Geography and Regional Planning

Geography and Regional Planning

Evaluation of sesame tillage and fertilization practices with respect to water deficit stress conditions

Authors
Seyed Behzad Moeini 1
Hamidreza Tohidi Moghadam 2
Porang Kasraei 3
Mohammad Nasri 2
Farshad Ghooshchi 4
1 Ph.D. Student of Agriculture Department, Faculty of Agriculture, Varamin-Pishva Branch Islamic Azad University, Varamin, Iranin
2 Associate Professor of Agriculture Department, Faculty of Agriculture, Varamin-Pishva Branch Islamic Azad University, Varamin, Iran.
3 Professor of Agriculture Department, Faculty of Agriculture, Varamin-Pishva Branch Islamic Azad University, Varamin, Iran.
4 Associate Professor of Agriculture Department, Faculty of Agriculture, Varamin-Pishva Branch Islamic Azad University, Varamin, Iran
10.22034/jgeoq.2025.486227.4161
Abstract
The aim of this study was to evaluate the tillage and fertilization methods of sesame plants with respect to the impact of water deficit stress conditions in the years (2022-2023). The experiment was performed as a split plot in the form of a randomized complete block design with three replications. The main factors included three tillage methods (no tillage, low tillage and conventional tillage), the sub-factor of two irrigation levels (normal and low irrigation) and the sub-factor of four fertilization methods (no fertiliser, nitrogen fertiliser, vermicompost and combination of nitrogen and vermicompost). The results showed that the reactions of the traits to water deficit stress were different in different combinations of fertilizers and tillage. In 2022 the reduction of grain yield in different treatments ranged from 14.3% (low tillage with combined nitrogen fertilizer and vermicompost) to 23% (conventional tillage without fertilizer). In 2023 the decrease in grain yield was between 9.8% (low tillage with integrated fertilizer) and 20% (conventional tillage without fertilizer). In both years, the least negative effect was observed in the low tillage treatment with combined nitrogen fertilizer and vermicompost and the highest negative effect was observed in the conventional tillage treatment without fertilizer. Treatments without tillage and treatments with separate application of nitrogen fertilizer or vermicompost showed moderate results. Based on the results of this two-year study, the use of low-tillage method along with the combined application of nitrogen fertilizer and vermicompost is recommended for managing sesame fields in water-limited conditions.
Keywords
Soil tillage
fertilization
sesame
susceptibility
water deficit stress
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