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.
Results
Showing 1 to 20 of 155 for “"Growth stage"”.
-
Conyza bonariensis glyphosate tolerance as affected by origin temperature and growth stage
… The aim of the present study is to determine if growth stage has an influence on glyphosate tolerance in C. bonariensis, if highly glyphosate-tolerant C. bonariensis plants become sensitive at low temperatures, and to assess if there is an effect between high manganese levels and response to …
-
The Influence of Growth Stage on Carcass Composition and Factors Associated with Marbling Development in Beef Cattle
… associated with marbling development change with growth stage throughout the feeding period and whether they are correlated to marbling relative to carcass composition. Twenty four (n=24) steers of known origin with the CT leptin genotype were allotted to three harvest groups. Six steers (n=6) per …
-
Evaluation of Methods for Early Growth Stage Identification of Corn Genotypes With Stalk Lodging and Rot Resistance
Several quantitative methods for evaluation of corn (Zea mays L.) stalk quality made at or near anthesis were examined during three years to determine if any were effective in predicting susceptibility to stalk lodging. Stalk measurements were made on eight single-cross hybrids at Urbana, IL while …
-
Ensiling characteristics, digestibility and palatability of tropical grasses as affected by growth stage, chopping length and additives
… conducted in Sri Lanka to study the effects of growth stage, chopping length and additives on ensiling characteristics of Guinea-'A' (Panicum maximum - Ecotype-'A') and NB-21 (Pennisetum purpureum Schumac x Pennisetum americanum). The forages were harvested 1, 2 and 3 wk after growth, chopped …
-
The influence of environment, season, plant growth stage and herbicide formulation the activity of glyphosate applied to Lolium perenne
… and the influence of environment, season, plant growth stage and herbicide formulation has been studied. A preliminary investigation was conducted in controlled environment conditions to establish the phytotoxicity, uptake, translocation and metabolism of glyphosate applied to L.perenne. Full …
-
Quantitative Trait Loci (QTL) for Salt Tolerance in Soybean and Physiological Response to Salt Stress During Early Growth Stage
… changes induced by salt stress during early growth stage. For the first objective, QTL mapping was performed using an F2:3 population from Jake (tolerant) x Ozark (sensitive). A major QTL was found on chromosome 3 linked to four SNP loci in the same genomic region previously reported, …
-
Yield and Tiller Development of a Sudangrass and a Sorghum-Sudangrass Hybrid as Influenced by Clipping Treatments and Growth Stage at Harvest
Made available in DSpace on 2014-12-10T17:12:37Z (GMT). No. of bitstreams: 1 6812154.pdf: 2850379 bytes, checksum: 8ae81d91a9eff3d149b14e0e04324038 (MD5) Previous issue date: 1968
-
Impact of growth stage, supplemental red LED, and salinity stress on the quality and aroma attributes of hydroponic fennel (Foeniculum vulgare Mill.)
… metabolism, is influenced by factors such as growth stage and environmental conditions. Understanding how secondary metabolite biosynthesis are affected by these factors is crucial for optimizing the quality and flavor of fennel. In particular, supplemental red light and salinity are known to …
-
Screening Diverse Soybean Germplasm for Water-logging Tolerance
<p>Water-logging can be detrimental to soybean growth and development; effects range from chlorosis and stunting to yield loss and plant death. Soybean response to, and the effects of, water-logging are dependent on the growth-stage of the plant at the initiation of water-logging. The objectives of …
-
Factors affecting common lambsquarters' tolerance to imazethapyr
… than smooth pigweed, especially at the late growth stages. To determine mechanisms involved in tolerance, imazethapyr absorption, translocation, and metabolism were investigated. Decreased absorption rate of imazethapyr was observed in both species at late growth stage and these factors may …
-
An investigation into the differential response of hemp dogbane (Apocynum cannabinum L.) to two pyridine herbicides
… was made during the early reproductive growth stage as opposed to the vegetative growth stage. Twelve months after treatment, fluroxypyr provided 65 to 75 percent control of regrowth. Clopyralid treatments at this time were not significantly different than controls.
-
Dry matter estimation and potassium fertilization of intensively managed soft red winter wheat
… recommendation models for winter wheat at growth stage 30. Four methods of dry matter estimation were evaluated for their ability to predict dry matter production. The pasture probe, height, and rising plate methods did not have adequate prediction ability. The drop plate method predicted …
-
The role of foliar glucosinolates in host plant resistance of oilseed rape and mustard to the Bertha armyworm and the diamondback moth
… host plant glucosinolates and feeding and growth of a polyphagous insect, the Bertha armyworm, Mamestra configurata Walker and field infestation levels of an oligophagous insect, the diamondback moth, Plutella xylostella L. were investigated. M. configurata reared on eight rape and mustard …
-
Development of field-specific spring N rate recommendations for winter wheat
… rates was applied in early spring (Zadoks growth stage 25) and again in mid-spring (Zadoks growth stage 30) in all possible combinations. Yield data were used to calculate economic optimum N rates at growth stage (GS) 25 and GS 30 with split-application management, and at GS 25 with …
-
Correction and diagnosis of boron deficiency in corn
… as Solubor when corn plants were in the V5 to V6 growth stage. Corn grain yields averaged 13,485 kg ha⁻¹ across treatments on the seven soils. Based on published calibration data for the hot water soluble boron procedure, a corn grain yield response to boron application was not expected on any of …
-
Pest Management Studies of Early Season and Stalk-Boring Insects on Corn in Virginia
… the first study, model variables included corn growth stage and larvae per plant. In both years of this study, larvae per plant had a significant effect on grain yield. Grain yield was reduced by 13.1 and 3.65% in plants infested with four larvae per plant in 2006 and 2007, respectively. For …
-
Machine Vision Systems for Real-Time Plant Variability Sensing and in-Field Application
… variations associated with corn plant spacing, growth stage, and population can lead to a significant yield differences. Since the ability to reduce these variations is directly related to the planter performance, a machine vision-based emerged corn plant sensing system (ECS) was developed for …
-
Improving Early Season Sidedress Nitrogen Rate Prescriptions for Corn
… could be made early, i.e. by the V6 growth stage. The objectives of this research were to: i) examine the influence of soil color, soil moisture, surface crop residues, and sensor orientation on normalized difference vegetation index (NDVI) readings from corn from planting through the …
Page 1 of 8