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367202

RESPONSE OF YIELD AND HEAD QUALITY OF LETTUCE TO NITROGEN FERTILIZATION AND SEAWEED EXTRACT FOLIAR APPLICATION UNDER NEW VALLEY CONDITIONS

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Plant Production Science

Abstract

Two field experiments were conducted at the Agricultural Research Farm of the Faculty of Agriculture, New Valley University, New Valley Governorate, Egypt, during the two successful seasons of 2022/2023 and 2023/2024 to study the effect of nitrogen fertilization at rates of 45, 60, 75, and 90 kg N/feddan in the form of urea and foliar spraying with seaweed extract (SWE) at concentrations of 2, 4, and 6 ml/l beside untreated control and their interactions between them on growth, productivity, nitrogen use efficiency (NUE), and head quality of lettuce cv. Dark Green, grown in sandy soil. The results clearly demonstrated that the interaction between fertilizing lettuce plants with 90 kg N/fed. and foliar spraying with SWE at 6 ml/l significantly enhanced plant growth parameters, leaf pigments, i.e., chlorophyll a, b, and carotenoides, head traits such as head diameter, head fresh weight, dry matter percentage in leaves, and the total yield (ton/fed.), leaves content of N, P, and K, total soluble solids, and vitamin C in both seasons. Moreover, this interaction treatment scored relative increases about 65.84% acreage of the two seasons over the interaction between fertilizing plants with 45 kg N/fed. and foliar spraying with distilled water (control plants). As for NUE and nitrate concentration in lettuce plants, fertilizing plants with 45 kg N/fed. and foliar spraying with SWE at 6 ml/l record the maximum NUE (average two seasons, 286.35 kg yield/one kg N) and the minimum nitrate concentration in leaves (average two seasons, 174.00 ppm). Despite the use of a high rate of nitrogen fertilization (90 kg/fed.) and spraying lettuce plants with SWE at 6 ml/l, which recorded the maximum yield per feddan, the percentage of nitrate (295.15 average two seasons) that was estimated in the leaves did not reach the maximum permissible limit of nitrates (2 g/kg DW).

DOI

10.21608/zjar.2024.367202

Keywords

lettuce, Nitrogen rates, seaweed extract and sandy soil

Authors

First Name

Mohamed

Last Name

Ali

MiddleName

A.M.

Affiliation

Hort. Dept., Fac. Agric., New Valley Univ., El-Kharga 722511, Egypt

Email

mohamed.ali@agr.nvu.edu.eg

City

-

Orcid

-

Volume

51

Article Issue

3

Related Issue

49174

Issue Date

2024-05-01

Receive Date

2024-07-15

Publish Date

2024-05-01

Page Start

461

Page End

478

Print ISSN

1110-0338

Online ISSN

3009-7193

Link

https://zjar.journals.ekb.eg/article_367202.html

Detail API

https://zjar.journals.ekb.eg/service?article_code=367202

Order

367,202

Type

Original Article

Type Code

842

Publication Type

Journal

Publication Title

Zagazig Journal of Agricultural Research

Publication Link

https://zjar.journals.ekb.eg/

MainTitle

RESPONSE OF YIELD AND HEAD QUALITY OF LETTUCE TO NITROGEN FERTILIZATION AND SEAWEED EXTRACT FOLIAR APPLICATION UNDER NEW VALLEY CONDITIONS

Details

Type

Article

Created At

24 Dec 2024