สืบค้นงานวิจัย
Secondary and Micronutrient Nutrition in Rubber Seedling Nursery
Mercykutty Joseph - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Secondary and Micronutrient Nutrition in Rubber Seedling Nursery
ผู้แต่ง / หัวหน้าโครงการ (EN): Mercykutty Joseph
บทคัดย่อ (EN): The soils under rubber cultivation are highly weathered acid soils. Under the prevailing humid tropical climate with very high intensity rainfall, the fertility of the soil declines through the removal of surface soil by runoff and erosion, through leaching and removal of nutrients especially cations, in addition to the removal through crop uptake. Decline in the status of secondary and micronutrients is an emerging soil fertility constraint in these soils, as in general, these nutrients are not replenished through fertilizer supplements. In rubber (Hevea brasiliensis), seedling plants are raised either in the ground nursery or in polythene bags for producing good quality root stock plants. On to this stock plants, bud from elite clone is grafted to produce the planting material of choice. In permanent nursery sites this process is repeated every year. The current recommended dose of chemical fertilizers to the seedling nursery is 500 kg N, 250 kg P2O5 ,100 kg K2O and 37.5 kg MgO/ha. Magnesium application is recommended only in the central part of Kerala where the soil is reported to be deficient in Mg status. Field experiment in rubber seedling nursery was conducted during 2011-2012 plating season at the Central Nursery of the Rubber Board where the soil is extrdmely acidic with Ph 4.2 and low in available potassium (K), magnesium (Mg), Zinc (Zn), Boron (B), extremely deficient in available calcium (Ca) and high in available phosphorus (P). The objective of the study was to find out the effect of application of secondary and micronutrients on the growth of seedling plants in the nursery where the soil was extremely acidic and deficient in Ca, Mg. Zn and B. The fertilizer treatments were standard recommended dose of N.P and K (SP), SP+CA (T2), SP+Mg (T3), SP+Zn (T4), SP+B (T5), SP+ combination of Ca+Mg+Zn+B (T6) and soil test based fertilizer recommendation (T7) where Ca, Mg. Zn and B. was applied in combination with half the recommended level of N and P and 25 per cent extra dose of K. Nitrogen. P and K were supplied through urea. Rajphos and muriate of potash. Respectively. Calcium was supplied through powdered shell lime @ 750 kg/ha (7.5 kg/100 Sq.M.). Magnesium was supplied through magnesium sulphate @ of 50 kg/ha (0.5 kg/100 Sq.M.). Zinc was supplied @ 25 kg/ha (2.5 kg/100 Sq.M.). and B as Borax @ 12.5 kg/ha (1.25 kg/100 Sq.M.). Sprouted seeds were planted in the nursery bed as per the general guidelines of the standard nursery practice. Growth of the plants (diameter) was recorded during December 2011 and January 2012 and the plants were used for green budding during the first week of February. Leaf samples were collected during March 2012 and analyzed for the total nutrient concentration. Similarly, soil samples were also collected during March 2012 and nutrient availability was assessed. Statistical significance between treatments was recorded in the growth of the plants. During the first observation recorded in December (four month old plants), the highest diameter was recorded in treatments T6 (SP+Ca+Mg+Zn+B) followed by T7 (soil test based fertilizer recommendation) which were on par with SP+Mg and SP+Zn treatments and were significantly superior to the standard practice. The diameter during January 2012 also recorded statistical significance between treatments. The highest growth was recorded by the treatment T7 (soil based fertilizer recommendation) and this was on par with all the other treatments, except the standard practice indicating clearly the beneficial effect of application of secondary and micronutrients, either individually or in combination. In the plots where boron was not supplied, its status was only in traces. But in the SP+B treated plots, the available B was improved and was brought to the critical level. Calcium application through lime significantly improved the calcium availability in the soil but pH of the soil, remained in the extremely acidic range. Soil test based balanced fertilizer application was found to be the best treatment in improving the growth of the plants and in maintaining the fertility of the soil. Similarly, saving in fertilizer cost is also achieved by reducing the dose of N and P fertilizer to half the recommended dose. The present study clearly indicated the importance of secondary and micronutrient supplements in achieving good growth of plants and in maintaining the fertility and productivity of the soil.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เผยแพร่โดย (EN): การยางแห่งประเทศไทย
คำสำคัญ (EN): growth of plant
เจ้าของลิขสิทธิ์ (EN): การยางแห่งประเทศไทย
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Mercykutty Joseph. "Secondary and Micronutrient Nutrition in Rubber Seedling Nursery". ไม่ระบุหน่วยงาน. ม.ป.ป.

Mercykutty Joseph. "Secondary and Micronutrient Nutrition in Rubber Seedling Nursery". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Secondary and Micronutrient Nutrition in Rubber Seedling Nursery
Mercykutty Joseph
การยางแห่งประเทศไทย
ไม่ระบุวันที่เผยแพร่
The Role of Myanmar Rubber Planters and Producers Association (MRPPA) in Natural Rubber Development and its Recent Activities SUDDEN DIEBACK OF YOUNG BUDDED RUBBER (Hevea brasiliensis Muell. Arg.) PLANTS AT NURSERY STAGE UNDER HOT AND DRY CLIMATIC CONDITIONS FEASIBILITY OF RUBBER (Hevea brasiliensis Mull. Arg.) CULTIVATION IN THE EASTERN PROVINCE OF SRI LANKA; A NON TRADITIONAL AREA FOR RUBBER Hydrogen Peroxide is Essential for Wound-Induced Secondary Laticifer Differentiation via Activating Jasmonate Biosynthesis in Rubber Tree (Hevea brasiliensis Müll. Arg.) Impact of Salicylic Acid Treatment to Enhance Drought Tolerance of Nursery Rubber Plants (Hevea brasiliensis Mull.Arg) When Introducing Them to Monaragala District in the Intermediate Zone of Sri Lank Nutrient Management in Rubber Seedling Nursery-Studies in the Integrated Approach through Incorporation of Bio Inoculants Using Geographic Information System (GIS) to investigate Natural Rubber Yield (Hevea brasiliensis) in Conjunction with Soil Fertility: a Case Study from Cam My Rubber Plantation, South-Eastern of Viet Control of Fusicoccum Secondary Leaf Fall on Hevea brasiliensis Effect of Temperature Constraints on Photosynthesis of Rubber (Hevea brasiliensis) EVOLUTION OF SOIL FERTILITY AND ITS CORRELATION WITH RUBBER TREE LEAF NUTRITION IN RUBBER PLANTATION
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