RICE RATOONING - IRRI books - International Rice Research Institute

RICE RATOONING IN RIO DE JANEIRO 59Table 5. Milling quality grain translucence, and 1,000 grain weight of main crop and ratooncrop of rice cultivars at 3 cutting heights, 1984. aMain cropRatoonCultivar Cutting MR HG GT 1,000-GW MR HG GT 1,000-GWheight (%) (%) (%) (g) (%) (%) (%) (g)(cm)MG209P102IR841P101L-5738P899Metica 1De Abril102030102030102030102030102030102030102030102030636659646367636563636258636766606063616365595958506052523650545143555742545454503238524953424542736674767779898689867176938184717774868180404141232222212221262526262626262525252426252325312825556151495561545659–4650505857575460575958–5953424849364360504955–3239405149352940414640–4544898784918988959193–8789969694787566928893–4141212221211820242424–2221222222232424202121–2825a Mean of three replications for each cutting height. MR = milled rice, HG = head grain, GT =grain translucence, GW = grain weight.7. Cutting height did not influence grain quality of the main crop or of the ratooncrop;8. Ratooning may be a satisfactory agronomic practice, requiring less labor andcosts than growing another conventional rice crop.REFERENCES CITED1. Andrade, W. E. de B., S. Amorim Neto, A. B. de Oliveira, and M. B. Fernandes. 1985. Height ofcutting of the main crop influences rice ratoon yield [in Portuguese]. Pages 173-178 in Irrigated riceworkshop, 14 Pelotas.2. Balasubramanian, B. Y., B. Morachan, and R. Kaliapa. 1970. Studies on ratooning in rice. Growthattributes and yield. Madras Agric. J. 57(11):565-570.3. T. Ishikawa. 1964. Studies on the ratoon of rice plant in early cultivation [in Japanese, with Englishsummary]. Bull. Fac. Agric. Univ. Jpn. 10(1):72-78.4. F. Nascimento Neto, L. Nunes Nunes, and M. de Andrade. 1984. Environmental factors can limit riceratoon utilization by farmers [in Portuguese]. PESAGRO-RIO Technical Paper 31, Nov 1984,Niteroi. 2 p.5. Oliveira, A.B. de, and S. Amorim Neto. 1979. Rice ratooning production of rice cultivars in differentsowing dates in the Norte Fluminense Region [in Portuguese]. PESAGRO-RIO Technical Pap. 31,Nov 1979, Niteroi. 3 p.