Citrus

Rehabilitation activities of Pontianak Tangerine in Sambas Regency

Rehabilitation activities of Pontianak Tangerine in Sambas Regency

Citrus, News
The mission to restore the fame of tangerine Pontianak in Sambas regency, West Kalimantan has been started since 2016 with a series of research activities. One of the activities focused on creating a new demonstration plot in Tebas in the village of Matanglabong and Pusaka by planting as many as 2000 of citrus disease-free seeds. In order to accomplish the mission, farmers are expected to know and understand the role of disease-free seeds in the field and how to properly manage the plants. To achieve that, ICSFRI assisted and escorted the planting activities by presenting the Integrated Management of Healthy Citrus Orchard (IMHCO) properly. Assistance began with the IMHCO training for selected farmers and field workers in ICSFRI. The activity then continued with the new plant...
Fruit fly’s Attack on Citrus Fruit

Fruit fly’s Attack on Citrus Fruit

Articles, Citrus, Citrus Desease and Pest
Fruit fly (Bactrocera spp) is one of important pests in citrus. The damage caused by its larvae trigger early fruit abscission. This causes loss of yield and decrease in fruit quality. The attacked fruits could be identified easily due to change in fruit skin color around the part where the fly pricks which decaying fast. Within the area, there could be found a small hole. This is due to the larvae that live inside the fruits that make the fruit decays. If it is cut, the larvae will be seen and jump around when touched. In citrus, fruit flies attack pummelo (Citrus grandis) more and less on sweet orange (C. sinensis) and other type of citrus. Fruit flies cause 30-60% loss on pummelo which sometimes the attack also combined with fruit borer (Citripestis segittiferella) then makes the...
Efforts to save Kisar Orange from Extinction

Efforts to save Kisar Orange from Extinction

Articles, Citrus
  Lemon Kisar (local name) is a main fruit commodity in Kisar Island, nationally recognized as a superior citrus variety based on the Decree of the Minister of Agriculture Number: 864 / Kpts / TP.240 / 11/1998 on the Release of National Superior Citrus Varieties with the name of ‘Jeruk Manis Kisar’ (Kisar Orange). This orange is a local Indonesian fruit crop originally found in Southwest Maluku Regency and has been cultivated for generations. However, the current development of Kisar sweet orange is quite apprehensive, considering that the population is decreasing every year. Statistically, in 2013 there were about 45,000 plants of Kisar Orange, but until the end of 2016 the remaining plants were approximately 5000 plants. If not handled quickly and seriously, it is estimate
The exotic fruit from Kisar Island: Kisar Orange

The exotic fruit from Kisar Island: Kisar Orange

Citrus, News
Kisar Island is one of the many unfamiliar islands for most people. Kisar is a part of the territory of the district of Southwest Maluku, Maluku province and includes the foremost islands bordering the state of East Timor and Australia. The island has a variety of potential natural resources that can be developed for tourism with its natural beauty and beaches and for agriculture and livestock. One of the typical agricultural products of this island is Kisar orange. The exotic orange has become the pride of the community that makes it not yet complete when visiting Kisar without tasting the orange fruit and bring it as a souvenir. The orange has been grown for generations by the community and then become a flagship product for the Kisar Island. The orange crop could grow there despite t...
Flowering Induction on Mandarin

Flowering Induction on Mandarin

Articles, Citrus, Citrus Cultivation, Slides
“Keprokisasi”, meaning to plant more mandarin varieties, is one of the programs launched by the government to develop more mandarin varieties due to its high economy value and its potential to compete and substitute the imported citrus fruits. However, there are several obstacles in mandarin development, notably its long juvenile period that is longer than that of tangerines, about 4 year after planting. This is the main reason of farmers favor for tangerines which could bear fruits just after 2,5 year after planting. One of the ways to cut short the juvenile period on mandarin is by using ‘branch bending’. With this method, farmers do not need to worry about the juvenile period since the mandarin varieties could bear fruits at relatively similar age with the tangerines and with high yi
Developing Mandarin cv Terigas at High Land

Developing Mandarin cv Terigas at High Land

Citrus, Citrus Cultivation, News
Mandarin cv Terigas has good quality of taste which similar to the taste of honey. This variety is originally adapted in low land as in its center of development, Sambas West Borneo. The taste attracts consumers which in turn opens an opportunity for further development. Though originated from low land area, Terigas could also bear potential to be developed in high land. One of the experiments to investigate this potential development has been done by IAARD in Kliran Experimental Field, Batu East Java. The plants were planted in late 2012. They are now in fruit production phase and will soon followed by harvest time. The plants shows good growth and bears quite heavy fruits which may reflects the application of innovation technology from IAARD. This also means that Terigas could ...
Control of Diplodia Gummosis in Citrus

Control of Diplodia Gummosis in Citrus

Articles, Citrus, Citrus Desease and Pest
Diplodia gummosis is one of the major diseases in citrus. Diplodia gummosis disease can occur if there is a pathogen that attacks Botryodiplodia theobromae Pat. and then attack vulnerable plants which grow in a suitable environment for pathogens and with less maintenance. Diplodia gummosis disease attack rate can be used as a standard of the level of maintenance that has been done; more intensive maintenance can reduce the level of disease. Environmental conditions that facilitate the attack of pathogens including drought, wounding, high difference in day and night temperatures, and less optimum maintenance. This disease is known as diplodia gummosis because one of the symptoms is gumming on the affected stem. Diplodia gummosis disease can be seen easily when plants are alrea...
Pamindo Agrihorti, New Pummelo Seedless Variety

Pamindo Agrihorti, New Pummelo Seedless Variety

Citrus, Germplasm, News, Specials
Earlier this year, Ministry of Agriculture released new varieties of pummel citrus, ‘Pamindo Agrihorti’. It was officially released based on document of the Minister of Agriculture No. 017 / Kpts / SR.120 / D.2.7 / 2/2016 dated on February 18, 2016. Pummelos generally have a lot of seeds which can reach more than 100 seeds / fruit. Seedy fruits are sometimes bothersome since the seeds need to be omitted before the fruit can be consumed. Thus, seedless character for fresh fruit of citrus is one of important elements. Breeding Department of ICSFRI has conducted a program for the improvement of the character by mutation breeding using gamma rays. The selected variety resulted from the program is ‘Pamindo Agrihorti’. At first glance it looks just similar to other pummelo fruits. But

SOIL AND ITS IMPORTANCE FOR CITRUS

Articles, Citrus, Citrus Cultivation
Soil in everyday life means land areas on which variety of works such as agriculture, housing, and so on can be established. While for agriculture, soil has a special meaning, which is a natural medium for plants’ growth. Soil is the result of evolution, has a unique and organized arrangement and consists of layers or horizons that develop genetically. Vertical cross section of the soil shows the structure of the soil horizon called the soil profile. Constituent of the soil profile from top to bottom respectively are O, A, B and C horizons; and so called solum is A and B horizons (Fig beside). O horizon is an organic horizon formed on the top layer of mineral soil, found mainly in forests soil that has not been disturbed. A horizon is the surface soil horizon which consists of a mix
Pacitan Sweet Orange

Pacitan Sweet Orange

Articles, Citrus, Citrus Cultivation
Pacitan sweet orange (Citrus Sinensis) is one of the most popular sweet orange in Indonesia. Within the group, ‘Pacitan’ has the sweetest taste. It has sweet taste even before ripe, so that it often given to a baby and earned the nickname sweet orange "baby" Compared with tangerine, sweet orange has some advantages, which are: it has wider environmental adaptation, grows faster, has higher production, easy to maintain, and suitable for land conservation because of the wider and dense canopy. Farming system of ‘Pacitan’ will achieve maximum profit in the long term if the development and cultivation are done properly starting from the site selection, the provision of quality seeds, crop maintenance and harvesting. Site selection ‘Pacitan’ has a wide environmental adaptability so that i