scholarly journals Effects of dairy shed effluent dry matter content on ammonia and nitrous oxide emissions from a pasture soil

2018 ◽  
Vol 156 (9) ◽  
pp. 1070-1078
Author(s):  
T. J. Clough ◽  
N. Balaine ◽  
K. C. Cameron ◽  
S. O. Petersen ◽  
S. G. Sommer
Keyword(s):  
Nitrous Oxide ◽  
Dry Matter ◽  
Emission Rate ◽  
Soil Surface ◽  
Land Application ◽  
Matter Content ◽  
Nitrous Oxide Emissions ◽  
Dry Matter Content ◽  
Total N ◽  
And Control

AbstractAtmospheric emissions of nitrogen (N) from New Zealand dairy farms are significant but have the potential to be affected by manure management prior to land application. The current work examined whether reducing cattle manure dry matter (DM) from 0.16 high DM (HDM) to 0.06 low DM (LDM), to enhance infiltration and reduce ammonia (NH3) emissions when applied to grassland, would affect nitrous oxide (N2O) emissions. Pasture was cut, simulating grazing, and either amended with HDM (173 kg N/ha) or LDM manure (48 kg N/ha) or left unamended. Ammonia emissions from HDM manure were higher than from LDM manure, as a flux or as a percentage of total ammoniacal nitrogen (TAN, i.e. NH3 + NH4+) applied, due to more TAN being retained near the soil surface and the higher soil surface pH under HDM manure treatment. Cumulative N2O emissions over 37 days from HDM plots were higher than from the control but not from the LDM plots. After 5 days, the daily N2O emission rate was larger from HDM plots than from LDM and control plots. The N2O fluxes from LDM and HDM treatments did not differ, either as a proportion of TAN applied or as a proportion of total-N applied. Increasing DM contributed to reductions in both oxygen (O2) availability and relative gas diffusivity, and thus potentially N2O production. Under the conditions of the current study, lower manure DM content reduced NH3 emissions but did not increase cumulative losses of N2O.

Effect of cereal and pea monocultures and combinations and silage additives on whole-crop cereal silage nutritive and fermentation characteristics

2013 ◽  
Vol 53 (5) ◽  
pp. 427 ◽  
Author(s):  
J. L. Jacobs ◽  
G. N. Ward
Keyword(s):  
Lactic Acid ◽  
Dry Matter ◽  
Nutritive Value ◽  
Matter Content ◽  
Efficient Production ◽  
Dry Matter Content ◽  
Total N ◽  
Winter Cereals ◽  
Fermentation Parameters ◽  
Silage Additives

The efficient production and utilisation of home-grown feed is considered one of the key factors that underpins the profitability of dairy systems in southern Australia. The use of winter forage cereals for grazing and silage provides an opportunity to achieve high dry matter yields over the winter and spring period. However, questions remain on the nutritive value of whole-crop cereal silage and its subsequent use as a production feed in livestock systems. This experiment examined the nutritive characteristics of winter wheat, triticale, forage peas and bi-crops of cereals and peas sown at different proportions, cut for silage at the soft dough growth stage of the cereals and their subsequent silage nutritive characteristics and fermentation patterns when ensiled with and without bacterial inoculant additives over 2 consecutive years. The estimated metabolisable energy (ME) (Year 1) and crude protein (CP) (Years 1 and 2) concentrations of the forage pea before and after ensiling were higher (P < 0.05) than all other forages in both years. The cereal–pea mixes had similar estimated ME values to the cereal monocultures both before harvesting and as silage, although there were significant improvements in CP concentration at the higher rates of pea inclusion. All resultant silages were well fermented as indicated by low pH, low proportions of total N as ammonia-N and high lactic acid concentrations. There were marked differences in the proportions of lactic acid and acetic acid in the pea silages between years and this is likely a result of dry matter content differences at ensiling. There was no effect of silage additives on resultant silage nutritive characteristics or fermentation parameters indicating that well fermented silage can be achieved without the additional cost of using a silage additive. This study has indicated that forage peas can be ensiled with winter cereals and produce silages that have higher CP concentrations than cereal silage but with similar fermentation parameters. Furthermore, this experiment has highlighted the potential of growing a monoculture of forage peas for ensiling with the resulting silage having higher estimated ME and CP concentrations.

scholarly journals Diurnal variations in the excretion of faeces and urine by sheep fed once daily or at hourly intervals

1966 ◽  
Vol 20 (4) ◽  
pp. 757-764 ◽  
Author(s):  
D. J. Minson ◽  
J. L. Cowper
Keyword(s):  
Dry Matter ◽  
Nitrogen Concentration ◽  
Matter Content ◽  
Urine Specific Gravity ◽  
Dry Matter Content ◽  
Total N ◽  
Automatic Feeder ◽  
Dry Matter Concentration ◽  
Continuous Background ◽  
Total Urine

1. A machine is described which automatically releases previously weighed rations to individually penned sheep at hourly intervals for 24 h. 2. Six sheep were kept in a room with constant light, temperature and continuous background noise and given 912 g lucerne daily at 10.00 h or at hourly intervals by means of the automatic feeder. Faeces and urine were collected every 2 h. 3. Hourly feedings reduced the variation between 2-hourly collection periods by 47, 87, 90, 85, 70 and 91% for total dry-matter content of the faeces, faeces dry-matter concentration, total urine output, urine specific gravity, urine nitrogen concentration and total N content of the urine respectively.

scholarly journals SOME IDEAS FOR MANAGEMENT AND CONTROL OF COW CONDITIONIN A SUCKLER COW HERD DURING PRE-CALVING PERIOD

2021 ◽  
pp. 81-88
Author(s):  
H. Scholz ◽  
Keyword(s):  
Dry Matter ◽  
Live Weight ◽  
Animal Husbandry ◽  
Matter Content ◽  
Dry Matter Content ◽  
Lactating Cows ◽  
Agricultural Enterprise ◽  
Effi Ciency ◽  
And Control

Cow management and feeding during pre-and post-calving periods is one of the factors of the economic effi-ciency of animal husbandry. There are various methods of feeding lactating cows but at the same time this topic is understudied in Germany. The experiment is based on long-term data on the birth rate and weight of calves at the Eden agricultural enterprise (Saxony-Anhalt, Germany) which was chosen as the main one for the study. The av-erage live weight of calves obtained from first-calf cows was 52 ± 8 kg at birth. The data on the live weight of calves obtained from cows of the first, second, and third lactations are presented. The differences in the live weight of calves revealed immediately after birth. Estimative de-scription of the condition of lactating cows is given. The dependence of the feeding of cows on the quality of the feed material, the content of protein and dry matter is shown. On average, the diet consisted of 99% of forages and had dry matter content of 38 ±6%. The average ener-gy content was 9.8 MJ ME or 5.9 MJ NEL per kilogram of dry matter. Various diets for dry cows were also studied. During the experiment, only the proportions of straw in the diet were changed so that practical conclusions could be drawn. In total, 3 variants were used: TMR with 30% of straw [TMR 1], TMR with 60% of straw [TMR 2] and feed-ing with silage from pure grass after calving. Brief recom-mendations are proposed in the conclusion.

Dry matter yield and nitrogen content in Lupinus spp. (Leguminosae) with potential as a green manure

2019 ◽  
Author(s):  
I. Zapata Hernández ◽  
Rodríguez Macías ◽  
P. M. García López ◽  
E. Salcedo Perez ◽  
A. Lara Rivera ◽  
...  
Keyword(s):  
Green Manure ◽  
Dry Matter ◽  
Experimental Period ◽  
Matter Content ◽  
Dry Matter Production ◽  
Dry Matter Content ◽  
N Content ◽  
Total N ◽  
Matter Production ◽  
Whole Plants

The potential of Lupinus exaltatus, L. mexicanus, and L. rotundiflorus foliage as green manure in terms of total dry matter production and nitrogen (N) content was evaluated. This study was conducted from November 2015 to March 2016 in Zapopan Jalisco, México. The experiment was established in a randomized 3×7 block factorial design. Whole plants, leaves and stems were collected at different periods after sowing and analyzed for N and dry matter content. At the start of the experimental period, a slow growth was observed, based on dry matter production; however, at 93 days after sowing, both biomass and total N increased in the aerial part. The lowest and highest N content was found in L. rotundiflorus (1.2 to 4.0%).The highest dry matter and N accumulated in whole plants were found in L. exaltatus at 169 days after sowing with 21,605 and 410.6 kg ha-1, respectively.

scholarly journals Germination and emergence of prickly lettuce (Lactuca serriola L.) and its susceptibility to selected herbicides

2011 ◽  
Vol 49 (No. 2) ◽  
pp. 89-94 ◽  
Author(s):  
J. Mikulka ◽  
D. Chodová
Keyword(s):  
Dry Matter ◽  
Soil Surface ◽  
Matter Content ◽  
Dry Matter Content ◽  
Herbicide Application ◽  
Active Ingredients ◽  
Lactuca Serriola ◽  
Prickly Lettuce

Three-year trials were conducted to study germination and emergence of prickly lettuce (Lactuca serriola L.) achenes, increments of shoot dry matter and susceptibility of the weed to selected herbicides. The germination rates of achenes at10&deg;C (92%),20&deg;C (97%) and30&deg;C (95%) did not indicate any significant differences within 20 days from sowing. The highest percentage emergence of prickly lettuce achenes was determined after their sowing into a&nbsp;depth of1 mm. Differences from the variants of sowing onto the soil surface (0 mm), into a&nbsp;depth of 10 and20 mm were significant. There were no differences in the emergence rates from a&nbsp;depth of 10 and20 mm. The highest increments of shoot dry matter were observed when prickly lettuce plants were grown for 4&ndash;7 weeks after sowing at20&deg;C. The effect of selected herbicides on prickly lettuce plants treated at the stage of 2&ndash;3 true leaves was evaluated on the basis of a&nbsp;change in the content of shoot dry matter. A&nbsp;significant decrease in dry matter against the control was recorded in all variants after herbicide application. The effect (expressed by a&nbsp;lower dry matter content) was significantly higher after the combination amidosulfuron + iodosulfuron-methyl + mefenpyr-diethyl (10 + 2.5 + 25 g/ha) was used than after the application of tribenuron (10.85 g/ha) and picolinafen + cyanazine (120 g + 480 h). The effect of amidosulfuron (22.5 g/ha) was significantly higher than in the variants treated with tribenuron, picloram + clopyralid (16.75 + 66.75 g/ha), clopyralid (90 g/ha) and picolinafen + cyanazine (150 + 600 g/ha). The best effects were produced by herbicides containing amidosulfuron and iodosulfuron as active ingredients. &nbsp;

EFFECTS OF NITROGEN RATES AND HARVEST SCHEDULES ON YIELD AND QUALITY OF WESTERWOLDS RYEGRASS GROWN AS A SUMMER ANNUAL

1980 ◽  
Vol 60 (2) ◽  
pp. 519-524 ◽  
Author(s):  
H. T. KUNELIUS
Keyword(s):  
Dry Matter ◽  
Lolium Multiflorum ◽  
Matter Content ◽  
In Vitro Digestibility ◽  
Dry Matter Content ◽  
Total N ◽  
Yield And Quality ◽  
Nitrogen Rates

Westerwolds ryegrass (Lolium multiflorum Lam. ’Promenade’) was grown on fine sandy and light loam soils. Nitrogen was applied at 40, 80, or 120 kg/ha after emergence and after both the first and second harvests. The 1st harvest under schedules A, B and C was on 10, 15 and 22 July followed by the 2nd harvest in 28, 37 and 40 days and the 3rd harvest in 30, 50 and 37 days after the 2nd harvest, respectively. The 4th harvest for schedule A was 46 days after the 3rd harvest. Mean dry matter yields ranged from 6.26 to 9.03 t/ha, total N in tissue from 2.09 to 2.99%, in vitro digestibility of dry matter from 73.3 to 76.3%, and dry matter content from 12.1 to 14.1% depending on the N rate and/or harvest schedule. Nitrate-N concentration in plant tissue was low for 40 and 80 kg/N/ha/application but reached up to 0.45% for the 120 kg/ha/application under harvest schedule A. Yield distribution within the season was most uniform for schedule B. A 3-harvest schedule with 80 kg/ha of applied N at seeding and after the 1st and 2nd harvests was suitable management for Promenade Westerwolds ryegrass in this region.

scholarly journals Investigation of the Biomass and Nutrient Content of Green Manuring Plants as Second Crops in Hungary

2012 ◽  
Vol 40 (1) ◽  
pp. 47
Author(s):  
Peter MIKO ◽  
Gergo KOVACS ◽  
Istvan BALLA ◽  
Laszlo VASA ◽  
Csaba GYURICZA
Keyword(s):  
Green Manure ◽  
Crop Production ◽  
Dry Matter ◽  
Biomass Yield ◽  
Soil Surface ◽  
Nutrient Content ◽  
Matter Content ◽  
Dry Matter Content ◽  
Macro Elements ◽  
The Given

The growth, and the development and trends of the nutrient content parameters of three different plant species (Phacelia tanacecifolia,Sinapis alba, Raphanus sativus) grown as secondary crops for green manure, as a function of two different fertiliser doses (0 kg/ha N; 50kg/ha N), was studied under unfavourable site conditions at the Crop Production and Biomass Utilisation Demonstration Centre of theSzent István University, Gödöllő, Hungary. The application of the small, 50 kg/ha dose of nitrogen increased the biomass yield in eachcase, to 2.78-3.11 times that of the control field. The dry matter content of the produce increased only by 2.11-2.66 times, as the watercontent of the green manure plants also increased as a result of the nitrogen supplement. The increased amount of nitrogen boosted theavailability of all of the other macro elements for the plants. In view of the present findings it can be recommend the application of somenitrogen fertiliser in the given site before growing some crop for use as green manure in all cases but where the straw after cereals is left onthe soil surface nitrogen should be applied to alleviate the pentosan effect and to increase the uptake of macro elements.

Chemical composition of clamped and baled grass silages harvested in England and Wales and relationships between dry matter content, pH and volatile N

1999 ◽  
Vol 132 (2) ◽  
pp. 163-172 ◽  
Author(s):  
M. FIELD ◽  
D. WILMAN ◽  
D. J. C. JONES
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Matter Content ◽  
Dry Matter Content ◽  
Total N ◽  
England And Wales ◽  
Straight Line ◽  
The Mean ◽  
The Relationship

The paper reports a study of the chemical composition of 25400 grass silages produced in England and Wales, of which 1040 were from the period 1961–63, 17900 (15480 clamped and 2420 baled) were from 1982–88 and 6460 (5640 clamped and 820 baled) were from 1992–93. A sample of each silage had been analysed for dry matter (DM), pH, crude protein (CP) and volatile N and in most cases for ash.The baled silages were drier on average than the clamped silages, with a wider spread of DM contents. The clamped silages with the lowest pH on average were those with a DM content of c. 240 g/kg; clamped silages wetter than this were progressively higher in pH with reduction in DM content; clamped and baled silages drier than 240 g/kg were progressively higher in pH with increase in DM content, up to pH 5·9 in baled silages of 580 g DM/kg. At a given DM content pH was on average 0·6 units higher in baled than in clamped silages. The ash content of baled silages was similar to that of clamped silages. There was an increase in the mean CP content of clamped silages between 1961–63 and 1992–93 and a reduction in the proportion of CP which was volatile. The relationship between DM and volatile N as a proportion of total N was a curve rather than a straight line, with the steepest part of the curve at the lower end of the DM range. The wet silages harvested in 1961–63 were particularly high in volatile N. At a given DM content in the range 170–320 g/kg, volatile N was rather higher in baled than in clamped silages in both 1982–88 and 1992–93. Clamped silages with a DM content of at least 250 g/kg and baled silages with a DM content of at least 310 g/kg were typically well preserved in the sense of having <100 g volatile N/kg total N.

scholarly journals The Effects of Different Seaweed Doses on Yield and Nutritional Values of Hydroponic Wheatgrass Juice

2017 ◽  
Vol 5 (3) ◽  
pp. 226
Author(s):  
Muhammet Karasahin
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Dry Matter ◽  
Triticum Aestivum L ◽  
Matter Content ◽  
Control Treatment ◽  
Dry Matter Content ◽  
Nutritional Values ◽  
Juice Yield ◽  
And Control

This research was conducted to determine the effects of different seaweed doses on yield and nutritional values of hydroponic wheatgrass (Triticum aestivum L.) juice in the climatization chamber of Karabuk University, Eskipazar Vocational School, Department of Crop and Animal Production between the dates of 15.01.2015 and 15.06.2015. In the research, four different seaweed doses (Control; 0, D1; 150, D2; 300, D3; 450 and D4; 600 ppm) and control were applied to irrigation water and their effects on the content of biomass rate, biomass and grass yield, grass juice yield and pH, plant height and root length, biomass and grass dry matter rate, grass juice energy and macronutrient values (protein, carbohydrate, fat, dietary fiber and ash) were analysed. According to the results, while the highest biomass and grass yield, plant height values were obtained from D1, D2, D3 and D4 treatments, the highest grass juice yield and root length were obtained from D3 treatment. The highest pH, grass dry matter content was obtained from control treatment. Seaweed dose treatments were not had influence on grass juice energy values. However, the rise in the grass juice yield was caused a rise in the total energy values in the unit area. D3 treatments can be recommendable to achieve the highest grass juice yield.

scholarly journals Studies on fertilization of dill (Anethum graveolens L.) and basil (Ocimum basilicum L.): I Herb yield of dill and basil affected by fertilization

1987 ◽  
Vol 59 (1) ◽  
pp. 11-17
Author(s):  
S. Hälvä ◽  
L. Puukka
Keyword(s):  
Dry Matter ◽  
Nitrate Concentration ◽  
Ocimum Basilicum ◽  
Matter Content ◽  
Dry Matter Content ◽  
Anethum Graveolens ◽  
Total N ◽  
Compound Fertilizer ◽  
One Year ◽  
Herb Yield

Fertilization of dill and basil was studied in 1984 and 1985 in Helsinki, both basic fertilization and N top-dressing being included. The total N doses were 0, 0.15, 0.3, 0.4, 0.8, 1.2 and 1.6 kg N/100 m2 for dill and 0, 0.2, 0.4, 0.8, 1.2 and 1.6 kg N/100 m2 for basil. The optimum basic fertilization for dill and basil was a compound fertilizer of the rate (NPK) of 0.4—0.16—0.68 kg/100 m2. In one year basil received a benefit from N top-dressing corresponding to total application of 0.8 kg N/100 m2. Estimating the yield by the amount of N fertilizer indicated that dill yield would increase up to the fertilizing rate of 1.15 and basil yield up to 1.0 (in 1985) or 1.50 (in 1984) kg N/100 m2 after which the herb yields will decrease. The dry matter content of dill decreased and the nitrate concentration of both dill and basil increased as the fertilization increased. Basil was severely damaged by fungus diseases, the more fertilization was applied.

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