สืบค้นงานวิจัย
Nutrient Management in Rubber Seedling Nursery: Effect of Inorganic and Biofertiltzers
Syamala V.K. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Nutrient Management in Rubber Seedling Nursery: Effect of Inorganic and Biofertiltzers
ผู้แต่ง / หัวหน้าโครงการ (EN): Syamala V.K.
บทคัดย่อ (EN): Seedling nurseries of rubber are established for producing healthy stock seedlings for bud grafting. The beneficial use of fertilizers at different stages of growth has been reported earlier earlier. Adequate and timely applications of fertilizers help to achieve early buddable girth. The possibliltyalso has been reported using plant growth promoting rhizobacteria (PGPR), a mixture of phosphate solubilising bacteria, nitrogen fixing bacteria (Azotobacter) for improving the growth of rubber seedlings in the nursery also has been reported. Earlier study indicated that the fertilizer requirement in seedling nursery is considerably lower than the present recommendation. Hence experiments were conducted at different locations with varying soil nutrient status to find out the optimum dose of fertilizers. First seedling nursery experiment was conducted at the Central Experiment Station. Chethackal of the Rubber Research Institute of India. Soil of the study area was acidic in reaction, high in organic carbon. Available P and Mg while low in available K status during 2009-2010 season. The treatments included no fertilizer control, standard practice, soluble form of N and P@ 150 kg/ha and 250 kg/ha as ammophos (20-20) and PGPTR in combination with N and P@ 150 kg/ha as ammophos (20-20) in randomized block (RBD) design with six replications with a plot size of 48 plants/plot. Diameter of plants and green and brown budability were analysed statistically. The second study was conducted during 2011-2012 season, at Central Nursery, Karikkattoor with three treatments viz: standard practice and N and P@ 250 with sources of N and P as urea and rock phosphate and as ammophos (20-20) in RBD design with 12 replications with a plot size of 60 plants/[lot. The experiment field was high in organic carbon, available P. K. and Mg and the soil was acidic in reaction. The third experiment was laid out at Regional Nursery, Kanhikulam, and Palaked during 2011-2012 seasons in a field with pH in acidic range, medium in organic carbon and available Mg. high in available P white low in available K status with six treatments and six replication in RBD design with a plot size of 60 plants/plot. Treatments were standard practice (NPK@500:250:100kg/ha) and N and P@ 250 kg/ha with sources of N and P as urea and rock phosphate and as ammophos (20-20) and each treatments in combination Mg. Diameter and green buddability of the plants were statistically analyzed. Application of inorganic fertilizer alone or integrating with PGPR significantly increased the diameter and buddability of rubber seedlings in the experiment at the Central. Experiment Station, Chethackal. Among the treatments. Highest green buddability was noticed with application of N and P@ 150 kg/ha as ammophos (20-20) in combination with PGPR and it was on per with standard practice and N and P@ 150 kg/ha as ammophos four months after planting. Ten months after planting, highest brown buddability was noticed in the treatment where N and P@ 250 kg/ha was applied as ammophos (20-20) and it was on par with standard practice and N and P@ 150 kg/ha as amomophos (20-20) in combination with PGPR. No significant difference was observed between the treatments viz: standard practice and N and P@ 250 kg/ha in diameter and green buddability of plants at Central Nursery, Karikkattoor and Regional Nursery, Kanhikulam. The results of seedling nursery studies clearly showed that healthy and vigorous seedlings can be generated by the application of a lower dose of fertilizers compared to the standard practice. All these studies confirm the possibility of reducing the present fertilizer recommendation of seedling nursery.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): bud grafting
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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Syamala V.K.. "Nutrient Management in Rubber Seedling Nursery: Effect of Inorganic and Biofertiltzers". ไม่ระบุหน่วยงาน. ม.ป.ป.

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Nutrient Management in Rubber Seedling Nursery: Effect of Inorganic and Biofertiltzers
Syamala V.K.
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
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