Soil Physical Properties, Nitrogen, and Crop Yield in Organic Vegetable Production Systems

2016 ◽  
Vol 108 (3) ◽  
pp. 1142-1154 ◽  
Author(s):  
Craig G. Cogger ◽  
Andy I. Bary ◽  
Elizabeth A. Myhre ◽  
Ann-Marie Fortuna ◽  
Doug P. Collins
Soil Research ◽  
2017 ◽  
Vol 55 (8) ◽  
pp. 778
Author(s):  
G. S. A. Castro ◽  
C. A. C. Crusciol ◽  
C. A. Rosolem ◽  
J. C. Calonego ◽  
K. R. Brye

This work aimed to evaluate the effects of crop rotations and soil acidity amelioration on soil physical properties of an Oxisol (Rhodic Ferralsol or Red Ferrosol in the Australian Soil Classification) from October 2006 to September 2011 in Botucatu, SP, Brazil. Treatments consisted of four soybean (Glycine max)–maize (Zea mays)–rice (Oryza sativa) rotations that differed in their off-season crop, either a signal grass (Urochloa ruziziensis) forage crop, a second crop, a cover crop, or fallow. Two acid-neutralising materials, dolomitic lime (effective calcium carbonate equivalent (ECCE) = 90%) and calcium-magnesium silicate (ECCE = 80%), were surface applied to raise the soil’s base saturation to 70%. Selected soil physical characteristics were evaluated at three depths (0–0.1, 0.1–0.2, and 0.2–0.4 m). In the top 0.1 m, soil bulk density was lowest (P < 0.05) and macroporosity and aggregate stability index were greatest (P < 0.05) in the forage crop compared with all other production systems. Also, bulk density was lower (P < 0.05) and macroporosity was greater (P < 0.05) in the acid-neutralising-amended than the unamended control soil. In the 0.1–0.2-m interval, mean weight diameter and mean geometric diameter were greater (P < 0.05) in the forage crop compared with all other production systems. All soil properties evaluated in this study in the 0.2–0.4-m interval were unaffected by production system or soil amendment after five complete cropping cycles. Results of this study demonstrated that certain soil physical properties can be improved in a no-tillage soybean–maize–rice rotation using a forage crop in the off-season and with the addition of acid-neutralising soil amendments. Any soil and crop management practices that improve soil physical properties will likely contribute to sustaining long-term soil and crop productivity in areas with highly weathered, organic matter-depleted, acidic Oxisols.


2007 ◽  
Vol 99 (4) ◽  
pp. 1104-1110 ◽  
Author(s):  
J. A. Quincke ◽  
C. S. Wortmann ◽  
M. Mamo ◽  
T. Franti ◽  
R. A. Drijber ◽  
...  

2018 ◽  
Vol 184 ◽  
pp. 153-163
Author(s):  
Peter Bilson Obour ◽  
Dorothee Kolberg ◽  
Mathieu Lamandé ◽  
Trond Børresen ◽  
Gareth Edwards ◽  
...  

2019 ◽  
Vol 194 ◽  
pp. 104334 ◽  
Author(s):  
Igor Dekemati ◽  
Barbara Simon ◽  
Szergej Vinogradov ◽  
Márta Birkás

2008 ◽  
Vol 88 (4) ◽  
pp. 553-558 ◽  
Author(s):  
Linnell Edwards ◽  
Jack Burney

Using blanket crops of ryegrass and under-seeded barley (with red clover) super-imposed on standard erosion plots just coming out of potatoes, this study assessed the influence of preceding soil-and-crop management treatments viz., straw mulch, compost and liquid pig manure (LPM) (antecedent input variables) on crop yield, soil physical properties and erosion amounts (subsequent response variables). There were no significant carry-over effects on erosion amounts, and effects on yield were limited to red clover. However, soil properties (reflecting compactability, structure and soil water retention) were affected throughout - showing general improvements of up to 46%. Thus, soil water content (SWC) was 9.4% greater with compost amendment than it was for the control. SWC with compost was also greater than it was with straw mulch by 7.9%. Soil organic matter (SOM) showed a 13% increase with compost amendment relative to the control. SOM also showed a 5% increase with compost relative to straw mulch. Compost uniquely gave yield increases in red clover, double that of the control, while LPM gave unique increases in hydraulic conductivity and SOM under red clover to the extent of 60 and 24% (respectively) relative to the control. Key words: Soil physical properties, soil erosion, organic amendments, potatoes, barley, red clover


Sign in / Sign up

Export Citation Format

Share Document