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Nitrogen and Zinc on Growth and Nutrient Concentrations in Leaf of Pummelo cv. Kao - thongdee (Citrus maxima (Burm.) Merr |
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| รหัสดีโอไอ | |
| Creator | 1. Boonchana Wongchana 2. Montree Issarakraisila 3. Somsak Maneepong |
| Title | Nitrogen and Zinc on Growth and Nutrient Concentrations in Leaf of Pummelo cv. Kao - thongdee (Citrus maxima (Burm.) Merr |
| Publisher | Department of Agriculture |
| Publication Year | 2554 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 29 |
| Journal No. | 3 |
| Page no. | 248-261 |
| Keyword | ส้มโอ, ไนโตรเจน, สังกะสี, การเจริญเติบโต |
| URL Website | http://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | Pummelo (Citrus maxima) cultivar Kao-thongdee is an important fruit crop growing in Pak Panang river basin in southern part of Thailand. Deficiencies of nitrogen and zinc were reported as a main problem of soil fertility in this pummelo growing area. Growth characteristics of air-layering seedlings of pummelo cultivar Kao-thongdee in pots containing both nitrogen and zinc deficient soils were studied at Centre for Scientific and Technological Equipments of Walailak Univesrity, Thasala district, Nakhon Si Thammarat province during May 2008 to October 2009. The experiment was set up in completely randomized design consisted of 6 replications and 4 treatments namely control, calcium nitrate, zinc sulphate and calcium combine zinc sulphate. The objectives were to investigate growth and nutrient concentrations in leaf of pummelo. The results showed that the calcium nitrate and calcium combing zinc sulphate treated plants had chlorophyll concentrations in plant leaves at 43.6 and 50.8 mol, nitrogen concentrations in plant leaves at 2.21 and 2.10 % dry weight, vegetative flushes at 31.0 and 30.5%, leaf area at 2,754 and 2,743 cm2, leaves dry weight at 194 and 193 g, branches and stems dry weight at 310 and 288 and root dry weight at 153 and 152 g, respectively significant higher than the control and zinc sulphate treatments. Zinc concentration on the plant leaves in zinc sulphate treatment at 78.2 mg/kg had significant higher than other treatments. |
