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Tag: Citrus

28 Aug 2019
Cover crops
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Cover crops for citrus

Sarah Strauss, Davie Kadyampakeni, Ramdas Kanissery, Tara Wade, Lauren Diepenbrock and Juanita Popenoe
Citrus Industry

Cover crops are specific crops not intended for sale but for soil improvement and sustainability. They are increasingly common in the agricultural fields of the Midwest and other grain-producing regions because of the wide range of benefits not just for the soil, but also the cash crop. In those systems, cover crops improve water and nutrient retention, promote microbial activity, reduce weed growth and insect pests, and improve plant growth. Similar impacts have been found in tree crops like apples and peaches, where cover crops are planted in row middles.

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31 Jul 2019
Citrus Improvement
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Quality and Quantity Improvement of Citrus: Role of Plant Growth Regulators

Harsimrat K. Bons, H.S. Rattanpal
Department of Fruit Science, Punjab Agricultural University, Ludhiana, Punjab, India.
Nirmaljit Kaur
Department of Botany, Punjab Agricultural University, Ludhiana, India.

Citrus is one of the most important fruit tree species in the world, as the fruits are a valuable source of nutrients, vitamins and other antioxidant compounds. The citrus productivity depends on various factors, among these the plant growth regulators holds a prime position. The use of plant growth regulators has become an important component in the field of citriculture because of the wide range of potential roles they play in increasing the productivity of crop per unit area. The plant growth regulating compounds actively regulate the growth and development by regulation of the endogenous processes and there exogenous applications have been exploited for modifying the growth response.

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30 Apr 2019
Aluminum toxicity
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Aluminum Toxicity and Tolerance in Plants

Emmanuel Delhaize and Peter R. Ryan
Division of Plant Industry, Commonwealth Scientific and Industrial Research Organization, Australia

The most easily recognized symptom of Al toxicity is the inhibition of root growth, and this has become a widely accepted measure of A1 stress in plants. In simple nutrient solutions micromolar concentrations of Al can begin to inhibit root growth within 60 min. However, the inhibition of growth per se offers little information about the causes of stress that will either precede or coincide with changes in growth. To understand the mechanisms of Al toxicity, it is essential to identify the primary sites involved, both anatomical and metabolic, being mindful that A1 could have diverse effects and act differently in different species.

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30 Apr 2019
Aluminum toxicity
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How do Citrus Crops Cope with Aluminum Toxicity

KKIU Arunakumara
Department of Crop Science, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka
Buddhi Charana Walpola1,  Min-Ho Yoon
Department of Bio-Environmental Chemistry, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, 305-764, Korea

World Agriculture faces daunting challenges in feeding the growing population today. Reduction in arable land extent due to numerous reasons threatens achievement of food and nutritional security. Under this back ground, agricultural use of acidic soils, which account for approximately 40 % of the world arable lands is of utmost important. However, due to aluminum (Al) toxicity and low available phosphorous (P) content, crop production in cidic soils is restricted. Citrus, in this context, gains worldwide recognition as a crop adapted to harsh environments. The present paper reviewed Al toxicity and possible toxicity alleviation tactics in citrus.

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30 Apr 2019
Aluminium in Acid Soils
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Aluminium in Acid Soils

Dragana Krstic, Dragoslav Nikezic
University of Kragujevac, Faculty of Science
Ivica Djalovic
Institute of Field and Vegetable Crops
Dragana Bjelic
University of Kragujevac, Faculty of Agronomy
Serbia

Soil acidity is a limiting factor affecting the growth and yield of many crops all over the world. The basic problems concerning chemical properties of more acid soils are, besides acidity itself, the presence of toxic compounds and elements, such as soluble forms of Al, Fe and Mn, nitrites and various toxic organic acids. Aluminium (Al) toxicity is one of the major constraints on crop productivity on acid soils, which occur on up to 40% of the arable lands of the world.

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31 Mar 2019
Citrus Juice
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Modulation in yield and juice quality characteristics of citrus fruit from trees supplied with zinc and potassium foliarly

M. Yasin Ashraf, F. Hussain, J. Akhter
Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, Faisalabad, Pakistan
M. Ashraf
Department of Botany, University of Agriculture, Faisalabad, Pakistan
Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
G. Ebert
Agricultural Advisory Department, K+S KALI GmbH, Kassel, Germany

Citrus is the largest fruit crop grown in Pakistan and Kinnow is the major planted species. About 94% of the total citrus is produced in the Punjab province (Sharif et al., 2005). Macro- and micro-nutrient deficiencies have been reported in citrus orchards of Punjab (Rashid et al., 1994). These deficiencies are usually recognized by distinctive symptoms that appear on the leaves and sometimes on fruits, branches or general growth of the tree (Ibrahim et al., 2007).

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23 Nov 2018
Non-compliance regarding FCM
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South Africa under pressure to get it right on FCM and CBS

Carolize Jansen
https://www.freshplaza.com

DAFF proposes new recommendations to deal with loopholes and non-compliance regarding FCM

On 24 October, officials from the National Plant Protection Organisation of South Africa (NPPOZA) of the Department of Agriculture, Forestry and Fisheries and the Citrus Growers’ Association gave growers, packhouses, forwarding agents, exporters and traders, an overview of the past season during the annual citrus coordinating meeting. It kicked off with an overview of the season in the European Union.READ MORE

27 Feb 2018
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Okuleerhout aanvraag en aanbod: Tekort aan sekere kultivars.

Paul Fourie
Citrus Research International, Sitrusverbeteringskema, Uitenhage
Jacolene Meyer
Citrus Research International, Sitrusverbeteringskema, Uitenhage
Michelle le Roux
Citrus Research International, Sitrusverbeteringskema, Uitenhage
Thys du Toit
Citrus Research International, Sitrusverbeteringskema, Uitenhage
Scott McKenzie
Suid-Afrikaanse Sitrus Kwekersvereniging

Die suidelike Afrika sitrus-industrie het in onlangse jare ongekende groei ondervind. Dit is duidelik uit die groei in kwekery kapasiteit en aantal bome wat jaarliks gemaak word. Vier jaar gelede is 3.2 miljoen bome in 25 kwekerye gemaak.

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