ArchontoulisLab

We study approaches to improve efficiency of cropping systems by increasing crop yields and decreasing inputs or losses such as water and nitrogen.

[ArchontoulisLab @ArchontoulisLab]

@dschachtman Great working with you @dschachtman and looking forward to more future projects! We all learned a lot

[heatherpasley @heatherpasley1]

New paper out on modelling soybean waterlogging stress. See comic abstract. @SArchontoulis #apsim
https://t.co/zazaWnJKbo

[CSIRO @CSIRO]

Check out the new website for #APSIM, a model that benefits farmers, researchers and agribusinesses by simulating plant, animal, soil, climate and management interactions. Well done APSIM Initiative partners, including #CSIROAg https://t.co/85hXoU5z8B

[ArchontoulisLab @ArchontoulisLab]

Maize root mass distribution strongly related to water tables in Iowa. Root N% distribution constant across depth. Interesting new results published in Plant Soil Journal: https://t.co/3y22ya8hYt @non_cornformist @A_OrdonezRaziel @castellmj @ISUAgWaterMgmt @SArchontoulis

[Gerasimos Danalatos @GNDanalatos]

Are you curious to see where the Watertable is in Central Iowa? 💦🌽

@Patmos_Sphere @emilytweeted1

[Sotirios Archontoulis @SArchontoulis]

Good news: above normal GDD accumulation for next week, ~ 50 GDD more. This means faster plant development, more soil N mineralization and more soil water evaporation. Check more updates here: https://t.co/rnFvAbOW8W @akrherz @isuagronomy @marklicht

[Sotirios Archontoulis @SArchontoulis]

Low temperatures not only delay crop development but also soil N mineralization. Model simulations for 3 states show ~ 20% less soil N mineral. in 2019 compared to a 35-yr average. Check more maps here: https://t.co/rnFvAbOW8W @marklicht @castellmj @isuagronomy @ArchontoulisLab

[ArchontoulisLab @ArchontoulisLab]

@non_cornformist Great job @non_cornformist and @emilytweeted1 . Good to have alfalfa root mass profiles and compare with @A_OrdonezRaziel row crops and @RanaeDietzel prairies root profiles! At what depth did you sample?

[Sotirios Archontoulis @SArchontoulis]

some action from the #apsim 2019 workshop day 2 at @IowaStateU w/ @DeanHolzworth @Patmos_Sphere @heatherpasley1 @ChristosJohnson @Chatter_Nilovna @LeannaLeverich @YunjiaoZhu @KSUCROPS @jiqbalsoil @ISUBiomass @soilnwater @leoNitrogen @aacorrendo @SamPhillipsABE @TeoHartman1 & ...

[Sotirios Archontoulis @SArchontoulis]

Thank you all for a great 3-day #apsim workshop @DeanHolzworth @Patmos_Sphere @heatherpasley1 @ChristosJohnson @Chatter_Nilovna @LeannaLeverich @YunjiaoZhu @soilnwater @leoNitrogen @aacorrendo @SamPhillipsABE @AidanLiao @agbirbakos @Gerasimos_Danal & ...

[heatherpasley @heatherpasley1]

Apsiming successfully. #isuapsim2019 #apsim ⁦@ArchontoulisLab⁩

[Patrick Edmonds @Patmos_Sphere]

Day 2 of another fun filled day of modeling and learning! @castellmj giving a presentation on nitrogen cycling with respect to soybean. #APSIM2019

[Patrick Edmonds @Patmos_Sphere]

Opening statements by @isuagronomy's @krlamkey and CSIRO's @DeanHolzworth #APSIM2019

[ArchontoulisLab @ArchontoulisLab]

updated lab group photo for 2019 with @SArchontoulis @RanaeDietzel @A_OrdonezRaziel @Patmos_Sphere @emilytweeted1 @heatherpasley1 @Gerasimos_Danal @non_cornformist @Mitch_Baum Isaiah, Kyle, Angelo, and others! @isuagronomy

[Gina Nichols @non_cornformist]

Tile drainage is working it’s magic in Nashua; WT at 1.5 m depth, corn+soy emerged, sensors installed.

[ArchontoulisLab @ArchontoulisLab]

Model simulations of soil moisture on 5/15 and 5/30. It is wet & gets wetter deeper in the profile but it will get better next week! Values > 1 mean wet soils; 1 is field capacity. A value < 0.9 or so is need for field operations #ISU_FACTS

[Patrick Edmonds @Patmos_Sphere]

Taking advantage of the break in rain with @heatherpasley1 to put up instruments and soil sample in south-cental Iowa. Noticed the water table reached about a foot below ground at one end of the field! @ArchontoulisLab

[ArchontoulisLab @ArchontoulisLab]

With the 2019 planting delays, expected harvest dates of different hybrids come into discussion. By using data from IA, MN, and ND and 73-115 day hybrids we published a new model to assist with these decisions: https://t.co/2swR6mPcfF @rmartinezferia @marklicht @isuagronomy

[ArchontoulisLab @ArchontoulisLab]

Agenda & registration link for the 5th #APSIM training course to be held in Ames, IA from June 10 to 12: https://t.co/fTOnet2Ivd . 25 hours of crop and soil modeling! Workshop is filling up quickly…. @DeanHolzworth thanks for coming!

[Dr. S. Carolina Córdova @CaroCordovaEc]

📢RT My latest article: "#Soybean N fixation dynamics in Iowa USA" is out! Includes the Rates of Soybean #BNF in highly fertile soils and rainfed fields, Check this out: https://t.co/7oAGHCHwdG Thanks to my collaborators @ArchontoulisLab @castellmj & funding @IowaSoybeans, others