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Trends in irrigated rice yields under intensive cropping at philippine research stations

, : Trends in irrigated rice yields under intensive cropping at philippine research stations. Field Crops Research 9(1): 1-16

Trends in rice yields were estimated from N-response experiments conducted at 4 locations in the Philippines-Maligaya Rice Research and Training Center (MRRTC), Bicol Rice and Corn Experiment Station (BRCES), Visayas Rice Experiment Station (VRES) and IRRI [International Rice Research Institute]. The largest dry-season decline in yield of 'IR8' occurred at IRRI, where yields fell by .apprx. 0.3 t ha-1 yr-1. IR8 yields in the same season fell by slightly > 0.1 t ha-1 yr-1 at BRCES, and did not decline at MRRTC. In the wet season, the yield decline of IR8 was highest at BRCES (> 0.2 t ha-1); at IRRI it was > 0.1 t ha-1 yr-1. Wet-season yields of IR8 or of the highest yielding entry (HYE) at MRRTC or VRES did not decline. Yield declines of the HYE were less than those of IR8. In the dry season, they were > 0.1 t ha-1 yr-1 at IRRI but no significant decline was observed at MRRTC or BRCES. In the wet season, they were in the order of 0.1 t ha-1 yr-1 at IRRI and BRCES. No significant wet-season yield decline was observed at MRRTC or VRES. Declining yields at IRRI are thought to be largely due to B toxicity, Zn deficiency, increased disease and insect pressure and lodging. Their causes at the other sites are not understood. IRRI has initiated experiments to examine this tissue.

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Other references

Cattell, J.M., 1896: Psychological Notes. Science 4(88): 307-309

Schmidt Karl Heinz, 1996: Talus and pediment flatirons; indicators of climatic change on scarp slopes on the Colorado Plateau, USA. Zeitschrift fuer Geomorphologie Supplementband

LOMBARD.H.L.; POTTER.E.A., 1950: Epidemiological aspects of cancer of the cervix. II. Hereditary and environmental factors. Cancer 3(6): 960-968

Anonymous, 1979: Professional profiles: the nurse practitioner. Rnao News 35(2): 10-13

Jayal, M.M.; Kehar, N.D., 1962: A study on the nutritive value of mulberry (Morus indica) tree leaves. In a trial lasting 28 days 6 sheep were given mulberry leaves to appetite as the only feed. They were palatable and average daily intake was 3-44 lb dry matter (DM) per 100 lb bodyweight per day. Digestible crude protein was 10.68% of DM and total...

Davis, O.K., 1990: Complications of assisted conception techniques. Current Opinion in Obstetrics & Gynecology 2(5): 721-725

Duan, J.; Liang, X.; Guo, J.; Zhu, K.; Zhang, L., 2016: Ultra-Stretchable and Force-Sensitive Hydrogels Reinforced with Chitosan Microspheres Embedded in Polymer Networks. NlmCategory="UNASSIGNED">An ultra-stretchable and force-sensitive hydrogel with surface self-wrinkling microstructure is demonstrated by in situ synthesizing polyacrylamide (PAAm) and polyaniline (PANI) in closely packed swollen chito...

Ottmann Francois; Picard Jacques, 1954: Sur quelques mouvements tectoniques recents sur les cotes nord et est de la Sicile. Description of evidence of tectonic movements on the north and east coasts of Sicily, Italy, which occurred in late Quaternary or even in historic time.

Heimann, P., 1970: Perfusion fixation with glutaraldehyde for electronmicroscopy of human thyroid tumours. Acta Pathologica et Microbiologica Scandinavica. Section A, Pathology 78(6): 695-700

Håkanson, R.; Owman, C.; Sjöberg, N.O., 1969: Three different systems of monoamine-storing cells in the gastrointestinal tract of fetal and neonatal rats. Acta Physiologica Scandinavica 75(1): 213-230