The effect of time of planting on yield attributes of oat varieties in the Ord River Valley

1966 ◽  
Vol 6 (22) ◽  
pp. 250
Author(s):  
DF Beech ◽  
MJT Norman
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Close Relation ◽  
Sowing Date ◽  
Dry Season ◽  
River Valley ◽  
Research Station ◽  
Dry Matter Yield ◽  
Yield Attributes ◽  
Steep Rise

During the 1964 dry season a study was made at Kimberley Research Station of the effect of time of sowing on the yield attributes of oats grown under irrigation. Two varieties, Avon and Ballidu, were sown at four dates from May to July. Avon, the later variety of the two, declined in grain yield from the first sowing onward and gave a negligible yield at the last two sowings. Ballidu reached maximum grain yield at the second sowing and gave a negligible yield at the last sowing. It appeared that, as in wheat, the major factor influencing grain yield in relation to time of sowing was the steep rise in temperature from August onward. There was a close relation between date of anthesis and grain yield irrespective of variety. Maximum grain and dry matter yield would be expected if sowing date were selected to bring a given variety to anthesis in early August.

An analysis of the environmental limitation to yield of irrigated grain sorghum during the dry season in tropical Australia using a radiation, interception model

1986 ◽  
Vol 37 (2) ◽  
pp. 135 ◽  
Author(s):  
RC Muchow ◽  
DB Coates
Keyword(s):  
Grain Yield ◽  
Conversion Efficiency ◽  
Dry Matter ◽  
Sandy Loam ◽  
Sowing Date ◽  
Grain Sorghum ◽  
Dry Season ◽  
Dry Matter Partitioning ◽  
Crop Cycle ◽  
Tropical Australia

Variation in yield of irrigated grain sorghum (Sorghum bicolor L. Moench) grown during the dry season in tropical Australia was analysed in terms of the amount of photosynthetically active radiation (PAR) intercepted, its efficiency of use in dry matter production and the proportion of dry matter partitioned to grain. Three commercial hybrids (Texas 610SR, Dekalb DK55, Pacific Monsoon) grown under favourable conditions on two soil types (Cununurra Clay and Ord Sandy Loam) yielded similarly, but there was a significant effect of sowing date. Grain yield was highest (9.5 t ha-1 at 14% moisture) in the May sowing, with the lowest yield (7.4 t ha-1) being obtained in the April sowing. Yield was intermediate from a July sowing. Differences in grain yield across the dry season were not related to the amount of PAR intercepted, nor to the efficiency of conversion of intercepted PAR into net aboveground dry matter, but rather to differences in dry matter partitioning. A stable efficiency of conversion of 2.4 g MJ-1 of intercepted PAR was recorded for the entire crop cycle for sorghum crops growing under favourable growing conditions in this environment. This conversion efficiency for a tropical C4 cereal is similar to maximum values, but higher than average conversion efficiencies over the entire crop cycle obtained for temperate C3 cereals growing in temperate regions. Temperature did not affect this conversion efficiency, but had a pronounced effect on the duration of crop development.

The effect of wet season land treatment and nitrogen fertilizer on safflower, linseed, and wheat in the Ord River valley. 3. Wheat

1968 ◽  
Vol 8 (30) ◽  
pp. 72 ◽  
Author(s):  
DF Beech ◽  
MJT Norman ◽  
GA McIntyre
Keyword(s):  
Grain Yield ◽  
Ammonium Sulphate ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Nitrate Nitrogen ◽  
Yield Response ◽  
Research Station ◽  
Soil Nitrate ◽  
Dry Matter Yield ◽  
Wet Season

Gabo wheat was grown under irrigation at Kimberley Research Station in the 1964 dry season following 6 months and 18 months clean and weedy fallows. Four levels of nitrogen fertilizer, as ammonium sulphate and urea, were superimposed. After 6 months clean fallow and 6 and 18 months weedy fallows, grain and dry-matter yield responded to up to 160 lb N an acre. Grain and dry-matter yield after 6 months clean fallow were greater than those after weedy fallows at the same nitrogen fertilizer level. After 18 months clean fallow no significant responses to nitrogen fertilizer were obtained. Mitscherlich curves were fitted to the total dry-matter and grain yield responses to nitrogen fertilizer after the four fallowing treatments. The analysis indicated that 1 part of nitrogen as ammonium sulphate was equivalent to 1.61 (dry matter) or 1.72 (grain) parts of nitrogen as urea. There were strong correlations (r = 0.956 for dry matter; r = 0.917 for grain) between the Mitscherlich constants for individual replicates of the fallow treatments and soil nitrate-nitrogen measured in the 0-3 foot profile before sowing. Soil nitrate-nitrogen, mineralized and accumulated during a summer clean fallow, appears to be almost three times as effective in producing a grain yield response as nitrogen applied as ammonium sulphate at sowing, and almost five times as effective as urea nitrogen at sowing.

Effect of weeds and nitrogen fertiliser on yield and grain protein concentration of wheat

1996 ◽  
Vol 36 (4) ◽  
pp. 443 ◽  
Author(s):  
MG Mason ◽  
RW Madin
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Dry Matter ◽  
Protein Concentration ◽  
The Other ◽  
Grain Protein ◽  
Dry Matter Yield ◽  
Wheat Grain ◽  
Grain Protein Concentration ◽  
Nitrogen Fertiliser

Field trials at Beverley (19911, Salmon Gums (1991; 2 sites) and Merredin (1992; 2 sites), each with 5 rates of nitrogen (N) and 3 levels of weed control, were used to investigate the effect of weeds and N on wheat grain yield and protein concentration during 1991 and 1992. Weeds in the study were grasses (G) and broadleaf (BL). Weeds reduced both vegetative dry matter yield and grain yield of wheat at all sites except for dry matter at Merredin (BL). Nitrogen fertiliser increased wheat dry matter yield at all sites. Nitrogen increased wheat grain yield at Beverley and Merredin (BL), but decreased yield at both Salmon Gums sites in 1991. Nitrogen fertiliser increased grain protein concentration at all 5 sites-at all rates for 3 sites [Salmon Gums (G) and (BL) and Merredin (G)] and at rates of 69 kg N/ha or more at the other 2 sites [Beverley and Merredin (BL)]. However, the effect of weeds on grain protein varied across sites. At Merredin (G) protein concentration was higher where there was no weed control, possibly due to competition for soil moisture by the greater weed burden. At Salmon Gums (G), grain protein concentration was greater when weeds were controlled than in the presence of weeds, probably due to competition for N between crop and weeds. In the other 3 trials, there was no effect of weeds on grain protein. The effect of weeds on grain protein appears complex and depends on competition between crop and weeds for N and for water at the end of the season, and the interaction between the two.

Comparison of rotations in which barley for grain follows woollypod vetch or forage barley

1987 ◽  
Vol 108 (3) ◽  
pp. 609-615 ◽  
Author(s):  
I. Papastylianou ◽  
Th. Samios
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
N Balance ◽  
Dry Matter Yield ◽  
Soil N ◽  
Fertilizer N ◽  
Total Soil ◽  
Using Data ◽  
Total Soil N

SummaryUsing data from rotation studies in which barley or woollypod vetch were included, both cut for hay and preceding barley for grain, it is shown that forage barley gave higher dry-matter yield than woollypod vetch (3·74 v. 2·92 t/ha per year). However, the latter gave feedingstuff of higher nitrogen concentration and yield (86 kg N/ha per year for vetch v. 55 kg N/ha per year for barley). Rainfall was an important factor in controlling the yield of the two forages and the comparison between them in different years and sites. Barley following woollypod vetch gave higher grain yield than when following forage barley (2·36 v. 1·91 t/ha). Rotation sequences which included woollypod vetch had higher output of nitrogen (N) than input of fertilizer N with a positive value of 44–60 kg N/ha per year. In rotations where forage barley was followed by barley for grain the N balance between output and input was 5–6 kg N/ha. Total soil N was similar in the different rotations at the end of a 7-year period.

scholarly journals Effect of sowing time on growth and yield attributes of three mustard cultivars grown in Tidal Floodplain of Bangladesh

2017 ◽  
Vol 14 (2) ◽  
pp. 155-160
Author(s):  
MAR Sharif ◽  
MZ Haque ◽  
MHK Howlader ◽  
MJ Hossain
Keyword(s):  
Grain Yield ◽  
Leaf Area Index ◽  
Dry Matter ◽  
Growth And Yield ◽  
Index Number ◽  
Sowing Time ◽  
Area Index ◽  
Yield Attributes ◽  
Sowing Dates ◽  
1000 Grain Weight

The experiment was conducted at the field laboratory of the Patuakhali Science and Technology University, Patuakhali, Bangladesh during the period from November, 2011 to March 2012 under the tidal Floodplain region to find out optimum sowing time for the selected three cultivars (BARI Sharisha-15, BINA Sharisha-5 and BARI Sharisha-9). There were four sowing dates viz. 30 November, 15 December, 30 December and 15 January. Significant variations due to different sowing dates were observed in plant height, total dry matter, leaf area index, number of siliqua plant-1, seeds silique-1, 1000-grain weight, grain yield and HI. Results showed that the highest grain yield (1.73 t ha-1) was obtained from the first sowing (30 November) with BINA Sharisha-5 and it was significantly different from the yields of all other combination.J. Bangladesh Agril. Univ. 14(2): 155-160, December 2016

scholarly journals Upland rice yield as affected by Brachiaria coverage management

2015 ◽  
Vol 19 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Adriano S. Nascente ◽  
Luís F. Stone ◽  
Cleber M. Guimarães
Keyword(s):  
Grain Yield ◽  
Cover Crop ◽  
Dry Matter ◽  
Rice Yield ◽  
Upland Rice ◽  
Proper Time ◽  
Sowing Date ◽  
Rice Grain ◽  
Brachiaria Ruziziensis ◽  
Tillage System

An important point in no-tillage system is the time between cover crop glyphosate desiccation and rice sowing. This study aimed to verify the effect of Brachiaria ruziziensis management time before rice sowing on rice yield and its components. The experiment was conducted under greenhouse conditions and consisted of four types of B. ruziziensis management: with Brachiaria and with herbicide (WBWH), without Brachiaria shoots and with herbicide (NBWH), without Brachiaria shoots and without herbicide (NBNH), and with Brachiaria and without herbicide (WBNH), at four times: 30, 20, 10, and 0 days, preceding the rice sowing. The amount of B. ruziziensis dry matter increased as the management was done closer to the rice sowing date. The WBWH and WBNH managements (this one causes the lowest rice grain yield) must be done 30 days before rice sowing; while NBWH management must be done ten or more days before rice sowing. On the other hand, NBNH management (this one favors the best rice grain yield) can be done until rice sowing day. Despite some reduction in rice yield caused by the B. ruziziensis management, when it was done at the proper time the rice grain yield was similar to the control (without Brachiaria sowing and without herbicide application).

Effects of Planting Density on Leaf Area and Productivity of Two Maize Cultivars in Nigeria

1982 ◽  
Vol 18 (1) ◽  
pp. 93-100 ◽  
Author(s):  
S. U. Remison ◽  
E. O. Lucas
Keyword(s):  
Grain Yield ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Dry Matter ◽  
Plant Population ◽  
Planting Density ◽  
Dry Matter Yield ◽  
Area Index ◽  
Positive Correlation ◽  
Maize Cultivars

SUMMARYTwo maize cvs, FARZ 23 and FARZ 25, were grown at three densities (37,000, 53,000 and 80,000 plants/ha) in 1979 and 1980. Leaf area index (LAI) increased with increase in plant population and was at a maximum at mid-silk. Grain yield was highest at 53,000 plants/ha. There was no relation between LAI and grain yield but there was a positive correlation between LAI and total dry matter yield.

scholarly journals IMPACT OF PLANT GROWTH INHIBITORS ON THE GROWTH AND YIELD OF SORGHUM

2021 ◽  
Vol 52 (6) ◽  
pp. 1431-1440
Author(s):  
N. M. Abood ◽  
E. M. SHALAL ◽  
M. I. HAMDAN
Keyword(s):  
Plant Growth ◽  
Dry Matter ◽  
Agricultural Research ◽  
Block Design ◽  
Growth And Yield ◽  
Control Treatment ◽  
Research Station ◽  
Dry Matter Yield ◽  
Growth Inhibitors ◽  
Plant Growth Inhibitors

Field experiment was carried out during the spring and fall seasons of 2019 at the Abu Ghraib Research Station of the Agricultural Research Office/ Ministry of Agriculture, was aimed to investigate the effect of plant growth inhibitors on growth and yield of several sorghum varieties .Randomized Complete Block Design within split plot arrangement with three replications was used. The main plot consists of three growth inhibitors (Cycocel, Ethiphon, and Mebiquat), which were added at stages six and eight leaf stage, in addition to the control treatment (distilled water only), the sub plot was included three cultivars (Mabrouk, Buhooth 70 and Giza 113). The results showed in both seasons significant interaction between cultivars and growth inhibitors in most of the studied traits. The plants of the variety Giza 113 sprayed with Ethiphon recorded the lowest period of reaching physiological maturity, the highest average dry matter yield, and the highest weight of 1000 grains (89.00 days, 17.32 ton ha-1, and 39.33 gm) respectively. The same variety recorded the highest content of chlorophyll in the leaves and the highest grain yield due to the effect of Mebiquat (49.50 spad, 3.93 ton ha-1. The cultivar Buhooth 70 with the effect of Cycocel achieved the highest average of dry matter yield of 33.27 ton ha-1.

Sowing time and tillage practice affect chickpea yield and nitrogen fixation. 1. Dry matter accumulation and grain yield

1996 ◽  
Vol 36 (6) ◽  
pp. 695 ◽  
Author(s):  
CP Horn ◽  
CJ Birch ◽  
RC Dalal ◽  
JA Doughton
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Grain Legume ◽  
Wheat Crop ◽  
Late Winter ◽  
Dry Matter Accumulation ◽  
Dry Matter Yield ◽  
Tillage Practice ◽  
Management Options ◽  
Sowing Time

Mean protein concentrations in wheat (Triticum aestivum) on the Darling Downs of southern Queensland have fallen below 10% in recent years, preventing farmers from obtaining 'Prime Hard' status (13.0%) for their wheat crop. Two management options, for improving this situation are applications of nitrogenous fertiliser in a wheat monoculture or inclusion of a legume in rotation with wheat. Long-term trials at Warra, on the western Darling Downs, resulted in the selection of chickpea (Cicer arietinum) as a useful grain legume cash crop with potential for improvement of its nitrogen (N) fixing ability through management. This 2-year study examined the effect of sowing time and tillage practice on dry matter yield, grain yield, N accumulation and N2 fixation in chickpea and the subsequent soil N balance. There were 3 sowing times during autumn and winter of each year using conventional tillage (CT). Zero tillage (ZT) was introduced after the first crop for all sowing times. Greater total dry matter yield and grain yield (4.18-5.95 and 1.63-2.25 t/ha, respectively) resulted from sowing in autumn or early winter than from sowing in late winter (3.39-3.86 and 0.97-1.22 kg/ha, respectively). The effects of tillage practice were variable, depending on growth stage. At harvest, ZT plots produced greater total dry matter yield (4.20 t/ha) and grain yield (1.94 t/ha) than CT plots (3.01 and 1.29 t/ha, respectively), whereas at the time of maximum dry matter, yield was higher under CT for autumn sowings, and under ZT for winter sowings.

A preliminary assessment of the adaptation of semi-dwarf wheat varieties to the Ord River valley

1968 ◽  
Vol 8 (32) ◽  
pp. 349 ◽  
Author(s):  
DF Beech ◽  
MJT Norman
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
River Valley ◽  
Research Station ◽  
Grain Production ◽  
Lower Yield ◽  
Preliminary Assessment ◽  
Wheat Varieties ◽  
Dwarf Wheat ◽  
General Response

In the 1966 dry season at Kimberley Research Station in the Ord River valley, the performance under irrigation of three semi-dwarf wheat varieties was compared with that of two Australian varieties at three times of sowing and three levels of nitrogen fertilizer in factorial combination. The general response of the semi-dwarf varieties to time of sowing did not differ from that of the Australian varieties. All varieties, at 0 and 160 lb an acre N, gave higher grain yields when sown in late May than when sown in mid-April or late June. At 320 lb an acre N, each variety gave approximately the same grain yield whether sown in mid-April or late May, with a lower yield from late June sowings. All varieties increased in grain yield between 0 and 160 lb an acre N, but when nitrogen was increased from 160 to 320 lb an acre, the yield of the Australian varieties declined while that of the semi-dwarf varieties either increased or remained approximately the same. As a group, the semi-dwarf varieties differed only from the Australian varieties in their ability to use a high uptake of nitrogen for grain production, in their greater harvest index, 2nd in their lower grab nitrogen content. The highest yields, 75-80 bushels an acre, were obtained from Mexico 120 and Chile 1B.

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