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Long-term Missing Element Trial at BRRI Regional Stations

S M Mofizul Islam
Scientific Officer
Soil Science Division, BRRI Gazipur

Pranesh Kumar Saha
Principle Scientific Officer
Soil Science Division, BRRI Gazipur

S. Kaiser Zaman
Chief Scientific Officer
Soil Science Division, BRRI Gazipur

Gaus Ali
Principle Scientific Officer
BRRI Gazipur

HU Ahmed
Principal Scientific Officer
BRRI Gazipur

A Latif Shah
Chief Scientific Officer
Soil Science Division, BRRI Gazipur

Abstract/ Executive Summary:

In T. Aman 2010, omission of any nutrient element from complete treatment (NPKSZn) decreased yield in both Barisal and Satkhira. Similar trend of yield decreasing was also observed in Boro season at both the locations. It indicates that the soil of both sites were deficient in NPKS and Zn. To boost up rice production in those regions needs proper fertilization of NPKS and Zn fertilizers. In char land saline conditions of BRRI farm Sonagazi, the omission of each nutrient from complete treatment decreased yield in both T.Aman and Boro season. It indicates that the fertility of farm soil below optimum level. In other words, for good harvest of rice soil needs all five nutrients i.e. NPKSZn. However, addition of cow dung with NPKSZn produced little bit higher yield than complete treatment (NPKSZn). On the contrary, at BRRI farm Rangpur soil it was found only N deficient.

Keywords: N, P, K, S, Zn, Nutrient deficiency

Location: BRRI farm Barisal, BRRI farm Satkhira, BRRI farm Sonagzi

Start Date: 01-07-2009

End Date: 30-06-2010

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To identify the existence of limiting nutrient(s) in soil of that particular area

Methodology:

The experiments were initiated on a permanent layout at the BRRI farm Barisal in Boro 2009, BRRI farm Satkhira in T.Aman season 2010, BRRI farm Sonagzi in T. Aman 2009 and BRRI farm Rangpur in T. Aman season 2010 using 6 treatments in RCB design with 3 replications. However, absolute fertilizer control and 2 t cow dung (CD) per ha with NPKSZn treatments were included at BRRI farm Sonagazi. The fertilizer rate of Barisal site was NPKSZn @ 150-15-50-10-1 kg/ha for Boro and 60-15-50-10-1 kg/ha for T.Aman while in Satkhira site it was 100-15-60-10-1 kg/ha for Boro and 65-15-60-10-1 kg/ha for T.Aman. At Rangpur site in T. Aman season soil test based (STB) NPKSZn @ 97-7-39-15-0.3 kg/ha was used but in Boro season it was 145-10-57-15-0.6 kg/ha. At Sonagazi site in T. Aman NPKSZn @ 100-15-50-10-2 kg/ha and in Boro season 120-15-50-10-2 kg/ha was used. Urea-N was applied in three 3 equal splits i.e. 1/3 at final land preparation, 1/3 at active tillering stage and 1/3 at 5-7 days before PI stage. Rest of the fertilizers was applied at final land preparation. Treatment details of the long-term missing element experiments, 2010-2011 SL No. Treatment T1 NPKSZn T2 PKSZn (-N) T3 NKSZn (-P) T4 NPSZn (-K) T5 NPKZn (-S) T6 NPKS (-Zn)

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2010- 2011

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of Missing Element Experiment indicate that NPKSZn fertilization was required in Barisal, Satkhira and Sonagazi areas to obtain optimum rice yield, while in Rangpur farm soil needs only N application.

Knowledge Management: Report/Proceedings