Please read the abstract in the section 00front of this document. / Dissertation (MSc Agric (Weed Science))--University of Pretoria, 2007. / Plant Production and Soil Science / MSc Agric / unrestricted

North Dakota soybean [Glycine max (L.) Merrill] management varies across the state, resulting in yield differences. Eight soybean seeding rates (starting at 197600 and increasing by 49400 live seed ha-1 increments) and row spacing (30 and 61 cm) were evaluated in 15 North Dakota environments in 2017-2018 to determine plant densities, seed yield, and plant loss, which were compared with soybean producer field data. Planting 30 cm row spacing yielded 183 kg ha-1 greater than 61 cm row spacing. On farm, maximum yields occurred at 414000 live seed ha-1 and final plant densities of 352000 plants ha-1. In research plots, 494000 live seed ha-1 had the highest yield. On farm, 8.9% plant loss occurred after plant establishment while research data observed 6.9% plant loss. North Dakota soybean producers should use narrow row spacing, use final plant density to estimate yields, and 444600 live seed ha-1 provided the highest net revenue. / North Central Soybean Research Program / North Dakota Soybean Council

This diploma thesis deals with the business plan on expanding the design-building company. It covers theoretical description of the business aims and the proposition itself containing the procedures of how expansion can be realized.

>Magister Scientiae - MSc / In this work we have determined the spectroscopic or static quadrupole moment of the rst excited state (QS (2+1) lying at 2230.6 keV in 32S using the reorientation e ect. The Coulomb-excitation experiment at safe bombarding energies was performed at iThemba LABS's AFRODITE vault, where 32S beams at 120.3 MeV were bombarded onto a 194Pt target of 1 mg/cm2 thickness. The beam energy has been chosen such that the separation between nuclear surfaces is greater than 6.5 fm at all scattering angles, in order to avoid nuclear interactions. A double-sided CD-type S3 silicon detector, with 24 rings and 32 sectors, has been placed upstream (at backward angles) to detect the scattered particles. Gamma rays have been detected with the AFRODITE clover array. This particle-gamma coincidence experiment allows for an angular distribution and Doppler correction of the gamma rays emitted at 9% the speed of light. The cross sections (or gamma-ray integrated yields) measured as a function of scattering angle at backward angles are sensitive to second-order perturbation e ects in Coulomb excitation, i.e., diagonal matrix elements which are directly related to the spectroscopic quadrupole moment. The gamma-ray integrated yields obtained from this experiment are compared with the GOSIA simulations, yielding a new measurement of QS (2+1) = 􀀀0:10 0:7 eb, which corresponds to a prolate shape in the intrinsic frame of the nucleus. The uncertainty of this measurement is limited by statistics. This result agrees with previous measurements and con rms the zig zag of shapes at the end of the sd shell when approaching the doubly-magic nucleus 40Ca. Nonetheless, the mystery continues as a prolate shape for the rst 2+ disagrees with modern theoretical mean- eld calculations and the pairing coupling model.

Eighty-five samples of milk and Swiss cheese made from the same milk were collected at Cache Valley Dairy Association, Smithfield, Utah, between August, 1979, and July, 1980. The weights of the milk, Swiss cheese and the trim were carefully recorded. The milk samples were analyzed for fat and protein, and the cheese samples were analyzed for fat, protein and moisture. An attempt was made to predict Swiss cheese yields from the fat and protein content of the milk and the moisture content of the cheese. The data were analyzed statistically by Gauss-Newton non-linear least squares method of iteration. Three formulas for predicting Swiss cheese yield were derived. The differences among the three formulas in predicting actual yield were insignificant. A good comparison was demonstrated between Swiss cheese yield and fat and protein in milk. The effect of season on cheese yield was also evaluated. The highest yield of Swiss cheese was in December and the lowest yield was in July. This corresponded with high and low levels of fat and protein in the milk.

Corn dry matter and grain yields were evaluated for 40 unique limited irrigation treatments and compared to a standard nonlimited treatment. The various treatments were imposed by an interaction of time (i.e., growth stage) and water level . Irrigation was so scheduled that each treatment received water at evaporative demand rates during either the vegetative or the pollination stage . The total irrigation water applied for the growing season ranged from 11 em to 43 em. Dry matter and grain yields were essentially the same for all treatments. Limited irrigation in the vegetative stage did not reduce growth if there were no further limitations in the pollination stage Limited irrigation in the pollination stage did not result in yield reductions if there were no limitations in the vegetative stage. Limited irrigation in the maturity stage did not effect yields if there were no limitations in the vegetative stage and/or the pollination stage. Chronic, season long irrigation deficiencies resulted in yield reductions. In each case, the soil water profile was full at the outset of the growing season. The silt loam soil of the experimental site was able to supply sufficient water to the plants during periods of nonirrigation or limited irrigation . The corn plants responded to available water, whether it was supplied by irrigation or the soil . Limited irrigation was effective in saving irrigation resources without reducing yields. Some of the variables which appeared to have a significant effect on yield response to limited irrigation included : beginning soil water status, soil water storage capacity, timing of irrigation, and corn hybrid and climatic interactions. Management decisions relating to limited irrigation on corn should not be made independent of these factors.

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