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344254

GROWTH, PHENOLGY AND YIELD OF SUNFLOWER AS AFFECTED BY IRRIGATION INTERVAL AND POTASSIUM FERTILIZER LEVEL

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Last updated: 28 Dec 2024

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Abstract

Two field experiments were conducted in 2016 and 2017 summer seasons at Agric. Exp.  Res. Sta., Fac. Agric., Cairo Univ. to study the effect of irrigation intervals (I1: irrigation every 9 days, I2: every 18 days and I3: every 27 days) and three potassium fertilizer level, i.e.  K0: control (zero K2O) , K1: 50 kg K2O and K2: 75 kg K2O feddan-1 on growth, phenology and yield and its components of sunflower. Results of combined data across two seasons showed that significant differences between irrigation intervals were detected in growth, phenology, yield, yield components, seed oil content and oil yield feddan-1. Irrigation every 18 days produced the maximum values of plant height (183.0cm), number of leaves plant-1(19.4), leaf area plant-1 (1626 cm), leaf area index (1.81), head diameter (18.0 cm) head weight (359 g),seed yield plant-1(186 g) ,shelling percentage (51.9%), 1000-seed weight (72.5 g), seed yield feddan-1(1228 kg), stover yield feddan-1(4173 kg), biological yield feddan-1 (5407 kg), harvest index (22.7%), seed oil content (32.7%) and oil yield feddan-1 (398 kg). However, irrigation every 27 days gave the lowest values of all above mentioned traits. Increasing irrigation intervals from 9 to 27 days significantly decreased days to flowering and physiological maturity. Increasing potassium fertilizer from 50 kg K2O to 75 kg K2O feddan-1 led to increase of growth, yield and its components and also seed oil content. Interaction effect between irrigation intervals and potassium fertilizer level had a significant effect on all studied traits. It could concluded that irrigation every 18 days with 50 kg K2O feddan-1resulted in the greatest values for the growth, yield, seed oil content and oil yield feddan-1 of sunflower.

DOI

10.12816/ejpb.2019.344254

Keywords

Sunflower, irrigation interval, Potassium Fertilizer, Phenology, yield, Oil and protein

Volume

23

Article Issue

4

Related Issue

46432

Issue Date

2019-04-01

Receive Date

2024-03-03

Publish Date

2019-04-01

Page Start

531

Page End

546

Print ISSN

1110-7863

Online ISSN

2735-3885

Link

https://ejpb.journals.ekb.eg/article_344254.html

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https://ejpb.journals.ekb.eg/service?article_code=344254

Order

344,254

Type

Original research

Type Code

1,909

Publication Type

Journal

Publication Title

Egyptian Journal of Plant Breeding

Publication Link

https://ejpb.journals.ekb.eg/

MainTitle

GROWTH, PHENOLGY AND YIELD OF SUNFLOWER AS AFFECTED BY IRRIGATION INTERVAL AND POTASSIUM FERTILIZER LEVEL

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Type

Article

Created At

28 Dec 2024