A comparison of twenty Digitaria accessions at four sites in south-east Queensland

1978 ◽  
Vol 18 (95) ◽  
pp. 817 ◽  
Author(s):  
RW Strickland ◽  
KP Haydock
Keyword(s):  
Nutritional Quality ◽  
Dry Matter ◽  
Potassium Content ◽  
Dry Matter Production ◽  
Animal Nutrition ◽  
North West ◽  
Matter Production ◽  
Cutting Frequency ◽  
Sodium And Potassium

Dry matter production and quality of 20 Digitaria accessions, cut four- and eight-weekly, were compared at four sites in south-east Queensland differing in soils, rainfall and frost incidence over the period 1971-73. The wettest, least frosted site was at Beerwah (70 km north of Brisbane) and the two driest, most frosted sites were at Narayen (480 km north-west of Brisbane). Samford (near Brisbane) was intermediate in terms of rainfall and frost incidence. Dry matter production over the two years varied markedly with site, accession and cutting frequency, and there were interactions between all three. D. smutsii (CPI 38869) was well adapted to all sites and Narayen in particular, O. macroglossa (CPI 16267) was specifically adapted to Beerwah, and D. milanjiana (CPI 41 192) and the two D. smutsii accessions (CPI 38869,16778A) to Samford. Accessions of D. milanjiana, O. pentzii and D. setivalva also performed well at Narayen. Accessions differed in resistance to fire, frost, rust and insects, and in nutritional quality. However, all were adequate for ruminant nitrition. An examination of the quality of the accessions as standover winter feed at Narayen showed that frost lowered digestibility, and the sodium and potassium content of the herbage, but not to the level where animal nutrition would be affected.

scholarly journals Content of inorganic solutes in lettuce grown with brackish water in different hydroponic systems

2017 ◽  
Vol 21 (3) ◽  
pp. 150-155 ◽  
Author(s):  
Alide M. W. Cova ◽  
Fabio T. O. de Freitas ◽  
Paula C. Viana ◽  
Maria R. S. Rafael ◽  
André D. de Azevedo Neto ◽  
...  
Keyword(s):  
Fresh Water ◽  
Nutrient Solution ◽  
Brackish Water ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Matter Production ◽  
Water Plant ◽  
Hydroponic Systems ◽  
Inorganic Solutes

ABSTRACT The objective of this study was to evaluate the growth and accumulation of ions in lettuce grown in different hydroponic systems and recirculation frequencies. The experimental design was randomized blocks with 8 treatments and 4 replicates. The evaluated hydroponic systems were Nutrient Flow Technique (NFT) and an adapted Deep Flow Technique (DFT), the latter with recirculation frequencies of 0.25, 2 and 4 h. Both systems used fresh water and brackish water. Plant growth, accumulation of inorganic solutes (Na+, K+, Cl- and NO3-) and the correlation between dry matter production and Na+/K+ and Cl-/NO3- were evaluated. The salinity of the water used to prepare the nutrient solution caused decrease in growth and K+ and NO3- levels, and increased contents of Na+ and Cl- in the plants. When using fresh water the highest dry matter production was obtained in the NFT system. In case of brackish water the adapted DFT system increased the production, in relation to NFT system (at same recirculation frequency: 0.25 h). It was found that the choice of the type of hydroponic system and recirculation interval for the cultivation of lettuce depends on the quality of the water used to prepare the nutrient solution.

scholarly journals Produksi dan Kandungan Nutrien Beberapa Varietas Sorgum Hybrid dengan Jarak Tanam Berbeda sebagai Sumber Pakan

2019 ◽  
Vol 17 (1) ◽  
pp. 1-5
Author(s):  
Hajar Hajar ◽  
Luki Abdullah ◽  
Didid Diapari
Keyword(s):  
Biomass Production ◽  
Crude Protein ◽  
Dry Matter ◽  
Block Design ◽  
Plant Production ◽  
Crude Fiber ◽  
Dry Matter Production ◽  
Fresh Biomass ◽  
Matter Production

Sorghum feed is a type of cereal plant that has potential use as animal feed or forage. The reseach aim was to evaluate production and nutritional quality of some sorghum hybrid varieties, and determined the optimal spacing of sorghum plants. This research was arranged in a factorial randomized block design with 6 treatments and four replications. The first factor was the varieties of 12FS9006, 13FB7001 and 12S49001. The second factor was space of 25x25cm and 25x40 cm. The variables were fresh and dry matter of biomass production and also nutrient (ash, crude fiber, crude protein, Neutral Detergen Fiber and Acid Detergen Fiber. Sorghum varieties had significant effect (p<0.05) to fresh biomass production, dry matter biomass production, ash, crude ϐiber and crude protein). The space had a significant effect (p<0.05) to the dry matter production of biomass and crude fiber. The average variety of fresh biomass plant production was (18.90 tons ha-1), dry matter production of biomass was (4 ton ha-1), ash (5.51%), crude ϐiber (30.90%) and crude protein (8.45%). The average dry matter production was 4.34 tons ha-1 and crude ϐiber 29.96%. It can be concluded that the highest production and the best nutrient quality of sorghum hybrid was obtained at the sorghum variety of 12S49001, the distance of 25x25cm was the best plant space for hybrid sorghum production

scholarly journals Respuesta del pasto Bothriochloa saccharoides ([Sw.] Rydb.) a diferentes intensidades de sombra simulada en el valle cálido del Magdalena en el Tolima (Colombia).

2010 ◽  
Vol 12 (1) ◽  
pp. 42 ◽  
Author(s):  
Roberto Piñeros ◽  
Jairo Mora Delgado ◽  
Vilma A. Holguín
Keyword(s):  
Nutritional Quality ◽  
Dry Matter ◽  
Dry Season ◽  
Good Choice ◽  
Tree Cover ◽  
Dry Matter Production ◽  
Control Treatment ◽  
Silvopastoral Systems ◽  
Wet Season ◽  
Matter Production

<p>Los sistemas silvopastoriles requieren de forrajes que soporten sombreamiento y buena calidad nutricional. El objetivo del estudio fue analizar indicadores agronómicos, producción de biomasa y calidad nutricional del pasto Vidal bajo simuladores de sombra, con porcentajes de 30%, 50% y 0% (control) de penumbra, este último actuando como control. el estudio se realizó en la Hacienda “La estrella”, ubicada en el municipio de Venadillo, Tolima. se realizaron mediciones de producción de biomasa a 52 días después de la siembra en dos épocas diferentes (húmeda y seca). se encontró una producción de materia seca en época húmeda de 3,47; 3,0 y 5,56 t ha-1 y en época seca de 2,33; 2,44 y 2,5 t ha-1 para coberturas de 50%, 30% y el control, respectivamente y no se encontraron diferencias significativas (P≤0,05) para esta variable entre las diferentes coberturas, lo cual sugiere un potencial del pasto para implementarse en sistemas agroforestales que presentan coberturas arbóreas moderadas. Con respecto a los indicadores agronómicos, la altura de la planta presentó diferencias significativas (P≤0,05) de los tratamientos 30% y 50% con respecto al tratamiento control, principalmente en la época seca. en términos nutricionales, los análisis de proteína en época húmeda fueron de 11,41%, 10,57% y 8,36% y en época seca de 9,61%, 10,51% y 12,95% para coberturas de 50%, 30% y control, respectivamente; el análisis de digestibilidad indica valores para la época húmeda de 70,02%; 71,92% y 67,77% y para época seca de 69,61%; 68,31% y 68,15% para coberturas de 50%, 30% y control, respectivamente. estos resultados demuestran un comportamiento productivo similar en las diferentes coberturas, lo cual lo hace un pasto tolerante a la sombra y una buena opción para la utilización en sistemas silvopastoriles.</p><p> </p><p><strong>Response of Bothriochloa saccharoides ([Sw.] Rydb.) grass to different simulated shade intensities in the warm valley of Magdalena in the Department of Tolima (Colombia).</strong></p><p>Silvopastoral systems must withstand shading and have good nutritional quality. This study aimed to analyze dry matter production, agronomic indicators and nutritional quality in Bothriochloa saccharoides grass, under simulated shade conditions: 30%; 50% and 0% sunlight, the last acting as control. This study was carried out at the "La estrella” farm, located in the municipality of Venadillo, Tolima. Biomass production measurements were taken 52 days after sowing, in both wet and dry season. Dry matter production in the wet season was 3.47, 3.0 and 5.56 t ha-1 and in the dry season 2.33, 2.44 and 2.5 t ha-1, for the simulated covers of 50%, 30% and the control, respectively and no significant differences (P≤0.05) were found for the variable in these treatments, which potentially suggests the use of this grass in silvopastoral systems with moderate tree cover. We observed significant differences (P≤0.05) among of the heights of the plants between 30% and 50% simulated shade compared to the control treatment, mainly in the dry season. In nutritional terms, protein results were 11.41%, 10.57% and 8.36% in the wet season and 9.61%, 10.51% and 12.95% in the dry season under the simulated shade of 50%, 30% and the control, respectively. Digestibility analysis indicated values for the wet season of 70.02%, 71.92% and 67.77% and for the dry season of 69.61%, 68.31% and 68.15% under shades of 50%, 30% and the control, respectively. These results revealed a similar productive performance under different simulated shades conditions, which makes this grass tolerant to shade conditions and a good choice for use in silvopastoral systems.</p>

The effect of differences in intensity and frequency of defoliation on the growth of Sirolan phalaris in the field

1989 ◽  
Vol 40 (2) ◽  
pp. 345 ◽  
Author(s):  
MJ Hill ◽  
RW Watson
Keyword(s):  
Dry Matter ◽  
Dry Matter Production ◽  
Bud Development ◽  
Phalaris Aquatica ◽  
Matter Production ◽  
Cutting Frequency ◽  
Cutting Interval ◽  
Tiller Density ◽  
Factor Governing

A two-year old sward of Phalaris aquatica cultivar Sirolan was cut at 2-, 4-, 6- or 12-week intervals and at heights of 2 or 7 cm over two 12-week cycles from June to November 1986. Defoliation treatments were split and 100 kg ha-1 of nitrogen was applied to half the plot at the beginning of each cycle. Tiller density and dry matter production were measured throughout winter and spring of 1986, and in two 6-week regrowth periods in 1987.During winter, high cutting always gave less harvested dry matter than low cutting. In spring, the regression lines relating cutting frequency to cumulative harvested dry matter crossed over at a frequency of about 5 weeks. Below this frequency high cutting yielded more harvested dry matter than low cutting. High cutting gradually changed sward appearance in winter, resulting in better yields at later harvests. At the conclusion of spring cutting, there were more dead tillers on plots cut at 6- and 12-week intervals than on those cut every 2 or 4 weeks, while numbers of live tillers increased progressively as cutting interval rose from 2 to 12 weeks. Regrowth in autumn 1987 was much better on plots cut every 12 weeks than on other plots, primarily owing to the greater vigour of individual tillers, but also owing to higher tiller numbers. The timing of defoliation in spring appeared to be the most important factor governing crown bud production and regrowth in the following season. Spelling in spring is recommended to permit reproductive and crown bud development in Sirolan.

scholarly journals Influence of volume container in the production of rhizomes in Seemannia (Gesneriaceae)

2019 ◽  
Vol 25 (3) ◽  
pp. 287-292
Author(s):  
Paula Bologna ◽  
Santiago Stancanelli
Keyword(s):  
Statistical Analysis ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Perennial Plant ◽  
Conventional Management ◽  
Good Production ◽  
Matter Production ◽  
Herbaceous Perennial ◽  
Dry Matter Weight

Abstract Seemannia Regel belongs to the Gesnereacieae family. It is an herbaceous perennial plant with colorful and brilliant flowers that produces fleshy scaly rhizomes with axillary dormant buds. The objective of this study was to evaluate the effect of the volume of the container in the production and the quality of the rhizomes. Plants of a select hybrid of Seemnania were used. Three volume of container were tested: v1 of 1 L, v2 of 1,5 L and v3 of 2 L. Plants were cultivated in the containers following a conventional management. Dry matter, production (number and weight of rhizomes) and quality of the rhizomes were recorded. The rhizomes were classified into four qualities (A, B, C, D) according to the length and width, and the number of the scales. All data was subject to statistical analysis. Dry matter, weight and number of rhizomes increased as the volume of container increased. The v3 container recorded the highest values for these three parameters. Major volume of container, major was the development of vegetative mass and consequently the number and the weight of rhizomes were higher. In regard to the qualities of the rhizomes, v1 and v3 treatments had a better proportion of A rhizomes (the bigger size) compared to v2 treatment. The knowledge of the rhizome quality can be useful to the growers in order to select the best rhizome size for a good production. The v3 treatment recorded the highest number of A rhizomes, that we consider a good quality, because it has the bigger size with more scales and consequently more propagules.

scholarly journals Translocation and bioconcentration of trivalent chromium in green beans grown on bioponics

2020 ◽  
Vol 10 (7) ◽  
pp. 708
Author(s):  
Loubna Azariz ◽  
Mohamed Fekhaoui ◽  
Souad Elblidi ◽  
Ahmed Yahyaoui
Keyword(s):  
Nutrient Solution ◽  
Crop Production ◽  
Dry Matter ◽  
Growth Parameters ◽  
Trivalent Chromium ◽  
Dry Matter Production ◽  
Phaseolus Vulgaris L ◽  
Green Beans ◽  
Matter Production

the increasing number of cases of soil contamination by trace elements have affected crop production, and represents a risk threatening the quality of our food products. Some of these contaminants, such as trivalent chromium Cr (NO<sub>3</sub>)<sub>3,</sub> which is similar to micronutrients, can, therefore, be absorbed by plants and whose phytotoxicity has long been considered negligible, and largely underestimated. The purpose of this work was to study the transfer of trivalent chromium from nutrient solution to green beans <em>Phaseolus vulgaris L</em> grown on bioponics; the contamination responses were determined in terms of growth parameters, yield, and dry matter production; at various concentrations (5, 10 and 20 ppm). Chromium trivalent effects have also been studied in tissues plant. Results showed that the absorption of trivalent chromium from the nutrient solution and its translocation to the aerial tissues plants had no adverse effects on growth parameters, and also on beans yield. Results also showed that chromium accumulates in roots rather than in the other tissues, and did not reduce the dry matter production, in terms of translocation and bioconcentration. The transfer factor is low and green beans cannot be defined as a hyperaccumulator of chromium.

Sign in / Sign up

Export Citation Format

Share Document