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Articles 1621 - 1650 of 13468

Full-Text Articles in Plant Biology

Forage Contribution Of Overseeded Cool-Season Clovers, G D. Mooso Apr 2025

Forage Contribution Of Overseeded Cool-Season Clovers, G D. Mooso

IGC Proceedings (1977-2023)

Warm-season perennial grasses are the foundation of pasture systems in the southeastern U.S. Though well adapted, these species require significant amounts of nitrogen (N) fertilizers to maintain forage production. Nitrogen fertilizers are widely used to improve the yield and quality of grass pastures because it was less expensive and easier to manage than grass-legume mixtures. Cool-season clovers overseeded into dormant peren­nial warm-season swards offer a practical method to extend the grazing season and improve forage quality while capitalizing on the ability of inoculated clovers to supply nitrogen to pro­duction systems thus decreasing production costs (Burton, 1976 ; Hoveland et al., …

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Effect Of Irrigation On Vegetation Succession And Forage Regerneration, Fu Jing-Yan Apr 2025

Effect Of Irrigation On Vegetation Succession And Forage Regerneration, Fu Jing-Yan

IGC Proceedings (1977-2023)

No abstract provided.

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Reponse Du Brome Cathartique A L’Irrigation Premiers Resultats, C Longueval Apr 2025

Reponse Du Brome Cathartique A L’Irrigation Premiers Resultats, C Longueval

IGC Proceedings (1977-2023)

L'interet de J'irrigation des graminees prairiales est unc ques­tion souvent debattue dans le sud de la France ou la secheresse estivalc ct frequemment automnale limite considerablement la production de fourrage vert durant cette deuxiemc moitie de l'annee. Dans la region toulousaine, les travaux de l'INRA a Tou­louse (Marty et al., 1977) ct de la Compagnic d'Amenagemenl des Coteaux de Gascogne ont montre, pour la fetuque et le dac­tyle notamment, que si !'irrigation pcrrnet de doubler la pro­duction estivale et automnale. le niveau attcint sans restriction hydrique reste globalement rr{odcstc puisque inferieur a 5 t/ha M.S. a partir du debut de …

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Drought Stress And Alfalfa Production In A Mediterranean Environment, T Kipnis, I Vaisman, I Granoth Apr 2025

Drought Stress And Alfalfa Production In A Mediterranean Environment, T Kipnis, I Vaisman, I Granoth

IGC Proceedings (1977-2023)

Many experimental results have shown a close relationship between total dry matter (DM) yield of alfalfa and annual evapotranspiration (ET). However, this relationship may differ from harvest to harvest (Metochis and Orphanos, 1981), indicating that water use efficiency (WUE) may vary during the growing season, particulary as it is adversely affected by high temperature (Sammis, 1981). Water for irrigating alfalfa is often scarce during the dry Mediterranean summer in Israel. Under such conditions, water is withheld for approximately two months, at a relatively advanced stage of maturity, and the crop is allowed to go to seed, after which irrigation is …

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On The Cultivation And Utilization Of Floret Silvergrass (Miscanthus Floridulus) In The Southern Area Of China, Zhu Bangchang Apr 2025

On The Cultivation And Utilization Of Floret Silvergrass (Miscanthus Floridulus) In The Southern Area Of China, Zhu Bangchang

IGC Proceedings (1977-2023)

The plant genus Miscanthus (silvergrass) includes eight species and one variety in China. In the tropical and subtropi­cal area of south China, the silvergrass distributed widely includes the following seven species : Floret silvergrass ( Miscanthus floridulus), Chinese silvergrass ( M. sinensis), Sugary silvergrass ( M. sacchariflorus), Short-hair silvergrass ( M. brevipilus j, Eulalia silver grass ( M. eulalioides), Szechuan silvcrgrass ( M. szechuanensis), Nepal silvergrass ( M. nepalen�� sis). One of them, Floret silvergrass, is the widest in distri­bution and the highest in economical value, and plays a most important role in …

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Continuous Machine Line For Grassland Management On Slopes In Czechoslovakia, L Gonda, S Likavsky Apr 2025

Continuous Machine Line For Grassland Management On Slopes In Czechoslovakia, L Gonda, S Likavsky

IGC Proceedings (1977-2023)

Permanent grass covers in Czechoslovakia are to a great extent spread in sloping and rolling countryside. From the total area presenting 1,672 thousand hectares, 240 thousand ha are stretched on slopes with a gradient of 16 to 22 degrees. Research has shown that from 35 to 48 per cent of these pieces of land arc of size less than 10 ha and there are 75 per cent of intensive pastures with size smaller than 6 ha in typical moun­tainous regions of Czechoslovakia. Mechanization of grass picking on slopes is effected by speci­fic features predetermined by geographical conditions and requirements of …

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Studies On Irrigated Tropical Forage Legumes In Sudan, M.A M. Khair Apr 2025

Studies On Irrigated Tropical Forage Legumes In Sudan, M.A M. Khair

IGC Proceedings (1977-2023)

The drought which had struck Sudan in the last few years had necessitated the introduction of the livestock within the farming systems of the irrigated schemes. This implies growing of enough forages in these irrigated schemes. Lablab, Lablab purpureus, clitoria, Clitoria ternatea and phi­lipesara, Phaseolus trilobus are the most commonly grown for­age legume in the Sudan. Information pertaining to the agronomy of these forages are limited in the Sudan. In this report, two ongoing experiments concerning the agronomy of these legumes are discussed. The main objective of exper­iment I was to study the interactive effects of seed rates and cutting …

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Monitoring Annual Medicago Ley Pastures For Management Decisions, P G. Tow Apr 2025

Monitoring Annual Medicago Ley Pastures For Management Decisions, P G. Tow

IGC Proceedings (1977-2023)

The Ley Farming System of southern Australia uses a rotation of cereal and pasture comprising annual Medicago (medic) or Trifolium (clover) species. Pastures regenerate in autumn from the permeable fraclion of seed reserves. For M. truncatula cv. Jemalong barrel medic, this is about 10 % annu­ally (Crawford, 1970). In a survey of medic persistence in South Australia, Carter (1982) found that medic seed in the top 5 cm soil was highly correlated with plant density and production potential in the following year. Seed reserves associated with 400-500 plants/m2 were classed as 'good' in commercial practice, but such cases were uncommon, …

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Factors Affecting The Productivity Of Elephant Grass, G.E D. Tiley Apr 2025

Factors Affecting The Productivity Of Elephant Grass, G.E D. Tiley

IGC Proceedings (1977-2023)

Elephant grass (Pennisetum purpureum Schumach) is a highly productive and palatable fodder which is widely grown in the tropics (Bogdan, 1977). Optimum utilisation of its production potential is, however, limited by management factors which are associated with plant form and growth habit (Horrell and Tiley, 1970). These factors were studied in a series of trials at Kawanda Research Station, Kampala, Uganda (0°27'N, 32°30'E). A summary of the princi­ pal results is given.

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Effect Of Fall/Winter Harvest On Alfalfa (Medicago Sativa L.) Productivity And Persistence In A Mediterranean Climate, V L. Marble, C A. Schoner Jr, G Peterson Apr 2025

Effect Of Fall/Winter Harvest On Alfalfa (Medicago Sativa L.) Productivity And Persistence In A Mediterranean Climate, V L. Marble, C A. Schoner Jr, G Peterson

IGC Proceedings (1977-2023)

In California alfalfa fields are grazed or harvested one or more times after the last normal season harvest (LNSH). Schoner (1981) reported that one LNSH 30 days after the last (6th) harvest reduced yield for semidonnant (SD) WL 318 and very nondormant (VND) CUF 101 9 % over three years. With two harvests, losses were similar (12 % ) for WL 318, but doubled (27 %) for CUF 101. Worker and Marble (1987) found ( 10 annual harvests) no reduction in yield, vigor or stand with either one or two fall/winter (F /W) harvests if a 45 day rest was …

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Time Effect Of Top-Dressing On Yield And Quality Of Pangola Grass At Different Growth Seasons In Taiwan, Yeong-Chyn Wang Apr 2025

Time Effect Of Top-Dressing On Yield And Quality Of Pangola Grass At Different Growth Seasons In Taiwan, Yeong-Chyn Wang

IGC Proceedings (1977-2023)

Pangola grass (Digitaria decumbens) is one of two major for­age grasses in Taiwan. Usually, top-dressing of fertilizer after clipping will not be performed under no irrigation until rain comes. Thus, the dressing practice in the regeneration period is occasionally delayed several weeks just for waiting rainfall. Whether the delay of top-dressing will affect forage yield and quality of pangola grass becomes an interesting question. In order to understand the effects of time and amount of top­dressing on forage yield and quality of pangola grass, a 2-year field experiment was conducted.

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Autumn Management Of Lucerne, S J. Herbert, M Dempsey, D Cooley, G V. Litchfield Apr 2025

Autumn Management Of Lucerne, S J. Herbert, M Dempsey, D Cooley, G V. Litchfield

IGC Proceedings (1977-2023)

Past recommendations for lucernc autumn cutting manage­ment in the Northern USA have suggested a 'critical period' of 4-6 weeks growth prior to the first killing frost as necessary for long-term lucerne survival. Research had indicated that this period of growth prior to frost enabled plants to build up carbohydrate reserves to carry them through winter and pro­vide energy for regrowth in spring (Smith, 1972). If an autumn cut was desired, it was recommended it should be taken after the killing frost so that stand vigor and longevity is maintained. Inappropriate management may reduce plant vigor, and increase susceptibility to Fusarium …

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Increasing The White Clover Content In Pasture By Overseeding And Management, I Rais, J Kralovec, J Radej Apr 2025

Increasing The White Clover Content In Pasture By Overseeding And Management, I Rais, J Kralovec, J Radej

IGC Proceedings (1977-2023)

The aim of our research was to increase the content of white clover in pasture sward by a direct drilling and by different management under two levels of nitrogen fertilization.

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Effects Of Cutting Height On Forage Yield And Quality Of Napier Grasses, F H. Hsu, K Y. Hong, M C. Lee Apr 2025

Effects Of Cutting Height On Forage Yield And Quality Of Napier Grasses, F H. Hsu, K Y. Hong, M C. Lee

IGC Proceedings (1977-2023)

Napier grass (Pennisetum purpureum) is a tall and C4 grass. 11 produces the highest dry matter yield among grasses. Tt is one of the two major species grown as forage crops in Taiwan. Sev­eral new lines of napier grasses have been selected to grow in Taiwan recently. In order to understand how to manage the new lines of napier grasses, we conducted a three-year exper­iment to determine effects of cutting height on forage quality and dry matter production of napier grasses.

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Response To Cutting Frequency And Persistency Of Alfalfa Varieties Bred In Japan, F Fujimoto, K Yamashita, M Kanbe, S Inami Apr 2025

Response To Cutting Frequency And Persistency Of Alfalfa Varieties Bred In Japan, F Fujimoto, K Yamashita, M Kanbe, S Inami

IGC Proceedings (1977-2023)

In wanner region of Japan, alfalfa growing is going to spread for the need of high quality forage. Suitable cutting frequency with an adapted variety is the important key to success of alfalfa growing in these districts. Breeding of alfalfa varieties adapted to warmer Japan started in 1964 and two varieties, Natsuwakaba and Tachiwakaba, were released from Aichi-ken Agricultural Research Center up to this time. Other promising strains are also on the breeding program. Response to cutting frequencies and persistency of these varieties were studied, and comparing with two American varieties, their adaptability to wanner region of Japan was clarified.

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Response Of A Pennisteum Interspecific Hybrid And Local Cultivar Millo Blanco, Sorhum Biocolor L. Moench, To Cutting Intervals And Locations, A Sotomayor-Rios, S Torres-Cardona, W Hanna, A Quiles-Belen Apr 2025

Response Of A Pennisteum Interspecific Hybrid And Local Cultivar Millo Blanco, Sorhum Biocolor L. Moench, To Cutting Intervals And Locations, A Sotomayor-Rios, S Torres-Cardona, W Hanna, A Quiles-Belen

IGC Proceedings (1977-2023)

Napiergrass, Pennisetum purpureum (2n = 28), a robust per­ennial tropical cullivar, has a potential dry matter yield (DMY) of over 35,000 kg ha·1 yr·1 under intensive cutting management. Its digestibility, however, is lower than other tropical species and does not breed true from seed. Despite these drawbacks, it is a useful male parent for the development of interspecific hyb­rids with Pearl Millet, Pennisetum glaucum (2n = 14). Cytoplasmic male-sterile lines of Pearl Millet, crossed with Napiergrass result in an excellent interspecific triploid hybrid (3x = 21) which is seed propagated (Hanna and Monson, 1980). These triploid interspecific hybrids arc highly …

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Floristic Development Of Sown Grasses In Dependence Of The Seed Mixture And Sowing Procedure On A Riverside Grassland Area Endangered By Flood, H M. Bischoff, K Richter Apr 2025

Floristic Development Of Sown Grasses In Dependence Of The Seed Mixture And Sowing Procedure On A Riverside Grassland Area Endangered By Flood, H M. Bischoff, K Richter

IGC Proceedings (1977-2023)

Some of the most important grassland sites in the GDR are riverside areas. Nearly two thirds of these grasslands are situ­ated in the dike foreland, where they are often but irregularly flooded. Herc, the plant populations have been adapted to the conditions of flood and only seldom do they provide the requirements of productive cattle. Agropyron repens became the main species on numerous areas. To a high degree, yields and feed quality are influenced by time, duration and frequency of the floods and, above all, by silt sedimentation. This grass­land has been investigated in model-, plot- and large scale experiments …

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Meadow And Pasture Renovation In Some Parts Of Czechoslovakia, J Radej, M Bukvaj Apr 2025

Meadow And Pasture Renovation In Some Parts Of Czechoslovakia, J Radej, M Bukvaj

IGC Proceedings (1977-2023)

The present yields of meadows and pastures in the CSR are not sufficient to correspond with the needs of the advanced ani­mal production. The varieties of species in some stands are not suitable, the stands are thin with a high proportion of weed infes­tation. Most frequently clovers are missing, particularly white clover. Therefore, the quality of fodder is average, there is a shortage of the energy component and often or DCP as well. The renovation of grass stands by tillage, arable farming for the period of 1-2 years and the subsequent establishment of grass stands are implemented on more fertile …

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Determination Of The Most Suitable Sowing Date For Berseem Clover In Karaj, M H. Attaran Apr 2025

Determination Of The Most Suitable Sowing Date For Berseem Clover In Karaj, M H. Attaran

IGC Proceedings (1977-2023)

Trifolium alexandrinum is believed to be originated in Palestine. It thrives when the temperature is between 0° and 35°C and is used in frost free regions. Berseem clover makes its best growth on well-drained soils, but is susceptible to salinity. Berseem clover is an annual legume. It has an erect stem and reaches a height of about 75 cm. The tap-root may penetrate the soil to a depth of 40 to 60 cm. The leaves are tlifoliate. The flowers are composed panicle, the seeds vary in color from yellow to green, gradually turning red to brown. Pollination takes place by …

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Influence Du Mode Des Semis Et Des Associations Annuelles Graminees-Legumineuses Sur Le Rendement Et La Qualite Du Fourrage, S Ostojic Apr 2025

Influence Du Mode Des Semis Et Des Associations Annuelles Graminees-Legumineuses Sur Le Rendement Et La Qualite Du Fourrage, S Ostojic

IGC Proceedings (1977-2023)

Chaque anncc en Y ougoslavie, 1,5 million d'hectares sont ensemences avec des cereales de printemps. Apres la moisson, ccs terres restent generalement non semees jusqu'au printemps de l'annee suivante ou !'on scme des cultures sarclees. Eberhardt (1975) estime qu'en Yougoslavie, I% seulement de ces surfaces sont labourccs, ce qui est tres faible si !'on prend en consideration le fait que la periode de vegetation apres la moisson du ble se prolonge pendant environ 90 jours et que la somme de temperature bioclimatique est d'environ 1800 °C. De pareilles conditions rendent possible, a vcc !'irrigation, la reus­site d'une production de fourragc …

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Estimation Of The Possibility Of Use Of Some Species Of Grasses For The Direct Sowing In Sward, F Bukowiecki Apr 2025

Estimation Of The Possibility Of Use Of Some Species Of Grasses For The Direct Sowing In Sward, F Bukowiecki

IGC Proceedings (1977-2023)

One of the ways of counteracting the degradation of meadow plant communities is the improvement of their botanical com­position by direct sowing. In order io achieve this aim, various methods are applied: among others, sowing directly into sward (Laissus, 1984) and others. Success of sowing depends mainly on the efficiency of introduction of new grass species into the sward which is beeing degradated. That is why an attempt was made to estimate the possibility of use of some species of grasses for improvement of communities dominated by Poa pratensis on peat soils (Wizna Fen).

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Herbage Dynamics And Plant-Animal Performance On Altered Northern Great Plains Rangelands, P O. Currie, D C. Adams, J D. Volesky Apr 2025

Herbage Dynamics And Plant-Animal Performance On Altered Northern Great Plains Rangelands, P O. Currie, D C. Adams, J D. Volesky

IGC Proceedings (1977-2023)

Mechanical, chemical, and seeding treatments have been used on rangeland to increase herbage production (Griffith et al., 1985). These treatments are generally applied to rangelands in a low serial stage of succession. Improving these rangelands is of major economic importance to livestock producers attempting lo increase the efficiency of their operations. Our study evaluated 5 range improvement treatments for improving herbage and ani­mal production efficiency

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Herbage And Seed Yields Of Common Vetch (Vicia Sativa L.), M A. Jimenez, M.J L. Casterllon, A E. Cervantes, E F. Cervantes Apr 2025

Herbage And Seed Yields Of Common Vetch (Vicia Sativa L.), M A. Jimenez, M.J L. Casterllon, A E. Cervantes, E F. Cervantes

IGC Proceedings (1977-2023)

Alfalfa is the main forage species used in the dairy farms of the Central Valley of Mexico. Low temperatures and solar radiation during winter have been associated to the lower yields of alfalfa pastures from late fall to the end of winter. Winter pastures as annual ryegrass, small grains and com­mon vetch can overcome the seasonal low yields of alfalfa (Victoria, 1981). Use of common vetch to provide high yields of herbage of good quality during winter has been increasing; however, availability of seed is limited. In addition, there is little publi­shed information on management of common vetch pastures for …

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Systemes D’Amelioration De La Strate Herbacee Par Sursemis Dans Les Espinales De La Zone Mediterraneenne Subhumide Du Chili, Julia Avendano, C Ovalle Apr 2025

Systemes D’Amelioration De La Strate Herbacee Par Sursemis Dans Les Espinales De La Zone Mediterraneenne Subhumide Du Chili, Julia Avendano, C Ovalle

IGC Proceedings (1977-2023)

Les systemes traditionnels de semis de prairies, en tant que mode d'amclioration des zones pastorales degradees, sont inu­tilisables sur de grandes surfaces en raison du cout eleve du semis, incompatible avcc la productivite animalc et a cause des caracteristiques topographiqucs de nombreux sectcurs. De plus, le defrichement qu'implique cettc methode ne se justific pas si l'on considere le role benefique de l'espinal, savanc domi­nee par Acacia caven, sur la slrate herbacee (Ovalle et Aven­dano, 1987). En consequence, la faisabilite reduitc d'une eleva­tion de la production de ccs zones au moyen du semis traditionnel nous parait justifier l'etudc du comportement de …

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Initial Growth Of Herbages On The Seedbeds With Abundant Crushed Wood Fragments: A New Method Of Ploughless Pasture Establishment In Japan (Ii), S Suzuki, T Sugiura, H Kobayashi Apr 2025

Initial Growth Of Herbages On The Seedbeds With Abundant Crushed Wood Fragments: A New Method Of Ploughless Pasture Establishment In Japan (Ii), S Suzuki, T Sugiura, H Kobayashi

IGC Proceedings (1977-2023)

The pasture established by the new ploughless method produces lower levels of herbages in the first year (Sugiura et al., 1987). It is supposed that crushed wood fragments (CWF) arc easily dried in the seedbeds (Sugiura et al., 1986 ; Suzuki et al., 1986). We investigated the effects of the CWF and the water supplying character of the soils on the initial growth of the herbages in the seedbeds.

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A New Method Of Ploughless Pasture Establishment In Japan (I), H Kobayashi, S Suzuki, T Sugiura Apr 2025

A New Method Of Ploughless Pasture Establishment In Japan (I), H Kobayashi, S Suzuki, T Sugiura

IGC Proceedings (1977-2023)

The authors had already planned and tested a new method of ploughless pasture establishment with new machines in a beech forest on the foothill of Mt. Hakkohda in Aomori Prefecture, north-eastern district of Japan since 1983 (Kobayashi, 1985 ; Tanaka et al., 1985; Sugiura et al., 1986; Suzuki et al., 1987; Sugiura et al., 1987). The properties of this method are the stump-cutter (SC) and the bush-cutter (BC) which are new machines for establishing grassland. Owing to these two machines, it is possible to con­verse the natural environment and to reduce establishing costs of grassland. This report refers to a …

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Grassland Improvement By Clover Direct Drilling, Z Hrazdira Apr 2025

Grassland Improvement By Clover Direct Drilling, Z Hrazdira

IGC Proceedings (1977-2023)

Besides the production function, grasslands have got also exceptional significance for environmental conditions, such as retention and protection of resources of drinking water,- pre­vention of erosion and devastation of soil. Their non-pro­duction functions are especially irreplaceable on slope grasslands which dominate in our country. The renewal should be a most efficient intervention on the weedy grassland swards without good species. But that tra­ditional technology can not be employed in most cases on slopes, in inundated areas or in submountain and hill regions of our country.

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Methodology To Determine Planting Time In King Grass (Pennisetum Sp.) Using Historical Climatic Indices, J R. Ayala, M Sistachs, R S. Herrera Apr 2025

Methodology To Determine Planting Time In King Grass (Pennisetum Sp.) Using Historical Climatic Indices, J R. Ayala, M Sistachs, R S. Herrera

IGC Proceedings (1977-2023)

The determination of planting time by field trials has various disadvantages. These trials should be repeated at least for 3 years comparing different months and the extension of the results is limited. The analysis of the climatic effects would allow a greater generalization with correlations between cli­matic and establishment indices. The season of the year in which the highest number of correlations with monthly histori­cal climatic values are fulfilled is required so as to determine planting time. The objective of the present methodology is to select planting time by using correlations between climatic and establishment indices and the monthly characterization …

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Methods For The Establishment Of Leucaena Leucocoephala In Cuba, T E. Ruiz, G Febles, N Sistachs, L E. Diaz, G Bernal, J J. Leon Apr 2025

Methods For The Establishment Of Leucaena Leucocoephala In Cuba, T E. Ruiz, G Febles, N Sistachs, L E. Diaz, G Bernal, J J. Leon

IGC Proceedings (1977-2023)

Studies in tropical and sub-tropical regions of the world on the factors influencing the establishment and early manage­ment of legume swards as pure cultures have not been carried out integrally. Thus, the objective of the present study was to define the best options of the main components so as to develop a technology for establishing Leucaena leucocephala under our conditions.

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Studies On Seed Storage And Sowing Time Of Leucaena Leucocphala In Cuba, T E. Ruiz, G Febles Apr 2025

Studies On Seed Storage And Sowing Time Of Leucaena Leucocphala In Cuba, T E. Ruiz, G Febles

IGC Proceedings (1977-2023)

Germination of stored seeds and sowing time are essential factors that must be known when a technology for pasture utili­zation is required (Febles and Ruiz, 1986; Ruiz and Febles, 1986). Thus, these experiments were set out to learn the per­formance of the seed quality of Leucaena leucocephala cv Peru stored under different conditions and to determine the influence of the sowing time of this species during the rainy season.

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