Nitrogen Application Enhances The Radiation Use Efficiency And Quality Of Cotton (Gossipum Hirsutum L.) Under Divergent Agro-Ecological Conditions Of Pakistan,
2025
Department of Agronomy, College of Agriculture, University of Sargodha, Pakistan
Nitrogen Application Enhances The Radiation Use Efficiency And Quality Of Cotton (Gossipum Hirsutum L.) Under Divergent Agro-Ecological Conditions Of Pakistan, Amjed Ali, Safdar Hussain, Wajid Nazeer, Muhammad Sarwar, Masood Qadir, Mubashar Nadeem, Javeria Sherani
Journal of Bioresource Management
Cotton being a cash crop plays a pivotal role in the economy of Pakistan. Climate change has a pronounced impact on radiation use efficiency and quality of cotton fiber. To find out how nitrogen affected the radiation use efficiency and fiber quality of cotton cultivars in Punjab, a field study using a split-plot design was carried out. The study under representation was conducted in three different locations over the course of two years (2016 and 2017): Adaptive Research Farm in Dera Ghazi Khan, The Regional Agriculture Research Institute, Bahawalpur and The College of Agriculture, University of Sargodha. Three cotton cultivars …
A Case Of Milkweed Poisoning In Cattle In Colorado,
2025
Colorado State University - Western Slope Veterinary Diagnostic Laboratory
A Case Of Milkweed Poisoning In Cattle In Colorado, Raye Walck, Brett Webb, Steve Ensley, Daniel Cook
Poisonous Plant Research (PPR)
Milkweeds, Asclepias spp., are herbaceous perennials of the Apocyanaceae family. Milkweeds contain several cardiac glycosides, cardenolides, that are toxic. Clinical signs associated with milkweed toxicity are generalized weakness, difficulty in breathing, rapid weak pulse, bloating, violent spasms, paralysis, and death. Here we report a clinical case of milkweed toxicity in cattle due to contaminated hay. Clinical signs observed in the poisoned animals were consistent with cardenolide toxicity. Milkweed was detected in the rumen contents of the poisoned cow using DNA metabarcoding. In summary, multiple lines of corroborative evidence were used to make the diagnoses of milkweed poisoning in this case.
Harvest Management And Regrowth Of Trifolium Alexandrinum,
2025
Louisiana State University
Harvest Management And Regrowth Of Trifolium Alexandrinum, R E. Joost, J D. Mooso
IGC Proceedings (1977-2023)
Adaptation of berseem clover (Trifolium alexandrinum) beyond the coastal regions of the southeastern United States was limited by a lack of cold tolerance prior to the release of 'Bigbee', a selection from a stand of 'Sacromonte' subjected to temperature of -15 and -18 Con successive nights in 1972. The release of Bigbee in 1985 expanded the range of berseem clover adaptation to include the entire Southeast, as far north as Oklahoma (Knight, 1985). It is known that annual clovers do not rely on root reserve carbohydrates, but rather on residual leaf area and rapid leaf regeneration from active …
Impact Of Glufosinate On Sugarcane Yield And Yield Components When Applied Post-Directed And Its Efficacy In Controlling Emerged Itchgrass (Rottboellia Cochinchinensis),
2025
Louisiana State University and Agricultural and Mechanical College
Impact Of Glufosinate On Sugarcane Yield And Yield Components When Applied Post-Directed And Its Efficacy In Controlling Emerged Itchgrass (Rottboellia Cochinchinensis), Warner R. Simon
LSU Master's Theses
Weed control is extremely important in the Louisiana sugarcane (Saccharum spp.) industry, as it is a perennial crop that grows back after each harvest. Fields are kept weed free using mechanical and chemical methods to prevent weed-crop competition and further establishment of weed populations. The weed itchgrass (Rottboellia cochinchinensis) has become problematic for Louisiana sugarcane producers. Sometimes, itchgrass can still emerge after farmers have made a pre-emergence (PRE) herbicide application. These weeds are usually controlled using the herbicide paraquat dichloride (paraquat) in post-emergence (POST) directed applications. In recent year, 2016-2024, the United States Environmental Protection Agency …
Variation In Response To Phosphorus Among Sweetpotato (Ipomoea Batatas L.) Cultivars,
2025
Louisiana State University and Agricultural and Mechanical College
Variation In Response To Phosphorus Among Sweetpotato (Ipomoea Batatas L.) Cultivars, Jeffrey Cole Denis Gregorie
LSU Doctoral Dissertations
Phosphorus (P) is essential for plant growth and is often a major limiting nutrient in agriculture. In sweetpotato (Ipomoea batatas), studies on the role of P on storage root yield have been limited because of the lack of response and inconsistent results across cultivars and years. Growing evidence shows that current phosphate (Pi) fertilizer rates can be reduced while maintaining productivity. Newly published molecular evidence shows differential expression of phosphate starvation response genes among sweetpotato cultivars, further supporting the hypothesis of cultivar-specific Pi sensitivity. The research herein sought to characterize root system architecture and yield response to Pi …
Closing Ceremony Speech,
2025
University of Kentucky
Closing Ceremony Speech, S. Ray Smith
IGC Proceedings (1977-2023)
No abstract provided.
Soil Compaction And Novel Traffic Systems In Ryegrass Grown For Silage: Effects On Herbage Yield, Quality And Nitrogen Uptake,
2025
Scottish Centre of Agricultural Engineering
Soil Compaction And Novel Traffic Systems In Ryegrass Grown For Silage: Effects On Herbage Yield, Quality And Nitrogen Uptake, J T. Douglas, C E. Crawford
IGC Proceedings (1977-2023)
Grassland soils, on which the crop is managed for conservation as silage, receive large amounts of vehicle and machinery traffic : rolling and multiple slurry and fertilizers applications, plus multiple harvests, are all activities which are potentially damaging to soil and sward. A number of short-term studies in the UK (Frame, 1987 and Frost, 1988) and elsewhere (Luten and Roozeboom, 1976, and Rasmussen and M¢ller, 1981) have indicated that dry matter yield can be reduced as a consequence of stress imparted to soil by agricultural tyres. Nevertheless, there is a general lack of information on the influence of soil compaction …
Contribution Of Red Clover To Maize Grain Yields,
2025
Purdue University
Contribution Of Red Clover To Maize Grain Yields, K D. Johnson, D K. Greene, J H. Cherney
IGC Proceedings (1977-2023)
Renewed emphasis has been placed on crop rotation systems that include a perennial legume. Reasons for this interest include protection of soil from erosion, protection of ground water from nitrate contamination, reduction of soil compaction, and potential for fewer inputs which could reduce costs of grain production. Barnes et al. (1985) reported that a nondormant alfalfa (Medicago sativa L.) selected for increased Nin the root and crown had similar summer herbage yield as adapted dormant cultivars, but provided 62 % more symbiotically fixed N for a following crop than dormant cultivars. If most benefit is to be derived from cultivars …
Analysis Of The Effect On N Nutrition On Dry Matter Yield Of A Sward By Reference To Potential Yield And Optimum N Content, G Lemaire, F Gastal, J Salette
IGC Proceedings (1977-2023)
Previous work has shown that the N content of a sward could be related to the dry matter accumulation during the course of the regrowth by the following equation : N % = a(Wtb, where W is the weight of aboveground biomass and N % the N concentration of dry matter (Salette & Lemaire, 1981). The coefficient a represents the N % for an aerial biomass of I t/ha, and b characterizes the degree of dilution of N during the regrowth. When b = 0, N % remains constant during the regrowth. If b = I, there is an increase …
Nitrogen Fixation In Mixed Pastures Under Two Grazing Intensities,
2025
CONICET-INTA
Nitrogen Fixation In Mixed Pastures Under Two Grazing Intensities, R O. Refi, C A. Navarro, C J. Escuder
IGC Proceedings (1977-2023)
In the Humid Pampa, 10 millions of ha present intrazonal hydromorphic alkaline soils with low P assimilable content and cyclic floods and droughts. Gramineous native ranges utilized for extensive cattle raising with low productivity levels occupy 70 % of the area. The lack of adapted legume and grass genotypes and little information about grazing management makes it difficult to increase production through implanted pastures due to their low persistence (Darwich and Gonzalez, 1982). To modify this situation an interdisciplinary study of four forage mixtures integrated by promising germplasm for that conditions was carried out. This paper is part of that …
Strategies Of Fertilizer Nitrogen Applications To Grassland For Beef: Effects On Production And Soil Mineral Nitrogen, N M. Titchen, R J. Wilkins, L Philipps, D Scholefield
IGC Proceedings (1977-2023)
Experiments in Britain have shown beef production increases with fertilizer-N application to grazed grassland up to at least 300 kg N/ha (Wilkins et al., 1987; Baker and Mayne, 1988). However in view of the small offtake of N in the animal products (c.30 kg/ha) there is increased concern on the fate of the applied N, particularly in relation to loss of nitrate by leaching (Garwood and Ryden, 1986). This paper reports a 3-year experiment which examined the impact on production and on N movements of different strategies of fertilizer-N application and of the effects of removing grazing livestock at the …
Biomass Production And Nitrogen Transfer In Mixed Cropping With Glycine Max (L) Merr. And Sorghum Biocolor Moench,
2025
Hiroshima University
Biomass Production And Nitrogen Transfer In Mixed Cropping With Glycine Max (L) Merr. And Sorghum Biocolor Moench, S Ogata, K Kuwata, H Saneoka, K Fujita
IGC Proceedings (1977-2023)
It is well known that the mixed-cropping of legumes and grasses benefits the productivity and management of pastures (Ogata et al., 1986; Kawamoto et al., 1983). However, the effect of mixed-croppings on forage biomass production, and how to transfer N fixed to the associated gramineous plants in fields of low N fertility, is less well known (Simpson, 1965). The N accumulation and the transference ofN fixed in mixtures of forage type soybean and sorghum were studied as a model system.
Changes In Vegetation Of Various Meadows Under Differential Mineral Fertilization,
2025
Academy of Agriculture and Technology
Changes In Vegetation Of Various Meadows Under Differential Mineral Fertilization, S Benedycki, S Grzegorczyk, M Mlynarczyk, K Grabowski
IGC Proceedings (1977-2023)
Permanent meadows and pastures occurring in the Mazurian Lake District (North-eastern part of Poland) constitute 32 % of arable lands. Most meadows are situated on peat soils (Olkowski, 1972). Continuous and successive changes take place in such populations. The moment some species decline, the number of others increases which are better adjusted to site conditions or human activity such as fertilization and the way of land use. These changes occur with different intensity depending on fertilizer doses, land use and site conditions which have not been well recognized with regard to permanent meadows (Olkowski and Olesinski, 1976, Eilart, 1986). Determination …
Developing Effective Nutrient Seed Coatings For Grasses And Legumes,
2025
University of New England
Developing Effective Nutrient Seed Coatings For Grasses And Legumes, J M. Scott
IGC Proceedings (1977-2023)
Seed coatings provide a unique opportunity to supply developing seedlings with a source of nutrients to which each sown seedling has preferential access compared to neighbouring weeds, thus providing the seedlings with a competitive advantage during pasture establishment. A study of commercially prepared nutrient coatings (containing nitrogen [NJ, phosphorus [P] and sulfur [SJ) applied to seeds of perennial ryegrass showed that whilst the S component of the coating was effective, the P component was only partially effective, and the N component was ineffective in alleviating the respective soil nutrient deficiencies (Scott et al., 1985). The successful development of nutrient seed …
The Impact Of Renovation And Phosphate Fertilization On The Productivity Of Pastures In Uruguay,
2025
Estacion Experimental La Estanzuela
The Impact Of Renovation And Phosphate Fertilization On The Productivity Of Pastures In Uruguay, J A. Garcia
IGC Proceedings (1977-2023)
Natural grasslands in Uruguay produce low yields of poor quality herbage and therefore intensive farming is based upon sown pastures of temperate species. Although quite productive, these pastures show high instability and after reaching a peak in the second year, herbage yields rapidly go down due to a consistent legume decline. They usually end up in the fourth year in a low producing grassy sward dominated by perennial grasses like tall fescue or by bermudagrass which is endemic in the cropping/pasture area. Thee lack of persistence is also common to other countries of the region and although the effects of …
Sur Les Teneurs En Molybedne Des Plantes Fourrageres Des Sols Liasiques Du Bassigny - Consequences Zootechniques,
2025
Institut National de la Recherche en Agronomique
Sur Les Teneurs En Molybedne Des Plantes Fourrageres Des Sols Liasiques Du Bassigny - Consequences Zootechniques, L Duval
IGC Proceedings (1977-2023)
En 1943, Ferguson et ses collaborateurs mirent en evidence que la teneur elevee en molybdene des plantes fourrageres est la cause d'une maladie des ruminants appelee scouring ou teartness et observee par Clarke (1855) sur les sols liasiques du Somerset (Grande-Bretagne); ils montrerent aussi que cette • intoxication molybdique ou molybdenose est prevenue et guerie par !'ingestion de cuivre (Ferguson et al., 1943). En France, c'est aussi sur des sols liasiques que des cas aigus de molybdenose ont ete identifies par Fretet (1959), a Is-enBassigny (Haute-Marne). Des determinations, effectuees par Flon (1968), confirmerent !'existence de teneurs elevees en molybdene clans …
Effects Of Changes In Fertilizer Use On The Composition And Productivity Of Permanent Grassland In Relation To Agricultural Production And Floristic Diversity, R J. Wilkins, A Hopkins, F W. Kirkham, C Sargent, O Mountford, C Dibb, J Gilbey
IGC Proceedings (1977-2023)
More than 50 % of enclosed grassland in Britain comprises swards older than 20 years. There is much variation both in fertiliser inputs and in stocking rates, with the trend for increased intensity in use over the last 40 years now being succeeded by increased concern for nature conservation and the protection of the environment. In some areas financial incentives are given for the adoption of management practices intended to increase sward botanical diversity, but there is little information on the rates of change in botanical diversity and production as the management of an old sward is changed with either …
Phosphorus Requirement For Establishment Of Tropical Forage Grasses And Legumes,
2025
Universidade Federal de Vicosa
Phosphorus Requirement For Establishment Of Tropical Forage Grasses And Legumes, J A. Gomide
IGC Proceedings (1977-2023)
Soil phosphorus level is a limiting factor for successfull forage establishment which, in turn, determines pasture productivity. Recommendations of P fertilization should not only be based on the available PO4 but should consider the soil P04 buffer capacity and the P critical value for the crop to be grown (Novais and Kamprath, 1979). This study aimed at the determinations of P critical doses and levels for the establishment of four species of Brachiaria and four tropical legumes, in five soils.
F.A.O Design K*B*P Trials In The Mid-Altitude Zone Of Yunnan Province, Southern China,
2025
AACM
F.A.O Design K*B*P Trials In The Mid-Altitude Zone Of Yunnan Province, Southern China, J Bruce-Smith, Yang Guo-Rong, Huang Bi-Zhi, Li Ji-Xin
IGC Proceedings (1977-2023)
The Project is investigating the development of « improved pastures » as a practical way to increase ruminant livestock production. Some preliminary results of fertilizer requirements, indicated that K and B may be required as well as P (Wang el al., 1985) for the establishment of such pastures in this mid-altitude (2,000 m) transitional sub-tropic-temperate zone of Yunnan. The objective of this paper is to present some experiences from applying the Hauser (1971) truncated factorial design trials (widely used by FAO to obtain N, P, K, fertilizer recommendations for cereal crops) to a pasture establishment situation where P. K and …
The Effects Of Reducing Or Stopping Fertilizer On New Zealand Dairy Pastures,
2025
MAFTech, NZ
The Effects Of Reducing Or Stopping Fertilizer On New Zealand Dairy Pastures, M B. O'Connor, C Feyter, A.H C. Roberts
IGC Proceedings (1977-2023)
New Zealand agriculture with its reliance on legume-based pastures to supply nitrogen has a requirement for fertilizer inputs of phosphorus, sulphur, potassium and to a lesser extent, magnesium and various trace elements. The soils in the two main dairying regions of New Zealand (Waikato, Taranaki) are formed from volcanic ash parent material and are highly P retentive. Traditionally dairy pastures on such soils have been developed using heavy applications of P.K.S. fertilizers (750-1000 kg.ha-1 .year-1). Such rates have often continued for 10-20 years or more and scientists have repeatedly questioned the need for continued high inputs of fertilizer (Hutton, 1977; …
