Preliminary experiments on the growth of kenaf (Hibiscus cannabinus) for paper pulp production in the Ord Irrigation Area, Western Australia

1978 ◽  
Vol 18 (90) ◽  
pp. 97 ◽  
Author(s):  
IM Wood
Keyword(s):  
Western Australia ◽  
Dry Matter ◽  
Ground Level ◽  
Hibiscus Cannabinus ◽  
Row Spacing ◽  
Paper Pulp ◽  
Seeding Rate ◽  
Irrigation Area ◽  
Above Ground Level ◽  
Pulp Production

The results of agronomic studies with kenaf (Hibiscus cannabinus) grown for paper pulp production in the Ord Irrigation Area, Western Australia, are described. There were two experiments: one with cv. C2032 in which growth of the crop was studied at four seeding rates, two row spacings and four times of sowing, and a second in which the growth of cv. Guatemala -4 was followed at two times of sowing. It was demonstrated that year-round growth could be sustained with irrigation. A peak dry-matter yield of 25.6 tonnes ha-1 was achieved after 240 days from a July sowing of Guatemala -4. The yields of stem material from cv. C2032 increased as seeding rate was increased from 5 to 20 kg ha-1. Dry matter yields were higher with a narrow row spacing than with a wide row spacing; total dry matter production from crops sown on 1.5 m beds grown with 5 rows spaced 20 cm apart was 17 per cent higher than from single rows sown on 1 m ridges. The effect of row spacing was mainly in the yield of tops and foliage and there was no significant effect on stem yields. Data are given of the uptake of essential nutrients by kenaf crops. which illustrate the large quantities of nutrients removed by the crop. Ratooning of kenaf is shown to be possible provided it is cut at least 10 cm above ground level. The percentage of plants recovering after cutting increased as the height of cut was increased from 10 cm to 30 cm above ground level.

Growth and oil production of lemongrass (Cymbopogon citratus) in the Ord Irrigation Area, Western Australia

1977 ◽  
Vol 17 (85) ◽  
pp. 301 ◽  
Author(s):  
DF Beech
Keyword(s):  
Water Stress ◽  
Western Australia ◽  
Dry Matter ◽  
Oil Production ◽  
Dry Season ◽  
Oil Yield ◽  
Cymbopogon Citratus ◽  
Irrigation Area ◽  
Effect Of Water

Experiments with irrigated lemongrass (Cymbopogon citratus) have shown that high oil yields can be obtained in the Ord Irrigation area, Western Australia. The highest oil yield of 419 1 ha-1 over a 360 day period was obtained when the plants were cut at 60 day intervals and at a height of 20 cm. Longer intervals and higher cutting heights gave lower oil yields, although in some cases, fresh and dry matter yields were increased. Studies on the effect of water stress showed that time between irrigations in the dry season should not be more than ten days if oil yields are to be maintained. Wilting of cut lemongrass in the dry season was shown to result in a loss of oil, with losses increasing with the duration of wilting up to 11 hours. Under irrigated conditions, lemongrass removed large quantities of nutrients, particularly potassium. Over the 360 day period, maximum amounts of N, P and K removed were 186, 26 and 384 kg ha-1 respectively.

Response of vetch (Vicia spp.) to plant density in south-western Australia

2002 ◽  
Vol 42 (8) ◽  
pp. 1043 ◽  
Author(s):  
M. Seymour ◽  
K. H. M. Siddique ◽  
N. Brandon ◽  
L. Martin ◽  
E. Jackson
Keyword(s):  
Seed Yield ◽  
Western Australia ◽  
Dry Matter ◽  
Field Experiments ◽  
Plant Density ◽  
Yield Potential ◽  
Dry Matter Production ◽  
Vicia Sativa ◽  
Seeding Rate ◽  
Matter Production

The response of Vicia sativa (cvv. Languedoc, Blanchefleur and Morava) and V. benghalensis (cv. Barloo) seed yield to seeding rate was examined in 9 field experiments across 2 years in south-western Australia. There were 2 types of field experiments: seeding rate (20, 40, 60, 100 and 140 kg/ha) × cultivar (Languedoc, Blanchefleur, and Morava or Barloo), and time of sowing (2 times of sowing of either Languedoc or Blanchefleur) × seeding rate (5,�7.5, 10, 15, 20, 30, 40, 50, 75 and 100 kg/ha).A target density of 40 plants/m2 gave 'optimum' seed yield of vetch in south-western Australia. In high yielding situations, with a yield potential above 1.5 t/ha, the 'optimum' plant density for the early flowering cultivar Languedoc (85–97 days to 50% flowering) was increased to 60 plants/m2. The later flowering cultivar Blanchefleur (95–106 days to 50% flowering) had an optimum plant density of 33 plants/m2 at all sites, regardless of fitted maximum seed yield. Plant density in the range 31–38 plants/m2 was found to be adequate for dry matter production at maturity of Languedoc and Blanchefleur. For the remaining cultivars Barloo and Morava we were unable to determine an average optimum density for either dry matter or seed yield due to insufficient and/or inconsistent data.

scholarly journals Effect of row spacing and seeding rate on seed and dry matter yield of red clover (Trifolium pratense L)

2011 ◽  
Vol 48 (1) ◽  
pp. 155-160
Author(s):  
Rade Barac ◽  
Gojko Duronic ◽  
Djura Karagic ◽  
Sanja Vasiljevic ◽  
Branko Milosevic
Keyword(s):  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Row Spacing ◽  
Dry Matter Yield ◽  
Seeding Rate ◽  
Trifolium Pratense L

scholarly journals Effect of Nitrogen Fertilizer and Inter Row Spacing on Herbage Yield and Some Yield Components (Number of Leaves and Number of Tillers per Plant) of Rhodes Grass (Chloris gayana Tan) in the Dry Sub Humid Zone of Sokoto Nigeria

2020 ◽  
pp. 10-21
Author(s):  
M. Mabu Isa ◽  
J. Ibrahim ◽  
Sani Usman Bah
Keyword(s):  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Ground Level ◽  
Plant Sample ◽  
Row Spacing ◽  
Dry Matter Yield ◽  
Rhodes Grass ◽  
Herbage Yield ◽  
Number Of Leaves

A field experiment was conducted during the 2016 and 2017 rainy seasons at Centre for Agriculture and Pastoral Research (CAPAR) of the Usmanu Danfodiyo University Sokoto, Nigeria to study the effect of nitrogen fertilizer and inter-row spacing on herbage yield and some yield parameters of Rhodes grass. A factorial combination of five fertilizer levels (0, 100, 120, 140 and 160 kgNha-1) and three inter row spacing (30, 50 and 70 cm) were used, making fifteen treatments combinations, which were laid out in a RCBD replicated four times. Determination of herbage dry matter yield at the end of 12 weeks post planting was carried out using a 0.25 m2 (0.5 m x 0.5 m) area metallic frame (Quadrat). The herbage was harvested at 5 cm above ground level using hand Sickle from the four plots for each treatment. The samples collected ware oven dried for the determination of dry matter yield, while determination of number of leaves and number of tillers per plant was done by counting the numbers of individual leave and tillers of each of the representative plant sample. The result revealed that, Application of 160 KgNha-1 generally produced higher (P < 0.05) dry matter yield, number of leaves and number of tillers compared to the rest of the treatment, There was no significant (P > 0.05) effect of inter row spacing in both 2016, 2017 and the years combined on herbage dry matter yield, however significant (P < 0.05) effect of spacing was observed in 2016, 2017 and the years combine on the numbers of leaves and numbers of tiller. Inter-row spacing of 70cm showed superiority among the treatments in the herbage yield compositions investigated compared to 50 and 30cm spacings.

The effect of carrier and rate of nitrogen application on the growth and oil production of lemongrass (Cymbopogon citratus) in the Ord Irrigation Area, Western Australia

1990 ◽  
Vol 30 (2) ◽  
pp. 243 ◽  
Author(s):  
DF Beech
Keyword(s):  
Leaf Area ◽  
Western Australia ◽  
Dry Matter ◽  
N Recovery ◽  
Clay Loam ◽  
Nitrogen Application ◽  
Cymbopogon Citratus ◽  
Area Index ◽  
Irrigation Area ◽  
Apparent N Recovery

Lemongrass (Cymhopogon citrarus) was grown under irrigation in the Ord River Irrigation Area, Western Australia, on a sandy clay loam, to investigate its response to nitrogen (N) applications ranging from 0 to 1200 kg N/ha.year. Urea and ammonium sulphate were compared and they were not significantly different as N carriers. Six harvests were taken over a 390-day period, after an initial harvest 7 months after planting out. A curvilinear response was obtained over all N treatments with a linear response up to 600 kg/ha. At this level, fresh herbage, dry matter and oil yields for the 390 days were 115 t/ha, 28.4 t/ha and 433 L/ha, respectively. Higher N applications also increased tiller number and leaf area index, while depressing specific leaf area and oil content. The unharvested portion of lemongrass (i.e. stools, rhizomes and roots) decreased from 44 to 27% of total dry matter with additional N. The amount of N, P and K in the harvested herbage increased from 51, 8 and 121 kg/ha to 276, 30 and 357 kg/ha, respectively, for the 0 and 900 kg N/ha.year treatments. The N, P and K content of the unharvested portion was considerably less with 28, 6 and 27 kg/ha for 0 kg N/ha.year and 75, 9 and 32 kg/ha at the 900 kg N/ha.year level, respectively. The highest apparent N recovery was 31% at 600 kg N/ha.year and decreased with higher N applications. Considerable seasonal variation occurred within the 6 harvests for all components measured.

scholarly journals PRODUCTIVITY OF ALFALFA DEPENDENT FROM VARIETY FEATURES AND HYDRO-THERMAL CONDITIONS OF THE RIGHT BANK FOREST STEPPE

2020 ◽  
pp. 143-155
Author(s):  
Nadiya Hetman ◽  
Maksym Kvitko
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Growing Season ◽  
Matter Content ◽  
Forest Steppe ◽  
Row Spacing ◽  
Dry Matter Content ◽  
Seeding Rate ◽  
Green Mass ◽  
The Right

The article presents the results of studies of the effect of seeding rates and row spacing on the forage productivity of different alfalfa ecotypes when mowing grass in the flowering stage. In the soil-climatic conditions of the right bank forest-steppe irrespective of the effect of abiotic and biotic factors during the growing season, high adaptability of alfalfa of the southern ecotype of the Angelica variety was established, which formed a stable crop of green mass at the optimal seeding rate (8,0 million/ha) and width 12,5 cm. For an average of two years of grass use, the varieties of alfalfa Rosana and Angelica provided a yield of green mass of 62,96-64,02 t/ha, which was 11,1-14,9% higher than for sowing with the norm of sowing 4,0 million/ha, and 6,3-7,1% with row spacing half (25,0 cm). It was found that in two years of use of alfalfa Angelica variety had higher dry matter content, compared with the variety of Rosana and were respectively 23,05 and 22,98%. There was a gradual decrease in the dry matter content with a thickening of the herbage in the Rosana variety from 23,32 to 22,72% and from the Angelica variety from 23,31 to 22,84%. As the row spacing increased from 12,5 to 25,0 cm, the solids content increased by 0,28-0,62%, or 22,74-22,84 and 23,12-23,36%. The crude protein content in the dry matter of alfalfa plants of both varieties differed by slopes and years of herb use. The highest content of crude protein was obtained in the dry matter for sowing with a row spacing of 12,5 cm, which averaged 21,10% in the Rosana variety and 20,23% in the Angelica variety or increased by 0,79-0,87%, compared to the row spacing of 25,0 cm. Thus, irrespective of the hydrothermal conditions during the growing season of the studied varieties of alfalfa sowing Rosana and Angelika, the average yield of dry matter at the level of 13,64-13,93 and 2,76-2,88 t/ha of crude protein at the width of row 12,5 cm. Key words: alfalfa, variety, flowering start, crude protein, dry matter, yield, green mass.

Effects of Seeding Rate on the Dry Matter Yield and Nutritive Value of Fall‐Grown Oat

cftm ◽  
2016 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Wayne K. Coblentz ◽  
Jason S. Cavadini
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Dry Matter Yield ◽  
Seeding Rate
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