultivated.An experiment was undertaken to isolate sharply contrasted strains of inbred corn selected on a performance basis under controlled nutritional conditions, and next to determine which inorganic elements were ineffectually utilized.The application of nutrients on a rational basis not only requires that the absorbing power of individual species for particular elements be known but that the optimum time for making these elements available to the roots of the growing plant should be considered. There is much discussion in the literature of plant nutrition (12,22,29) with regard to this time element,

Response to phosphorus of populations of white clover

“…Studies of intraspecific differences in response to phosphorus (P) have usually been conducted in sand or solution culture in either glasshouse or growth cabinets (e.g., Smith 1934;Lyness 1936;Snaydon & Bradshaw 1962a;Crossley & Bradshaw 1968; • Permanent address: Grasslands Division, DSIR, Private Bag, Palmerston North, New Zealand Received 4 July 1985; revision 12 November 1985 Whiteaker et al 1976;Clark et al 1978;Fox 1978;Coltman et al 1982;Fawole et al 1982a, b;Gabelman & Gerloff 1982), although a few studies (e.g., Fox 1978;Caradus et al 1980) have used soil culture. There is no evidence that intraspecific differences in response to P, as determined in glasshouse studies, are related to differences in response to P and tolerance of low P in the field.…”

EFFECTS OF DIFFERENT AMOUNTS OF POTASSIUM ON GROWTH AND ASH CONSTITUENTS OF ANANAS COMOSUS (L.) MERR

“…claim that they may be characterized by their mineral nutrient efficiencies. LYNESS (22) states that three varieties of corn, compared in their capacity for absorbing phosphates from sand cultures of similar concentration, were in the ratio of 3: 5: 7. Many of the disagreements may be justified either by differences in familial plant relationship or by differences in composition of nutrient solutions.…”

Variability of P Uptake by Plants

“…Meanwhile, it has been demonstrated for many plant species that under P limiting conditions root and shoot responses are genetically variable (Vance 2011). Early trials conducted by Gregory et al (1928), Smith (1934), and Lyness (1936) demonstrate already the variation in P uptake and P concentrations between crop varieties in barley and corn. Such findings led to the attempts to breed varieties with higher P use efficiency (Sarić 1987;Jones et al 1989;Manske et al 2001;Manschadi et al 2014) which is most important for regions where available soil P is not only limited by fertilisation but also by soil properties such as the low pH values of acidic soils.…”