 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Effect of Algal Biofertilizer on Yield and protein Content of Rice) ผู้เขียน: นายพงศ์เทพ อันตะริกานนท์ ,  Prasert Amarit, Aparat Chetsumon, Porntip Tancharoenrat สื่อสิ่งพิมพ์:pdf AbstractFour strains of nitrogen fixing blue-green algae, namely Anabaena siamensis, Anabana lutea, Nostoc sp. 46 and Nostoc sp. 79. Mixed cultures were applied as biofertilizers to four paddy soil samples, taken from Rangsit, Khok Sumrong, Sakhon Nakorn and Surin areas. Pots which were arranged in completely randomized design consisted of 3 replicaions and 2 treatment in each replication. These treatments comprise an unbiofertilizer and a biofertilizer which biofertilizer rate wae applied equally at 4 grams of blue green algae per 10 kilograms of soil sample. The results showed that algal biofertilizer enhanced the growth and yield of the rice significantly, which was noticeable in the dry weight of the straw and grain of rice, for all sources of soil. Grain yield of rice in these soils increased from the check of 32.07, 34.87, 8.86 and 21.49 to 53.14, 49.53, 20.02 and 49.60 grams per pot, respectively. The responsiveness of rice which received algal biofertilizer was difference. The percentage increase in yield ranged from 42% in Khok Sumrong soil and 66% in Rangsit soil, to 126 and 131% in Sakhon Nakorn and Surin soil, respectively. Significant increase in protein content of rice with the application of biofertilizer was from the check of 5.03, 5.14, 6.75 and 5.25 to 6.45, 6.53, 7.80 and 7.11 percent respectively. The difference in plant N-uptake level, after the application of algal biofertilizer gave 383.50, 310.00, 222.20 and480.70 milligrams per pot, respectively. |
หัวเรื่อง:ผลของสาหร่ายสีน้ำเงินแกมเขียวและปุ๋ยไนโตรเจนต่อผลผลิตของข้าวในดินเค็ม ผู้เขียน:นายพงศ์เทพ อันตะริกานนท์, Prasert Amarit สื่อสิ่งพิมพ์:pdf AbstractA pot experiment was conducted to determine the effects of blue-green and nitrojen fertilizer on growth and yield of rice variety RD7. grown on a Kularonghai soik series (Natraqualfs, sandy loam, EC 2.75 mmho/cm and organic matter 0.40%). Pots were arranged in randomized complete block design with 4 replications and 6 treatments. The treatments were absence and presence of algal inoculant which was a mixture of Anabaena sp., Nostoc sp., Hapalosiphon sp. No. 697 and Stigonema sp. No. 617, nitrogen fertilizer (urea) at level of 30 and 60 kg N/rai alone or combinations of the two levels of nitrogen fertilizer and blue-green algae. Results indicated that 1. Application of nitrogen fertilizer at the lower level (30 kg N/rai) in saline soil was more effective in improving the growth and yield of rice than that at the higher level (60 kg N/rai) 2. Blue-green algal growth could be observed in saline soil inoculated with algal biofertilizer. The nitrogen content in straw, grain yields and the protein content of rice was significantly increased in algalized pots. Grain yield was increased from 5.1 to 6.1 grams in pots by algal biofertilizer. The protein content of rice grain increased from 8.3 to 10.6% 3. The combination of algal biofertilizer and nitrogen fertilizer was more effective in increasing rice yield that the application of nitrogen fertilizer alone. Application of 30 and 60 kg N/rai in combination with blue-green algae gave grain yields of 11.2 and 8.1 g/pot, whereas application of 30 and 60 kg N/rai alone gave 8.8 and 6.8 g/pot, respectively. |