Effect of Soil Temperature and Moisture on Yield and Nutrient Uptake by Barley

Abstract

S oi,t Re s e ar c tt I n s ti t ut e, r rrf; r"o !#,fh e n t of A gr i c ut t ur e, O t t atu a Received January 8, 1965 ABSTR,A,CT In a field ex.periment.yields of barley rvere lower. rcgardless of rnoisture, when rne mean mlnrmal soll temperarure \\as near 27"C rhan lrear 9.C or lg"C. The highest yields were obtained at 18"C. Application of fertilizei increased final yields ancl uptake of N, P, and K at 9"C a,id te"C but not ar27.C. At 9"C and 18"C resp,onse to added fcrtilizer occurred as the moisturc contenr of tfte ioii was raised from rear thc u-ildng point to field capacity. During the early stages of gloYth an incrcase eitlier in temperature br moisture inireased the uptake.of N, P, and.K. Pcrce-nrage

Influence of Soil Moisture Levels and Planting Dates on Yield and Chemical Fractions in Two Barley Cultivars

“…The three moisture levels, Ml, M2, and M3 were equal to or greater than 25, 50 (normal rainfall) and,90Vo, of field capacity, respectively. The maintenance of the moisture levels has been described previously (Mack 1965 The highest level of ash in the grain in both cultivars was observed in samples from the second date of planting, D2 (Table 2). This corresponds to the treafrnent that also gave the lowest grain yields (Table 1).…”

“…The three moisture levels, Ml, M2, and M3 were equal to or greater than 25, 50 (normal rainfall) and,90Vo, of field capacity, respectively. The maintenance of the moisture levels has been described previously (Mack 1965 …”

Suitability of breeders' plots for evaluation of spring harley

“…However, because small plots are used extensively for crop evaluation in other countries, the use of breeders' plots, such as those described by Copp ( 1970) for initial screening trials, has been suggested for evaluation trials in order to reduce their cost. Mack (1965) has shown that soil temperature and moisture affect the uptake of N, P, and K, and the yield of barley. The wellknown border-row effect in cereal trials (Miller & Mountier 1955;Salmon & Hanson 1964, chapter 16) also provides a measure of the effects of differences in plant environment.…”

Amino-Acid Composition of Rhizosphere as Affected by Soil Temperature, Fertility and Growth Stage

“…Two greenhouse e.xperiments were conducted using soil, a Grenville loam taken from field plots previously cropped with barley (10) The data in Fig. 1 show the number of days required for the oat plant to reach various specif,c growth stages and the resulting changes in the growth of the plant.…”