β Scribed by R.H. Phipps; J. Cochrane
No coin nor oath required. For personal study only.
Bitumen mulch was sprayed over maize drills in 15--20-cm bands at a thickness of 1--2 ram. The maximum soil temperature recorded at a depth of 10 cm was up to 4.3Β°C higher in the mulched plots compared to the control plots.
During the growing season the maize in the mulched plots had consistently higher drymatter (D.M.) yields and dry-matter percentages. At the last sample date (23 October) the dry-matter yields and dry-matter percentage of the maize from the mulched and control plots were 15.0 tonne/ha at 36.5% D.M. and 11.2 tonne/ha at 28.7% D.M. respectively. Ear dry-matter yields and dry-matter percentage were also consistently higher on the mulched plots. The mulched plots also produced heavier ears with more grain/ear, higher grain D.M. percentage and a higher shelling percentage.
The possibilities for the use of mulch are discussed in relation to both grain and forage maize production.
π SIMILAR VOLUMES
Whole crop dry-matter yield and dry-matter percentage of three varieties of maize, Julia, Inra 200 and Caldera 535, sown in 1973 at 110,000 plants/ha in 70-era rows were related to accumulated temperature, Ontario Heat Units and solar radiation. The polynomial regressions accounted for more than 91%
The eectiveness of mulch and termite activity in the rehabilitation of the physical properties of crusted soil was studied in northern Burkina Faso (Province de Bam). A split plot design was used with three replications each being on one soil type. The soil types were Ferric Lixisol, Haplic Lixisol
## Abstract Polymer modified bitumen (PMB) is a binder obtained by the incorporation of polymer into the bitumen by mechanical mixing or chemical reaction. This study deals with the modification of bitumen with three types of polymers (LDPE, EVA, and SBS) in the presence of filler (CaCO~3~). The mo
## Abstract In the present paper, a mathematical model called the TEβModel has been built to describe the simultaneous transport of heat, water, gas, and solute in soil, in which the temperature effects on the transports of soil water and soil solute were taken in account. When the temperature effe