Browsing College of Agriculture and Bioresources by Title
Now showing items 1427-1446 of 2616
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Laboratory to the marketplace: scientific challenges in commercializing a phosphate solubilizing microorganism
(2004-02-19)The commercialization of phosphate inoculant is a challenging process. The active ingredient of the phosphate inoculant JumpStart® (P. bilaiae) was isolated in 1982. Although the concept of P solubilization was proven, ... -
Landforms: their role in pollution
(1972-02-17) -
Landscape position and depth affect microbial abundance and community composition at three positions in an agricultural landscape
(2012-03-13)Stabilization/destabilization mechanisms of deep soil carbon are not well understood. A number of different controlling mechanisms are suggested; here we explore differences in microbial abundance and community structure ... -
Landscape- and micro-scale variability of nitrogen fixation by chickpea
(1997-02-20)A landscape-scale study was conducted near Biggar, SK, to estimate N2 fixation by chickpea (Cicer arietinum) using the natural 15N abundance method. The spatial variability of N2 fixation was investigated at both the ... -
A landscape-scale assessment of the nitrogen and non-nitrogen benefits of pea in a crop rotation
(1996-02-22)The inclusion of a pulse crop in a rotation could influence the seed yield of a succeeding cereal crop in different slope positions of a field. A landscape-scale study was established in 1993 to examine the N contribution, ... -
Landscape-scale controls on the availability of pea-residue nitrogen for the subsequent wheat crop
(1995-02-23)Increased N uptake is a major mechanism responsible for the rotation benefit of a pulse crop to a succeeding cereal crop. The objective of our study was to determine the sources of N in pea-wheat vs. wheat-wheat rotation ... -
Landscape-scale variability of N2 fixation by pea
(1994-02-24)The landscape-scale variability of N2 fixation by pulse crops is an important part in the intensity of N cycling in a hummocky terrain. A 100-gridpoint landscape-scale research design was established at a site in the thick ... -
Landscape-scale variability of nitrogen fixation and N balance of lentil
(1995-02-23)A study was conducted near Dinsmore, SK in the Dark Brown Soil Zone to determine the landscape-scale variability of N2-fixation and N balance of a lentil crop. Stable 15N isotope dilution method was used to determine ... -
Landscape-scale variability of nitrogen fixation by pea and the availability of its residue-N for the succeeding crop
(1993-02-25)The main objectives of this study were to estimate the variability in N2-fixation across a large field and to determine whether the availability of legume residue-N to the succeeding crop was controlled by position of ... -
Large scale validation of an am fungal-based biofertilizer and its management with rhizobium for bean production, in central and western cuba
(2013-03-05)Forty workshops were given to teach farmers how to improve fertilizer use efficiency in bean through the use of biofertilizers. Experiments were set up in 50 fields on commercial farms. Two treatments were applied in all ... -
Large-scale mapping of Solonetzic soils using image analysis and global positioning systems (GPS)
(1995-02-23)Image analysis is a valuable tool that can be used to map soil properties that affect management practices in Solonetzic-Chemozemic soil landscapes. Because of the highly variable nature of these soil landscapes, only ... -
Late fall seeding of coriander
(1999-02-25) -
Leaching and recovery of 15N in dryland and irrigated cropping systems
(1989-02-16)Laird-lentil and Neepawa-wheat were grown under irrigation in 1987 at the experimental Irrigation Farm at Outlook under three levels of N: 10, 50, and 100 kg of NH4NO3, double labelled with 15N. A similar experiment was ... -
Leaching of nitrates and herbicides under low pressure (high volume) irrigation
(1992-02-20)The potential for contamination of groundwater by nitrates or pesticides from irrigated soils has not been fully evaluated. This project was initiated to monitor nitrate and herbicide leaching in a tile-drained field at ... -
Leaf analysis as a guide to sulfur fertilization of legumes
(1992-02-20)Tissue analysis is a diagnostic tool which can be used in identifying S deficiencies and predicting S fertilizer requirements of crops. A water extraction procedure for removal and measurement of inorganic sulfate in plant ...