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Improving "le-conte" pear trees productivity by foliar application with plant bioregulators and boric acid [electronic resource].

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Aly M. A

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Language: English Summary language: Arabic Description: p.622-643Other title:

تحسين إنتاجية أشجار الكمثري ليكونت بالرش الورقي لمنظمات النمو وحمض البوريك [Added title page title]

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Journal of the advances in agricultural researches, 2012 v. 17 (3) [electronic resource].

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In: Journal of the Advances in Agricultural Researches 2012.v.17(3)Summary: This investigation was conducted during 2010 and 2011 growing seasons on "Leconte" pear trees. The trees were 10 years old budded on Pyrus communis rootstock and grown on sandy loam soil in a private orchard located at Burg El-Arab, Alexandria Governorate. The experiment involved the following treatments: 1) Control (Spraying with tap water); 2) 15 ppm GA³ (Gibberellic Acid); 3) 30 ppm GA³; 4) 45 ppm GA³; 5) 50 ppm BA (Boric Acid); 6) 100 ppm BA; 7) 150 ppm BA; 8) 10 CPPU(Sitofex); 9) 15 CPPU and 10) 20 CPPU. All applications were applied twice, at full bloom (80-100% flowering) and after four weeks from setting. Results revealed that 45 ppm GA³ as well as 20 ppm Silofex (CPPU) treatments gave the highest values of shoot length, shoot thickness, leaf area and total leaf chlorophyll content compared to all treatments during both experimental studied On the contrary, the control treatment has the lowest values during seasons.

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This investigation was conducted during 2010 and 2011 growing seasons on "Leconte" pear trees. The trees were 10 years old budded on Pyrus communis rootstock and grown on sandy loam soil in a private orchard located at Burg El-Arab, Alexandria Governorate. The experiment involved the following treatments: 1) Control (Spraying with tap water); 2) 15 ppm GA³ (Gibberellic Acid); 3) 30 ppm GA³; 4) 45 ppm GA³; 5) 50 ppm BA (Boric Acid); 6) 100 ppm BA; 7) 150 ppm BA; 8) 10 CPPU(Sitofex); 9) 15 CPPU and 10) 20 CPPU. All applications were applied twice, at full bloom (80-100% flowering) and after four weeks from setting. Results revealed that 45 ppm GA³ as well as 20 ppm Silofex (CPPU) treatments gave the highest values of shoot length, shoot thickness, leaf area and total leaf chlorophyll content compared to all treatments during both experimental studied On the contrary, the control treatment has the lowest values during seasons.

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