Skip to Main Content
Simulating soybean productivity under rainfed conditions for major soil types using APEX model in East Central MississippiAuthor(s): Bangbang Zhang; Gary Feng; John J. Read; Xiangbin Kong; Ying Ouyang; Ardeshir Adeli; Johnie N. Jenkins
Source: Agricultural Water Management
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (2.0 MB)
DescriptionKnowledge of soybean yield constraints under rainfed conditions on major soil types in East CentralMississippi would assist growers in the region to effectively utilize the benefits of water/irrigation man-agement. The objectives of this study were to use the Agricultural Policy/Environmental eXtender (APEX)agro-ecosystem model to simulate rainfed soybean grain yield (GY) for nine major soils during 14 years(2002–2015) and then to evaluate selected model inputs/outputs in relation to irrigation managementthat may decrease difference in simulated GY among the different soils. Values for GY ranged broadlyfrom 2.24 to 6.14 Mg ha−1across soils and years, giving a maximum yield difference of 3.90 Mg ha−1. Forthe average GY of nine soils, the range was from 3.52 to 5.42 Mg ha−1over 14 years. Averaged across14 years, GY ranged from 3.66 to 4.90 Mg ha−1across the nine soils and was affected by difference insoil texture (clay and sand percentages) and soil available water content (AWC). Simulations revealedrelatively high water stress during the R4, R5 and R6 stages of plant development (early- to mid-fruitdevelopment), suggesting great potential to enhance soybean yield if some irrigation is provided duringthese critical water stress periods; whereas, the potential was accordingly less in the normal and wetyears. Results indicated installing irrigation on Griffith, Sumter or Demopolis soils would have a largeimpact through increased crop productivity and yield stability.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationZhang, Bangbang; Feng, Gary; Read, John J.; Kong, Xiangbin; Ouyang, Ying; Adeli, Ardeshir; Jenkins, Johnie N. 2016. Simulating soybean productivity under rainfed conditions for major soil types using APEX model in East Central Mississippi. Agricultural Water Management, Vol. 177: 13 pages.: 379-391. 13 p. DOI:10.1016/j.agwat.2016.08.022
KeywordsSimulating, APEX model, Soybean productivity, Rainfed condition, Yield difference, Irrigation management
- Growth Predictions for Tree Species Planted on Marginal Soybean Lands in the Lower Mississippi Valley
- Soybean crop-water production functions in a humid region across years and soils determined with APEX model
- Dual roles of glutathione in silver nanoparticle detoxification and enhancement of nitrogen assimilation in soybean (Glycine max (L.) Merrill)
XML: View XML