EFFECT OF METHODS OF CROP ESTABLISHMENT ON YIELD OF DIFFERENT AUS RICE VARIETIES
Date
2008-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
HAJEE MOHAMMOD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR
Abstract
An experiment was conducted at the Agronomy Research Field, Hajee
Mohammad Danesh Science and Technology University, Dinajpur during the
period from March to July, 2007 to evaluate the effect of broadcast seeding and
drum seeding on three modern aus varieties viz. BR3, BR14 and BR26. Crop
establishment methods showed a significant effect on yield and yield
components. Drum seeded rice yielded higher than broadcast seeded rice. The
higher yield (3.73 t ha™') was obtained from T2 (direct seeded double row)
method due to higher number of effective tillers m‘, and higher number of
grains m™. The other two drum seeding method T, (direct seeded thin row) and
T; (direct seeded thick row) produced statistically identical grain yield of 2.88 t
ha” and 3.05 t ha" respectively while for broadcasting grain yield record was
2.54 t ha’. Mainly higher percentage of spikelet sterility, lower number of
tillers and less grain weight caused yield loss in broadcast seeded rice. The
results indicated that BR14 significantly produced higher grain yield compared
to BR3 and BR26. The grain yield performance of BR26 is slightly higher than
that of BR3.
Description
Rice is the principal carbohydrate supplying food crop for the people of
Bangladesh. About 73% of total cultivated lands are used for rice production. It
is grown over 905 thousand hectares under diverse irrigated and rainfed
conditions in the three seasons (BBS, 2007). In the last few years, rice
productivity has steadily been increasing in Bangladesh. Bangladesh is facing
some food shortage for long time due to its population pressure. It is, therefore,
necessary to produce more and more food crops to achieve the goal of self-
, sufficiency in food supply to the teeming millions.
Keywords
YIELD, DIFFERENT AUS RICE VARIETIES, Drum seeder