Agronomy and Crop Sciences Commons^™

Uav Remote Sensing For Assessment Of Conservative Management Practices In Maize-Soybean Cropping System, Aakriti Poudel

LSU Master's Theses

Sustainable agriculture practices promote cover cropping, which enhances nutrient management and impacts subsequent crop productivity in field crop rotations. Precision agriculture technology, particularly Unmanned Aerial Vehicle (UAV) remote sensing, enables a detailed evaluation of crop management. The studies were conducted in a maize-soybean rotation system with winter cover cropping and fallow management. The maize experiment investigated the effect of nitrogen application rates and cover cropping, using UAV-derived Normalized Difference Red-Edge (NDRE) to monitor crop performance. NDRE effectively captured the N response and the effect of cover cropping across growth stages, particularly during mid-season (55-81 DAP), where it showed a strong …

Integrating Cereal Rye Cover Crop And Herbicide Programs To Manage Glyphosate-Resistant Italian Ryegrass In The Midsouth, Bhupesh K. Dhaka

LSU Master's Theses

Glyphosate-resistant (GR) Italian ryegrass (Lolium perenne ssp. multiflorum) has become an economically significant weed management challenge in Louisiana row crop production systems. The problem is further exacerbated by the occurrence of biotypes with resistance to acetyl-CoA carboxylase (ACCase) and acetolactate synthase (ALS) inhibitors—herbicide sites of action (SOAs) commonly used for ryegrass control in soybean (Glycine max) and cotton (Gossypium). Field, greenhouse, and laboratory experiments were conducted during the 2023–2024 and 2024–2025 growing seasons at the LSU AgCenter Northeast Research Station in St. Joseph, LA, and at the LSU AgCenter Weed Science facilities in Baton …

Identifying Superior Finger Millet (Eleusine Coracana L.) Landraces Using The Multi-Trait Genotype-Ideotype Distance Index (Mgidi), Sujan Chapagaina, Bishnu Prasad Kandela, Sudikshya Shresthaa, Ankur Poudela, Shubh Pravat Singh Yadavb

Extension Publications

Genetic variability and selection are crucial for finger millet breeding programs to maximize genetic gain and productivity. This study evaluated 18 finger millet landraces cultivated in the mid-hills of Nepal, along with ‘Kavre Kodo 2’ as a check variety, assessing 14 agro-morphological traits. The objective was to identify superior finger millet landraces using a multivariate approach based on the multi-trait genotype– ideotype distance index (MGIDI). The experiment was conducted in a randomized complete block design (RCBD) with three replications. Principal component analysis revealed that the first five components collectively accounted for 80.8% of the total variation, reflecting the genetic relatedness …

2026 Western Australian Crop Sowing Guide, Brenda Shackley, Stacey Power, Blakely Paynter, Harmohinder Dhammu, Bronte Wackett, Dion Nicol, Mark Seymour, Greg Shea

Bulletins 4000 -

The 2026 Western Australian Crop Sowing Guide has been compiled by officers in the Department of Primary Industries and Regional Development. It provides information to support variety decisions for each of the major crops for the upcoming season.

Recycling Waste Via Insect Agriculture: Frass Impacts On Soil And Plant Health, Helen C.S. Amorim, Amanda J. Ashworth, Thomas F. Ducey, Valerie B. Brewer-Gunsaulis, Gerson L. Drescher, Philip R. Owens, Alana H. Patterson, Giovanna De Blais, Iris Van Straaten

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Frass-the main by-product of insect rearing for animal feed-is emerging as a promising soil amendment and plant growth promoter. However, basic agronomic information is lacking and prevents frass' widespread use as a biofertilizer. This study assessed impacts of black soldier fly (Hermetia illucens L. [Diptera: Stratiomyidae]) frass on soil fertility, crop growth, and quality compared to poultry litter (PL). Irrigated and non-irrigated soybean (Glycine max L. Merr.) and non-irrigated switchgrass (Panicum virgatum L.) plots received either PL (5.6 Mg ha(-1)), low frass rate (LF; 5.6 Mg ha(-1)), high frass rate (HF; 11.2 Mg ha(-1)), besides the unamended control (CT). In …

Effective Control Of Tomato Leaf Miner, Tuta Absoluta (Meyrick) (Lepidoptera: Gelechiidae) Using The Entomopathogenic Fungus, Beauveria Pseudobassiana Rehner & Humber In Commercial High-Arched Plastic Tunnels, Aya Fardoun, Nour Ezzeddine, Hagop S. Atamian, Hana Sobh, Houssam Shaib, Yusuf Abou Jawdah

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Background

The tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a highly invasive pest that causes significant damages to tomato crops globally. Its resistance to commonly used chemical insecticides has made management increasingly difficult, prompting the need for sustainable, effective alternatives. This study investigated the efficacy of a Lebanese isolate of Beauveria pseudobassiana as a biological control agent against T. absoluta, compared its performance to Bacillus thuringiensis and conventional pesticide mixtures under both controlled, commercial production conditions

Results

Three preliminary cage experiments were conducted under controlled infestation conditions using larvae reared from field-collected adults. Conidial suspensions of B. pseudobassiana …

Use Of Growing Degree Days To Model The Dynamics Of Aboveground Biomass And Nitrogen Accumulation Of Winter Cover Crops, M. Pessotto, Trenton Roberts, C. Dos Santos, K. A. Hoegenauer, M. Bertucci, W. J. Ross, M. Savin

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Cover cropping is an important management practice that can benefit the cash crop and the environment. Plant species, weather, and cover crop termination influence biomass production and N fixation potential. This study was conducted to determine optimal termination dates for production systems in Arkansas based on growing degree days (GDD) for eight different cover crop species: Austrian winter pea (AWP) (Pisum sativum), balansa clover (Trifolium michelianum), barley (Hordeum vulgare), black-seeded oats (Avena sativa), common vetch (Vicia sativa var. Cahaba), cereal rye (Secale cereale), crimson clover (Trifolium incarnatum), and hairy vetch (Vicia villosa). Field studies were conducted at three research stations …

Understanding Rice Production Stagnation In The Philippines: Regional Evidence And Development Implications, Henry Bartelet, Alenn Jhulia D. Prodigalidad, Janelle S. Dy, Jan Gabriel N. Manzano

Quantitative Methods and Information Technology Faculty Publications

Despite decades of investment in agricultural research and rice development, the Philippines continues to face stagnation in domestic rice production. This persistent trend, occurring despite a sizable arable land base and large rural workforce, has contributed to the country’s growing reliance on rice imports to meet national food needs. In response, the government has implemented a tariff-based import system designed to fund domestic productivity improvements. While previous studies have explored the technical and environmental constraints affecting rice production, such as irrigation shortfalls, land degradation, and climate variability, few have examined recent national trends using regionally disaggregated data alongside qualitative insights. …

Genetic Engineering For Pastures, W J. Peacock

IGC Proceedings (1977-2023)

The first genetically engineered food products from horticultural production systems are now entering the mnrke< and field trials of genetically engineered crop species are well advanced. We cnn expect that a range of crop cultivars, in which gene

Grassland For Sustainable Ecosystems, Malcolm Hadley

IGC Proceedings (1977-2023)

Grasslnnds present many advantages for examining issues related to sustainability. Grasslands include planted pastures as well as a variety of natural rangelands in situations ranging from semi-arid to subhumid. Diversity is also reflected in the spectrum of grassland users and uses, for example, nomadic pastoralism, extensive ranches, intensive pastures, wildlife tourism, game hunting. And in terms of sustainability of resource management, grasslands encompass a wide range of contrasting situations and conflicts in resource use. Heavy grazing pressure associated with increasing human populations in certain tropical savannas, the implications of rural depopulation to traditional pasture management in alpine regions, and the …

Grasslands For Our World, F Riveros

IGC Proceedings (1977-2023)

The present-day role of grasslands and fodder is reviewed with respect agriculture, animal production and environmental concerns. The world's grazing lands are a finite resource and, overall, arc being badly managed; in most developing countries action is required now, before it is too late. They will continue to be a major source of animal feed for the foreseeable future; encroachment from cropping will continue locally but, for much of what is now natural pasture, exploitation by the grazing animal .will remain the major means of obtaining an economic return; the task of grassland professionals is to assist the managers of …

Human Impact On Terrestrial Ecosystems - What We Know And What We Are Doing About It, H A. Mooney

IGC Proceedings (1977-2023)

At present the impact of humankind on the Earth System is substantial and will become greater as we continue to add over 80 million people to the global population each year. Collectively the human species utilises over a third of the total fresh water that is available, as well as an equivalent amount of the total terrestrial productivity. Possil energy is being consumed at a prodigious rate and fuels, among other things, over a half a billion vehicles. To support the large human population the Earth has been greatly reconfigured with much of the land utilised for grazing and agriculture. …

Science And Information For Our Grasslands, G A. Nores, R R. Vera

IGC Proceedings (1977-2023)

This paper favours a view of grasslands, and agricultural research in general, that extends well beyond the limits of the scientific community and promotes the active involvement of scientists in current societal debates from a scientific perspective. It is argued that in developed countries environmental concerns rather than production growth will tend to dominate future social debate. In developing countries there is a need to balance agricultural growth with responsible management of natural resources. Needs for new technology go beyond improving biophysical efficiency, and involve economic and social efficiency objectives. The relevance of grassland research is assessed in terms of …

Vegetation Dynamics In Grazed Systems: A Hierarchical Perspective, D D. Briske

IGC Proceedings (1977-2023)

Grassland vegetation consists of a series of hierarchical levels including the tiller, plant, population and community which collectively influence the productivity and stability of grazed systems. These hierarchical levels may respond uniformly to influence vegetation dynamics, but frequently additional complexity is encountered by the occurrence of opposing responses between or among hierarchical levels. Consequently, it is important to con­sider responses at several hierarchical levels to achieve an accurate interpretation of vegetation dynamics to graz­ing within the community. The significance of a hierarchical perspective to vegetation management is illustrated with examples from bunchgrass dominated rangelands at the level of the individual …

Forage Conservation And Physico-Chemical Conversion, E Zimmer

IGC Proceedings (1977-2023)

The factors on which the digestibility of organic matter (dMO) of forages depend are now well-known. In temperate forages, this digestibility depends mainly on the growth stage, the rank of the growth-cycle, and the botanical species. It is constantly decreasing with advancing age, especially during the first growth-cycle. In after­math growth-cycles, high temperatures accelerate the decrease of digestibility with age. Tropical forages follow the same laws, but tropical grasses are less digestible than cool-season grasses, especially at young stages and in warm weather. This is partly due to the fact that high temperatures increase cell-wall contents and lignification, and also …

The Feeding Value Of Forages, C Demarquilly

IGC Proceedings (1977-2023)

The lower productivity of legume based swards and their instability of yield from year to year compared with nitrogen fertilised grass swards continues to be a major constraint on the integration of leguminous nitrogen fixing species into present-day farming systems. Most legume systems have a high biological nitrogen fixation (BNF) potential which is rarely attained in the· field due to limiting environmental or management factors. Enhancement of BNF through manipulation of the Rhizobium and plant components of the symbiosis must be viewed as a long-term objective. Optimisation of nitrogen fixation in the short-term may best be achieved through optimisation of …

Nitrogen Fixation, Cycling, And Utilization, P M. Murphy, M T. Sherwood

IGC Proceedings (1977-2023)

The lower productivity of legume based swards and their instability of yield from year to year compared with nitrogen fertilised grass swards continues to be a major constraint on the integration of leguminous nitrogen fixing species into present-day farming systems. Most legume systems have a high biological nitrogen fixation (BNF) potential which is rarely attained in the· field due to limiting environmental or management factors. Enhancement of BNF through manipulation of the Rhizobium and plant components of the symbiosis must be viewed as a long-term objective. Optimisation of nitrogen fixation in the short-term may best be achieved through optimisation of …

La Prairie Dans Ses Usages Multiples: Conservation Des Sols, Protection De L'Environnement, Etc., M Skouri, J Poissonet

IGC Proceedings (1977-2023)

Les terres :i paturage couvrent une partie importante de la planete et presentent une extreme diversite de situations en fonction des conditions ecologiques et des facteurs socio-economiques et culturels qui s'exercent sur ces espaces. Ces facteurs ont engendre des transformations du milieu nature] permettant d'intensifier, et :i ]'extreme, de contr61er la production vegetale de ces ecosystemes. Si le role premier de ces formations herbacees a ete d'alimenter Jes herbivores afin que l'homme en obtienne une production (viande, lait, peaux, etc.), Jes autres fonctions de ces espaces ont une importance que !'on ne peut se permettre de negliger, que ce soit …

Quickening Snow Melting In Early Spring With Black Powder In Snowy District, A Imai

IGC Proceedings (1977-2023)

Experiments were conducted during 1977-1980 to quiken snow melting in early spring with three kinds of black powders at 450 m a.s.l.,Tsunan-machi, Niigata Prefecture. Snow melting materials involved blast furnace slag, di-amido lime and calcium silicate and their effects on snow melting were compared with each other at various application rates on snow surface in late March every year. Snow melting was earlier with 600 kg/ha di-amido lime resulting from lower albedo of 25 % and it could quicken the snow-off by 10-13 days as compared to the control plot. This early snow melting induced the higher soil temperature and …

Effect Of Fertilization In Autumn Or After Wintering On Dallisgrass Production In The Following Season, T Kobayashi

IGC Proceedings (1977-2023)

To improve dallisgrass (Paspalum dilatatum Poir.) pasture productivity, the effects of autumn or spring topdressing in a field experiment and autumn nitrogen (N) application levels in a pot experiment on the regrowth and carbohydrate accumulation until winter and on the early summer production were studied. Dallisgrass pasture was topdressed in either autumn (late September) or spring (early March) at 0.5 kg/a each of N, phosphate (P2O5), and potash (K20), after the final cutting in late September 1978. Plants in pots were topdressed at the rates of 0.5, 1, 2, and 4 kg N/a, just after cutting in early October …

Selenium Pellets Administration In Cows Grazing Continuously On Low Selenium Grassland In Japan, J Jachja, N Ishida, R Kawashima, K Otsuki, K Otsuki, M Kawano, F Hosoyamada

IGC Proceedings (1977-2023)

The effectof selenium (Se) supplementation in cows upon the growth of their newborn calves under the conditions of continuous grazing in a low Se pasture were studied. The selenium status of calves which were born from selenium treated cows were higher than that in calves from untreated control cows during the suckling period. Selenium supplementation to the dams showed no significant response upon the body measurement for their calves at birth or four months of age, but significant improvement in body weight and withers height at the weaning period. When cows grazed continuously in pastures containing a selenium content of …

Plant Introduction, Seed Production And Fodder Promotion In An Integrated Livestock And Pasture Development Programme In Kerala, India, A Shamsudeen, T V. Joseph, F Von Sury

IGC Proceedings (1977-2023)

An integrated pasture development programme for the state of Kerala, in the 1500-3500 mm rainfall area of southern India, is described. Kerala's agriculture is characterized by small holdings and intensive multicrop farming systems with coconut and rice as main crops. Dairy cattle rearing is an important subsidiary for many farmers. A plant introduction programme selected Panicum maximum ( cvs. Makueni and Riversdale), Brachiaria ruziziensis and Centrosema pubescens for intercropping in coconut gardens. Desmodium intortum and D. uncinatum were introduced for the grasslands of the high ranges. B. ruziziensis, Melinis minutiflora, Setaria anceps ( cvs. Kazungula and N arok), Stylosanthes guianensis …

Development Of Legume-Based Pastures For Livestock Production In Yunnan, Peoples Republic Of China- Preliminary Studies With Trifolium Semiplosum Cv. Safari And Temperate Legume Cultivars, M J. Mathison, M/S T. Wang, Z Y. Yang, M H. Dunning, Y N. Al, Z Z. Ma, H X. Al, L W. Peng, H Yang, D C. Zhang, C G. Zhang, G R. Yang

IGC Proceedings (1977-2023)

Aiming to improve livestock production from extensive grassland areas in Yunnan Province south west China, forage cultivar evaluation experiments are in progress as part of the China-Australia Technical Co-operation Programme. Preliminary results are given from introduced temperate legumes sown in 1983 in replicated swards in cultivated and uncultivated grassland. South west monsoon climates sampled range from alpine-temperate to tropical. In alpine sites red clover and annual species e.g. vetches, persian and subterranean clovers were among top dry matter yielders in the first year on cultivated land, Annual clovers failed or were outyielded by white, red clovers and, in one locality, …

Development Of Legume- Based Pastures For Livestock Production In Yannan, Peoples Republic Of China - Preliminary Studies With Tropical Legume Cultivars, M J. Mathison, M.S T. Wang, Z Y. Yang, Y N. Ai, Z Z. Ma, H X. Al, L W. Peng, G R. Yang

IGC Proceedings (1977-2023)

As part of the Australia -China technical cooperation programme investigations to raise livestock production with improved pastures began in 1983 in Yunnan province, south west China. Preliminary results with ungrazedintroduced tropical legume cultivars sown in cultivated and uncultivated grassland are given for 2000-2500m altitude subtropical sites and a 500m alt. tropical site. Only Jotononis, silverleaf and greenleaf desmodiums were productive in the second year at subtropical sites. At the tropical site annual lab lab produced most dry matter in the first year. Most perennial species grew well there in the second year. The best cul ti vars for cultivated land …

Fodder Development In The Dry Zone Of Sri Lanka - A Pasture Scheme For Small Farms, P Berger, L R. Abeykoon, L Winkler

IGC Proceedings (1977-2023)

A pasture development scheme to improve fodder production by small farmers was introduces by the Sri Lanka - Swiss Livestock Development Project (SSLDP) in the easten dry zone of Sri Lanka. The procedure of the scheme is described. Emphasis was put on proper land selection, establishment procedures and management factors of pasture plots. To promote the scheme a subsidy is given to the farmers after inspections by the extension staff. The first experiences showed a better survival of the plots under a closer follow up. A marked decrease was observed during extreme climatical periods. It is proposed to intensify the …

Range Improvement In Tropical China: Gaopoling Model Cattle Farm, D L. Michalk, J F. Ayres, Fu Nanping, Zhu Chin-Min

IGC Proceedings (1977-2023)

New policies seek to increase beef output on China's rangeland by sowing legume-based pastures. "Model farms" provide a means of quickly transferring this technology to China. Gaopoling Model Cattle Farm was set up to improve beef production in dry tropical Hainan Island by introducing new legume species and better husbandry practices. With finance from Guangdong Province and technology from Australia, a program emphasising pasture research, performance recording of "improved" versus "traditional" cattle husbandry and commercial farm developmant was commenced in 1981. Though experimentation, recommendations for species combinations, fertilizer inputs and sowing methods were formulated for the major local soil types. …

Preliminary Fertilizer Requirements For Establishing Legume Based Pastures In The Alpine Zoone Of Yunnan, Jinjing Wang, J R. Bruce-Smith, Jixin Li, Mingliang Wang

IGC Proceedings (1977-2023)

Preliminary results of field trials designed to assess the soil fertility status for establishing improved legume based pastures in the alpine zone of Yunnan Province are presented. These trials were undertaken by a joint Chinese-Australian Project which is investigating ways to improve the livestock industry of the Province. The best treatments at one site in the North East yielded about 9000kg of total (grass + legume + weeds) pasture and 7000kg of this was attributable to clover production. At another site in the North West on the Southern Tibetan Plateau summer waterlogging confined the pasture yield to 4000kg DM. Tentative …

Preliminary Studies Of Fertilizer Requirements Of Tropical Legumes In Southern Yunnans Red River Valley, Jinjing Wang, J R. Bruce-Smith, Mingliang Wang, Jixin Li

IGC Proceedings (1977-2023)

As part of a joint Chinese-Australian Project to promote livestock development, a farm site in the lower Chinese section of Red River Valley was chosen as an area to study techniques suited to meeting these objectives through establishing and utilizing legume based tropical pastures. Preliminary results of fertilizer trials at Daliuhu Farm show that sulphur deficiency is the main nutrient problem retarding the growth of siratro and stylo legumes. The application of as little as 5, but optimally between 10 and 20kg of sulphur as gypsum Sor elemental S seems to adequately meet their growth requirements. The apparent adequate phosphate …

Studies On The Mountain Pastures Classification And Class Evaluation Of Guichou, China, Huang Weilian

IGC Proceedings (1977-2023)

The pastures of the mountain range in Guichou are a secondary succession type, which has been shaped since the forest was destroyed. They were formed by forest regressive succession; from forest to bushwood, and with further degeneration from bushes to pastures. Therefore, in the author's opinion, it is appropriate to use the secondary succession series method of geobotany to classify the mountain range pastures in southern China. This method can objectively describe the origin and developing stages of this range type, the features of the vegetation succession series in subtropical areas, and express their economic value and utilization, which form …

The Grass Hillsides Of Jiangxi Province, Fan Xie, Suehen Wang

IGC Proceedings (1977-2023)

For researching into vegetation on grass slopes, their types, characteristics, yield and prospect of application in livestock husbandry, a sampling investigation on the semi-location spot has been carried out. Jiangxi province is situated in Southeast China, belonging to the monsoon region in Southeast Asia. According to the principles of ecological condition and dominant species, the grass hillsides can be classified into 7 herbosa groups: Ischaemum ciliare grass-land on hilly land, Arundinella setosa grass-land on hilly land, Dicranopteris dichotoma grass-land on hilly land of low hills, Miscanthus sinensis grass-land on hilly land of mid-low hills, M. floridulus grass-land on hilly land …