Barley Production Under Various Nitrogen and Moisture Levels<sup>1</sup>

Stanberry, C. O.; Lowrey, Mark

doi:10.2134/agronj1965.00021962005700010011x

Cited by 9 publications

(5 citation statements)

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“…Drainage problems reduce the absorptive capacity of roots and create water stress, thus retarding growth and development (Kramer, 1969). Stanberry and Lowrey ( 1965) have shown that low N availability can be related to decreased development rates in barley. Because poorly drained sites may have had decreased aeration as well as N, both factors could have attributed to slower development.…”

Section: Phenological Stagesmentioning

confidence: 99%

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Whitman¹,

Hatfield²,

Reginato

1985

Agronomy Journal

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Analyses of the relationship between microclimatic data, yield and growth response usually have been conducted utilizing data collected on level terrain and in small experimental plots. A field study was conducted on 290 ha of undulating topography of a Sehorn‐Balcolm complex soil (Entic Chromoxeret and Typic Xerochert) near Dunnigan, CA (38°48′N 121°58′W) during 1977‐78 to evaluate the effect of slope position and microclimate differences on the growth and yield of barley (Hordeum vulgareL. cv. Briggs). The crop was planted on 3 to 9 Dec. 1977 at 112 kg ha−1density in a 0.15‐m row spacing. Sixteen sites were selected in the field prior to planting ranging from level to 36% slope with aspects from north‐ to south‐facing slopes. At each site twice‐weekly measurements were made of plant growth, i.e., height, number of green leaves, leaf area, number of tillers, dry weight, and phenological stage, on 10 randomly selected plants. Yield and all yield components were measured on 20 1‐m2samples at each site at the end of the experiment. Microclimatic data were measured at each site. The largest variations in crop development occurred prior to jointing and after anthesis. Both drainage and irradiance had large effects on plant growth, exhibited through differences in plant height, maximum leaf area, tiller survival, green leaves per plant, tillers per plant, relative growth rate, and dry matter production. A linear relationship was found between dry weight at the end of the season and intercepted radiation with a slope of 1.28 g MJ−1. Dry matter production and yield were affected by irradiance and drainage. The date of 50% heading was inversely related to the final yield and suggested that delayed flowering was detrimental to grain production in the dryland conditions of the Central Valley.

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Section: Phenological Stagesmentioning

confidence: 99%

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Whitman¹,

Hatfield²,

Reginato

1985

Agronomy Journal

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“…On the contrary, many researchers have shown that barley responded to relatively high fertilizer levels, whether under irrigated or dry farming conditions. Stanberry and Lowery (1965) showed that barley production was increased with the addition of up to 135 kg.ha ' of N, when they used 1010 mm water, but under limited moisture (470 mm) the response was only up to 65 kg.ha"' of N. On the other hand, Luebs and Laag (1967) pointed out that the yield of barley was reduced when a high amount of nitrogen was used under high water tension. Dwiredi et al (1989) showed that increasing nitrogen up to 80 kg.ha"' increased the number of tillers, spike length and grain yield.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen and Phosphorus Levels on Barley Cultivars Grown in Semi‐arid Conditions

Turk

1998

J Agronomy Crop Science

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Most farmers in the rainfed parts of Jordan who use fertilizers use less than optimum rates of N and P because of the uncertainties associated with rainfall. Research results obtained by the national program indicated that the use of improved barley cultivars and fertilizers would result in substantial yield increases. The objective of the present investigation was to determine the optimum combination level of N and P for newly promising cultivars. The effect of 0-0, 5-10, 10-20 and 15-30 kg.ha"' of nitrogen (N) and phosphorus (P) levels on barley cultivars Rum, Giza, Fun, Harmel and Arta under rainfed conditions in the Mediterranean climate was studied during two cropping seasons, 1994-95 and 1995-96. Increased grain and straw yields, total N and P uptake and RUE were recorded with increasing N and P levels for almost all cultivars. Rum was significantly (P = 0.05) the highest grain and straw producer and highest RUE at the 10 N-and 20 P kg.ha ' level. The cultivar X fertility level (N~P) interactions were not significant for both grain and straw yields and for total N and P uptake.

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“…The response of yield components generally varies widely with moisture supply, soil fertility level, and other growth-limiting factors. Schreiber and Stanberry (1965) and Stanberry and Lowrey (1965) reported that barley spikes per plant were increased. by increasing soil moisture during internode elongation with high N rates, especially when N was applied during elongation.…”

mentioning

confidence: 99%

Path Coefficient Analysis of Correlation Between Stress and Barley Yield Components¹

et al. 1980

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Water and fertility management practices are needed that will ensure economic crop production on irrigated lands in semi‐arid regions with extremes in drought and salinity. Barley, Hordeum vulgare L., was used as an indicator crop to evaluate the interactive effects of fertilizer (N and P), salinity, and irrigation management on crop yields. Greenhouse experiments with four replications were imposed on a nonsaline nongypsiferous Hunting silty clay loam soil (Aquic Ustifluvent). Nitrogen (0, 112, 224 or 448 kg N/ha) and P (0, 45 or 90 kg P/ha) were applied as urea and calcium superphosphate prior to planting. Six to eight seeds were planted in 576 pots and irrigated with tap water until the plants reached the two‐leaf stage, at which time they were thinned to two plants per pot. Salinity (ECW = 0.5, 1.5> 4.5, or 13.5 mmhos/cm) and water (irrigation interval of 2, 4, or 8 days) management treatments were then initiated. Data were collected on yield components and environmental factors. Regression coefficients (r3) on interactions were low, indicating that a small proportion of the total yield variability was accounted for by the various variables. However, water quality and quantity and N fertilizer interactions exhibited significant (P < 0.01) effects on yield components. Moreover, a negative yield response was produced by decreasing irrigation frequency and increasing water salinity. According to the correlation coefficients, three yield components (main heads, tiller heads, and floret abortion) had comparable effects on yield. In contrast, the path coefficients analysis attributed yield differences to direct and indirect influences of various parameters. Where correlation analysis simply measured mutual association between the various parameters and variables, the path analysis measured the relative importance of each. Although results indicated reduction in yield parameters, if managed correctly, moderately saline water can be used to obtain reasonable (but not maximum) yields. Where maximum yield decisions have to be made, however, better quality land and water should be used for crop production.

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Barley Production Under Various Nitrogen and Moisture Levels¹

Cited by 9 publications

References 1 publication

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Effect of Nitrogen and Phosphorus Levels on Barley Cultivars Grown in Semi‐arid Conditions

Path Coefficient Analysis of Correlation Between Stress and Barley Yield Components¹

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Barley Production Under Various Nitrogen and Moisture Levels1

Cited by 9 publications

References 1 publication

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley1

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley1

Effect of Nitrogen and Phosphorus Levels on Barley Cultivars Grown in Semi‐arid Conditions

Path Coefficient Analysis of Correlation Between Stress and Barley Yield Components1

Contact Info

Product

Resources

About

Barley Production Under Various Nitrogen and Moisture Levels¹

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Effect of Slope Position on the Microclimate, Growth, and Yield of Barley¹

Path Coefficient Analysis of Correlation Between Stress and Barley Yield Components¹