Potato nutritional status at the onset of tuberisation - a yield prediction tool

A reliable tuber yield prognosis requires a complex statistical analysis of potato nutritional status in the fully developed 4th leaf at the onset of tuberisation. This hypothesis was validated in the series of field experiments conducted in 2006–2008 in Poland. The experimental design was composed...

Full description

Saved in:
Bibliographic Details
Published in:Plant, soil and environment soil and environment, 2020-01, Vol.66 (2), p.86-92
Main Authors: Frąckowiak, Karolina, Potarzycki, Jarosław, Grzebisz, Witold, Szczepaniak, Witold
Format: Article
Language:English
Subjects:
Annual variations
Copper
Design of experiments
Experimental design
Fertilizers
Field tests
leaves
Limiting nutrients
macronutrient
Magnesium
micronutrient
Nitrogen
nutrient status diagnosis
Nutrients
Nutritional status
Potatoes
solanum tuberosum l
Statistical analysis
Sulfur
Urea
Vegetables
Zinc
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A reliable tuber yield prognosis requires a complex statistical analysis of potato nutritional status in the fully developed 4th leaf at the onset of tuberisation. This hypothesis was validated in the series of field experiments conducted in 2006–2008 in Poland. The experimental design was composed of two nitrogen (N) rates (60, 120 kg/ha), two N fertilisers (Urea and Agrotain), two rates of sulfur (0, 50 kg/ha). The marketable tuber yield of cv. Zeus ranged from 31.3 to 59.3 t/ha in 2008 and 2006, respectively. Despite annual variability, the potato presented a good nutritional status. In 2008, the contents of N, Mg, Cu and Zn were about 33% lower as compared to 2006. The stepwise and path analyses indicated N, Mg and Cu as the key yield-limiting nutrients. The diagnosis and recommendation integrated system (DRIS) showed that a slight imbalance of N and Mg did not disturb tuber yield, provided a positive balance of K was maintained. The Mg index, as a result of the DRIS procedure, emerged as the best single predictor of potato yield.
ISSN:1214-1178
1805-9368
DOI:10.17221/533/2019-PSE