Organic potato production
-
Upload
tsolmon-nyamdavaa -
Category
Science
-
view
201 -
download
0
Transcript of Organic potato production
![Page 1: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/1.jpg)
ICOAS 2015
5TH INTERNATIONAL CONFERENCE ON ORGANIC AGRICULTURE SCIENCES, 14-17 OCTOBER 2015, BRATISLAVA – SLOVAKIA
Effect of Pre-crops, Cover crops and Manure Application on Organic Potato
Production in a Field Experiment in eastern Austria
Tsolmon NyamdavaaUniversity of Natural Resources and Life Sciences, Vienna,
Department Sustainable Agricultural Systems
![Page 2: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/2.jpg)
Material and Methods
• Trial site: Raasdorf (150 m above sea level, 9.8° C, 520 mm; Calcaric Phaeozem, silty loam (2.2 % TOC, pH-7.6)
• Preceding crop species: Lucerne, field pea, spring barley
• Soil amendments: cover crops, farmyard manure
• Succeeding main crop: Potatoes (Ditta)
![Page 3: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/3.jpg)
Material and Methods
Potato yield parameters: Soil parameters:
•Total fresh matter, marketable, dry matter yield
•Tuber size distribution, external and internal quality
•Water content • Inorganic N
availability (NO3- - N
and NH4+ - N)
(in March, up to 90 cm)Statistical analysis: SPSS software (Version 18.0), ANOVA,
Tukey’s test (α = 0.05 / 0.01)
![Page 4: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/4.jpg)
Results
• Soil Nmin content, potato tuber yield differed significanty (P < 0.01) between years
• No significant effects by pre-crops on tuber yield and quality
Figure 1 Two-way interaction for soil NO3- - N
content Legend: +CC: with cover crop, -CC without cover crop
![Page 5: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/5.jpg)
• Four-way interaction effect occured for total tuber yield
• No clear benefits of cover crops and manure
• A positive significant cover crop effect on large sized tubers only.
Results
Figure 2. Complete (pre-crop, cover crop. Manure and year) interaction effect for tuber yield
Legend: +CC: with cover crop, -CC without cover crop
![Page 6: Organic potato production](https://reader035.fdocuments.us/reader035/viewer/2022062904/587a7b561a28abf0468b6055/html5/thumbnails/6.jpg)
Conclusions
• Field pea can be increase the soil Nmin in silty loam soil in unfavorable year
• Cover crops and manure not consistently enhance potato tuber yield and quality in a high fertility soil.