Fertilizers and the Nutritive Value of Wheat Grown on a Sulphur-Deficient Grey Wooded Soil

Abstract

Rate of gain, efficiency of food utilization, and nitrogen retention by weanling rats were used as criteria to determine the nutritive value of wheat grown on a sulphur-deficient Grey Wooded soil. All diets were supplemented with minerals, vitamins, and lysine. Grain from an area continuously cropped to wheat-fallow and from an area cropped to a 5-year grain-legume rotation were compared. On Breton loam, a Grey Wooded soil, grain is highly responsive to fertilization with nitrogen; and legumes are very highly responsive to sulphur fertilization. Samples were fed from plots receiving the same fertilizer treatments in each cropping system. Fertilizer treatments and cropping systems both caused occasional significant differences, and were associated with some consistent trends for differences, in nutritive value of wheat. In general, the grain was of substantially superior nutritive value when grown following legumes; in one year these differences tended to be greater with fertilizer treatments which increased yields. During the same year fertilization with manure tended to improve the nutritive value of fallow wheat. The animal growth and food efficiency were closely related to the protein content of the foods. There were differences between results obtained in 2 successive years. While the differences may have been due to the effect of seasons or to the biennial application of fertilizers they appeared to be closely related to protein content of the grain, a characteristic which long-time data have shown to be highly variable in grain from the Breton plots.

Growing Season Nitrous Oxide Emissions from a Gray Luvisol as a Function of Long-term Fertilization History and Crop Rotation

“…Lime is added to adjust the soil pH or acidity of the soil. Early response of clover to added lime was noted by Wyatt and Newton 35 and the importance of moderating soil acidity with added lime, especially in legume forages, was recommended by Bentley et al 2 and McCoy and Webster. 19 As mentioned earlier, lime was added at irregular intervals until 1972, but since then has been added to the east half of the treatments in the 5-year rotation series and to the entire area of the wheat-fallow rotation series whenever soil pH drops to 6.0 or below.…”

“…25,26,27,28,3 Current recommended fertilization practices in these soils call for N, P and S application for grains and P and S application for legumes. In addition to yield responses, adequate N, P and S fertilization resulted in higher protein in grains especially in the five-year rotation, 29,1 and added P and S resulted in a higher nutritional feed quality for forages. 2,33 Although McAllister 18 recommended addition of potassium (K) fertilizers in addition to N and P fertilizers, long-term crop responses to added K at Breton have been small.…”

“…In addition to yield responses, adequate N, P and S fertilization resulted in higher protein in grains especially in the five-year rotation, 29,1 and added P and S resulted in a higher nutritional feed quality for forages. 2,33 Although McAllister 18 recommended addition of potassium (K) fertilizers in addition to N and P fertilizers, long-term crop responses to added K at Breton have been small. Determining how much additional crop yield can be produced when a nutrient is added to the soil can assess soil nutrient deficiencies.…”

Long-term rotation impacts soil total macronutrient levels and wheat response to applied nitrogen, phosphorus, potassium, sulfur in a Luvisolic soil

“…Later, Wyatt (1945) also reported the response of alfalfa and clover to applied S. The effects of rotation on crop response to fertilizer were first emphasized in the publication by Wyatt et al (1939) and later in Wyatt (1945) and Juma et al (1997a), where it was reported that wheat response to added N and P was much greater following clover than following wheat or fallow. Later, S cycling and response of cereals and forages to applied S were investigated more extensively (Cormack et al 1951;Renner et al 1953;Bentley et al 1955;Bentley et al 1956;Bentley et al 1960;Pawluk and Bentley 1964). Other investigations focussed on rotation effects on speciation and cycling of N (Khan 1971;Monreal and McGill 1985;Rutherford and Juma 1989;Wani et al 1991Wani et al , 1994Juma 1995), P (Odynsky 1936;McKenzie et al 1992;Morel et al 1994), and C (Juma et al 1997a(Juma et al , 1997bCampbell et al 1997;Janzen et al 1998;Grant et al 2001;Izaurralde et al 2001aIzaurralde et al , 2001bPaul et al 2004;Izaurralde et al 2006).…”

Nutritional Value of Hard Red Spring Wheat Grain Protein as Influenced by Fertilization and Cultivar1

“…2 Soils consultant (formerly graduate research assistant), 3601 Garden Brook, Dallas, TX 75234, professor of soil science, and associate professor of animal science, respectively. 366 1953;McElroy et al, 1948;McElroy and Draper, 1949;Newton et al, 1959;Bentley et al, 1960;McBeath et al, 1960;Bhatty et al, 1963;Austin and Ahuja, 1974;Thomke and Widstromer, 1975). Cultivarprotein differences have likewise resulted in significant animal growth differences (Dobbins et al, 1950;Bhatty et al, 1963;Davis and Sosulski, 1976;MacAuliffe et al, 1977).…”