Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"harvest timing"”.
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Yield response to nitrogen fertilization and harvest timing on a mature Miscanthus x giganteus stand
… the effects of nitrogen fertilization rates and harvest timings on yields and quality of a four-year-old crop of M. x giganteus. Research plots in Champaign, IL were harvested at five dates from August through March 2009, 2010, and 2011, and received five rates of nitrogen fertilizer (from 0 to …
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Nitrogen, phosphorus and potassium removal from perennial energy grasses when grown on wet marginal land
… with the goal of understanding the effects of harvest timing (peak standing crop, H1, and after a killing frost, H2), species (switchgrass, Miscanthus x giganteus, prairie cordgrass, and a native grass mixture), and N-rate (0, 56, and 112 kg N ha-1), on nutrient removal in grass biomass grown …
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Sustainable harvesting of wild rooibos (Aspalathus linearis) in the Suid Bokkeveld, Northen [i.e. Northern] Cape
A study was conducted on the effect of harvest seasonality and harvest timing on post-harvest regrowth for wild A. linearis plants. Field data support the conventional practice of summer harvests that depend on a host of ecological and social factors. A January harvest (Summer) resulted in the …
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Three essays on forestry economics and management
… of multiple disturbances and flexible harvest timing. A Faustmann-type rotation model is developed and used to guide simulations of loblolly pine management in the southern United States. We show that failure to consider the possibility of multiple disturbances and the …
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IoT and machine learning approach for the determination of optimal freshwater exchange rate in aquaponics
… to assess plant growth stages and predict harvest timing, demonstrating how optimised water management and environmental monitoring can directly influence plant productivity in aquaponics systems. While standard coupled aquaponics management relies on manual monitoring and empirical …
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Industrial hemp agronomic management for grain, fiber, and forage
… of tillage on seed and fiber production, optimal harvest time for seed yield and quality, the response of seed yield to nitrogen fertility rates, and the potential of hemp as a forage crop. A three-year study was conducted in Blacksburg and Orange of Virginia State to assess the effects of tillage …
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Economics of Sustainable Resource Use
… SDG 14 in Europe, the analysis of size-selective harvesting under within-stock heterogeneity, and the assessment of quota management strategies for Baltic cod. The objective is to link ecological mechanisms with economic incentives to support efficient long-run resource use. Microbiodiversity …
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Perennial energy crops on riparian buffers affect nitrogen cycling microbial communities
… Miscanthus x giganteus, and a grass mixture), harvest timing (at anthesis and after a killing frost), and N application rate (0, 56, and 112 kg N ha-1) on soil functional microbial communities involved in the N cycle on a wet marginal riparian buffer. We investigated the abundances of genes …
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Predictive Modeling of Sugarbeet Quality Using Vegetative Index, Statistical, and Artificial Neural Network Methods
… production data prior to the start of the main harvest campaign for harvest timing considerations.</p>
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Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.)
… of N and P by cattail was lower with a single harvest than two harvests per year. The study also examined the effects of harvest timing (August, November, and April) on nutrient removal in the harvested cattail biomass. Compared to August, harvesting cattails in the wetland in November or April …
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Evaluation of switchgrass, M. x giganteus, and sorghum as biomass crops: effects of environment and field management practices
… precipitation, growing season, ecotype, and harvest timing. Chapter 3 remarks that studies reporting M. x giganteus dry biomass yields to date in the USA are few in number and little information is available to suggest a suitable growing region. This study investigates M. x giganteus in four …
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Assessment of perennial bioenergy buffers within a row crop production system
… focuses on the impact of nitrogen fertility and harvest management on feedstock productivity of several perennial warm-season grass species and cultivars (switchgrass, Miscanthus x giganteus, and perennial grass mixtures) on a wet marginal land. The study found Miscanthus x giganteus produced the …
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Effects of Maturity at Harvest of Triticale and Dietary Forage Inclusion on Production Performance, Nutrient Utilization, and Milk Fatty Acid Profile of Lactating Dairy Cows
… study was to evaluate the impact of maturity at harvest and dietary inclusion rate of triticale silage on the production performance and nutrient utilization of lactating dairy cows. The hypothesis was that the production performance of lactating dairy cows would increase when consuming triticale …
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Yield and quality of cool-season perennial grasses for forage and biomass feedstocks in Northeast Colorado
… typical to Eastern Colorado. Two spring harvest dates were selected based on important production phases of the plant. The June 1, 2009 harvest (H1) corresponded to the boot to early heading stage. The average for the species statistically grouped the highest yield was 4500 kg/ha. The …