Enhancing cropping of Navel orange by different agrochemicals foliar sprays
Year: 2011
Type: article
Abstract: The present investigation was carried out during the two successive growing seasonsof 2003 and 2004 on Washington Navel orange trees grown at El-Tarh region, El-BeheraGovernorate of Egypt. In order to study the effect of spraying the trees with differentagrochemicals on vegetative growth, fruit drop, fruit retention and yield. Trees were divided intotwo groups , the first group was subjected to the foliage treatments when the fruit reached pea size(5 mm in diameter) and the second group at marble size (15 mm in diameter). Foliar sprays ofurea or 2, 4-D alone at pea or marble stage significantly increased vegetative growth. In general,foliar sprays of 2, 4-D alone or with the different calcium compounds at pea or marble stagesignificantly increased fruit retention and decreased fruit drop after June drop. Final fruit retentionwas increased (23 - 69% over the control) and pre-harvest fruit drop was decreased (63 to 100%compared to the control) by spraying boric acid or 2, 4-D alone at the pea stage in both seasons.Spraying calcium superphosphate alone at the marble stage caused an increase in final fruitretention by 33 - 7% and a decrease in pre-harvest fruit drop by 61 -72% over the control in bothseasons.
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W1967138224