Effect of Foliar Spray With Seaweeds Extract and Chitozan on Earliness and Productivity of Globe Artichoke.

Abstract

Two field experiments were carried out during the two successive seasons of 2012/2013 and 2013/2014 at the Horticulture Research Farm of El-Bramoon, El-Dakahlia Governorate,, to investigate the response of globe artichoke plants cv. French, to foliar spray with seaweeds extract, chitozan levels and their combination on growth, earliness, quality, and productivity. The main results can be summarized as follows: 1). The results indicated that increasing seaweeds extract and chitozan levels individual or in combination were accompanied with significant increases in vegetative growth characters (plant height, number and dry weight of leaves/ plant) and yield distribution (early, medium and late yields) compared with control. 2). Application of seaweeds extract, chitozan levels and their combination improved most head quality characteristics (head weight, diameter, receptacle fresh and dry weight as well as TSS). However, there were no significant differences in terms of head length in the two seasons. 3) Dry receptacle N, P, K, protein and total sugars contents were positively and significantly responded to application of seaweeds extract, chitozan levels and their combination in the two seasons, while inulin was affected in the second season only. The combination between chitozan 2ml/Land seaweeds 2g/L as foliar application, seemed to be the most effective treatment, which gave a balanced vegetative growth, a higher early and total yield as well as a good quality. Moreover, this particular treatment combination was more beneficial compared to all other treatments.

Early and Total Yield Enhancement of the Globe Artichoke Using an Ecofriendly Seaweed Extract-Based Biostimulant and PK Fertilizer

“…The chemical and biochemical constituents of any seaweed extract act as biostimulants that work synergistically [55,56]. There was a good agreement with the results of previous studies that indicated the beneficial effects of diluted seaweed extracts on plants such as artichoke [15,42]. However, the study carried out by Canellas et al [57] concluded that humic acid was ineffective in improving vegetable crop nutrient uptake.…”

Growth, Yield and Quality of Two Globe Artichoke Cultivars as Affected by Gibberellic Acid, Naphthalene Acetic Acid, Benzyle Amino Purine and Seaweed Extract

“…The positive effects of seaweed extract in yield parameters could be due to the fact that it contains macro, micronutrients and amino acids that improve nutritional status, vegetative growth and yield. These results are in harmony with Saif-Eldeen et al (2014) who showed that the increasing seaweeds extract levels were accompanied with significant yield distribution (early, medium and late yields) compared with control. Also, Seaweed extract application for different crops has a great importance due to its content of organic matter, micro elements (Fe, Cu, Zn, Co, Mo, Mn and Ni), vitamins and amino acids.…”

“…The positive effect of seaweeds extract on early yield characters was reported by Saif-Eldeen et al (2014) who showed that the high level of seaweeds extract were accompanied with significant yield distribution (early, medium and late yields) compared with control.…”

Effect of pre-harvest chitosan foliar application on growth, yield and chemical composition of Washington navel orange trees grown in two different regions

“…Saif Eldeen et al (2014) illustrated that receptacle contents of N, P, total sugars % and protein % of globe artichoke were greatly affected by chitosan treatments as compared to the control. Farouk and Abd El Mohsen (2011) showed that pronounce and highly significant increase in nitrogen, phosphorous and potassium percentages in the shoot due to exogenous application of chitosan (250 mg/l).…”