Physiology of The Rice Plant

Effect of nitrogen application during ripening period on photosynthesis and dry matter production and its impact on yield and yield components of semidwarf iniica rice varieties under water culture conditions

“…These findings may be ascribed to the maintenance of a larger leaf area and better photosynthesis by the apex leaves especially the flag leaf and 2-3 leaves below it during RP. Ishizuka and Tanaka (1969) reported that the apex leaves including flag leaf played a very important role in grain ripening. These results agreed with the reports ofTakeda et al (1980) and Nonoyama et al (1989) who used japonica-indica hybrids under field conditions and the reports of Inthavongsa et al (1985) who used improved indica type varieties under pot culture conditions.…”

Role of nitrogen regulation in sink and source formation of high-yielding rice cultivars

“…The absorption of N in the rice plant is related to tiller emergence, leaf area development, photosynthesis, dry matter accumulation, spikelet formation, and yield (Ishizuka and Tanaka 1969;Wada 1969). Information on these aspects has contributed significantly to the increase of the economic yield in rice.…”

Doses e modos de adubação com manganês e seus efeitos na produção da cultura do arroz

“…Dentre os componentes de produção avaliados, optou-se por discutir aqueles resultados que os associam, como é o caso da relação panícula/perfilho (perfilho produtivo) e a percentagem de grãos cheios, que envolve o número de grãos cheios e o total de grãos, que, ao fazerem parte dos componentes da produção, definem o rendimento de grãos e, conseqüentemente, a produção do arroz (Ishizuka, 1971). …”