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Articles 61 - 90 of 56472
Full-Text Articles in Physical Sciences and Mathematics
Optimizing The Contribution Of Cowpea To Food And Fodder Production In Crop-Livestock Systems In West Africa, S A. Tarawali, B B. Singh, S Fernandez-Rivera, M Peters, J W. Smith, R Schultze-Kraft, H A. Ajeibe
Optimizing The Contribution Of Cowpea To Food And Fodder Production In Crop-Livestock Systems In West Africa, S A. Tarawali, B B. Singh, S Fernandez-Rivera, M Peters, J W. Smith, R Schultze-Kraft, H A. Ajeibe
IGC Proceedings (1997-2023)
Cowpea is important for the provision of both grain for food and fodder for livestock but there is often a trade-off between production of the two. To better understand influences on grain and fodder production, and how these may be utilized, research was conducted at 5 locations in west Africa using 12 cowpea varieties, with and without insecticide spray. Spraying had a dramatic effect on grain production, but less so for fodder, however there was an effect of spraying on fodder quality in terms of in sacco digestibility at Niamey. Accessions with the potential to produce grain and fodder with …
Corn Or Sorghum/ Italian Ryegrass Forage Rotation Under Different Cultivation Systems In High Rainfall Areas Of Spain, M Rodriquez-Juli, I Bordegarai, G Besga, A Martinez, J Pineiro
Corn Or Sorghum/ Italian Ryegrass Forage Rotation Under Different Cultivation Systems In High Rainfall Areas Of Spain, M Rodriquez-Juli, I Bordegarai, G Besga, A Martinez, J Pineiro
IGC Proceedings (1997-2023)
A field assay was established at three locations in northern Spain with the main objective of characterizing forage production and evaluating no-tillage methods as an alternative to the conventional labour practices. Three fields located in Guntìn (Galicia), Grado (Asturias) and Derio (Basque Country) were sown different rotations: Italian ryegrass (Lolium multiflorum L.)-corn (Zea mays L.) and Italian ryegrass-sorghum (Sorghum bicolor (L.) Moench x sudangrass) under two different systems: conventional tillage (T) and no-tillage (NT). Italian ryegrass-corn rotation was more productive than the sorghum x sudangrass rotation in the three sites, with average forage yield varying from 17.8 …
Selection And Utilization Of Stylosanthes Guianesis, For Green Cover And Feed Meal Production In China, Lin Guodao, P C. Kerridge
Selection And Utilization Of Stylosanthes Guianesis, For Green Cover And Feed Meal Production In China, Lin Guodao, P C. Kerridge
IGC Proceedings (1997-2023)
This study illustrates the value of acquiring, evaluating and making available wild legume germplasm for evaluation in different production systems. A tropical legume selected for use as a pasture legume in South America proved to have greater value as a component in feed meal in intensive production systems in China, where it can return USD 1,400 per hectare, than as a pasture plant.
Constraints To Production Of Annual Medic (Medicago Spp.) Pastures In Southern Australia, M D. Denton, W D. Bellotti, C R. Hill, S P. Taylor
Constraints To Production Of Annual Medic (Medicago Spp.) Pastures In Southern Australia, M D. Denton, W D. Bellotti, C R. Hill, S P. Taylor
IGC Proceedings (1997-2023)
A field experiment was used to determine the effects of the root lesion nematode (Pratylenchus neglectus) and phospate and zinc nutrition on the production of annual medic pastures. Elimination of nematodes (nematicide increased shoot and seed production significantly and zinc and nematicide in combination significantly reduced numbers of nematodes present in roots.
Agronomy Of Lathyrus Species In South Australia, M S. Miyan, W D. Bellotti, P D. Carpenter
Agronomy Of Lathyrus Species In South Australia, M S. Miyan, W D. Bellotti, P D. Carpenter
IGC Proceedings (1997-2023)
Agronomic studies on Lathyrus sativus and L. cicera, promising forage and/or grain legumes, are presented. Time of seeding, seeding rate and grain recovery following grazing were investigated in preparation for the release of the first Australian commercial cultivars of Lathyrus. Clear optimal seeding rate, time of seeding, and guidelines for grazing have been identified. A seeding rate of 45-60 kg/ha and an early sowing time (June 6 in this experiment) were identified for maximum grain yield. Grain yield following grazing can be equal to ungrazed crops although sufficient time between grazing and flowering is required to ensure adequate grain yields. …
Tropical Corn For Silage In Multiple Cropping Systems, J C. Burns, D S. Fisher
Tropical Corn For Silage In Multiple Cropping Systems, J C. Burns, D S. Fisher
IGC Proceedings (1997-2023)
This study compared the yield potential and inherent nutritive value and quality of tropical corn (Zea mays L.) with temperate corn and two forage sorghums [Sorghum bicolor (L.) Moench] for use in multiple cropping systems. Tropical corn showed high dry matter yield potential (19.3 Mg ha-1) compared with a selected temperate corn (14.7 Mg ha-1) or with an intermediate (8.5 Mg ha-1) or taller growing forage-type sorghum (10.3 Mg ha-1). Neutral detergent fiber concentration (g kg-1) was lower for temperate corn (330) than for tropical (548) corn which had a concentration similar to the intermediate (497) and forage-type …
Common Toadflax (Linaria Vulgaris) A Persistent Weed In Alfalfa (Medicargo Sativa) Hay Fields, J R. King, L Zaychuk
Common Toadflax (Linaria Vulgaris) A Persistent Weed In Alfalfa (Medicargo Sativa) Hay Fields, J R. King, L Zaychuk
IGC Proceedings (1997-2023)
The spread and persistence of common toadflax (Linaria vulgaris) when growing alone and in competition with alfalfa (Medicargo sativa) maintained as a hay crop in central Alberta Canada was monitored over a four year period. Competition from alfalfa reduced the rate of spread of the weed, and multiple harvests of the crop prevented toadflax seed set. The presence of the weed did not significantly affect the yield of alfalfa.
The Beneficial Effects Of Short-Term Rotation Systems Of Winter Forage Crops With Maize On Dry Farming Land Of Southwestern China, S R. Zhou, U Simon, K Mao
The Beneficial Effects Of Short-Term Rotation Systems Of Winter Forage Crops With Maize On Dry Farming Land Of Southwestern China, S R. Zhou, U Simon, K Mao
IGC Proceedings (1997-2023)
The objective of this study was to sift out the suitable and better short-term rotation systems of winter forage mixture with maize on dry farming land for the local farmers in Southwestern China. Four species of legume, Italian ryegrass and maize were used to organize six treatments for this experiment. The result showed that the three rotation systems of Astragalus sinicus (80%) + Lolium multiflorum (20%) ’ Zea mays, Medicago hisida (70%) + Lolium multiflorum (30%) ’ Zea mays and Vicia villosa (75%) + Lolium multiflorum (25%) ’ zea mays obtained good forage values (TDOM 4.06-4.36 t/ ha, CP 1.10-1.58 …
The Comparison Of Different Short-Term Rotation Systems Of Winter Forage Crops With Rice In Subtropical Plain Region Of Southwestern China, U Simon, S R. Zhou, K Mao
The Comparison Of Different Short-Term Rotation Systems Of Winter Forage Crops With Rice In Subtropical Plain Region Of Southwestern China, U Simon, S R. Zhou, K Mao
IGC Proceedings (1997-2023)
The objective of this study was to explore the possibility of growing winter forage crops in the present farming system with simple grain production only in subtropical plain region of southwestern China. The result showed that the four rotation systems i.e. Astragalus sinicus (70%) + Lolium multiflorum (30%) rice, Medicago hispida (75%) + Lolium multiflorum (25%) rice, Lolium multiflorum (20%) + Vicia villosa (80%) rice and Astragalus sinicus (80%) + Brassica napus (20%) rice obtained good forage values (TDOM 3.35-4.12 t/ha, CP 1.12-1.31 t/ha, ME 2.53-3.19 X 104 MJ/ha), at the same time, obtained better rice yields (DW 6.35-7.17 t/ha) …
Influence Of Fertilization And Utilization On Botanical Composition And Yield Of Selected Grass Mixtures, R Zarudzki, W Opitz Von Boberfeld, P Daniel, W Mikulski
Influence Of Fertilization And Utilization On Botanical Composition And Yield Of Selected Grass Mixtures, R Zarudzki, W Opitz Von Boberfeld, P Daniel, W Mikulski
IGC Proceedings (1997-2023)
The objective of this study was to determine the influence of fertilization and system of utilization on feeding value and usability for ensilage of selected grass mixtures, first with advantage of ryegrass (Lolium perenne L.), second with orchard grass (Dactylis glomerata L.), in simulating grazing land utilization (6-cuttings per year) and cutting utilization on hay or silage (3-cuttings per year). It was utilized for four years in using the full seeding method. Based on two grass mixtures and using different systems of utilization and different levels of fertilization was tried to define how to proceed with grassland reclamation …
Effects Of Inoculation With Lactobacillus Casei Subsp. Rhamnosus At Ensiling On Fermentation And Flora Of Lactic Acid Bacteria Of Grass Silages, T Masuko, F Kitajima, S Okada, T Uchimura
Effects Of Inoculation With Lactobacillus Casei Subsp. Rhamnosus At Ensiling On Fermentation And Flora Of Lactic Acid Bacteria Of Grass Silages, T Masuko, F Kitajima, S Okada, T Uchimura
IGC Proceedings (1997-2023)
The purpose of this study was to determine whether the inoculation with Lactobacillus casei subsp. rhamnosus (L.c.r) at ensiling would improve the fermentation and affect the flora of lactic acid bacteria of orchardgrass (Dactylis glomerata L) and timothy (Phleum pratense L) silages. The fermentation quality of orchardgrass and timothy silages were improved by the addition of L.c.r and Lactobacillus casei subsp. casei (L.c.c) except orchardgrass silage stored at 15°C. In orchardgrass and timothy silages, the species of lactic acid bacteria in the control silages was different than the inoculated silages. At 15°C and 35°C, L.c.r was dominant in …
Alfalfa (Medicago Sativa L.) Screening For Post-Harvest Fungal Resistance, V I. Babij, K M. Wittenberg, S R. Smith Jr
Alfalfa (Medicago Sativa L.) Screening For Post-Harvest Fungal Resistance, V I. Babij, K M. Wittenberg, S R. Smith Jr
IGC Proceedings (1997-2023)
A leaf screening procedure developed by Wittenberg et al. (in preparation) for detection of plants resistant or susceptible to fungal growth after cutting was compared with fungal growth on whole plants were chopped and stored under warm humid conditions in the laboratory or wilted and baled in a simulated field trial. Four genotypes previously identified as having low, variable and high susceptibility to fungal growth after harvest were used. Extent of fungal growth, as measured by glucosamine analysis, for plant material chopped and incubated under conditions conducive to molding, supported plant resistance ratings as determined by the screening procedure. Minimal …
Intake, Growth And Feed Preference By Steers Fed Combinations Of Alfalfa And Annual Ryegrass Silage, E Charmley
Intake, Growth And Feed Preference By Steers Fed Combinations Of Alfalfa And Annual Ryegrass Silage, E Charmley
IGC Proceedings (1997-2023)
Nutritive value and intake of legumes is generally considered superior to grasses when ensiled at similar digestibility. The objectives of this experiment were to determine the optimum combination of annual ryegrass (Lolium multiflorum) and alfalfa (Medicago sativa) silages to maximize growth rate of steers fed silage, determine chemical components which influenced performance, and to determine if steers selected the optimum mixture when given a choice. Both silages contained similar concentrations of dry matter, acid detergent fibre and organic acids, but alfalfa silage had higher concentrations of nitrogen (N), soluble N and ammonia N. Annual ryegrass contained …
Steer Growth With Round-Baled Red Clover Silage Preserved With Enzyme Based Additive, P Narasimhalu
Steer Growth With Round-Baled Red Clover Silage Preserved With Enzyme Based Additive, P Narasimhalu
IGC Proceedings (1997-2023)
A 12-wk growth trial was conducted on 32 Holstein steers to study the effects of preserving round-baled red clover (Trifolium pratense L.) without or with enzyme additive on silage composition and steer performance. Enzyme additive did not affect silage composition except for increasing lactic acid content. Intake was higher for treated silage but live weight or carcass gain was not different between untreated and treated silage. Supplementing treated silage with barley did not affect silage intake but roasted-steeped soybeans or potato plus roasted-steeped soybeans lowered silage intake. Supplementation of treated silage, particularly with barley, improved live or carcass weight.
Post-Harvest Residue Management Methods In Kentucky Bluegrass Seed Production On The Eastern Canadian Prairies, D R. Bruce, G B. Coukell, E B. Wright
Post-Harvest Residue Management Methods In Kentucky Bluegrass Seed Production On The Eastern Canadian Prairies, D R. Bruce, G B. Coukell, E B. Wright
IGC Proceedings (1997-2023)
Studies were conducted to evaluate methods of crop residue management in seed production fields of Kentucky bluegrass (Poa pratensis L.). Five residue management systems were evaluated at two sites for effectiveness of maintaining seed yield in comparison to the traditional method of burning crop residues. At Selkirk, MB, open burning applied shortly after harvest was the most effective, followed closely by dethatching of the stand. A later implemented trial at Stead, MB indicated that late season burning of residues reduced the seed yield compared to baling the residue only. All residue removal methods increased the seed yield over bale only. …
Storage Losses In Large Round Bale Using Various Storage Methods For Six And Eighteen Months, R C. Reeder, D H. Samples, H M. Bartholomew, S L. Boyles
Storage Losses In Large Round Bale Using Various Storage Methods For Six And Eighteen Months, R C. Reeder, D H. Samples, H M. Bartholomew, S L. Boyles
IGC Proceedings (1997-2023)
Grass hay was baled with a variety of balers and tying materials in June, 1994 and 1995, at Jackson, Ohio. The bales were prepared and stored several ways. Waste hay accounted for less than ten percent of the dry matter after storage for six and eighteen months in all cases except one (a plastic wrap system intended for use with haylage). Bales stored inside had no waste. The best outdoor storage system, with less than one percent waste, used a ‘bale bonnet’ (top half covered with a plastic sheet) with the bale on a slatted pallet. One group of bales …
Effect Of The Ammoniation On Brachiaria Decumbens Hays, B Rosa, R A. Reis, K T. Resende, L.R De A. Rodrigues, C C. Jobim
Effect Of The Ammoniation On Brachiaria Decumbens Hays, B Rosa, R A. Reis, K T. Resende, L.R De A. Rodrigues, C C. Jobim
IGC Proceedings (1997-2023)
The effect of the ammoniation on B. decumbens hay obtained during the phase of seed maturation were studied as follows: hay not treated and hay treated with 2 or 3% of NH3, or 3.6 or 5.4% of urea. Ammoniation reduced the contents (g/kg DM) of NDF, hemicellulose, ADF, and lignin and increased the contents of total N, and ADIN; the IVDMD; the IVOMD; the “in situ” degradability of DM and OM and the apparent digestibility (g/kg nutrient) of DM, OM, and CP, as well increased the daily voluntary intake (g/kg0.75) of DM, the digestible DM, OM, the digestible OM, the …
Effects Of A New Cellulase Derived From Acremonium On Silage Fermentation, K Atakul, A Aniwaru, N Narasaki, E No, E Chase
Effects Of A New Cellulase Derived From Acremonium On Silage Fermentation, K Atakul, A Aniwaru, N Narasaki, E No, E Chase
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L) and timothy (Phleum pratense L) were ensiled in laboratory silos to evaluate the effect of cellulase derived from Acremonium (0, 0.005, 0.01, and 0.02% to alfalfa and 0, 0.006, 0.012, and 0.024% to timothy) on silage fermentation. In alfalfa, the addition of cellulase inhibited the production of butyric acid, and as the percentage of cellulase increased, the concentration of ammonia decreased and the content of lactic acid increased. The dry matter recovery significantly decreased with the addition of cellulase. The quality of timothy silage also increased due to the absence of butyric acid. The …
Influence Of Drying Method And Temperature Of Ruminal Degradable Protein Of Switchgrass, D E. Farnham, K J. Moore, J R. George
Influence Of Drying Method And Temperature Of Ruminal Degradable Protein Of Switchgrass, D E. Farnham, K J. Moore, J R. George
IGC Proceedings (1997-2023)
The nutritional value of herbage protein fed to ruminant livestock can be influenced greatly by the extent to which it is degraded in the rumen. This study was conducted to determine if drying method and temperature alters measurements of in situ ruminal escape protein (EP) of switchgrass herbage. Switchgrass harvested at the pre-heading stage was either air dried, freeze dried, or oven dried at 38, 49, 60, or 71° C. Samples from each of the six drying treatments were digested in situ in Dacron bags for 4, 8, 12, or 16 h. Drying treatment had a significant impact on EP …
Ensilage For Low Resources Farmers 1. Drum, Wirebasket And Pit As Silos, F.H. K. Asiedu, C A. Alexander, G Proverbs
Ensilage For Low Resources Farmers 1. Drum, Wirebasket And Pit As Silos, F.H. K. Asiedu, C A. Alexander, G Proverbs
IGC Proceedings (1997-2023)
King grass (Pennisetum purpureum x P. americanum) was ensiled in metal drum, wirebasket and pit silos in a randomized block design with eight replications in order to determine whether the silos produced silage of the same quality and at the same cost. Pit silage had the most desirable characteristics, followed by drum silage. Moisture content (708 v 718 and 741 g/kgDM for drum and wirebasket respectively), pH (5.18 v 5.65 and 5.77), ammonia nitrogen (137 v 149 and 164 g/kgDM), and butyric acid (8.5 v 11.2 and 14.6 g/kgDM) were lowest, while lactic acid (28.2 v 26.3 and …
Ensilage For Low Resources Farmers 2. Poultry Litter As Cheap Additive, F.H K. Asiedu, C A. Alexander, G Proverbs
Ensilage For Low Resources Farmers 2. Poultry Litter As Cheap Additive, F.H K. Asiedu, C A. Alexander, G Proverbs
IGC Proceedings (1997-2023)
The effect of poultry litter (15% wet basis) additive on the quality of king grass (Pennisetum purpureum x P. americanum) silage was studied in a randomized block design experiment (8 replications). Compared with grass silage (G), grass + poultry litter (G+P) caused significant (P<0.05) reduction in moisture (G, 716 v G+P, 670 g/ kgDM), pH (5.41 v 4.72) and butyric acid (9.6 v 5.5 g/kgDM). Crude protein (CP, Nx6.25, g/kgDM), in vitro digestibility (IVOMD, g/ kgDM) and metabolizable energy (ME, MJ/kgDM) increased from (G)104, 536 and 8.00 to (G+P) 127, 613 and 9.19. In a feeding trial using St. Elizabeth x Barbados Blackbelly lambs G+P gave significantly (P<0.05) higher daily gain (182 v 149 for G). This was related to significantly (P<0.05) higher intake of CP and ME from G+P (71.9 v 55.1 g/d and 5.20 v 4.24 MJ/d).
Influence Of Addition Of Previously Fermented Juice To Alfalfa Ensiled At Different Moisture Contents, M Ohshima, L M. Cao, E Kimura, Y Ohshima, H Yokota
Influence Of Addition Of Previously Fermented Juice To Alfalfa Ensiled At Different Moisture Contents, M Ohshima, L M. Cao, E Kimura, Y Ohshima, H Yokota
IGC Proceedings (1997-2023)
Alfalfa (Medicago sativa L.)was ensiled with or without previously fermented juice (PFJ) after wilting for 0, 3, 6 and 24 h. They were ensiled in 900ml glass bottles at 400g/800cm3 and preserved at 25°C for 45 d. The moisture content of the silages were 810, 730, 690 and 580g/kg, respectively. The PFJ was prepared by macerating 200g of freshly harvested alfalfa with 1,000ml of water, filtering through double cheese cloth, adding 20g/l sucrose and incubating anaerobically at 30°C for 2 d. They were added 2.5ml/kg of chopped alfalfa. Lactic acid fermentation of silage was enhanced bAlfalfa (Medicago sativa …
Additives As Preservatives For Wrapped Round Bales Silage Made Under Tropic Climate, J M. Paillat, G Mandret
Additives As Preservatives For Wrapped Round Bales Silage Made Under Tropic Climate, J M. Paillat, G Mandret
IGC Proceedings (1997-2023)
In tropical highlands it is difficult to conserve harvested forage as silage. Tests with molasses as an additive, or using ammonium tetraformiate (ATF) or inoculants have been conducted to find out more about the fermentation process in these conditions. Sugar additives are not the primary factor in the fermentation process. Nevertheless, they are essential to make up for the small amounts of water soluble carbohydrates (WSC) in the forages, but only if the dry matter (DM) content is high enough (27% for temperate species, 40 % for the kikuyu grass). Even at high rates such as 5 l t-1 of …
Effect Of Storage On Quality Of Cowpea Haulm Hay Under Warm Humid Conditions, S O. Apori
Effect Of Storage On Quality Of Cowpea Haulm Hay Under Warm Humid Conditions, S O. Apori
IGC Proceedings (1997-2023)
The effect of four months storage on chemical composition of hay prepared from cowpea haulm was monitored in a Coastal savanna environment in Cape Coast, Ghana. The average hydrometeorological conditions during the experimental period were 27.1oC of temperature, 30.1mm of rainfall, 80.4% of relative humidity and 0.80 water activity. Parameters measured were dry matter (DM%), crude protein (CP%), metabolisable energy for ruminants [MEr, MJME/KgDM], protein to energy ratio (p/E, g/MJME), pH, and rumen degradable nitrogen (RDN,%). The CP, MEr, P/E, pH and RDN values of 13.04%, 7.17 MJME kg-1DM, 18.18g/MJME, 6.35 and 58.83% of freshly prepared hay changed to 12.05%, …
Intake, Digestion And Performance Comparisons For Cattle Fed Macerated Vs. Roller-Conditioned Alfalfa (Medicago Sativa L.) Forage, Suwarno, K M. Wittenberg, W P. Mccaughey
Intake, Digestion And Performance Comparisons For Cattle Fed Macerated Vs. Roller-Conditioned Alfalfa (Medicago Sativa L.) Forage, Suwarno, K M. Wittenberg, W P. Mccaughey
IGC Proceedings (1997-2023)
The objective of this study was to determine whether maceration of alfalfa forage at the time of harvest will have a positive impact on intake, digestibility and performance in beef cattle. A performance trial conducted with 24 growing beef calves resulted in a 7% and 10% increase (P<0.05) in dry matter intake (kg/d) and daily gain (kg), respectively, when animals were fed alfalfa silage harvested with a macerator vs. a mower conditioner. Feed efficiency was not affected by treatment. Four steers assigned to alfalfa hay harvested with a macerator vs. mower conditioner showed no differences in dry matter intake, however, dry matter digestibility for the macerated hay was higher.
Comparative Characteristics During Wilting For Forage Harvested By Maceration Vs. A Conventional Roller-Conditioner, Suwarno, K M. Wittenberg, W P. Mccaughey
Comparative Characteristics During Wilting For Forage Harvested By Maceration Vs. A Conventional Roller-Conditioner, Suwarno, K M. Wittenberg, W P. Mccaughey
IGC Proceedings (1997-2023)
Two studies were conducted to monitor forage nutrient and microbial changes during wilting of alfalfa (Medicago sativa L.) forage in response to varying degrees of maceration at harvest. Early bloom alfalfa forage was harvested with either a roller conditioner (Control) or a macerator, with four degrees of maceration (Light, Light plus, Moderate and Severe) imposed. Macerated forage reached an 80% dry matter 10-27 hours sooner than roller-conditioned forage, the most rapid drying rates being associated with the more severely macerated treatments. Total bacteria and lactic acid bacteria populations tended (P < 0.07 and P < 0.08, respectively) to increase with maceration. Macerated forage, when exposed to precipitation, had lower (P < 0.05) crude protein and higher (P < 0.05) fiber concentration than roller-conditioned forage. Macerated forage, exposed to 2 cm precipitation during wilting without precipitation reached 80% DM sooner than conventionally cut alfalfa exposed to no precipitation.
Forage Maceration On A Self-Propelled Mower: Effect Of Windrow Deposition And Inversion, P Savoie, D Tremblay, J Lajoie, M Roberge, S P. Lemay
Forage Maceration On A Self-Propelled Mower: Effect Of Windrow Deposition And Inversion, P Savoie, D Tremblay, J Lajoie, M Roberge, S P. Lemay
IGC Proceedings (1997-2023)
Forage maceration is an intensive conditioning technique applied at mowing with high speed rolls. Maceration has been observed to enhance the field wilting rate, produce a more efficient silage fermentation and accelerate ruminal degradation. An important technical hurdle has been to scale up maceration for wide mowers without reducing capacity. The paper descibes a three-roll maceration unit that was integrated in a self-propelled 4.2 m wide mower. A capacity of 2.75 ha/h and throughputs up to 14 t DM (dry matter)/h or 64 t WM (wet matter)/h were achieved in alfalfa and timothy. Compared to a commercial mower-conditioner, the macerator …
Dry Matter Yield And Nutritive Value Of Coast-Cross N1 Preserved As Hay, Silage, And Haylage, J B. Andrade, E Ferrari Jr, W Lavezzo, V T. Paullino, J R. Nogueira, G Braun, F B. Castro
Dry Matter Yield And Nutritive Value Of Coast-Cross N1 Preserved As Hay, Silage, And Haylage, J B. Andrade, E Ferrari Jr, W Lavezzo, V T. Paullino, J R. Nogueira, G Braun, F B. Castro
IGC Proceedings (1997-2023)
Dry matter yield and nutritive value of coast-cross n° 1 (Cynodon dactylon (L.) Pers preserved as hay, silage and haylage were studied. The forage was harvested after 28, 35, 42 and 49 days of growth. Fertilization was completed with 400 kg/ha single superphosphate and 500 kg/ha 20-0-20 at the beginning of the experiment. The experimental design for dry matter yield (2 x 2 m plots) was a randomized block with four replications. Nutritive value was also analyzed in a randomized block design being the treatments arranged in a 3 x 4 factorial (three preservation methods and four ages). Dry …
Evolution Of The Nutritional Quality During Big Bale Ensilage Of Temperate Multispecies Pastures, L M. Gutierrez, E M. Viviani Rossi
Evolution Of The Nutritional Quality During Big Bale Ensilage Of Temperate Multispecies Pastures, L M. Gutierrez, E M. Viviani Rossi
IGC Proceedings (1997-2023)
The objective of this work was to assess the evolution of the nutritive quality of big bales composed of multispecifies pastures (Phalaris acuática, Festuca arundinacea, Lolium perenne and Medicago sativa). Ten big bales were analysed after 90 and 120 days for the following: dry matter (%DM); crude protein (CP, %DM); pH; neutral detergent fibre (NDF, %DM); digestibility in vitro of DM (IVDMD, %DM); ammonia nitrogen (NH3-N/%TN); soluble protein (SP, %NT) and non structural carbohydrates (WSC, %DM).The results were analyzed through variance of the means and significant differences (p<0.05) were found in percentages of DM (32.9% and 27.8%); CP (12.1% and 8.6%); pH (4.6 and 6.7); IVDMD (61.1% and 53.2%); N-NH3/TN (11.8% and 36.0%); SP (8.6% and 12.6%) and no differences were found in NDF (60.2% and 61.6%) and WSC (2.8% and 1.9%) (p>0.05).
The Drought Resistance Mechanism Of Phalaris Arundinacea L., Qi Guang, Zhou Bibua
The Drought Resistance Mechanism Of Phalaris Arundinacea L., Qi Guang, Zhou Bibua
IGC Proceedings (1997-2023)
The measurement of morphological and physiological indices of Phalaris arundinacea to drying and irrigation treatments and in natural field conditions (ck) were conducted in tillering stage and stem elongation stage. Results show that plants in the drying treatment, compared with plants in the irrigation treatment and control, that their single plant leaf area, plant height, chlorophyll content, intensity of photosynthesis, stomatal area and plant yields were decreased, but the intensity of respiration increased. Through statistic analysis, none of those indices, except stomatal area, were significantly different. It indicates that the species of Phalaris arundinacea is strongly drought resistant and could …