A5066152840- Soil Carbon and Nitrogen Dynamics
- Agronomic Practices and Intercropping Systems
- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Soil and Water Nutrient Dynamics
- Phosphorus and nutrient management
- Agroforestry and silvopastoral systems
- Ruminant Nutrition and Digestive Physiology
- Organic Food and Agriculture
- Weed Control and Herbicide Applications
- Coal and Its By-products
- Crop Yield and Soil Fertility
- Turfgrass Adaptation and Management
- Agriculture and Rural Development Research
- Soil Management and Crop Yield
- Clay minerals and soil interactions
- Growth and nutrition in plants
- Agriculture Sustainability and Environmental Impact
- Heavy metals in environment
- Mollusks and Parasites Studies
- Bioenergy crop production and management
- Soil and Land Suitability Analysis
- Invertebrate Taxonomy and Ecology
- Seedling growth and survival studies
- Animal Nutrition and Physiology
Dalhousie University
2014-2025
University of California, Davis
2024
Agriculture and Agri-Food Canada
2006-2020
Trent University
2016
Kentville Research and Development Centre
2016
Nova Scotia Department of Agriculture
2006-2012
University of Alberta
1998-2003
Abstract Managing the impact of land use change (LUC) in soil organic carbon (SOC) and health is imperative while climate (CC) food security are concern. Land management practices major uses play a vital role maintaining SOC concentrations health. Haskap one fastest growing berry orchards Canada, covering around 0.1 Mha. Therefore, present study has been conducted two different haskap established after replacing forest grassland, respectively. The shallow (S) furrow (F) tilling as tillage...
The increasing cost of synthetic fertilizers, combined with their associated environmental impacts and yield instability, has promoted the use local waste products cover crops in vineyards. We assessed effects crop mixtures organic industrial wastes on grape quality over two full growing seasons a vineyard (<i>Vitis vinifera</i>) Eastern Canada. experimental treatments were arranged nested design three replicates. Four mixtures: (i) oats + pea hairy vetch (OPV), (ii) mixed red clover (ORCl),...
Abstract This special issue presents the outcomes from “ Designing sustainable and circular agricultural systems for year 2100 ,” joint scientific workshop of ISOFAR, Thünen-Institute, INRA-Morocco, which was held November 14 to 16, 2019 in Marrakesh, Morocco. Nineteen scientists a broad array background nationalities came together with understanding that food security globally is at risk, especially post-2050 timeframe. Current concepts, strategies, measures, efforts carried out by...
Rehabilitation of disturbed native prairie is a challenge facing many in the petroleum industry, with implications for ecology and productivity. The purpose this research was to examine relative influence four rehabilitation strategies on biogeochemical processes (i.e., nitrogen availability, plant uptake nitrogen, biomass production, carbon allocation, soil biological activity). Seven wellsites were selected Chernozemic Solonetzic soils southeastern Alberta. Undisturbed compared seeding...
Organic sources of nutrients are increasingly being used in horticultural and certified organic production. The nutrient-supplying potentials poultry manure compost (PM), feather meal (FM), alfalfa (AA) vermicastings (VC) an unamended control were measured a growth room experiment. amendments applied at rates equivalent to 200, 400 800 kg total N ha -1 soil low fertility. Nitrogen supply concentrations over 6 mo unvegetated pots using PRS™ probes KCl extraction, respectively. Biomass lettuce...
Field experiments were established at two locations in Manitoba 2002 and 2003 to determine N contribution, moisture conservation, weed suppression by alfalfa mulch applied spring wheat (Triticum aestivum L). Mulch treatments included rate (amount harvested from an area 0.5×, 1× 2× the plot area), application timing (at emergence or three-leaf stage). Positive relationships observed between uptake, grain yield, protein concentration. At Winnipeg, rates (3.9 5.2 t ha -1 ) produced yields...
Fertility management is challenging for organic crops with intensive nutrient demands such as potatoes (Solanum tuberosum L.). Four crop sequences varying in pre-potato green manures main plots and four fertility treatments applied the potato phase only [control, inorganic fertilizer (FERT), municipal solid food waste compost (MSW) paper mill biosolid (PMB)] subplots were compared five-year rotations Eastern Canada. Potato yields did not differ significantly between rotations; however, soil...
Abstract Fly ash has shown potential as a soil amendment and source of trace elements beneficial to plants. However, agricultural utilization fly been restricted due variability in chemical composition, elemental toxicity, induced nutrient imbalances plants, inconsistent response vegetation amendment. was applied reclaimed mine near Edmonton, Alberta, at rates 0, 25, 50, 100, 200, 400 t ha−1. Total water soluble concentrations selected were determined from samples collected 0 15 cm. Growth,...
Seeding rates in organic systems should balance a crop’s competitive ability while maintaining grain yield and quality. A 2-yr study assessed the response of spring wheat (Triticum aestivum L.) to variable seeding (1 × conventionally recommended rate, 1.25 ×, 1.5 2 ) plot experiment Nova Scotia on farms across Canada. The was two-factor factorial assessing rate fertility. For Canada-wide experiment, four were completely randomized each farm. Wheat highest at 2003, but average crop emergence...
Halde, C., Hammermeister, A. M., McLean, N. L., Webb, K. T. and Martin, R. C. 2011. Soil compaction under varying rest periods levels of mechanical disturbance in a rotational grazing system. Can. J. Sci. 91: 957–964. In Atlantic Canada, data are limited regarding the effect systems on soil compaction. The objective study was to determine intensive extensive pasture management treatments bulk density, penetration resistance, forage productivity litter accumulation. conducted fine sandy loam...
Adequate supply of plant nutrients is crucial for haskap growth and increased productivity. A study was carried out to determine the variability in (Lonicera caerulea L. cv. Indigo Gem) characteristics relation soil leaf tissue nutrient status. total 19 composite samples corresponding were collected 2016 from 12 locations Nova Scotia. Plant parameters measured include rate, size, chlorophyll content, visual observations. boundary-line approach used sufficiency ranges tissues 2.23%–2.96% N,...
Abstract Ground beetles common in temperate agroecosystems are predators of crop pests, including slugs (Gastropoda: Pulmonata). Salad green production greenhouses during autumn and spring can be limited by damage due to other pests. Introducing ground may help reduce improve yields. In the laboratory, while arenas with only produced nearly no harvestable leaves, presence Carabus nemoralis Müller (Coleoptera: Carabidae) increased number weight leaves 55% amount control (without or beetles),...
A single or a few variables may not be sufficient to evaluate management practice effects in complicated cropping system, so six plant and 13 soil were integrated using principal component analysis (PCA) examine nine 4-yr organic potato rotations. The rotations combinations of three forage levels (0, 1, 2 yr forages) with amendments (monogastric compost, ruminant alfalfa meal). Quantities estimated by test recommendations amendment nutrient availabilities. In the 4 th year, one half each...
Organic farming systems often involve livestock and/or forages. However, managing soil nitrogen (N) availability by adjusting amendment rates and forage duration in crop rotations is a challenge. A 4-year experiment was conducted to evaluate N the fourth year of organic potato with contrasting components. The included three levels (0, 1, or 2 years forage) through starting wheat (Triticum aestivum L.) ending (Solanum tuberosum L.). Within each level, amendments (alfalfa meal, composted beef...
Liu, K., Hammermeister, A. M., Warman, P. R., Drury, C. F. and Martin, R. 2011. Assessing soil nitrogen availability in contrasting cropping systems at the end of transition to organic production. Can. J. Soil Sci. 91: 493–501. Quantifying (N) a period for converting conventional fields could enhance N management during subsequent crop production phase. total (N tot ), KCl extractable (KCl N) potentially mineralizable o ) were determined 3-yr period. A complementary greenhouse ryegrass...
A study on Prince Edward Island was initiated to assess the impact of organic fertility amendment rate and timing treatments growth, yield, berry size soluble solids black currants (Ribes nigrum ‘Titania’). Bushes were planted in spring 2009 at two sites with plastic mulch as a weed control without irrigation, fertilized seven either spring, summer or split between summer. Rates 50, 100 and/or 150 kg estimated available N from blend crab meal poultry manure (Nutriwave®). Yield measured 2010...
Heat waves (HWs) pose a significant threat to California agriculture, with potential adverse effects on crop photosynthetic capacity, quality and yield, all of which contribute economic loss. Lack heat-resilient cultivars puts perennial production under severe due increasing HW frequency, duration intensity. Currently, available walnut are highly sensitive abiotic stress, germplasm collections provide solutions via genotypes native varied climates. We screened nine English accessions...
There is an increasing interest for use of cover crops in orchards; however, the species that are most likely to be successfully implemented and their impact on yield soil productivity have not been fully explored under Maritimes climate. This study investigated effect various treatments organic apple ( Malus domestica Borkh cv. Honeycrisp) leaf nutrient concentrations Nova Scotia over 3 years. Various crop mixtures including legumes, cereals, grasses were planted using a modified Swiss...