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Yield Maximization.

Dr. Bilash Chndra Roy
SSO
Agronomy Division, BRRI.

Abstract/ Executive Summary:

Rice yield is declining or in static condition because of many factors of which soil degradation deserves special attention for improving rice yield. Different options are available for rice yield improvement in which integrated nutrient management play an important role.Objective of this study was to apply the techniques to obtain the potential yield of rice. A trail was therefore conducted at BRRI farm, Gazipur during 2004 and 2005. There was 14-16% more panicle production in 2/3rd STB+ poultry litter and yield target basis fertilizer management treatments, which had been reflected in grain yield. From the present investigation it was found that BRRI recommended fertilizer dose was not enough at BRRI farm for satisfactory grain yield. Almost similar trends were observed during Boro season. It was further revealed that poultry litter played in important role for increased rice production.

Keywords: Yield maximization, Rice, Boro season,Soil test based fertilizer management.

Location: BRRI farm, Gazipur.

Start Date: 01-07-2004

End Date: 30-06-2005

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To apply the techniques to obtain the potential yield of rice.

Methodology:

A trail was therefore conducted at BRRI farm, Gazipur during 2004 and 2005. Treatments imposed were soil test based (STB) fertilizer management (80-15-26-8 kg/ha of NPKS during T. Aman and 120-6049-9 kg/ha during Boro season), 2/3rd of STD+ 2.5 t/ha poultry liter, yield target basis (7 t/ha in T. Aman and 10 t/ha in Boro season and compared with BRRI recommended fertilizer dose (80-11-40-9-2 kg/ha of NPKSZn in T. Aman and 120-37-36-10-2 kg/ha in Boro season). In case of 7 t/ha grain yield, fertilizer was used at 123-21-119-8 hg/ha of NPKS in T. Aman; while for 10 t/ha was 236-141-169-22 hg/ha in Boro season. The treatments were assigned in a randomized complete block design with three replication. Unit plot size was 4 x 3 m. BRRI dhan31 was used as test crop in T. Aman season and BRRI dhan29 in Boro season.

Source of Information: BRRI. Proceedings of the BRRI Annual Internal Review for 2004-2005. Bangladesh Rice Research Institute (BRRI). Gazipur -1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

There was no significant difference in plant height and panicle production due to fertilizer management during T. Aman season. However, there was 14-16% more panicle production in 2/3rd STB+ poultry litter and yield target basis fertilizer management treatments, which have been reflected in grain yield. From the present investigation it was found that BRRI recommended fertilizer dose was not enough at BRRI farm for satisfactory grain yield. Almost similar trends were observed during Boro season. It was further revealed that poultry litter played in important role for increased rice production.

Knowledge Management: Report/Proceedings