We study approaches to improve efficiency of cropping systems by increasing crop yields and decreasing inputs or losses such as water and nitrogen.
Ames, IA
Joined May 2016
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ArchontoulisLab retweeted
New paper out on modelling soybean waterlogging stress. See comic abstract. @SArchontoulis #apsim
frontiersin.org/articles/10.…
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: rdcu.be/bPIvf @non_cornformist @A_OrdonezRaziel @castellmj @ISUAgWaterMgmt @SArchontoulis
ArchontoulisLab retweeted
Are you curious to see where the Watertable is in Central Iowa? 💦🌽
@Patmos_Sphere @emilytweeted1
ArchontoulisLab retweeted
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: crops.extension.iastate.edu/… @akrherz @isuagronomy @marklicht
ArchontoulisLab retweeted
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: crops.extension.iastate.edu/… @marklicht @castellmj @isuagronomy @ArchontoulisLab
ArchontoulisLab retweeted
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 & ...
ArchontoulisLab retweeted
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 & ...
ArchontoulisLab retweeted
Day 2 of another fun filled day of modeling and learning! @castellmj giving a presentation on nitrogen cycling with respect to soybean. #APSIM2019
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
ArchontoulisLab retweeted
Tile drainage is working it’s magic in Nashua; WT at 1.5 m depth, corn+soy emerged, sensors installed.
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
ArchontoulisLab retweeted
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
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: nature.com/articles/s41598-0… @rmartinezferia @marklicht @isuagronomy
Agenda & registration link for the 5th #APSIM training course to be held in Ames, IA from June 10 to 12: register.extension.iastate.e… . 25 hours of crop and soil modeling! Workshop is filling up quickly…. @DeanHolzworth thanks for coming!
ArchontoulisLab retweeted
📢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: authors.elsevier.com/a/1Yute… Thanks to my collaborators @ArchontoulisLab @castellmj & funding @IowaSoybeans, others
ArchontoulisLab retweeted
Nothing like the first official field day to make you realise how out of shape you got during winter. Happy to have help. @ArchontoulisLab @Gerasimos_Danal
Welcoming a new member to our lab, Dr. Heather Pasley! @SArchontoulis @castellmj #Fortheloveofsoils #APSIMforever #emilytweeted
