Plant Biology Commons^™

Forage Productivity Of Flemingia Macrophylla Under Different Planting Density, Defoliation Management And Phosphorus Application In Chitwan, Nepal, Ram Prasad Ghimire, Naba R. Devkota, Kishore Prasad Kayastha

IGC Proceedings (1977-2023)

No abstract provided.

The Economic And Phosphorus‐Related Effects Of Precision Feeding And Forage Management In North Cameroon, A. D. Nkengafac, P. Tinta, G. Ayuk, M. Mansue, F. Fuh

IGC Proceedings (1977-2023)

No abstract provided.

Response Of Spatial Distribution Of Phosphorus In Soil To Wetlands Restoration In Yellow River, Delta Qiuyi Ding, Junhong Bai, Haifeng Gao

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Yearly Simulated Temperature Rise And Nitrogen Deposition On Soil Nutrient In The Songnen Meadow Steppes Of Northeast China, L. J. Hu, D. L. Wang, W. W. Wang, J. X. Guo

IGC Proceedings (1977-2023)

No abstract provided.

Response Of An Improved Pasture To Different Phosphoric Fertilisation Strategies In Basaltic Soils, D. F. Risso, R. Cuadro, A. Morón

IGC Proceedings (1977-2023)

No abstract provided.

Production, Botanical Composition And Nutrient Status Of An Originally Lolium Perenne--Dominant Sward Receiving Long‐Term Manure Applications, Wenju Liu, Y. G. Zhu, P. Christie, A. Scott Laidlaw

IGC Proceedings (1977-2023)

No abstract provided.

Effects Of Phosphate Fertilizer On Regrowth Of Medicago Sativa After Defoliation, Huixin Jiang, Yixin Shen, Guiyu Zhai

IGC Proceedings (1977-2023)

No abstract provided.

Root Phenotypic Plasticity In Response To P Deficiency In Two Tall Fescue Cultivars, Mónica G. Agnusdei, M. J. Martinefsky, A. Mollier, S. Pellerin, Silvia G. Assuero

IGC Proceedings (1977-2023)

No abstract provided.

Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.

A Proposal For Improving Pastures In Subsistence Farming Systems On The East India Plateau, Shivendra Kumar, Ashok Kumar, Peter Stuart Cornish

IGC Proceedings (1977-2023)

The East India Plateau (EIP) experiences deep poverty despite high rainfall (> 1200 mm). Livelihoods, once derived from Sal (Shorea robusta) forest, now depend on agriculture. Subsistence farmers practice monoculture rice-fallow on small, fragmented landholdings (total < 1 ha). Rice in the undulating landscape was traditionally grown in lowland drainage lines (Fig. 1) but population pressure has forced it onto adjacent terraced slopes (medium-uplands) that now comprise > 80% of the rice area (> 50% of land area). Rice is protected from grazing, but the watershed is otherwise grazed as common land with no pasture management. Grazed uplands are often degraded and unproductive, receiving no inputs. Livestock are limited to large animals providing draft power (males) and manure (fuel, compost), and goats for emergency finance.

Rainfall is not the primary …

Effect Of Nitrogen And Phosphorus Application On Productivity, Nutrient Uptake And Quality Of Teosinte (Zea Mexicana L.) Fodder, Magan Singh, A. S. Harika, P. S. Oberoi, Rakesh Kumar

IGC Proceedings (1977-2023)

Teosinte (Zea mexicana L.) is popularly known as Makchari being a close relative of maize. It provides succulent, palatable and nutritive fodder during Kharif season for feeding the animals as green fodder or conserved fodder in the form of silage. Teosinte is an excellent multicut fodder which gives high yield of nutritious green lush fodder in 65-70 days with less inputs as compared to maize. Nitrogen is an essential component of proteins, nucleic acid, enzymes, coenzymes, chlorophyll and cell wall. Phosphorus plays a vital role in crop production as it is involved in CO₂ fixation, sugar metabolism, energy …

What Is The Effect Of Long-Term Cutting Versus Abandonment On The Vegetation And Chemical Properties In The Soil And The Herbage Of A Mountain Hay Meadow (Polygono-Trisetion)?, Pavlů Lenka, Pavlů Vilém, Hejcman Michal, Gaisler Jan

IGC Proceedings (1977-2023)

Polygono-Trisetion meadow communities are endangered in Europe. These meadows are common in the Alps, but in the past, such meadows were also common in the western alpine regions of Central Europe. The aim of our experiment was to find a suitable management regime for the maintenance of these Polygono-Trisetion grasslands and its effect on the vegetation and chemical properties of the soil and in the herbage.

Effects Of Phosphorus Fertilizer Application On Verano Stylo (Stylosanthes Hamata) For Fodder Production In Semi-Arid Nigeria, B. S. Malami, B. Usmani, S. A. Maigandi, A. Singh

IGC Proceedings (1977-2023)

Profitable ruminant livestock production in Nigeria is often constrained by an inadequate. Although natural grazing lands provide most forage for most animals, these pastures like those throughout most of the tropical world, are grossly deficient in energy, crude protein and minerals, particularly during the dry season, and so cannot meet the requirements for meat and milk production (Akinolai et al. 2010). Sown pastures have proved to a valuable technology to improve livestock nutrition. However, a major limitation to the use of sown tropical species is infertile soil. This is certainly the case in the north western region of Nigeria where …

Should Native Pastures Be Fertilised?, Jo I. Powells, Doug J. Alcock, Luke C. Pope, Denys Garden

IGC Proceedings (1977-2023)

Considerable research has been conducted in recent years demonstrating the ongoing benefits of phosphorus (P) fertiliser in achieving and maintaining higher levels of production from native pastures (Graham 2006; Garden et al. 2003; Lodge et al. 2003; Michalk et al. 2003). However Garden et al. (2003), Hill et al. (2004) and Dorrough et al. (2008) all question the sustainability of this practice by highlighting changes in species composition of these pastures with regard to increasing the introduced annual grass and broadleaf weed components at the expense of the native grasses and forbs but in …

Role Of Fires, Herbicides And Fertilizer In Manipulating Shrub/Grass Balance In Mediterranean Grasslands, Zalmen Henkin

IGC Proceedings (1977-2023)

The decline of traditional pastoral systems has highlighted the problem of managing shrub encroachment in shrublands of the Mediterranean region, especially in marginal habitats. Ephemeral grasslands appear after fire in Mediterranean shrub communities on phosphorus-deficient soils, but natural successional processes rapidly led to their dominance. In a study, aimed at reducing the rate of successional change and extending the period of grassland dominance, phosphorus was applied after fire to improve herbaceous growth and two years later the regenerating Sarcopoterium spinosum shrubs were controlled with selective herbicide. Subsequently, the vegetation in the treated areas was monitored for more than 20 consecutive …

The Changing Patterns In Grasslands And Soil Fertility Along The Eastern Eurasian Steppe Transect Across China–Mongolia–Russia, Xiangyang Hou, Leonid Ubugunov, S. Tserendash, Haijun Chen, Wenjun Han, Xiangjun Yun, Ding Yong, Wang Zhen, Lei Ji

IGC Proceedings (1977-2023)

This paper analyses the adaptation and change in species along the north-south Eastern Eurasian Steppe Transect across China – Mongolia – Russia and considers the implications for climate change and management. The plant community diversity, above-ground biomass, N:P ratios of community and of dominant species, soil N (nitrogen), soil P (phosphorus) and AP (available phosphorus) contents were studied along a 1400 km north-south transect. The main findings were: (1) the community diversity and productivity decreased with the increase in latitude and a significant negative correlation was found between the many plant characteristics and latitude (P < 0.05) – decreasing diversity, biomass and N:P ratios; (2) soil AP content was lowest in Inner Mongolia, whereas no significant change in soil total P with latitude was found in China-Mongolia-Russia transect, a significant positive correlation was detected between the soil nutrient (N and AP) and latitude (P < 0.05); (3) a significant positive correlation was evident between plant community P content and soil AP content (P < 0.01), but a negative correlation was found between community N:P ratio and soil AP content (P < 0.05). The soil AP content can be used as a soil properties indicator to reflect the plant communities P content and N: P ratio. It is suggested that greater human activities in Inner Mongolia may be an important factor affecting soil AP content, community N:P and plant growth.

Spatial Variability Of Soil Phosphorus In Grazing Systems, Mark Trotter, Warwick B. Badgery, Joshua Barron, Chris Guppy, Rebecca Haling, David Mitchell, Geoff Millar

IGC Proceedings (1977-2023)

Phosphorus (P) use efficiency has been identified as a key issue for Australian grazing systems. This project examined the spatial variability in soil P concentration from two separate surveys of grazed pasture fields. A field on the central tablelands of NSW had a range in Bray P of 1.2 to 140 mg/kg and a COV of 107%. The other field on the northern tablelands of NSW reported a range in Colwell P from 13.0 to 121.1 mg/kg and a COV of 59%. Maps of the spatial variability of soil P demonstrated that there is a relationship with field elevation. Application …

Effects Of Nitrogen And Phosphorus Fertilizer And Topsoil Amendment On Native Plant Cover In Roadside Revegetation Projects, Heidi L. Hillhouse, Walter H. Schacht, Jonathan M. Soper, Carol E. Wienhold

Department of Agronomy and Horticulture: Faculty Publications

Establishing vegetation on roadsides following construction can be challenging, especially for relatively slow growing native species. Topsoil is generally removed during construction, and the surface soil following construction (“cut-slope soils”) is often compacted and low in nutrients, providing poor growing conditions for vegetation. Nebraska Department of Transportation (NDOT) protocols have historically called for nitrogen (N) and phosphorus (P) fertilization when planting roadside vegetation following construction, but these recommendations were developed for cool-season grass plantings and most current plantings use slower-establishing, native warmseason grasses that may benefit less than expected from current planting protocols. We evaluated the effects of nitrogen and …

Arbuscular Mycorrhizal Fungi Differ In Their Ability To Regulate The Expression Of Phosphate Transporters In Maize (Zea Mays L.), Hui Tian, Rhae A. Drijber, Xiaolin Li, Daniel N. Miller, Brian J. Wienhold

Department of Agronomy and Horticulture: Faculty Publications

Previous studies have found that some phosphate (Pi) starvation inducible transporter genes are downregulated and arbuscular mycorrhizal (AM) inducible Pi transporter genes are upregulated in maize roots associated with the fungus Glomus intraradices. However, little is known about the functional diversity of different AM fungal species in influencing the expression of Pi transporters in maize roots. Here, we studied the expression of two Pi transporter genes ZEAma:Pht1;3 (Pi starvation inducible) and ZEAma:Pht1;6 (AM inducible) in maize root colonized by different AM fungal inoculants. Non-mycorrhizal maize, maize colonized by Glomus deserticola (CA113), Glomus intraradices (IA506), Glomus mosseae (CA201), Gigaspora gigantea …

Crop Updates 2011 - Cereals, David Bowran, Bill Crabtree, Peter Carberry, Peter Burges, Bevan Buirchell, Ben Curtis, Sarah Ellis, Brenda Shackley, Christine Zaicou, Siva Sivapalan, Penny Goldsmith, Gae Plunkett, Darshan Sharma, Mario D'Antuono, Art Diggle, Peter Mangano, Sally Peltzer, Michael Renton, Bill Macleod, Fumie Horiuchi, George Wyatt, Geoff Anderson, Richard Bell, Ross Brennan, Wen Chen, Penny Riffkin

Crop Updates

This session covers eleven papers from different authors:

OPENING, NEW CROP VARIETIES & DECISION SUPPORT

Opening

1. Overview of the 2010 season, David Bowran, Director, Practice and Systems Innovation, Department of Agriculture and Food,

2. My experience in a drought as a farmer and consultant, Bill Crabtree, Morawa, Western Australia

3. Meeting the productivity and sustainability challenges to Australian agriculture until 2030, Peter Carberry, CSIRO Sustainable Agriculture Flagship

New Crop Varieties

4. National Variety Trials (NTV) wheat variety performance – captivity vs broadacre, Peter Burgess, Kalyx Agriculture

5. WALAN2289 – a new lupin variety to replace …

Crop Updates 2010 - Crop Specific, Hugh J. Beckie, Wallace Cowling, T. N. Khan, K. Adhikari, K. Siddique, J. Garlinge, L. Smith, S. Morgan, C. Boyd, Ian Pritchard, Chris Veitch, Alan Harris, Tony Leonforts, Murray Blyth, Shari Dougal, Kristy Hobson, Ben Curtis, Doug Sawkins, D. Stephens, Ciara Beard, Kith Jayasena, Kazue Tanaka, Anne Smith, Brenda Coutts, Roger Jones, Jean Galloway, Pip Payne, Tess Humphreys, William Macleod, Ravjit Khangura, M. Aberra, H. Mian, Geoff Thomas, Dusty Severtson, Peter Mangano, Monica Kehoe, Madeline A. Tucker, Neil Barker, Robert Loughman, Larisa Cato, Ken Quail, Mohammad Amjad, Mark Seymour, Justin Kudnig, Mark Thompson, Anton Mannes, Michael Uttley, Chris Fletcher, Andrew Etherton, Nick Joyce, Kate Light, Peter Hamblin, Michael Lamond, Alan Meldrum, Wayne Parker, Steve Penny Jr, Sarah Ellis, Brenda Shackley, Christine Zaicou, Shajahan Miyan, Darshan Sharma, Ben Curtis, Greg Shea, Bevan Buirchell, David Harris, Bob French

Crop Updates

This session covers twenty four papers from different authors:

PLENARY

1. Challenges facing western Canadian cropping over the next 10 years, Hugh J Beckie, Research Centre, Agriculture and Agri-Food Canada, Saskatoon,

Saskatchewan

CROP SPECIFIC

Breeding

2. The challenge of breeding canola hybrids – new opportunities for WA growers, Wallace Cowling, Research Director, Canola Breeders Western Australia Pty Ltd

3. Chickpea 2009 crop variety testing of germplasm developed by DAFWA/CLIMA/ICRISAT/COGGO alliance. Khan, TN1,3, Adhikari, K1,3, Siddique, K2, Garlinge, J1, Smith, L1, Morgan, S1 and Boyd, C1 1Department …

Crop Updates 2010 - Genetically Modified Crops, Nutrition And Soils, James Fisher, Désirée Futures, Peter Tozer, Mike Jackson, John Moore, Jamees Neilsen, Geoff Anderson, Wen Chen, Richard Bell, Paul Blackwell, Allan Herbert, Stephen Davies, Ross Brennan, Mike Bolland, James Easton, Ryan Guthrie, Rowan Madderm, Robert Belford, Wal Anderson, Ian Edwards, Reg Lunt, Bill Bowden, Nigel Metz, Peter Newman, Breanne Best, Chris Gazey, Joel Andrew

Crop Updates

GENETICALLY MODIFIED CROPS

1. Evaluation of the environmental and economic impact of Roundup Ready® canola in the Western Australian crop production system, James Fisher and Désirée Futures, York, Western Australia, Peter Tozer, PRT Consulting, Armidale NSW

2. Controlling wild radish (Raphanus raphanistrum) in Roundup Ready®¹ Canola: Outcomes from the Nufarm 2009 Roundup Ready small plot trial Program, Mike Jackson, Nufarm Australia Limited

3. Weed strategies for glyphosate tolerant crops, John Moore, Department of Agriculture and Food

4. Results of the 2009 Western Australia Roundup Ready® canola trials, Dr James Neilsen, Canola Systems …

Crop Updates 2005 - Cereals, Darshan Sharma, Brenda Shackley, Mohammad Amjad, Christine M. Zaicou-Kunesch, Wal Anderson, D. Tennant, Steve Penny Jr, Ben Curtis, Veronika Reck, Richard Richards, Gavin Knell, Steve Curtin, David Sermon, Alan Bedggood, T. B. Biddulph, T. L. Setter, J. A. Plummer, D. J. Mares, H. Khabaz-Saberi, I. Waters, G. Mcdonald, Harmohinder Dhammu, David Nicholson, Chris Roberts, Stephen Loss, Ross Brennan, Kithsiri Jayasena, Eddy Pol, Simon Teakle, Rob Loughman, Ciara Beard, Blakely Paynter, K. Tanaka, G. Poulish, A. Smith, Paul Damon, Zed Rengel, Lionel Martin, Narelle Hill, Ron Mctaggart, Ray Tugwell, Geoff J. Thomas, Manisha Shankar, John Majewski, D. Foster, H. Golzar, J. Piotrowski, Rob Grima, Jeff Russell, Angie Roe, Vivien A. Vanstone, Sean Kelly, Helen Hunter, Mena C. Gilchrist, C. R. Newman, Svetlana Micic, Phil Michael, Gabrielle Coupland, Ern Kostas, Mohammed Hamza, Tina Botwright Acuña, Len Wade, Ingrid Richardson

Crop Updates

This session covers thirty six papers from different authors:

WHEAT AGRONOMY

1. Optimum sowing time of new wheat varieties in Western Australia, Darshan Sharma, Brenda Shackley, Mohammad Amjad, Christine M. Zaicou-Kunesch and Wal Anderson, Department of Agriculture

2. Wheat varieties updated in ‘Flowering Calculator’: A model predicting flowering time, B. Shackley, D. Tennant, D. Sharma and C.M. Zaicou-Kunesch, Department of Agriculture

3. Plant populations for wheat varieties, Christine M. Zaicou-Kunesch, Wal Anderson, Darshan Sharma, Brenda Shackley and Mohammad Amjad, Department of Agriculture

4. New wheat cultivars response to fertiliser nitrogen in four major agricultural regions of Western Australia, Mohammad Amjad, …

Crop Updates 2005 - Farming Systems, David Stephens, Nicola Telcik, Ross Kingwell, Wayne Pluske, Bill Bowden, Mike Collins, Frances Hoyle, D. V. Murphy, N. Milton, M. Osman, L. K. Abbott, W. R. Cookson, S. Darmawanto, Bill Crabtree, Geoff Anderson, Darren Kidson, Ross Brennan, Nick Drew, Craig Scanlan, Lisa Sherriff, Bob French, Reg Lunt, Jeff Russell, Angie Roe, Ian Maling, Matthew Adams, George Yan, Mohammad Hamza, Glen Riethmuller, Wal Anderson, Angela Loi, Phil Nichols, Clinton Revell, David Ferris, Phil Ward, Andrea Hills, Sally-Anne Penny, David Hall, Michael Robertson, Don Gaydon, Tress Walmsley, Caroline Peek, Megan Abrahams, Paul Raper, Richard O'Donnell, Trevor Lacey, Meredith Fairbanks, David Tennant, Cameron Weeks, Richard Quinlan, Alexandra Edward, Chris Carter, Doug Hamilton, Peter Tozer, Renaye Horne, Tracey Gianatti, Paul Carmody, Ian Foster, Michele John, Ross George, Imma Farré, Ian Kininmonth, Dennis Van Gool, Neil Coles, Bill Porter, Louise Barton, Richard Harper, Peter Ritson, Tony Beck, Chris Mitchell, Michael Hill, Fiona Barker-Reid, Will Gates, Ken Wilson, Rob Baigent, Ian Galbally, Mick Meyer, Ian Weeks, Traci Griffin, D. Rodriguez, M. Probust, M. Meyers, D. Chen, A. Bennett, W. Strong, R. Nussey, I Galbally, M. Howden

Crop Updates

This session covers forty four papers from different authors:

PLENARY

1. 2005 Outlook, David Stephens and Nicola Telcik, Department of Agriculture

FERTILITY AND NUTRITION

2. The effect of higher nitrogen fertiliser prices on rotation and fertiliser strategies in cropping systems, Ross Kingwell, Department of Agriculture and University of Western Australia

3. Stubble management: The short and long term implications for crop nutrition and soil fertility, Wayne Pluske, Nutrient Management Systems and Bill Bowden, Department of Agriculture

4. Stubble management: The pros and cons of different methods, Bill Bowden, Department of Agriculture, Western Australia and Mike Collins, …

Crop Updates 2003 - Cereals, Graham Crosbie, Robert Loughman, Collin Wellings, Greg Shea, Simon Mckirdy, Neil C. Turner, Brenda Shackley, Wal Anderson, Darshan Sharma, Mohammad Amjad, Steve Penny Jr, Melanie Kupsch, Anne Smith, Veronika Reck, Pam Burgess, Glenda Smith, Elizabeth Tierney, Peter Burges, Moin U. Salam, Megan Collins, Art Diggle, Blakely Paynter, Roslyn J. Jettner, Kevin Young, Jocelyn Ball, Natasha Littlewood, Lucy Anderton, Irene Waters, Tim Setter, Jeff Russell, Reg Lance, Chengdao Li, Sue Broughton, Michael Jones, Grace Zawko, Keith Gregg, Stephen Loss, Frank Ripper, Ryan Guthrie, Daniel Bell, Patrick Gethin, Narelle Hill, Laurence Caeslake, Vivien Vanstone, Sean Kelly, Helen Hunter, Christopher R. Newman

Crop Updates

This session covers twenty one papers from different authors:

PLENARY

1. Recognising and responding to new market opportunities in the grains industry, Graham Crosbie, Manager, Grain Products Research, Crop Breeding, Plant Industries, Department of Agriculture

2. Stripe rust – where to now for the WA wheat industry? Robert Loughman¹, Colin Wellings² and Greg Shea¹¹Department of Agriculture, ²University of Sydney Plant Breeding Institute, Cobbitty (on secondment from NSW Agriculture)

3. Benefits of a Grains Biosecurity Plan, Dr Simon McKirdy, Plant Health Australia, Mr Greg Shea, Department of Agriculture

4. Can we improve …