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 14 of 14 for “"Previous crop"”.
-
Influence of Transplanter Modification and Previous Crop on the Production of No-Till Dark Tobacco
… throughout the agricultural community, many crops have had success in producing comparable yields while reducing input costs and saving soil resources. For this experiment, a traditional tobacco transplanter was modified for use in a no-till environment. All modifications were fabricated …
-
Fate and Utilization of Fertilizer in Inbred and Hybrid Corn Production
To evaluate the impact of N rate and crop rotation on uptake of fertilizer N in seed corn production, corn inbred lines were grown in corn-corn and corn-soybean (Glycine max L. Merr.) rotations using N application rates of 0 to 144 lb acre$\sp{-1}$. When corn was the previous crop, seed yield of …
-
Methane Emissions and Ammonia Volatilization from Drill-Seeded, Delayed-Flood Rice on a Silt-Loam Soil in Arkansas
… CH4-C ha-1 for a primary rice (Oryza sativa L.) crop. The emissions factor is based on studies that do not adequately represent current management practices in Arkansas. Another concern is pre-flood fertilizer nitrogen (N) management, as the common N source, urea, is prone to loss via ammonia …
-
Managing Continuous Corn for Yield and Soil Productivity
… attempt to identify how SOM is affected by the previous crop. At the one location where crop-derived C returned to the soil over the 8 yr of this study was similar between both phases of the CS rotation, SOC and the soil C/N ratio were greater following corn. Thus, when comparing SOC or the soil …
-
Generating a climatology of surface solar radiation over the UK with application to wheat yield prediction
… (GWL). Solar radiation drives photosynthesis in crops, highlighting the importance of knowing the spatial and temporal distribution of this valuable resource. Harnessing both state-of-the-art satellite based SIS estimates and model based temperature records enabled an investigation of the …
-
Corn residue, tillage, and row spacing effects on soybean
… yield to management of corn residue from the previous crop, they do indicate that tilled soybeans had higher yields in Urbana, the northernmost environment with more productive soils, but in the southern environments with less productive soils, soybean yield did not respond to tillage …
-
THE INFLUENCE OF PULSE CROPS ON SOIL PHOSPHORUS AVAILABILITY TO SUBSEQUENT WHEAT CROPS IN THE BROWN SOIL ZONE OF SASKATCHEWAN
… (P) availability. The influence of pulse crops on soil P availability and P uptake by subsequent wheat (Triticumaestivum L.) crops was assessed in a series of laboratory experiments and field studies conducted in the Brown soil zone of Saskatchewan. Pulse residues generally had higher P …
-
Methane Emissions from Direct-Seeded, Delayed-Flood Rice Grown on a Clay Soil
… CH4 fluxes and emissions, and 3) the impact of previous crop [rice or soybean (Glycine max L.)] and cultivar (Cheniere, Taggart, and CLXL745) on CH4 fluxes and emissions. Total season-long emissions in 2012 were greatest in the high vegetation treatment (P < 0.01), amounting to 35.6 kg CH4-C …
-
FUNCTIONAL DIVERSITY OF FUNGI ASSOCIATED WITH DURUM WHEAT ROOTS IN DIFFERENT CROPPING SYSTEMS
… may influence root fungi of the following crop and affect the yield. The main objective of this research was to explain the difference in durum wheat (Triticum turgidum L.) yield the year after pea and chickpea crops through changes in the functional diversity of wheat root fungi. The …
-
Validation of N-STaR Nitrogen Rate Recommendations and Evaluation of N-STaR Soil Sampling Procedures for Clay Soils in Arkansas
… N recommendation (SR) based on soil texture, previous crop, and rice cultivar, and the Nitrogen-Soil Test for Rice (N-STaR) which quantifies the potentially mineralizable-N of the soil and provides a site-specific N recommendation. The N-STaR program has recently been developed, and the …
-
Examining the effect of rotation sequence on biological nitrogen fixation of pulse crops
… is often the most limiting nutrient in prairie crop production and is applied in the greatest quantity. Including pulse crops in rotations has become a popular option due to their ability to form symbiotic relationships with dinitrogen-fixing bacteria. This relationship means pulse crops can …
-
Influence of tillage and mulch on the early growth of corn
… soil and mulch consisting of residue from the previous crop, were superimposed on each tillage treatment. Four planting dates of 3-week intervals were also included to provide a range of soil temperatures;Soil temperature was monitored during the test period, using thermocouples and a …
-
Greenhouse gas emissions from production of Miscanthus x giganteus on a Mollisol
… for fossil fuel is reduced if the biofuel crops also emit large amounts of greenhouse gases (GHGs), such as carbon dioxide (CO2) and nitrous oxide (N2O) during their production. Most crops require nitrogen (N) fertilization to maximize productivity, but the amount of N fertilizer Miscanthus …
-
Contribution of crop morphological characteristics and density of selected crops to weed species composition and suppression
… growing season to investigate the effect of crop species and sowing density on weed dynamics, productivity and species composition. Crops with a spreading (narrow-leafed lupin, Lupimus augustifolius and dwarf French bean, Phaseolus vulgaris), rosette (turnip, Brassica campestris and forage …