Suitability of NDVI index to pea condition evaluation at diverse phosphorus fertilization

Janina Gospodarek , Agnieszka Klimek-Kopyra , Milena Rusin

Abstract

In this 3-year study the suitability of the normalized differenced vegetation index (NDVI) to the evaluation of pea plant infestation by aphids and expected seeds yield was investigated. The effect was assessed in the conditions of the increasing doses of phosphorus fertilization (0, 70, and 140 kg P2O5 ha–1) and in the different pea aphid (Acyrthosiphon pisum Harris) occurrence on six various cultivars of pea. Independent of the dose, the phosphorus fertilization supported the occurrence of aphids on pea plants of Batuta, Model, and Protecta cultivars where in Tarchalska and Mecenas cultivars only the standard dose (70 kg ha–1) showed such effect. NDVI index was not clearly, unambiguously correlated to the intensity of A. pisum occurrence. Such factors as the deficiency or excessive amount of phosphorus, as well as meteorological conditions and the cultivar of host plant had the greater effect on its value than the presence of aphids. All this testifies that the NDVI index is not reliable indicator of aphid occurrence on pea, however it can offer a promising method to select the cultivars under sub-opitmal conditions. The seed yield was strongly related to agronomical factors (fertilization, cultivars) and plant (NDVI) variable, while marginally to environmental variable (aphids).
Author Janina Gospodarek (FoAaE / DoMaB)
Janina Gospodarek,,
- Department of Microbiology and Biomonitoring
, Agnieszka Klimek-Kopyra (FoAaE / DoAaPP)
Agnieszka Klimek-Kopyra,,
- Department of Agroecology and Plant Production
, Milena Rusin (FoAaE / DoMaB)
Milena Rusin,,
- Department of Microbiology and Biomonitoring
Journal seriesItalian Journal of Agronomy, ISSN 1125-4718, e-ISSN 2039-6805, (N/A 40 pkt)
Issue year2020
Vol15
No1
Pages35-47
Publication size in sheets0.6
Article number1418
ASJC Classification1100 General Agricultural and Biological Sciences
DOIDOI:10.4081/ija.2020.1418
URL https://www.agronomy.it/index.php/agro/article/view/1418/1146
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne (CC-BY-NC); after publication
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Suitability of NDVI index to pea condition evaluation at diverse phosphorus fertilization of 05-03-2020
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Score (nominal)40
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.504; WoS Impact Factor: 2018 = 0.965 (2) - 2018=1.111 (5)
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