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Fruit retention, yield and postharvest fruit quality of mango in relation to [electronic resource]: II. time and number of potassium nitrate, zinc and boron foliar sprays.

By:

Kassem, H. A

Contributor(s):

Marzouk, H. A

Language: English Summary language: Arabic Description: P.299-312Other title:

بقاء الثمار و المحصول و صفات جودة ثمار المانجو و علاقتها ب:‪‪‪‪‪ 2-الرش الورقي بعدد و مواعيد رش مختلفة بنترات البوتاسيوم و الزنك و البورون.‪‪‪‪‪ [Added title page title]

Uniform titles:

Journal of the advances in agricultural researches, 2004 v. 9 (2) [electronic resource].

Subject(s):

Online resources:

Full Text Article

In: Journal of the Advances in Agricultural Researches 2004.v.9(2)Summary: The present investigation was conducted during 2002 and 2003 growing seasons in order to evaluate the effect of three application times (before bloom, at bloom and at pea stage) and number (1, 2 or 3) of potassium nitrate, zinc and boron sprays on Hindi-Be-Senara mango trees. Shoot length and chlorophyll content were increased by Zn and KN03 sprays. Spraying KN03 1, 2 or 3 times significantly increased leaf N, K, Ca and B contents. Spraying Zn increased leaf K, Ca, Mg and Zn contents while B sprays increased leaf K, Ca, Mg and 8 leaf contents. However, Zn and 8 sprays decreased leaf P content whereas, leaf Fe content was decreased by Zn sprays only. In general two or three sprays of Zn or 8 increased fruit set, fruit retention and yield and decreased fruit drop percent. However, two and three sprays did not differ significantly. Fruit retention, drop, weight, length, diameter, yield and V.C contents were affected by KN03 treatments. However, acidity was not affected by any treatment.

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The present investigation was conducted during 2002 and 2003 growing seasons in order to evaluate the effect of three application times (before bloom, at bloom and at pea stage) and number (1, 2 or 3) of potassium nitrate, zinc and boron sprays on Hindi-Be-Senara mango trees. Shoot length and chlorophyll content were increased by Zn and KN03 sprays. Spraying KN03 1, 2 or 3 times significantly increased leaf N, K, Ca and B contents. Spraying Zn increased leaf K, Ca, Mg and Zn contents while B sprays increased leaf K, Ca, Mg and 8 leaf contents. However, Zn and 8 sprays decreased leaf P content whereas, leaf Fe content was decreased by Zn sprays only. In general two or three sprays of Zn or 8 increased fruit set, fruit retention and yield and decreased fruit drop percent. However, two and three sprays did not differ significantly. Fruit retention, drop, weight, length, diameter, yield and V.C contents were affected by KN03 treatments. However, acidity was not affected by any treatment.

Summary in Arabic.

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