Effect of organic and inorganic fertilizers on growth, yield, quality, and nutrients content of broccoli (brassica oleracea var. italica)‎

Other Title(s)

دراسة تأثير الأسمدة العضوية و المعدنية على النمو، الإنتاجية، النوعية و المحتوى من العناصر الغذائية للبروكلي

Dissertant

Awdah, Basil Ahmad

Thesis advisor

al-Mahadin, Atif Yasin

University

Mutah University

Faculty

Faculty of Agriculture

Department

Plant Production Department

University Country

Jordan

Degree

Master

Degree Date

2007

English Abstract

Two experiments were carried out during winter season (2006-2007), at Mu'tah University, Agricultural Research Station, Rabba at the south of Jordan; to investigate the effects of organic manure and inorganic fertilizer on growth, yield, quality and nutrients content of broccoli {Brassica oleracea L.

var.

Italica), under plastic house and open field conditions.

Four organic fertilizer levels (0, 40, 60 and 80 ton/ha) and three inorganic fertilizer levels (0, 30 and 60 kg/ha) were used.

Experimental treatments were arranged as factorial in completely randomized block design with 3 replications for each treatment.

Application of organic manure or chemical fertilizers increased yield of broccoli under both conditions.

Application of 60 kg/ha of chemical fertilizers with 60 ton/ha of organic manure under plastic house conditions, and 80 ton/ha under open field conditions produced the highest broccoli yield.

However, the yield under plastic house conditions was decreased due to adding high rate of organic manure (80 ton/ha).

Heads number per plant, chlorophyll content and heads diameter were increased in response to organic manure and chemical fertilizers application.

Fresh and dry weights were significantly increased by application of different manure and chemical fertilizer levels under open field conditions, but not under plastic house conditions which was not significantly affected.

Vegetative growth parameters (plant length, leaves and shoots number), under plastic house conditions were slightly increased by different manure and chemical fertilizer levels combinations, at two weeks and one month after chemical fertilizers applications.

Under open field conditions, vegetative growth of broccoli plants was significantly increased by application of organic manure and chemical fertilizers at both dates.

However, due to low temperatures under open field conditions, which were below normal for an extended period following transplanting, plant growth was depressed and delayed the head formation.

Under both conditions, macro-( N, P and K) and micro- nutrients (Fe, Mn and Zn) uptake by broccoli leaves, were significantly increased compared to control by application of either organic manure or chemical fertilizer; except P uptake under plastic house which was not significantly affect.

Organic manure application significantly increased N, P and K concentrations in soil under both conditions whereas; only soil K content under plastic house conditions and soil N content under open field conditions were not significantly increased compared to control by application of chemical fertilizer.

Only soil Fe, Mn and Zn contents under open field conditions were significantly increased by each increase in organic manure levels.

Soil pH, EC and organic matter content were not significantly differ by application of chemical fertilizers levels under both conditions.

However, soil EC and organic matter content in both conditions increased by increasing organic manure levels, but not pH, which was found to be not affected by organic manure or chemical fertilizers level.

From the result of present study we can conclude that growing broccoli during December under plastic house conditions produced higher yields than in open field conditions; however, planting broccoli in open field must be earlier.

The best combination for higher yield and best quality were 60 ton/ha of organic manure and 60 kg/ha of chemical fertilizer.

Main Subjects

Botany

Topics

• Fertilizers
• Organic fertilizers

No. of Pages

85

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-293310