Open Access. Powered by Scholars. Published by Universities.®

Agronomy and Crop Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1801 - 1830 of 16391

Full-Text Articles in Agronomy and Crop Sciences

Intermediate White Clover - A Model For Clover Persistence On The Gulf Coast In Usa, G W. Evers Apr 2025

Intermediate White Clover - A Model For Clover Persistence On The Gulf Coast In Usa, G W. Evers

IGC Proceedings (1977-2023)

The Gulf Coast region of the USA is classified as subtropical (Rotar and Kretschmer, 1985). Persistence of perennial temper­ate legumes in this area is poor because of climatic, manage­ment, insect and disease factors (Kendall and Stringer, 1985). Frosts during the short-day season limit flowering and seed set of perennial tropical legumes (Rotar and Kretschmer, 1985; Evers, 1973). Annual Trifolium spp. or perennial species which act as annuals, are used in the area (Evers, 1984). The major limitation of annual legumes is dependable reseeding each fall. Although classified as a perennial, Hollowell (1966) has suggested that white clover (Trifolium repens …

Go to article

Productivity Of Selected High And Low Leaf Area Expansion Festuca Arundinacea Strains, D A. Sleper, C J. Nelson Apr 2025

Productivity Of Selected High And Low Leaf Area Expansion Festuca Arundinacea Strains, D A. Sleper, C J. Nelson

IGC Proceedings (1977-2023)

A selection program was initiated in 1975 to select for high (H) - and low (L)-LAER in a broad-based population of tall fescue ( Festuca arundinacea Schreb.) to improve vegetative herbage yield (Nelson and Sleper, 1983). Response to divergent selection was linear and symmetric for five cycles (Reeder et al., 1984). Mean increase in selecting for H-LAER was greater than 10 % per cycle ; a mean decrease of more than 8 % per cycle was observed when selecting for L-LAER. Nelson et al. (1977) and Reeder et al. (1984) showed that H­LAER genotypes had wider leaves and higher leaf …

Go to article

Effects Of Acid Soil Selection On Agronomically Important Traits In Alfalfa, J H. Bouton, D E. Radcliffe Apr 2025

Effects Of Acid Soil Selection On Agronomically Important Traits In Alfalfa, J H. Bouton, D E. Radcliffe

IGC Proceedings (1977-2023)

Acid soils and their related toxicities are found in every con­tinent of the world. Since liming and fertilization rarely over­come subsoil acidity, poor rooting usually results when grow­ing sensitive legumes such as alfalfa ( Medicago sativa L.). Subsoil liming increased alfalfa yield 46 % over conventionally limed controls indicating deeper rooting achieved through an ability to overcome subsoil toxicity significantly enhanced stand life and productivity (Bouton et al., 1986). If acid soil tol­erance could be incorporated into new multiple-pest resistant cul ti vars without loss of their desirable traits, farmers may real­ize the benefits of any new alfalfa cultivar. The …

Go to article

Improvement Of Winter, Early Spring Growth In Temperate Pasture Grasses, D R. Kemp, M O. Humphreys, C F. Eagles Apr 2025

Improvement Of Winter, Early Spring Growth In Temperate Pasture Grasses, D R. Kemp, M O. Humphreys, C F. Eagles

IGC Proceedings (1977-2023)

Improvement of pasture growth during winter and early spring in temperate regions has been a major goal of many grass breeding programmes. Improvements have been made by selecting for increased yield in early spring, although the basis of these yield improvements is poorly understood. The increase, measured as vegetative components of yield, has been interpreted as improved efficiency of growth at low tempera­tures. However, there is evidence that increased grass growth rates during late winter and early spring are associated with reproductive development (Kemp, 1985, 1988). In this paper we review physiological evidence for growth differences between genotypes during winter …

Go to article

Kikuyu Grass Improvement For Grazing And Amenity Uses, G J. Piggot, H M. Morgan Apr 2025

Kikuyu Grass Improvement For Grazing And Amenity Uses, G J. Piggot, H M. Morgan

IGC Proceedings (1977-2023)

Kikuyu grass (Pennisetum clandestinum) is a stoloniferous perennial important in warm-temperate and sub-tropical regions for grazing, erosion control, or amenity uses. Genetic improvement and the registration of cultivars has occurred in Australia (Wilson, 1975; Anon., 1983a, 1983b). Evaluation in New Zealand of this material has investigated the potential for further improvement of kikuyu grass for grazing and amenity uses. In this work, plants considered suitable for selection as a « grazing» type have erectness, large leaves, low stolons number, and high yield. «Amenity» types have fines leaves, thin stolons, low stolon number, and a prostrate and dense habit.

Go to article

Adaptation Of The Tree Legume Leucaena To Avid Tropical Soils, E M. Hutton Apr 2025

Adaptation Of The Tree Legume Leucaena To Avid Tropical Soils, E M. Hutton

IGC Proceedings (1977-2023)

Leucaena leucocephala (Lam.) de Wit is native to alkaline soils of Central America, especially Mexico. It is persistent and widely grown in the tropics for leafy, high protein forage giving high productivity in cattle and goats. Leucaena thrives in fert­iles soils with pH's in excess of about 5.5. In the tropics, includ­ing 55 % of South America, 40 % Africa and 37 % Asia, where soils are infertile oxisols and ultisols with pH's 5 or less, com­mon Leucaena varieties like Cunningham lack productivity and persistence. Genetic adaptation of L. leucocephala varieties to acid trop­ical soils was found possible (Hutton, 1981 …

Go to article

Varietal Differences Of Competitive Ability During Establishment Stage In Dactylis Glomerta And Lolium Perenne, S Sugiyama Apr 2025

Varietal Differences Of Competitive Ability During Establishment Stage In Dactylis Glomerta And Lolium Perenne, S Sugiyama

IGC Proceedings (1977-2023)

Herbage grasses are usually grown in association with other herbage species in pastures. But populations which are very productive under the pure swards do not necessarily show high productivity under the mixed swards (Eagles, 1983). Thus, competitive ability becomes important in determining the pro­ductivity of component species in mixed swards. This paper examines the varietal differences of performance during estab­lishment stage when grown in association with other grass species, and morphological characteristics affecting it for two grass species, Dactylis glomerata and Lolium perenne.

Go to article

Forage And Seed Yield Of 9 Chloris Gayana (Rhodes Grass) Varieties At 3 Sites In Zimbabewe, P A. York, E Nyamandzawo, E Bemont Apr 2025

Forage And Seed Yield Of 9 Chloris Gayana (Rhodes Grass) Varieties At 3 Sites In Zimbabewe, P A. York, E Nyamandzawo, E Bemont

IGC Proceedings (1977-2023)

Katambora Rhodes grass (diploid) is grown in rotation with tobacco in Zimbabwe to control Meloidogyne javanica (root­knot nematode). A 4 year ley is recommended (Martin, 1967) as the nematode can survive in bare fallow for up to 4 years. Katambora produces less herbage than Zimbabwe Giant, and is less palatable than it and other tetraploids. Potential area of use is 200 to 250 thousand ha, and annual replacement 60,000 ha. A breeding project was initiated in 1986 to combine the agronomic value of tetraploid types with the nematode resistance of Katambora. In addition to forage yield and nematode resistance seed …

Go to article

Bean Yellow Mosaic Virus Resistance In Arrowleaf Clover, G R. Smith, I J. Pemberton Apr 2025

Bean Yellow Mosaic Virus Resistance In Arrowleaf Clover, G R. Smith, I J. Pemberton

IGC Proceedings (1977-2023)

Arrowleaf clover (Trifolium vesiculosum Savi) is a winter annual forage legume often overseeded on warm-season peren­nial grass pastures in the southern region of the United States. Bean yellow mosaic virus (BYMV) can reduce forage pro­duction, seed production and cause plant death of arrowleaf clover (Gibson et al., 1979; Pratt et al., 1982). Resistance to BYMV has been identified in red clover (Trifolium pratense) and the inheritance reported in detail (Taylor et al., 1986). A research program was initiated in 1985 to quantify the effects of BYMV on arrowleaf and to develop BYMV resistant arrowleaf germplasm through recurrent …

Go to article

Breeding For Resistance To Root Rot In Red Clover, B Andersson, U Kristiansson Apr 2025

Breeding For Resistance To Root Rot In Red Clover, B Andersson, U Kristiansson

IGC Proceedings (1977-2023)

Red clover (Trifolium pratense L.) is one of the most import­ant species for forage production in Sweden. The use of red clo­ver is however restricted by poor persistence among other things caused by attacks of fungal diseases like clover crown rot and root rot. Investigations have shown (Rufeldt, 1986) that root rot is distributed in almost every field where red clover is grown and is one of the main reasons for the poor persistence. In the same investigations Fusarium roseum, Phoma medicaginis and Cylindrocarpon sp. are pointed out as the most important fungi in the root rot complex. One …

Go to article

An Induced Non-Nitrogen-Fixing Mutant In Stylosanthes Guianensis, J W. Miles, R Sylvester-Bradley Apr 2025

An Induced Non-Nitrogen-Fixing Mutant In Stylosanthes Guianensis, J W. Miles, R Sylvester-Bradley

IGC Proceedings (1977-2023)

A reliable seedling genetic marker would • improve the efficiency of a recurrent selection scheme used in the tropical forage legume Stylosanthes guianensis (Miles, 1985; Cameron and Irwin, 1986). However, seedling markers are rare in S. guianensis. Only presence vs. absence of stem pubescence is reported (Cameron and Irwin, 1986), and this is an unreliable marker in many crosses (Miles, unpublished data). We initiated a project to induce a seedling mutant with gamma radiation. Non-nodulating mutants have been found in other legume species (e.g. Davis et al., 1985) so our project was deliberately designed to identify these if they occurred. …

Go to article

The Role Of Root System In Tall Fescue (Festuca Arundinacea Schreb.) Productivity, N Gaborcik Apr 2025

The Role Of Root System In Tall Fescue (Festuca Arundinacea Schreb.) Productivity, N Gaborcik

IGC Proceedings (1977-2023)

Dry matter production of tall fescue (Festuca arundinacea Schreb.) is usually analysed from the following aspects: 1. CO2 metabolism., 2. leaf area index., 3. morphological traits. The relationship between photosynthesis and DM production of this species is relatively complex and not yet clearly elucidated (Wilhelm and Nelson, 1978). On the other hand a close relationship between the leaf area index and DM production of this species was confirmed (Poskuta et al., 1986; Gaborcik, 1986 a). There is relatively less information about the relation­ship between root system characteristics and shoot DM pro­duction (Elkins et al., 1979). The aim of this …

Go to article

Genetic Variances In Crested Wheatgrass - Alfalfa Mixtures, K H. Asay, D A. Johnson Apr 2025

Genetic Variances In Crested Wheatgrass - Alfalfa Mixtures, K H. Asay, D A. Johnson

IGC Proceedings (1977-2023)

Since it was first successfully introduced into North America from Eurasia in 1906 (Dillman 1946), crested wheatgrass [Agropyron cristatum (L.) Gaertner, A. desertorum (Fish. ex Link) Schultes, and A.fragile (Roth) Candargy] has had more impact on revegetation of western rangelands in North America than any other grass. Much of the early crested wheat­grass seedings were made as monocultures ; however, the multiple demands now made on rangelands dictate that other grass, shrub, and forb species be included in the seeding mix. The advantages of grass-legume mixtures in terms of improved forage quality and productivity are well documented (Trenbath, 1974). …

Go to article

Breeding Acid-Soil Tolerant Lines Of The Tropical Grass Panicum Maximum Jacq., E M. Hutton Apr 2025

Breeding Acid-Soil Tolerant Lines Of The Tropical Grass Panicum Maximum Jacq., E M. Hutton

IGC Proceedings (1977-2023)

Coloniao (P. maximum) originally from Africa is widely grown in fertile tropical soils, especially of Brazil, because of high yield and feeding value. Its growth and persistence are poor in the extensive acid oxisols and ultisols (pH 4.5-5.0) of South America (68 % in Brazil) where pasture improvement is increasing. The object of the work was to create sufficient variability in the usually apomictic P. maximum by crossing it with some of the few available obligate sexual types of the species (Hanna et al., 1973). This was to give opportunity for selection of acid­soil tolerant lines.

Go to article

Improvement In Seasonal Production Of Orchardgrass (Dactlyis Glomerata L.) By Selection For Flowering Habit In Autumn Environment, S Sato, F Ikegaya, S Kawabata Apr 2025

Improvement In Seasonal Production Of Orchardgrass (Dactlyis Glomerata L.) By Selection For Flowering Habit In Autumn Environment, S Sato, F Ikegaya, S Kawabata

IGC Proceedings (1977-2023)

Reproductive development of temperate grass species gener­ally proceeds by exposure to low temperature and short daylength and then to moderate temperature and long daylength. However, differentiation and development of inflorescences can be observed even under short day conditions in spring habit types of temperate grasses and grain crops such as ryegrass, wheat, barley and oats. Similar variations called ever-flowering habit were found in orchardgrass. The purpose of this study was to select the materials for ever­flowering habit, to observe their productive behavior under some temperature and photoperiod conditions and to improve seasonal production by using selected materials in orchard­grass.

Go to article

Breeding White Clover For Resistance To Root Know Nematode, J Van Den Bosch, C F. Mercer Apr 2025

Breeding White Clover For Resistance To Root Know Nematode, J Van Den Bosch, C F. Mercer

IGC Proceedings (1977-2023)

White clover (Trifolium repens L.) is the most important legume species used in New Zealand pastoral agriculture (Willi­ams, 1987). However, its growth and fixation of nitrogen can be severely reduced by the root knot nematode, Meloidogyne hapla Chitwood (Widdowson et al., 1973; Yeates et al., 1973; Yeates et al., 1977). This nematode is commonly found throughout New Zealand (Mercer and Woodfield, 1986; Skipp and Christensen, 1983) Chemical control is not economic, or environmentally desir­able. The breeding of resistant cul ti vars may be an effective way to reduce the effects of this pest. Resistance or tolerance in white clover …

Go to article

Performance Of Trifolium Repens Genotypes Under Grazing In New Zealand Hill Pasture, J.F L. Charlton, D R. Woodfield, J R. Caradus Apr 2025

Performance Of Trifolium Repens Genotypes Under Grazing In New Zealand Hill Pasture, J.F L. Charlton, D R. Woodfield, J R. Caradus

IGC Proceedings (1977-2023)

A large area of New Zealand's hill country has been developed into pasture during the past 60 years by removal of scrub vegetation, aerial application of superphosphate fertiliser and aerial oversowing of pasture seeds in mixture. The key legume used was white clover (Trifolium repens L.), either as the cultivar Grasslands Huia, or as uncertified seed. Grasslands Tahora white clover was released in 1984, selected from material collected from moist hill pastures (Williams et al., 1983). Farmers sowing white clover into such pastures now have a choice of using Tahora (specifically bred for moist hill pasture, close-grazed by sheep), …

Go to article

Breeding For Increased Stolon Branching And Node Density In White Clover, J R. Caradus, A C. Mackay Apr 2025

Breeding For Increased Stolon Branching And Node Density In White Clover, J R. Caradus, A C. Mackay

IGC Proceedings (1977-2023)

The stoloniferous habit of white clover (Trifolium repens) is an important factor contributing to its agronomic superiority over other herbage legumes in grazed pastures. High stolon density, which ensures good persistence (Gibson et al., 1963) is most often associated with relatively small leaf size and low harvest index (Caradus & Williams, 1981). Stolon density is a product of proportion of nodes branching and internode length. The aim of the present study was to determine, firstly the heritability of nodal branching and internode length and, secondly the relationship between stolon density and other plant characters.

Go to article

Plant Improvement Using Endophytic Fungi, G C.M Latch Apr 2025

Plant Improvement Using Endophytic Fungi, G C.M Latch

IGC Proceedings (1977-2023)

Endophytic fungi which grow intercellularly in many species of grasses have been a scientific curiosity for almost a century. The mycelium of many of these fungi never emerges from the plant and the fungus is disseminated by way of hyphae in the seed. Other endophytes such as Epichloe typhina form a myce­lial weft around the developing inflorescences thus preventing seed formation. Grasses infected with endophytes usually appear healthy and the presence of the fungus can only be detected by examining tissues from leaf, sheath, culms and seed for fungal mycelium. The economic importance of these fungi was first discovered by …

Go to article

Breeding Tall Fescue For Improved Rhizomatous Spreading, I T. Carlson, S M. Hurst Apr 2025

Breeding Tall Fescue For Improved Rhizomatous Spreading, I T. Carlson, S M. Hurst

IGC Proceedings (1977-2023)

Increased rhizomatous spreading may improve persistence and uniformity of tall fescue (Festuca arundinacea Schreb.) stands. The purpose of this research was to investigate possibi­lities of combining long rhizomes from a Portugese accession with adequate winterhardiness and seed production, high tiller density, and rust resistance. Five Portugese selections were crossed with seven more vigorous and winterhardy selections from other accessions, six from the USA and one from Spain. The Fl plants were highly male sterile, but they did set some seed when topcrossed to the adapted cultivar Kentucky 31 or backcrossed to the adapted parent. As a group, topcross (TC) …

Go to article

Characterization Of Genetic Variability Among Accessions And Crosses Of Napiergrass, Pennisteum Purpureum, S C. Schank, R L. Smith, Sandra Russo Apr 2025

Characterization Of Genetic Variability Among Accessions And Crosses Of Napiergrass, Pennisteum Purpureum, S C. Schank, R L. Smith, Sandra Russo

IGC Proceedings (1977-2023)

INTRODUCTION Several herbaceous species have shown promise as feedstocks for energy production. The University of Florida/­Gas Research Institute co-funded program has tested her­baceous species since 1981. Tall grasses such as corn (Zea mays L.), sorghum [Sorghum bicolor (L.) Moench.], napiergrass (Pennisetum purpureum Schum.), and sugarcane (Saccharum spp.) are among the most efficient plants in converting solar energy to biomass (Schank, 1987). All have shown promise as feedstocks for energy production with average annual yields of 20 to 40 metric tons/ha (Prine et al., 1988). However, napier­grass has been selected as having the greatest potential in Florida …

Go to article

Genetic Variation For Rhizome Growth Traits In Elytrigia Repens (L.) Neveski, M D. Casler, W H. Goodwin Apr 2025

Genetic Variation For Rhizome Growth Traits In Elytrigia Repens (L.) Neveski, M D. Casler, W H. Goodwin

IGC Proceedings (1977-2023)

Quackgrass [Elytrigia repens (L.) Nevski] is a common weed in temperate climates throughout most of the world (King, 1966). Its ability to aggressively spread by rhizomes makes it uniquely capable of colonizing large areas of pastures or culti­vated fields (Palmer and Sagar, 1963). Genetic variation among domestic forms of quackgrass has been demonstrated for many traits, including several rhizome growth traits (Westra and Wyse, 1981; Williams, 1973). The objective of this study was to determine selection responses following one cycle of divergent phenotypic selection for plant diameter in a population of Elytrigia repens (L.) Nevski accessions.

Go to article

Non Conventional Evaluation Of Tropical Pasture Accessions, R T. Paterson Apr 2025

Non Conventional Evaluation Of Tropical Pasture Accessions, R T. Paterson

IGC Proceedings (1977-2023)

Many thousands of tropical and sub-tropical grass and legume accessions are to be found in germplasm banks in Australia (Tropical Forages Genetic Resources Centre), Colombia (CIAT), Ethiopia (ILCA) and other countries, but most are poorly categorized in terms of their climatic, edaphic and biotic adaptation. In contrast, a number of ecosystems in the developing world are poorly served with pasture varieties capable of sustaining high levels of animal production. It is likely that such material exists in germplasm collections, but since it has not been tested under a range of conditions, it remains unidentified. There is an urgent need to …

Go to article

Consistency Of Correlation And Path Coefficients Across The Environments In Egyptian Clover (Trifolium Alexandrinum L), G P. Shukla, D R. Malaviya Apr 2025

Consistency Of Correlation And Path Coefficients Across The Environments In Egyptian Clover (Trifolium Alexandrinum L), G P. Shukla, D R. Malaviya

IGC Proceedings (1977-2023)

Forage yield is the resultant of a cumulative effect of its component characters. In the procedure of developing a high forage yielding variety, a determination of major forage yield components appears obligatory for a breeder to gear up an efficient selection programme. Since the manifestations of for­age yield components, expectedly, may vary with the change of situations these were, therefore, worked out across the environments artificially created at a single location (Luthra et al., 1974) in Egyptian clover (Trifolium alexandrinum L.). The consistency of correlations and path was used as a criterion to single out most important yield component(s).

Go to article

Research On Distant Hybridization Between Melissutus Ruthenicus C.W Chang And Medicago Sativa Zhaodong, Wang Diankui, Li Hong, Luo Xinyi Apr 2025

Research On Distant Hybridization Between Melissutus Ruthenicus C.W Chang And Medicago Sativa Zhaodong, Wang Diankui, Li Hong, Luo Xinyi

IGC Proceedings (1977-2023)

Distant hybridization can be used to combine the characteri­stics of different species and genus to produce a new variety. By crossing the wild species Melissutus ruthenicus C.W. Chang (2n = 2x = 16) which exhibits cold-, drought- and salt-alkali resistance with the local high-yielding cultivar Medicago saliva Zhaodong (2 n = 4 x = 32), it was hoped to synthesize the fine characteristics of two parents, to obtain a new intermediate variety of alfalfa. This paper reports on the advance of the hyb­ridization, the results of cytological studies and the tendency of variations of filial generations as a guide to …

Go to article

La Luzerne Aragon, Un Ecotypes Non Depasse En Espangne Par Les Varietes Amerliorees, F Casanas, L Bosch, A M. Claret Verdu Apr 2025

La Luzerne Aragon, Un Ecotypes Non Depasse En Espangne Par Les Varietes Amerliorees, F Casanas, L Bosch, A M. Claret Verdu

IGC Proceedings (1977-2023)

ent en Espagne sont occupes par des ecotypes locaux parmi lesquels le plus important est sans doute !'Aragon. Les varietes ameliorees ne se sont done pas introduites dans le marche espa­gnol. Cela constitue une exception en Espagne puisque pour toutes les autres especes, les cultivars ameliores genetiquement, souvent etrangers, ont remplace presque totalement les popula­tions naturelles. La cause de cette situation exceptionnelle pourrait etre commerciale ( essais d'inscription, campagnes publicitaires, marges beneficiaires, etc.) et/ou que la difference entre !es varietes ameliorees et les populations naturelles espa­gnoles n'est pas assez grande. Les resultats presentes par Hidalgo (1969) sont favorables a la …

Go to article

Selection Du Ray-Grass D’Italie Pour La Tolerance Vis-A-Vis De La Rouille Couronnee, J F. Chosson, Sabine Singla Apr 2025

Selection Du Ray-Grass D’Italie Pour La Tolerance Vis-A-Vis De La Rouille Couronnee, J F. Chosson, Sabine Singla

IGC Proceedings (1977-2023)

En France, le Ray-Grass d'ltalie (Lolium multiflorum Lam.) (RGI) est l'espece de graminees fourrageres la plus utilisee. Pres de 1 million d'hectares sont cultives en pur ou en association avec du trefle violet. Parmi Jes principales maladies foliaires, la Rouille couronnee (Puccinia coronata Corda) (R.C.) occa­sionne des degiits importants sur la plupart des varietes com­mercialisees. Cette etude resume le travail realise par notre Societe pour ameliorer la tolerance du RGI vis-a-vis de ce para­site et montre l'interet du materiel ainsi cree pour !'adaptation a notre milieu, le rendement et la qualite du fourrage.

Go to article

Influence Des Conditions Edapho-Climatiques Sur La Croissance Printaniere De Ray-Grass Anglais De Differentes Precocites, D Leconte, F Balfourier Apr 2025

Influence Des Conditions Edapho-Climatiques Sur La Croissance Printaniere De Ray-Grass Anglais De Differentes Precocites, D Leconte, F Balfourier

IGC Proceedings (1977-2023)

Depuis de nombreuses annees, nous avons observe le mau­vais comportement des varietes tardives implantees sur nos sols froids et humides de fond de vallee. II nous a semble interessant de preciser ces observations en liaison avec notre programme de selection du ray-grass anglais (Lolium perenne).

Go to article

Breeding Guinea Grass (Panicum Maximum Jacq.) For Stall-Feeding, B S. Sidhu, P D. Mehndiratta, R K. Batta Apr 2025

Breeding Guinea Grass (Panicum Maximum Jacq.) For Stall-Feeding, B S. Sidhu, P D. Mehndiratta, R K. Batta

IGC Proceedings (1977-2023)

Punjab is a part oflndo-Gangetic plain with sub-tropical cli­mate. Due to fertile alluvial soil, assured irrigation and small holdings intensive agriculture is in practice. Same plain land is suitable for forage as well as grain production, thus farmers sel­ect to grow which is profitable. Production of milk by stall­feeding of animals on multicut annual summer grasses raised under heavy nitrogen and assured irrigation is relatively econ­omical for the farmers. Thus, a breeding programme on Guinea Grass which responds better to nitrogen than many other summer grasses, was undertaken to develop fast growing annual type which may be cultivated to produce …

Go to article

Yield Trials And Protein Contents Of Five Sudangrass Cultivars In Ahvaz, J Bahrani Apr 2025

Yield Trials And Protein Contents Of Five Sudangrass Cultivars In Ahvaz, J Bahrani

IGC Proceedings (1977-2023)

Sudangrass (Sorghum sudenense Piper Stapf) is one of the most important annual fodder crops in Kuestan plain (Southwest of Iran). The plant has been cropped in the region for more than 25 years. However, the data are scant on the yield potential and management practices of different cultivars under these hot climates where the growing season ranges from 150 to 180 days. Kaschani and Bahrani (1985) in Ahvaz, and Summer et al. (1965) in California, respectively showed 400-600 kg/ha and 178.4 kg/ha of nitrogen as split application for irrigated sudangrass. Worker (1973) found that the total dry matter production of …

Go to article

First Prev Next Last