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

Life Sciences Commons

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

Growth

Plant Sciences

Institution
Publication Year
Publication
Publication Type
File Type

Articles 1 - 30 of 109

Full-Text Articles in Life Sciences

Effects Of Nitrogen On The Growth Of Hyparrhenia Diplandra, J Nkandza Apr 2024

Effects Of Nitrogen On The Growth Of Hyparrhenia Diplandra, J Nkandza

IGC Proceedings (1997-2023)

The nitrogen effects on Hyparrhenia diplandra were studied. Plants were grown on nutrient solutions of variable concentrations in nitrogen. The supplied nitrogen increased tillering, leaf production, lamina area, total dry matter accumulation and total nitrogen accumulation in lamina. A detailed examination showed that the effect on tillering was the main cause of the differences observed in dry weights between different treatments. The nitrogen supply elongated significantly the lamina and nitrogen deficiency increased its thickness; but this was not enough to compensate the loss of weight in lower nitrogen treatment. The lamina area as well as nitrogen accumulation in the lamina …


Leaf Growth And Anatomy During Winter Droughting Of Tetrachne Dregei Plants, M G. Klich, R E. Brevedan, H Laborde Apr 2024

Leaf Growth And Anatomy During Winter Droughting Of Tetrachne Dregei Plants, M G. Klich, R E. Brevedan, H Laborde

IGC Proceedings (1997-2023)

The purpose of this work was to study the leaf growth and anatomy of Tetrachne dregei plants when they were subjected to a winter drought period. Plants were grown in semicontrolled conditions under two soil moisture regimes: irrigated and non-irrigated. Anatomical characterization was made using optical and scanning electron microscopy. No differences were found in stomatal index, stomatal length and epidermal cell size, between irrigated and non-irrigated plants. The adaxial epidermis of water stressed plants was more pubescent. Leaf abaxial epidermis of non-irrigated plants showed more intercostal plates of crystallized epicuticular wax than that of the irrigated ones. Leaf tissue …


Partitioning Of Phosphorus In White Clover Populations With Different Nodulation Patterns, J R. Crush Apr 2024

Partitioning Of Phosphorus In White Clover Populations With Different Nodulation Patterns, J R. Crush

IGC Proceedings (1997-2023)

The objective of this study was to see if a white clover (Trifolium repens L.) population selected for development of relatively few, but large nodules, differed in the way it used absorbed phosphorus, compared to a white clover population selected for many small nodules. Plants of both populations were grown in minus-nitrogen sand culture and the dry weights and phosphorus contents of shoots, roots and nodules were measured. There were no differences in growth or partitioning of dry matter or phosphorus between the clover lines.


Evaluation Of Mulberry Leaf Meal Feeding On The Growth And Hematological Profile Of Cross Bred Heifers, Rohit Bishist, Irfana Quadiri, Krishan Lal Gautam, Kamal Kishore Feb 2024

Evaluation Of Mulberry Leaf Meal Feeding On The Growth And Hematological Profile Of Cross Bred Heifers, Rohit Bishist, Irfana Quadiri, Krishan Lal Gautam, Kamal Kishore

IGC Proceedings (1997-2023)

Mulberry (Morus alba) is a multipurpose fodder tree with a high voluntary intake. Mulberry foliage is characterized by high digestibility and excellent level of protein which makes it comparable to commercial concentrates for dairy cattle. o evaluate the effect of dietary inclusion of mulberry leaf meal as a concentrate replacement (20%) in the crossbred heifers ration the present investigation was carried out at dairy farm Dr YSPUHF Nauni Solan. In the study, a total of 12 cross bred heifers (1-2 yr) were divided into two equal groups of 6 animals each, on the basis of body weight. The …


Morphogenesis Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, I. I. Silva, L. V. D. Ribeiro, M. S. Soares, T. P. Evangelista Jan 2024

Morphogenesis Of Marandu Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, V. L. Banys, I. I. Silva, L. V. D. Ribeiro, M. S. Soares, T. P. Evangelista

IGC Proceedings (1997-2023)

Nitrogen fertilization contributes to grass growth and, for this reason, the objective was to evaluate the morphogenic characteristics of Urochloa brizantha cultivar Marandu subjected to different nitrogen rates (0, 50, 100 and 150 kg N.ha-1) in the Brazilian savannah through the variables number of leaves.tiller-1, leaf growth, leaf average size, senescent leaf.tiller-1 number and stem+pseudostem average size. The experiment was established in the Forage and Pastures Sector of Jatai Federal University (UFJ) and, after the soil correction and fertilization, the Marandu grass plots were installed in a randomized blocks experimental design, with four treatments and …


Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw Aug 2023

Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw

IGC Proceedings (1997-2023)

Grass budgeting is a key management practice on dairy farms to balance grass supply on paddocks with grass demand by the grazing herd. Grass budgets must be pre-emptive to be effective. The uncertainty of grass production and the difficulty in quantifying both current and forecasted rates of growth hamper effective budgeting and paddock management. Grass growth rates are highly variable both in time and space. Therefore, they vary greatly between locations at any given time and also across the season at any given location. Figure 1 shows the pattern of growth rates recorded at the Agricultural Research Institute of Northern …


Managing The Reproductive Development Of Grasses By Grazing Practices, J. P. Theau, L. Chazelas, P. Ansquer, J. Viegas, O. Stefanini, M. L. Petit, P. Cruz, Michael Duru Jun 2023

Managing The Reproductive Development Of Grasses By Grazing Practices, J. P. Theau, L. Chazelas, P. Ansquer, J. Viegas, O. Stefanini, M. L. Petit, P. Cruz, Michael Duru

IGC Proceedings (1997-2023)

Grazing natural grassland communities is necessary for both productive (feeding herbivores) and environmental (maintenance of open landscapes) objectives. Management guidelines should take into account the functional diversity of plant species between and within grassland communities. The management of the heading stage of grasses by grazing is an important tool to maintain acceptable forage quality and to avoid the seeding of low-valued species. The heading stage should be managed even in extensive systems and this needs a good knowledge of the phenological development of dominant species. In this work we illustrate the approach through the study of the development of four …


Effects Of Forage Chicory (Cichorium Intybus) On Farmed Deer Growth And Internal Parasitism, S. O. Hoskin, P. R. Wilson, W. E. Pomroy, T. N. Barry Apr 2023

Effects Of Forage Chicory (Cichorium Intybus) On Farmed Deer Growth And Internal Parasitism, S. O. Hoskin, P. R. Wilson, W. E. Pomroy, T. N. Barry

IGC Proceedings (1997-2023)

Internal parasitism (particularly lungworm - Dictyocaulus sp) significantly limits post-weaning growth of deer. Endoparasite control using anthelmintics may be unsustainable, due to the increasing risk of anthelmintic resistance and the risk or perception of chemical residues in animal products. Chicory has a high feeding value and contains sesquiterpene lactones and low levels of condensed tannins, both with anti-parasitic activity (Molan et al., 2003). Grazing chicory during autumn may reduce the requirement for anthelmintic treatment of young deer compared with grazing ryegrass-based pasture (Hoskin et al., 1999). The objective of this study was to investigate the effect of withholding …


Qtls For Morphogenetic Traits In Medicago Truncatula, B. Julier, T. Huguet, J. M. Prosperi, P. Barre, Christian Huyghe, G. Cardinet Mar 2023

Qtls For Morphogenetic Traits In Medicago Truncatula, B. Julier, T. Huguet, J. M. Prosperi, P. Barre, Christian Huyghe, G. Cardinet

IGC Proceedings (1997-2023)

Plant morphogenesis that includes growth, development and flowering date, drives a large number of agronomical important traits in both grain and forage crops. Quantitative trait locus (QTL) mapping is a way to locate zones of the genome that are involved in the variations observed in a segregating population. Co-location of QTLs and candidate genes is an indication of the involvement of the genes in the variation. The objective of this study was to analyse segregation of aerial morphogenetic traits in a mapping population of recombinant inbred lines of the model legume species M. truncatula , to locate QTLs and candidate …


Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw Feb 2023

Grasscheck: Monitoring And Predicting Grass Production In Northern Ireland, P. D. Barrett, A. S. Laidlaw

IGC Proceedings (1997-2023)

No abstract provided.


Effect Of Feeding Red Clover, Lucerne And Kale Silage On The Voluntary Intake And Liveweight Gain Of Growing Lambs, R. Fychan, C. L. Marley, M. D. Fraser, R. Jones Feb 2023

Effect Of Feeding Red Clover, Lucerne And Kale Silage On The Voluntary Intake And Liveweight Gain Of Growing Lambs, R. Fychan, C. L. Marley, M. D. Fraser, R. Jones

IGC Proceedings (1997-2023)

Despite a need for alternative forages to provide home-grown sources of protein (Wilkins & Jones, 2000), there have been few studies comparing the effects of such forages on lamb production when fed as silage. In this experiment the effects of offering ensiled red clover (Trifolium pratense), lucerne (Medicago sativa) and kale (Brassica oleracea) on voluntary intake and liveweight gain in growing lambs were compared.


Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 4, Jaymelynn K. Farney, Harley Allen, Larissa Muniz Jan 2023

Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 4, Jaymelynn K. Farney, Harley Allen, Larissa Muniz

Kansas Agricultural Experiment Station Research Reports

This study aims to evaluate effectiveness of two operational management systems for steer gains and fly control. The first strategy evaluated was pasture burn date of March (MAR) or April (APR). The second management strategy was free-choice mineral with spices (SPICE) or without spices (CON). Eight pastures (n = 281 steers; initial weight 566 lb) were used in a 2 × 2 factorial treatment structure. Steers were weighed individually, randomly assigned to treatment, and grazed for 89 days. Weekly, 33% of steers were photographed to count flies and evaluated for hair coat score. Steers that grazed pastures that were burned …


Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 3, Jaymelynn K. Farney, Larissa Muniz, Harley Allen Jan 2023

Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 3, Jaymelynn K. Farney, Larissa Muniz, Harley Allen

Kansas Agricultural Experiment Station Research Reports

Sixty-four growing steers were used in a split-plot experiment, where the whole plot was pasture, and the split-plot was the implant level. Whole plot treatment was a 4 × 2 factorial with four levels of fescue (High Endophyte, Low Endophyte, Novel, or Endophyte Free) and two levels of legume (Legumes or No Legumes). The split-plot included four implant levels (No Implant, Synovex One Grass, Revalor-G, or Ralgro). Data collected were weights and ultrasound carcass characteristics when steers were coming off grass. Steers on High Endophyte had a lower average daily gain (ADG) and final weight than steers on novel endophyte, …


Evaluating The Impacts Of Waterlogging Stress On Cowpea (Vigna Unguiculata L.) Growth Traits And Physiological Performance, Omolayo Joshua Olorunwa Dec 2022

Evaluating The Impacts Of Waterlogging Stress On Cowpea (Vigna Unguiculata L.) Growth Traits And Physiological Performance, Omolayo Joshua Olorunwa

Theses and Dissertations

The progressive increase in the global population and the rapidly changing climate have put unprecedented pressure on crop production. Cowpea is one of the world’s most important leguminous crops, contributing to food security and environmental sustainability. However, cowpea productivity is limited due to waterlogging stress. The main objective of this study was to explore physiological and biochemical mechanisms to understand how cowpea genotypes respond to waterlogging stress. Four studies were conducted in controlled and field conditions to achieve these objectives. Study 1 characterized the waterlogging tolerance of 30 cowpea genotypes in a controlled environment using 24 morphophysiological parameters with waterlogging …


Improving Growth And Yield Of Sunflower With Integrated Use Of Compost And Pgpr (Variovorax Paradoxus) With Different Levels Of N-Chemical Fertilizer, Muhammad Imran, Muhammad Javed Akhtar, Sarmad Frogh Arshad, Muhammad Ashfaq, Muhammad Zeeshan Gulzar, Hafiz Shahzad Ahmad, Kashif Bashir, Zulqurnain Khan, Hasan Riaz, Tanveer Ul Haq Jun 2022

Improving Growth And Yield Of Sunflower With Integrated Use Of Compost And Pgpr (Variovorax Paradoxus) With Different Levels Of N-Chemical Fertilizer, Muhammad Imran, Muhammad Javed Akhtar, Sarmad Frogh Arshad, Muhammad Ashfaq, Muhammad Zeeshan Gulzar, Hafiz Shahzad Ahmad, Kashif Bashir, Zulqurnain Khan, Hasan Riaz, Tanveer Ul Haq

Journal of Bioresource Management

Plant growth-promoting rhizobacteria (PGPRs) stimulate plant growth through their ability, to increasing the root length and growth, by asymbiotic nitrogen fixation, by producing siderophores, solubilization of mineral phosphates and mineralization of other nutrients. Organic waste material of fruits and vegetables was collected and composted in a locally fabricated composting unit. A pot trial was conducted to study the effectiveness of compost and PGPR (Variovorax paradoxus) with recommended rate of PK and with different rates of N fertilizer i.e. 50 %, 75 % and 100 %, on growth and yield of sunflower. Results showed that the integrated use of …


A Micro-Environmental System For Fast Propagation Of Blueberries, Tristan Bonifield Jan 2022

A Micro-Environmental System For Fast Propagation Of Blueberries, Tristan Bonifield

Dissertations, Master's Theses and Master's Reports

The demand for blueberries has continued to rise over the decades as its popularity has spread in North America and the world. Propagation of new plants to supply new farms and individuals is needed to meet that demand. Here we report the invention of a closed system that was tested by examining the growth of the cuttings (plant length, rooting, and root length) after a one-month period in both the proposed system and a traditional mist system. The proposed system showed a few statistically significant advantages over the traditional mist system with no consistent trend, besides a decrease in wilting …


Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 3, J. K. Farney, M. Frahm Jan 2022

Stocker Steer Gains And Fly Numbers As Impacted By Burn Date And Type Of Mineral On Tallgrass Native Range – Year 3, J. K. Farney, M. Frahm

Kansas Agricultural Experiment Station Research Reports

This study aims to evaluate effectiveness of two operational management systems for steer gains and fly control. The first strategy evaluated was pasture burn date of March (MAR) or April (APR). The second management strategy was free-choice mineral with spices (SPICE) or without spices (CON). Eight pastures (n = 281 steers; initial weight 572 ± 75 lb) were used in a 2 × 2 factorial treatment structure. Steers were weighed individually, randomly assigned to treatment, and grazed for 87 days. Weekly, 33% of steers were photographed to count flies and evaluated for hair coat score. Neither the date of pasture …


Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff Jan 2022

Evaluation Of Implants, Clover, And Fescue Variety On Stocker Steers – Year 2, J. K. Farney, M. Frahm, S. Strnad, T. Bottorff

Kansas Agricultural Experiment Station Research Reports

Sixty-four growing steers were used in a split-plot experiment, where the whole plot was pasture, and the split-plot was the implant level. Whole plot treatment was a 4 × 2 factorial with four levels of fescue (High Endophyte, Low Endophyte, Novel, or Endophyte Free) and two levels of legume (Legumes or No Legumes). The split-plot included four implant levels (No Implant, Synovex One Grass, Revalor-G, or Ralgro). Data collected were weights, hair coat scores, hair length, rectal temperature (every 28 days), and ultrasound carcass characteristics when steers were coming off grass. Steers on High Endophyte had the lowest average daily …


Largemouth Bass In The Upper Mississippi River: An Evaluation Of Management Strategies And Understanding Potential Factors Influencing Dynamic Rate Functions, Kylie Beth Sterling Jan 2022

Largemouth Bass In The Upper Mississippi River: An Evaluation Of Management Strategies And Understanding Potential Factors Influencing Dynamic Rate Functions, Kylie Beth Sterling

MSU Graduate Theses

The Upper Mississippi River (UMR) supports ecologically and economically important commercial and recreational fisheries. One recreational fishery in the UMR is the Largemouth Bass fishery. Recreational fisheries can be effectively managed using information on population dynamics, though little is known about Largemouth Bass population dynamics in large river ecosystems. Therefore, the objectives of this study were to 1) evaluate recruitment, growth, and mortality of three Largemouth Bass populations in the UMR, specifically within Pools 4, 8, and 13, and 2) to use those estimates of recruitment, growth and mortality to inform exploitation models to evaluate best management practices for each …


Effects Of Different Levels Of Energy Supplementation On Growth Of Grazing Holstein Heifers, L. P. Novaes, C. E. Polan Nov 2021

Effects Of Different Levels Of Energy Supplementation On Growth Of Grazing Holstein Heifers, L. P. Novaes, C. E. Polan

IGC Proceedings (1997-2023)

Growth of Holstein heifers was studied for 1987 grazing season to evaluate pasture-drylot systems for raising dairy replacements. Orchardgrass (Dactylis glomerata L), tall fescue (Festuca arundinacea Schreb), bluegrass (Poa pratensis L) and white (Trifolium repens L) and red clover (Trifolium pratense, L) were the principal components of the grass-legume mixture in six paddocks of 1.5 ha each. Carrying capacity was estimated at six animals/ha (3.1 animal units) and excess forage was harvested as hay to control forage growth and quality. Grazing days were 140 days. None or 2.0 kg/d …


Annual Dry Matter And Nutrient Yields In A Dichanthium Sward With Or Without Gliricidia Shrubs, P. Cruz Nov 2021

Annual Dry Matter And Nutrient Yields In A Dichanthium Sward With Or Without Gliricidia Shrubs, P. Cruz

IGC Proceedings (1997-2023)

The aim of this work was to compare the annual biomass production and nutrient removal of a Dichanthium aristatum pasture with those of a pasture of the same species associated with a leguminous tree, Gliricidia sepium. Measurements were made over twelve months between April 1993 and April 1994. Sampling was done with the same defoliation frequency as an intensive cut-and-carry system: every 4 and 10 weeks for the grassland and tree layers respectively. There was no significant difference between the yield of the pure grass (21.6 ± 2.0 t ha-1) and that of the grass with trees …


Seasonal Patterns Of Growth And Senescence In Cynodon Spp. Cv Tifton 85 Grazed Swards, L. F. M. Pinto, L. G. Barioni, S. C. Da Silva Sep 2021

Seasonal Patterns Of Growth And Senescence In Cynodon Spp. Cv Tifton 85 Grazed Swards, L. F. M. Pinto, L. G. Barioni, S. C. Da Silva

IGC Proceedings (1997-2023)

Growth and senescence are very important determinants of grassland productivity and correspond to key features to be considered for grazing management purposes. The present study was carried out at ESALQ, Piracicaba, S.P., Brazil and evaluated growth and senescence as a function of sward surface height. Mathematical models generated revealed that a similar pattern of response occurred as described in the literature for temperate grass species. However, a seasonal variation in response curves for growth and senescence was also observed and could be related to climatic events. Highest herbage accumulation rates were observed within the range of 15 to 20 cm …


Effect Of Temperature On Phenology In Triple-Awned Grass (Stipagrostis Plumosa), Hossein Azarnivand, H. Dastmalchi Aug 2021

Effect Of Temperature On Phenology In Triple-Awned Grass (Stipagrostis Plumosa), Hossein Azarnivand, H. Dastmalchi

IGC Proceedings (1997-2023)

Phenology of triple-awned grass in different stages of vegetative growth, flowering and seed falling was investigated. Each phenological stage was related to minimum and maximum air and soil surface temperatures. Soil surface temperature was measured two times per day during different seasons. Climate data were obtained from the nearest weather station. The study was carried out in sand dunes of band-e-rig of Kashan in the central region of Iran. This species is important in terms of wind erosion control and livestock feeding in arid areas. The results showed that air temperatures ranged from –22 oC to 41.5 oC …


Salinity Effects On Plant Growth, Photosynthesis, And Ion Content Of Covered And Naked Oat, Guiqin Zhao, Baoluo Ma Apr 2021

Salinity Effects On Plant Growth, Photosynthesis, And Ion Content Of Covered And Naked Oat, Guiqin Zhao, Baoluo Ma

IGC Proceedings (1997-2023)

No abstract provided.


Effects Of Different Salts And Concentrations On Germination And Growth Of Leymus Chinensis, L. H. Huang, Z. W. Liang, H. Y. Ma, M. Liu, C. Yan, Z. C. Wang Mar 2021

Effects Of Different Salts And Concentrations On Germination And Growth Of Leymus Chinensis, L. H. Huang, Z. W. Liang, H. Y. Ma, M. Liu, C. Yan, Z. C. Wang

IGC Proceedings (1997-2023)

No abstract provided.


Effects Of Cobalt Treatment On Growth Of Five Legume Species, Yu Lu, Qinghua Yuan Feb 2021

Effects Of Cobalt Treatment On Growth Of Five Legume Species, Yu Lu, Qinghua Yuan

IGC Proceedings (1997-2023)

No abstract provided.


European Aspen With High Compared To Low Constitutive Tannin Defenses Grow Taller In Response To Anthropogenic Nitrogen Enrichment, Franziska Bandau, Benedicte Riber Albrectsen, Kathryn M. Robinson, Michael J. Gundale Feb 2021

European Aspen With High Compared To Low Constitutive Tannin Defenses Grow Taller In Response To Anthropogenic Nitrogen Enrichment, Franziska Bandau, Benedicte Riber Albrectsen, Kathryn M. Robinson, Michael J. Gundale

Aspen Bibliography

Boreal forests receive nitrogen-(N)-enrichment via atmospheric deposition and industrial fertilization. While it is known that N-enrichment can intensify interactions with natural antagonists, it remains poorly understood how genetic variability in plant defense chemistry can affect biotic interactions and height growth in N-enriched environments. We grew replicates of five low- and high-tannin Populus tremula genotypes, respectively, under three N-treatments (ambient, 15, and 150 kg N ha−1 yr−1). We assessed shoot blight occurrence (i.e. symptoms caused by Venturia fungi) during four growing seasons, and tree height growth during the same period. Damage by Venturia spp. increased with N-addition during all years, likely …


Salt Tolerance Of Some New Selections Of Warm Season Turfgrasses And Their Salt Tolerance Mechanisms, Jingbo Chen, Tingting Zhang, Jun Yan, Yanqin Jiang, Hailin Guo, Jianxiu Liu Jan 2021

Salt Tolerance Of Some New Selections Of Warm Season Turfgrasses And Their Salt Tolerance Mechanisms, Jingbo Chen, Tingting Zhang, Jun Yan, Yanqin Jiang, Hailin Guo, Jianxiu Liu

IGC Proceedings (1997-2023)

No abstract provided.


Heavy Metal Pb Stress On Germination And Growth Of 5 Clover Varieties, Zhenzhong Sun, Qiao Wei, Jun Yin Dec 2020

Heavy Metal Pb Stress On Germination And Growth Of 5 Clover Varieties, Zhenzhong Sun, Qiao Wei, Jun Yin

IGC Proceedings (1997-2023)

No abstract provided.


Na Compound Fertilizer Promotes Growth And Enhances Drought Resistance Of Desert Plants, Xiangrui Zhou, Lijun Yue, Chunmei Wang, Suomin Wang Aug 2020

Na Compound Fertilizer Promotes Growth And Enhances Drought Resistance Of Desert Plants, Xiangrui Zhou, Lijun Yue, Chunmei Wang, Suomin Wang

IGC Proceedings (1997-2023)

No abstract provided.