ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). reassignment HONEYWELL INTERNATIONAL INC. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Honeywell International Inc filed Critical Honeywell International Inc Priority to US14/862,858 priority Critical patent/US10362104B2/en Assigned to HONEYWELL INTERNATIONAL INC. Original Assignee Honeywell International Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Jerry Marti Prabhat Ranjan Ajo Paul Bandi Narayanaswamy Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US14/862,858 Other versions US20170085639A1
This study demonstrated the capability of APSIM to predict growth and grain yield of wheat and barley, as well as the associated dynamics of soil water in the main cereal belts of South Australia.- Google Patents US10362104B2 - Data managerĭownload PDF Info Publication number US10362104B2 US10362104B2 US14/862,858 US201514862858A US10362104B2 US 10362104 B2 US10362104 B2 US 10362104B2 US 201514862858 A US201514862858 A US 201514862858A US 10362104 B2 US10362104 B2 US 10362104B2 Authority US United States Prior art keywords data manager application supervisor opus server Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. This suggested that sowing could be conducted at least a week earlier than currently practised in the 3 environments. Median sowing dates from these simulations were 15 May for the Lower North, 30 May for the Upper Eyre Peninsula and 24 May for Murray Mallee. At these drier sites, crop failures occurred in 5% (Upper Eyre Peninsula) and 10% (Murray Mallee) of the seasons simulated. In the drier districts of the Upper Eyre Peninsula and the Murray Mallee, nitrogen fertiliser of no more than 25 kg/ha, applied at sowing, was enough to achieve yield benefits in any given season. Long-term simulations of wheat yields showed that, with early sowing in the Lower North, median wheat yield increased by 50 kg/ha for every kilogram of nitrogen applied at sowing, up to a maximum nitrogen rate of 50 kg/ha. A satisfactory prediction of dry matter, grain yield and grain weight was obtained for wheat when the models were extended to other trials at Roseworthy (Lower North), Minnipa (Upper Eyre Peninsula) and Wunkar (Murray Mallee), based on limited soil data. This was possibly due to inadequate remobilisation of nitrogen from the straw and roots to the grain by the simulated crop. Prediction of grain protein was underestimated in all cases, including where nitrogen in the shoot was overestimated. For most variables of crop growth and soil water, the simulated data were mostly within 2 standard errors of the measured means. Thus, the soil nitrate had to be reset at sowing for the following barley crop simulated soil nitrate agreed with the measured data in this season when this nutrient was low. Simulation with SOILN2, however, largely underestimated soil nitrogen, due to excessive uptake by the simulated wheat during the season when nitrogen was abundant and water supply readily available. Simulation data for soil water, from SOILWAT2, was consistent with measured data. The NWHEAT model satisfactorily predicted above-ground dry matter, leaf area index and grain yields for both crops in rotations with either grassy (Grass) or medic (Medic) pastures, including the lack of significant response of yield to nitrogen fertiliser applied to wheat at sowing.
The Agricultural Production Systems Simulator (APSIM) suite of models was used to predict dynamics in water and nitrogen in soil, as well as the growth and yield of sequential crops of wheat and barley in pasture–wheat–barley rotations, between 19 at Roseworthy, South Australia. An exploratory evaluation of APSIM to simulate growth and yield processes for winter cereals in rotation systems in South AustraliaĪnimal Production Science, 2004 44(8):787-800