@article{Hosein:257030,
      recid = {257030},
      author = {Hosein, Azim and Paul, Compton},
      title = {STUDIES ON THE EFFECT OF THE GROWTH HORMONE CERONE 720 ON  THE YIELD OF RICE (var. Rustic) IΝ GUYANA},
      address = {1996-07-07},
      number = {1888-2017-844},
      pages = {10},
      year = {1996},
      abstract = {A series of trials was carried out with the growth hormone  CERONE 720 (active ingredient ethephon) on rice (var.  Rustic) in Guyana during the Autumn cycle of 1995 and  Spring cycle of 1996. In 1995, (here was three experiments  while in 1996 there was a larger scale on-fann experiment.  The result were as follows: Experiment 1 - in which twelve  CERONE 720 application rates ranging from 0 lo 51.20 g aJJL  of water were administered to seed under 10 cm simulated  flooded condition. The O.16-O.32g a.i./L range of  treatments increased (P<0.001) seedling emergence above the  flood water level 42% to 80%. The CERONE 720, therefore,  increased the rate of elongation of the rice seedling  leaves under flood. Experiment 2 - in which CERONE 720 was  found to increase rice yield in a fanner's field by  approximately 6% when applied as a seed treatment at the  rate of 1.44g a.i./L of water. This trial also indicated  dial a seedling rate οΓ 100 kg ha'1 could leap to a  significantly (P<0.05) higher yield than (lie normal rate  of 150 kg lia"1 if CERONE 720 was applied to seed at the  lower seedling rale; this gave a saving of 50 kg ha"1 of  seed while at the same time providing an additional 0.24 l  ha"1 of grain. Experiment 3 - in which CERONE 720 was  applied to experiment station plots as a foliar spray just  prior to panicle initiation at the rate of 300 g a.i. ha"1.  Grain yield was increased by approximately 13% while grain  quality was improved. Experiment 4 - in 1996 six large  scale plots were selected in four commercial farmer's field  along the coastal belt of Guyana and CERONE 720 was applied  at (he recommended rate of 300 g a.i. lia"1 as a foliar  spray just prior to panicle initiation to one-half of each  plot; the other half was untreated. The treatment led to an  average increase in grain yield of 620 kg ha"1 or 12.5% of  the variety Rustic which occupied about 70% of the total  area under rice production in Guyana. This yield increase  translated to a net profit increase οΓ approximately US$88  lia"1 (Guy $12496 ha"1) and confirmed on a large scale what  was achieved on experiment station plots in the previous  crop cycle.},
      url = {http://ageconsearch.umn.edu/record/257030},
      doi = {https://doi.org/10.22004/ag.econ.257030},
}