สืบค้นงานวิจัย
Effects of Neem Coated Urea on the Yield of Lowland Rice on Bangkok Plain
N.S. Murali - กรมวิชาการเกษตร
ชื่อเรื่อง (EN): Effects of Neem Coated Urea on the Yield of Lowland Rice on Bangkok Plain
ผู้แต่ง / หัวหน้าโครงการ (EN): N.S. Murali
บทคัดย่อ (EN): Neem (Azadirachta indica A. Juss) seed extract is considered as a nitrification inhibitor, and is cheaper than the synthetic nitrification inhibitors. A local manufacturer has produced urea coated with neem seed extract. Two field experiments with cultivar Suphanburi-90 were conducted during the dry season from February to June 1994 at AIT Experiment Station, Bangkok, to evaluate the effects of neem coated urea on the yield of lowland rice. N was applied at 30 kg N ha as basal application and 32.8 kg N ha as topdressing and P was applied basal at 16.5 kg ha The first experiment consisted of four N sources viz. i) Ammophos (16-20-0) as basal and 21-0-0 as topdressing (AP+AM), ii) Urea (46%N) + triple super phosphate (TSP) as basal and urea as topdressing (Urea+Urea), iii) Neem coated urea (25%N, NCU)+ TSP as basal and NCU as topdressing (NCU+NCU), and iv) Urea+TSP as basal and NCU as topdressing (Urea+NCU) in a Randomized Block Design with five replicates. The grain yield showed no significant differences between the different N sources. Among the yield components, 1000 grain weight was decreased with NCU alone but number of panicles per m and % filled grain were not effected by N source. The second experiment comprised of three land preparation methods viz. i) Transplanted rice, ii) Wet seeded rice, and iii) Dry seeded rice with two N sources viz. urea and NCU in a completely randomized design with four replicates. Yield components and grain yield did not show any significant differences between urea and NCU. Furthemore, NCU showed no effect on either grain N uptake or N response. From these experiments it was concluded that NCU does not have an advantage over other sources of N fo rlowland rice on Bangkok plain.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): th
เผยแพร่โดย: กรมวิชาการเกษตร
คำสำคัญ (EN): N fertilizers
เจ้าของลิขสิทธิ์: กรมวิชาการเกษตร
หากไม่พบเอกสารฉบับเต็ม (Full Text) โปรดติดต่อหน่วยงานเจ้าของข้อมูล

การอ้างอิง

N.S. Murali. "Effects of Neem Coated Urea on the Yield of Lowland Rice on Bangkok Plain". กรมวิชาการเกษตร. 2538

N.S. Murali. "Effects of Neem Coated Urea on the Yield of Lowland Rice on Bangkok Plain". กรมวิชาการเกษตร. 2538. Print.



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Effects of Neem Coated Urea on the Yield of Lowland Rice on Bangkok Plain
N.S. Murali
กรมวิชาการเกษตร
2538
Effect of water and rice straw management practices on yield and water productivity of irrigated lowland rice in the Central Plain of Thailand Effect of Water and Rice Straw Management on Yield and Water Productivity of Irrigated Lowland Rice in Ayutthaya Effects of water and rice straw management practices on water savings and greenhouse gas emissions from a double-rice paddy field in the Central Plain of Thailand Coupling Effects of Water and Fertilizers on Latex Yield of Hevea brasiliensis Responses of rainfed lowland rice genotypes to terminal drought in Northeast Thailand Effects of root hair length on potassium acquisition in rice (Oryza sativa L.) Effect of Methanol on the Growth of field Crops Under Water Stress on Bangkok Plain Practices sustaining soil organic matter and rice yield in a tropical monsoon region EFFECTS OF RATES AND TIMES OF NITROGEN SUPPLY ON GROWTH AND YIELD OF SUNFLOWER C.V.HYSUN 33 Effects of salinity on photosynthesis and growth of rice and alleviation of salt-stress by exogenous spermidine
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