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Effect of Magic Growth on Rice Yield

M N Islam
Scientific Officer
Soil Science Division, BRRI, Gazipur.

F Alam
Scientific Officer
Soil Science Division, BRRI, Gazipur.

P K Saha
Ex-Chief Scientific Officer
Soil Science Division, BRRI, Gazipur.

A L Shah
Ex-Chief Scientific Officer
Soil Science Division, BRRI, Gazipur.

A Islam
Principle Scientific Officer
Soil Science Division, BRRI, Gazipur.

J C Biswas
Chief Scientific Officer
Soil Science Division, BRRI, Gazipur.

Abstract/ Executive Summary:

Investigation during T. Aus 2012 through Boro 2013-14 at BRRI farm, Gazipur evaluated the effect of magic growth (MG) solution on rice. The experiment compared variable doses of N with or without MG along with N control in a randomized complete block design with three replications. Basal application of N with its top dress was also compared with only top dress of N (no basal). All the plots (except control) received a blanket application of phosphorus, potassium, sulfur and zinc. The application of MG spraying produced no yield advantage on rice grain yield in Aus, Aman and Boro seasons. Basal application of N with top dress produced higher yield over N top dressing only in Boro season at lower rate of N.

Keywords: Liquid fertilizer, N spray, N top dress, Basal N, Rice

Location: BRRI farm, Gazipur

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

The experiment compared variable doses of N with or without MG along with N control in a randomized complete block design with three replications.

Methodology:

Series of experiments were conducted at BRRI farm, Gazipur. In all seasons, unit plot size was 4-×5-m and surrounded by 30-cm bund and 50- cm drain. Rice was transplanted at 20- × 20-cm spacing and grown on submerged soil (5-10 cm water depth). The experiments were laid out in a randomized complete block (RCB) design with three replications. The treatment combinations were: 56 kg N ha^-1 + spraying magic growth (MG) five times (T1), 56 kg N ha-¹ (T2), 75 kg N ha-¹ (T3), 75 kg N ha-¹ + spraying MG twice (T4), 38 kg N ha-¹ (T5) and no fertilizer (T6). A basal dose of PKSZn @10-37-7-1 kg ha-¹ was used. Twenty-seven-day-old seedlings of BRRI dhan43 was transplanted on 14 June 2012. Seedlings used in T1 where sprayed with MG liquid fertilizer at 12, 22 days after sowing (DAS) and one day before transplanting. The concentration of MG liquid fertilizer was 2ml L^-1 water for an area of 3- ×1.5-m seed bed. Nitrogen was applied on 10 and 25 DAT at 34 and 17 kg N ha^-1, respectively. Spray of MG at 96 ml 48L^-1 water + 600g urea/33 dec) was done in the afternoon at 25 and 40 DAT. Similar amount of MG was sprayed in the main field in T4. In other treatments, N was applied at basal, 25 and 39 DAT in equal splits. At maturity, the crop was harvested from 5 m² area at the centre of each plot and grain yield was adjusted to 14% moisture content and straw yield was recorded from 16 hills.

Source of Information: Bangladesh Rice J. 19(2): 91-97, 2015

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Similar grain yield was obtained with and without magic growth liquid fertilizer spray at similar levels of N in T. Aus season. Also, there was no added benefit of magic growth spray on grain yield during T. Aman and Boro seasons. Proposition of producer about 44% saving of N due to magic growth spraying did not match with the present results. However, the study showed a significant effect of N fertilizer application method for rice cultivation. Basal application of N with top dresses produced higher grain yield over N top dress only.

Knowledge Management: Journal