REVIEW | doi:10.20944/preprints202111.0520.v1
Subject: Biology, Agricultural Sciences & Agronomy Keywords: potato; tillage types; soil properties; diseases; tuber yield; quality
Online: 29 November 2021 (11:10:46 CET)
Potato is one of the main crops grown worldwide under different climatic conditions. Potato is conventionally produced under intensive tillage practices under the same or different soil types. Research has shown some contrasting effects of the tillage practices on the soil properties, crop growth, yield, and quality. Under the reducing available freshwater for food production, soil management practices are more targeting conservation and system sustainability. It is therefore critical to revisit literature on the tillage practices and their impact on the soil, crop, and crop yield. This review presents research results of studies conducted exclusively on potatoes comparing different types of tillage practices and is a valuable source of information for potato growers and scientists as it is not only focused on the impact of tillage practices on soil properties but also on potato tuber yield and grade, tuber specific gravity, and the impact of tillage practices on diseases in potatoes.
ARTICLE | doi:10.20944/preprints202102.0472.v1
Online: 22 February 2021 (13:19:25 CET)
The potato tuber moth PTM, Phthorimaea operculella, is one of the most economically important potato pests worldwide. In the present study, the potential of Steinernema feltiae and Steinernema carpocapsae for controlling PTM in potato tubers was evaluated compared to alpha-cypermethrin. Steinernema carpocapsae in both concentrations (12.6×106IJs and 6.2×106IJs) showed a lower number of emerged insects than alpha-cypermethrin (10 mg ai l-1). Alpha-cypermethrin (20 mg ai l-1) showed the highest efficacy against PTM (81.17%), S.carpocapsae (12.6×106IJs), and alpha-cypermethrin (10 mg ai l-1) showed similar efficacy (72.53%) while S. feltiae (6.2×106IJs) showed the lowest efficacy (39.04%). The results showed that S.carpocapsae in both concentrations and S. feltiae (12.6×106IJs) were efficient the same as alpha-cypermethrin (10 mg ai l-1) having no environmental and health adverse impacts issued in the chemical insecticides usage. Both concentrations of alpha-cypermethrin and S. carpocapsae showed the least tuber damage with no significant differences, while it was as high as the control (59.26%) in both concentrations of S. feltiae. This promising finding introduces EPNs as a part of the potato tuber protection program in storage. Accordingly, EPNs can be considered as an appropriate alternative to synthetic chemicals for PTM control without any residue and health problems.