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Effect of Leaf Retention and Watering on the Success and Subsequent Growth of Litchi Layer

B. C. Sarker
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

M. A. Rahman
Fruit Research Station, Bangladesh Agricultural Research Institute, Binodpur, Rajshahi, Bangladesh

A. K. M. Quamruzzaman
Horticultural Research Center, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

The effect of four levels of leaf retention and four frequencies of watering on the survival of litchi layers was studied at the Fruit Farm of Horticulture Research Centre, BARI, Gazipur, during June 2001 to April 2002. The highest rate of survival (63%) was found in the layers in which 50 % of the leaves were retained. These layers also had the longest shoots and the highest dry weight of shoots per cutting. Watering on alternate days produced the highest success (56%) and the surviving layers had the maximum fresh and dry weight of shoots. Dry weight of roots was also the maximum in the same treatment. The highest of 81% survival was recorded in the treatment combination of retaining 50% leaves and watering on alternate days.

Keywords: Growth regulator, Litchi layers, Foliar fertilizer, Dekamon, Agrister gold, Agrister jade

Location: Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur

Start Date: 00-06-2001

End Date: 00-04-2002

Program Area: Crop-Soil-Water Management

Commodity: Flood, Litchi

Objectives:

To study the effect of leaf retention and watering in improving the success and subsequent growth of litchi layers.

Methodology:

The study was carried out at the fruit farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur during October 2001 to April 2002. The experiment was laid out in a randomized complete block design. The treatments were replicated thrice. The treatments included four levels of leaf retention: i) all leaves retained; ii) 50% of leaves retained; iii) all leaves removed; and iv) 50% of each leaf retained. Four Frequencies of watering were: i) watering everyday; ii) watering on alternate days; iii) watering at two days interval; and iv) watering at three days interval. Each time watering brought the soil to field capacity. Polyethylene bags of 20 cm diameter were used for potting the layers. A thoroughly mixed soil mixture with 50% soil and 50% burned rice husk was used as growing media. Rings of 2-3 cm length were made by removing the bark on twigs. The wrapping was done with moist soil mixture (50% soil: 50% cowdung ) which was covered with polythene sheets of 15 cm x 10 cm size. Both ends of the wrap were tied tightly to minimize the evaporation of moisture. All litchi layers were detached from the mother tree on the same day. Layers of inform size were used for the experiment, fifty in each treatment. Intercultural operations were done as and when necessary. Five randomly selected layers per treatment were uprooted 180 days after planting and the data on various growth parameters were recorded. The dry weight of shoot and root per layer was taken after drying in an oven at 65? for 48 hours to reach the constant weight. Data on survival (%), number of leaves, shoot and root, total length of shoot, length of longest root, fresh and dry weight of shoot and root were recorded. The treatment means were separated by Duncan's Multiple Range Test.

Source of Information: The Agriculturists 2(1): 96-103 (2004) A Scientific Journal of Krishi Foundation ISSN 1729-5211

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Litchi layer retaining 50% leaves and watered on alternate days produced the highest survival (81%) as well as the dry weight of shoot. Hence, this technology may be recommended for large scale multiplication of litchi.

Knowledge Management: Journal