Integrated effects of herbicides and foliar fertilizer on corn inbred line
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Plant response to herbicides is one of the most essential points in corn (Zea mays L.) production, especially in inbred
lines. Weed abundance is higher in corn lines comparing to hybrids. Insufficient herbicide selectivity in lines crop can be
a limiting factor for their application. Weed control today is based on Integrated Weed Management (IWM) approach, i.e.
to use all possible methods and measures for weed control and better crop fitness. In this research, sensitivity of one corn
inbred line (selection based on previous research) was tested to two sulfonylurea herbicides in treatments with and without
foliar fertilizer. Treatments included recommended and double field doses and control (no herbicide), with and without
foliar fertilizer. Herbicides and foliar fertilizer were applied as a mixture. In a 3 yr field experiment, herbicides expressed
different selectivity to the tested line. The line was further tested in controlled conditions for dose-response analyses in order
t...o determine variations in biomass and biochemical compounds levels. The double dose of foramsulfuron affected fresh
matter significantly (p < 0.05) with 90% decrease, compared to control. An experiment in controlled conditions showed
increased tolerance to herbicides in treatments with foliar fertilizer – according to higher effective doses (ED10, ED50,
and ED90) estimated, indicating higher plant tolerance to herbicides when foliar fertilizer was applied. In corn leaves the
highest herbicide dose and foliar fertilizer induced slight reduction of concentrations of free thiol groups, soluble proteins
and phytic P (to 14.1%, 9.3% and 9.9%, respectively) and increased phenolics concentration (up to 26.7%) compared to
treatment without herbicide application. Obtained results indicate positive effects of foliar fertilizer when it is applied in
mixture with herbicides, and foliar fertilizing should be considered as important strategy in obtaining higher yields.
Кључне речи:
dose response / fertilizing / sulfonylurea / Zea maysИзвор:
Chilean Journal of agricultural research, 2019, 80, 1, 50-60Издавач:
- Chillan : Instituto de Investigaciones Agropecuarias (INIA), Ministerio de agricultura
Финансирање / пројекти:
- Интегрални системи гајења ратарских усева: очување биодиверзитета и плодности земљишта (RS-MESTD-Technological Development (TD or TR)-31037)