Biological And Ecological Properties Of Lotus Corniculatus L.,
2026
Belorussian agricultural academy
Biological And Ecological Properties Of Lotus Corniculatus L., Vitalo Strelkov
IGC Proceedings (1977-2023)
Tests have shown that the life duration of wild-growing birdsfoot trefoil (Lotus corniculatus L.) on natural meadows was between five and six years. That spa_n can be extended to something between eight and nine years in a seeded-grass environment. The winter hardiness of birdsfoot trefoil is poor, and so is its growth under flood water, as it would be displaced by wild-growing grasses. Its yield is higher if proper drainage is provided, with ground-water tables varying between 60 and 100 cm. About 60 % or even more birdsfoot trefoil plants may be destroyed when grown under cover crops for grain. …
Red Clover/Grass Mixtures For Continuous Forage Supply In Medium-Altitude Mountain Areas,
2026
Akademie der Landwirtschaftswissenschaften der Deutschen Demokratischen Republik
Red Clover/Grass Mixtures For Continuous Forage Supply In Medium-Altitude Mountain Areas, Gerhard Knoch, Johanna Leistner
IGC Proceedings (1977-2023)
The fresh forage supply of a 2000-head dairy farm with clover/grass and red clover, 'Perenta' variety, is possible from about the third pentad of May up to the second pentad of September. For this, 740 hectares have to be harvested, i.e. 4 to 9 ha per day. The mean energy concentration of the fresh forage amounts to 562 energetic feed equivalents (cattle) per kg DM. The lowest values of 507 and 510 energetic feed equivalents (cattle) per kg DM are obtained in the second growth of clover/grass in the third and fourth pentads of July, respectively, and the highest values, …
Cultivation Of Alfalfa And Alfalfa/ Grass Mixtures At Higher Altitudes In Czechoslovakia,
2026
Vyzkumny Ustav Melioraci, Praha/Zbraslav
Cultivation Of Alfalfa And Alfalfa/ Grass Mixtures At Higher Altitudes In Czechoslovakia, Jan Radej
IGC Proceedings (1977-2023)
Experimental results have shown that the cropping area of alfalfa can be extended to suitable locations of the potato growing region. Due to the great heterogeneity of soil conditions, red clover cannot, however, be completely eliminated from the cropping pattern in this area, because alfalfa gives higher dry matter yields than red clover only after three years. Therefore, in a more humid potato growing region with compacted soils it will be more suitable to grow red clover, or mixtures including red clover, at differentiated levels of nitrogen fertilization.
Yield And Stand Dynamics Of Medicago Sativa As Influenced By Seeding Management,
2026
Purdue University
Yield And Stand Dynamics Of Medicago Sativa As Influenced By Seeding Management, R E. Mullen, J J. Vorst, H E. Laborde, C L. Rhykerd
IGC Proceedings (1977-2023)
Late summer seeding of alfalfa resulted in higher yields than did spring seeding only for the first year after seeding. Yields of late summer seeded plots progressively decreased through the third year after seeding, but yield of spring seeded plots remained constant. In the third year, there were 14 % more plants/m2 in spring seeded plots than in late summer seeded plots, but stems/m2 remained constant for both seeding dates. In second and third years, broadcast seeding resulted in greater yields and more plants and stems/m2 than row seeding. Over the three-year period highest yields were obtained when plants and …
Effects Of Seeding Rate On Chemical Composition Of Alfalfa Herbage,
2026
Purdue University
Effects Of Seeding Rate On Chemical Composition Of Alfalfa Herbage, R E. Mullen, J J. Vorst, V L. Lechtenberg, C H. Noller, H E. Laborde
IGC Proceedings (1977-2023)
Cell wall constituent (CWC) percentage, in vitro cell wall constituent disappearance (IVCWCD), and crude protein percentage were determined in alfalfa herbage from plots broadcast seeded at 4.5, 9.0, 18.0, and 36.0 kg of seed/ha. Data were obtained for the seeding year and two years following the seeding year. CWC percentage for first cutting alfalfa herbage averaged 4.2 percentage units lower than for second cutting alfalfa herbage. However, IVCWCD did not differ between first and second cutting alfalfa herbage (p < 0.05). No relationships were apparent between CWC percentage and IVCWCD, which were apparently not affected by seeding rates. Crude protein percentage of alfalfa herbage did not vary among the various seeding rates. High plant population resulting from high seeding rates did not result in increased alfalfa herbage digestibility and crude protein.
Cover Crops For Perennial Forage Plants Under Conditions Of High-Intensity Arable Farming,
2026
All-Union Williams Forage Research Insitute
Cover Crops For Perennial Forage Plants Under Conditions Of High-Intensity Arable Farming, Yu K. Novoselov
IGC Proceedings (1977-2023)
High and stable yields of perennial forage plants grown under conditions of high-intensity arable farming depend decisively on proper timing of sowing as well as on correct choice of the most suitable sowing method. Early-spring sowing of perennial forage plants under summer crops was found to be an optimum approach in the nonchernozem zone of the European part of the • USSR. The safe development of the seedlings of a given forage crop depends on proper choice not only of the species but also of the variety of the cover crop. If more nitrogen is applied, particularly in years with …
Effect Of Planting Methods On The Establishment Of Panicum Maximum Jacq. On Natural Pastures,
2026
Instituto de Ciencia Animal, San Jose de las Lajas
Effect Of Planting Methods On The Establishment Of Panicum Maximum Jacq. On Natural Pastures, C Padilla, L Sanchez, J Sarroca, G Febles
IGC Proceedings (1977-2023)
Six planting methods were studied for the establishment of guinea grass on natural pastures (Andropogonea) minimizing mechanical soil labour and burning. Methods essayed were: asexual plant cuttings and/or botanical seeds, planted in furrows, harrowing or not before furrowing, and the latter type of seeds broadcast on soils already ploughed and harrowed or only harrowed. The best establishment was obtained when seed.s were broadcast, guinea grass replacing natural pasture species in 78 to 94 % when the soil was only harrowed and when ploughed + harrowed before sowing, respectively. Dry matter yields of broadcast guinea ranged from 5 to 6 t/ha …
Establishment Of Brachiaria/Legume Pastures In The Northern Guinea- Savanna Of Nigeria,
2026
Ahmadu Bello University
Establishment Of Brachiaria/Legume Pastures In The Northern Guinea- Savanna Of Nigeria, J O. Akinola
IGC Proceedings (1977-2023)
Pastures of signal grass (Brachiaria brizantha) planted alone and also in mixtures with 8 tropical pasture legumes sown by broadcasting or drilling in the 1974 growing season in the Northern Guinea Savanna of Nigeria were evaluated at establishment in terms of DM yield, N and P content, and stand survival after the dry season. High-density (30 x 37.5 cm) pure B. brizantha pasture gave the highest OM yield, 18,000 kg/ha, whilst the mixture involving drilled Desmodium tortuosum produced the lowest DM, 7100 kg/ha. Broadcasting was slightly superior to drilling, and the legumes were richer than the grasses, in terms …
Methods Of Oversowing Perennial Soybean (Glycine Wightii) Into Pangola Grass (Digitaria Decumbens) And Native Pasture,
2026
Instituto de Ciencia Animal, San Jose de las Lajas
Methods Of Oversowing Perennial Soybean (Glycine Wightii) Into Pangola Grass (Digitaria Decumbens) And Native Pasture, Marta Monzote, T Hernandez
IGC Proceedings (1977-2023)
Four sowing methods: (1) disk harrowing and broadcast sowing, (2) broadcast sowing and disk harrowing, (3) planting with direct sowing machine, and (4) broadcast sowing, were compared to measure the establishment capacity of Glycine wightii cv. Tinaroo in (a) pangola grass (Digitaria decumbens) and (b) native pastures (Bothriochloa/Dichanthium mixture). A random block design with four replications was used. The germination was higher with direct sowing (80 and 110 plants/m2) and lower in broadcasting (8 and 15 plants/m2) in (a) and (b), respectively. All the treatments were considered as established six months after sowing, although showing different percentages of …
Surface Sowing Of Grass Seeds In The Paddy Fields In Japan,
2026
Kawase Grassland Farming Research Institute
Surface Sowing Of Grass Seeds In The Paddy Fields In Japan, T Isamu Kawase
IGC Proceedings (1977-2023)
The author describes the characteristic points of climate and geographical conditions compared with Western Europe, and introduces the vegetation and grass production in Japan. As the temperature goes up over 25 °C during about 45 days in summertime and it is pretty wet during that period, too many varieties of grasses; including many weeds, are growing up. Winter conditions in Japan are severe and cold, it is comparatively dry. Therefore we have successions of winter grass and summer grass. In such circumstances, the climax is forest, and Japan took her way of rice cropping in summertime instead of stock farming …
Possibilities Of Improving Grass Stands On Mineral Soils Waterlogged At Times,
2026
Vyskumny Ustav Luk a Pasienkov
Possibilities Of Improving Grass Stands On Mineral Soils Waterlogged At Times, Zdenek Hrazdira
IGC Proceedings (1977-2023)
On heavy gley soils waterlogged at times, a rapid renovation of degraded grass stands on meadows resulted in an increase of crude protein yields by more than 200 %. At the same time, on larger areas sporadic drainage can be replaced by the so-called biological drainage. The rapid renovation of originally degraded grass stands must be carried out during the relatively driest time of the vegetation period, above all by combining the use of total herbicides with ploughing; in places where drinking water is collected, tillage by means of the rotavator should be the only agrotechnical measure applied. Under the …
Methods Of Renovation Of Meadows Stands In Mountainous Regions,
2026
Vyskurnny Ustav Luk a Pasienkov
Methods Of Renovation Of Meadows Stands In Mountainous Regions, Bohus Holecy
IGC Proceedings (1977-2023)
Under the conditions of the Carpathian mountain region in Czechoslovakia (Lower Tatra), a significant increase of the productiveness of natural grass stands was attained by the use of several methods of renovation. Grassland renovation without complete destruction of the sward allows with one or two operations with or without application of Gramoxone to obtain highly productive grass stands giving 7.3 to 8.4 t DM/ha on the average of 5 years. When sowing grass mixtures with the rotaseeder, row spacing (11, 20, 30 cm) is not decisive for the formation of dry matter yield. A more important factor is the seed …
The Use Of Rotary Implements For The Rapid Renovation Of Natural Grass Stands With Smaller Irregularities Of Soil Surface,
2026
Vyskumny Ostav Luk a Pasienkov
The Use Of Rotary Implements For The Rapid Renovation Of Natural Grass Stands With Smaller Irregularities Of Soil Surface, Jan Tomasik
IGC Proceedings (1977-2023)
On a natural grass stand with the dominance of Trisetum jlavescens L., the suitability of rotary implements was tested for the removal of smaller irregularities of the soil surface obstructing large-scale mechanization. It was found that it is possible by means of rotary implements in one operation to completely remove irregularities of the soil surface or to limit them to a minimum. The use of rotary implements for the rapid renovation helped to improve the botanical composition of the renovated stand and to increase production. The use of rotary implements for the removal of surface irregularities enables the regeneration of …
Usefulness Of Particular Renovation Methods Of A Meadow Situated On Peat-Muck Soil,
2026
Instytut Melioracji i Uzytkow Zielonych
Usefulness Of Particular Renovation Methods Of A Meadow Situated On Peat-Muck Soil, Franciszek Ksawery Bukowiecki
IGC Proceedings (1977-2023)
On a meadow established in 1965 on excessively moistened peat-muck soil with a low mucking degree, sward renovation measures were carried out in the period 1971-1973. For this purpose, ploughing and rotavation were executed and compared with the treatment without tillage, at 4 treatments of a differentiated NPK fertilization and NPK + Cu + Mg fertilization. The effect of the tillage measures mentioned, jointly with sowing, on a differentiation of the botanical composition of the sward (and its yielding) was insignificant. On the other hand, fertilization proved to be significant for both botanical composition and yielding of sward. A fertilization …
Renovation Of Sown Grassland - Impact On Quantity And Chemical Composition Of Herbage,
2026
Yyskumny Ustav Luk a Pasienkov, Banska Bystrica,
Renovation Of Sown Grassland - Impact On Quantity And Chemical Composition Of Herbage, Pavel Morhac
IGC Proceedings (1977-2023)
The following conclusions are drawn from the results of nine-year studies regarding the renovation of sown grassland and its effects on the quantity and chemical composition of herbage: The mean per-hectare herbage yields obtainable from sown grassland even on gravelly sandy-loamy riverside soils with little nutrient supply still are between 5.5 and 7.5 tons of dry matter. Mechanical treatments applied in the second, third, and fourth years of use did not have any positive effect on herbage yields and failed to rule out critical years. Yield decline was found to have. been influenced mainly by the renovation year. In view …
The Use Of Heavy Solvents For Separating Seed From Soil,
2026
The University of Adelaide
The Use Of Heavy Solvents For Separating Seed From Soil, Edward D. Carter, Stephen Challis, Ian G. Ridgway
IGC Proceedings (1977-2023)
Problems related to separating seeds from soil in ecological studies involving seed-seedling dynamics of annual pastures are discussed. The special roles of non-flammable chlorinated solvents as flotation agents in separating seed from soil are described. Studies showed that there was a slight, but significant (P < 0.05), overall effect of these chemicals on germination of seed of six species and cultivars: however, perchloroethylene appears to have no effect on germination.
Effect Of Seed Pre-Sowing Hardening On Grain Sorghum,
2026
Universita degli Studi
Effect Of Seed Pre-Sowing Hardening On Grain Sorghum, Antonio Corleto, Mallik A-As-Saqui
IGC Proceedings (1977-2023)
The claim that seed pre-sowing hardening treatment increases the drought tolerance and seed production of crops was investigated. The results obtained by this study confirm those findings. It was found that seeds, when soaked in tap water for 24 h and dried at room temperature until they had reached their original weight, showed a major increment in seed production and number of seeds per panicle compared with the control and hardened seeds subjected to other soaking times and the alternative method of drying. Highest seed production with 24 h soaking was found when soil fertility (fertilizer and irrigation) was satisfactory. …
New Findings On Seed Rates In Sown Grass Farming,
2026
Akademie der Landwirtschaftswissenschaften
New Findings On Seed Rates In Sown Grass Farming, Erich Kreuz
IGC Proceedings (1977-2023)
Field experiments conducted in the GDR over several years have shown that it is possible to considerably reduce seed rates specific to pure stands of valuable forage grasses. This allows to arrive at almost optimal plant spacing. On account of these findings, the seed rates for mixed and pure grass stands in commercial grass farming in the GDR were reduced to an optimum of 16-20-24 kg/ha. In view of the hitherto common seed rates of 30-40 kg/ha, this practice has allowed to save substantial amounts of grass seeds and to cut costs.
Productivity Of Tall Fescue (Festuca Arundinacea Schreb.) And Other Forage Grasses In The North-Western Part Of The Rsfsr,
2026
Research Institute of Agriculture, Velikie Luki, Soviet Union
Productivity Of Tall Fescue (Festuca Arundinacea Schreb.) And Other Forage Grasses In The North-Western Part Of The Rsfsr, V P. Spasov
IGC Proceedings (1977-2023)
Results are given of experiments conducted • from 1972 to 1976 to investigate the productivity of tall fescue (Festuca arundinacea Schreb.) as single crop and in mixture with alfalfa at different levels of mineral fertilization and different cutting frequencies. In normal dry valleys in the case of fertilization with 120 kg N, 60 kg P, and 90 kg K/ha and two-cut utilization, Festuca arundinacea ('Baltika') outyielded Dactylis glomerata L. ('Jygeva 242') by 13 % in terms of dry matter, and Festuca pratensis Huds. ('Jygeva 47') by 26 %. The dry matter yield of Festuca arundinacea amounted to 6.6 t/ha …
An Attempt To Select Grass Species And Varieties With Different Ripening Rhythm In Preparing Simple Seed Mixtures For Mown Meadows,
2026
Instytut Melioracji i Uzytkow Zielonych
An Attempt To Select Grass Species And Varieties With Different Ripening Rhythm In Preparing Simple Seed Mixtures For Mown Meadows, Tadeusz Pawlak
IGC Proceedings (1977-2023)
Studies were conducted into proper selection of grass species and varieties with different ripening rhythm, to secure optimum yields from the first growth harvested at different dates. The beginning of the heading stage in the principal components of a mixed grass stand was chosen as the optimal time for harvesting. The field experiments were carried out on three different sites in the Vistula marshland (Zulawy region). Expected satisfactory levelling of dry matter yield and of crude protein yields as well as of crude protein contents was not achieved.
