Articles
Effect of different approaches to soil surface maintenance on weed infestation and growth performance of young peach orchard
Article number
1449_34
Pages
257 – 264
Language
English
Abstract
The study was carried out between 2020 and 2022 in a young peach plantation established in the territory of the Fruit Growing Institute – Plovdiv (Bulgaria). Object of the study was ’Redhaven’ cultivar grafted on the vegetative rootstock GF 677. The following variants of maintaining of the soil surface were investigated: soil application with flumioxazin – Pledge 50 WP at two rates (200 and 400 g ha‑1); foliar treatment with the herbicide combination flumioxazin + quizalofop-ethyl – Pledge 50 WP (200 g ha‑1) + Targa Super 5 EC (2.0 L ha‑1); foliar treatment with glyphosate – NASA 360 EC (5.0 L ha‑1); non-chemical methods: mechanized soil tillage and an untreated control.
The results for the efficiency of the applied herbicides and rates showed the same trend throughout years of the study and a very good control of the weed vegetation was achieved.
In the variants treated with flumioxazin – Pledge 50 WP – 200 g ha‑1 and Pledge 50 WP – 400 g ha‑1, weed species were not detected until the 90th day after the date of treatment.
On the 120th day, single plants of purslane species appeared under this treatment, which is typical for the so-called late secondary weed infestation.
The applied herbicide combination Pledge 50 WP – 200 g ha‑1 + Targa Super 5 EC – 2.0 L ha‑1 acted as a total herbicide and destroyed fully the developed weed vegetation.
The results about the effect of the different approaches for soil surface maintenance on the tree growth showed the same trend for higher values of all the analyzed indicators in the variants with the applied weed control compared to the untreated weed-infested control.
The highest values for trunk cross-sectional area and crown volume were reported in the variant treated with the higher rate of flumioxazin – Pledge 50 WP – 400 g ha‑1.
The results for the efficiency of the applied herbicides and rates showed the same trend throughout years of the study and a very good control of the weed vegetation was achieved.
In the variants treated with flumioxazin – Pledge 50 WP – 200 g ha‑1 and Pledge 50 WP – 400 g ha‑1, weed species were not detected until the 90th day after the date of treatment.
On the 120th day, single plants of purslane species appeared under this treatment, which is typical for the so-called late secondary weed infestation.
The applied herbicide combination Pledge 50 WP – 200 g ha‑1 + Targa Super 5 EC – 2.0 L ha‑1 acted as a total herbicide and destroyed fully the developed weed vegetation.
The results about the effect of the different approaches for soil surface maintenance on the tree growth showed the same trend for higher values of all the analyzed indicators in the variants with the applied weed control compared to the untreated weed-infested control.
The highest values for trunk cross-sectional area and crown volume were reported in the variant treated with the higher rate of flumioxazin – Pledge 50 WP – 400 g ha‑1.
Publication
Authors
Z. Rankova, T. Moskova, N. Neshev, M. Yanev, G. Dimitrov
Keywords
weeds, herbicides, growth manifestations, trunk cross-sectional area, tree height
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