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Nutrient Management for Sustaining Soil Fertility and Yield of Mustard-mungbean-t.aman Cropping Pattern (2018-19)

M. J. ALAM
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. A. SALAM
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. H. R. SHEIKH
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

S. AKHTER
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. A. HOSSAIN
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

A long term field trial on Mustard-Mungbean-T.aman cropping pattern has been conducted from 2000-2018 in High Ganges Floodplain Soils (AEZ-11) of Ishurdi and Jessore. The objectives were to find out sustainable fertilizer doses for the pattern, monitor soil health, estimate uptake of different nutrients and make a balance sheet for each of the nutrient. There were three levels each of N (80, 120 and 160 kg ha^-1), P (18, 36 and 54 kg ha^-1) and K (35, 70 and 105 kg ha^-1) in the treatment combinations. The design was RCB replicated thrice. The combined effect of 120-36-70-40-3-1 kg ha^-1 of NPKSZnB (T₂) produced the highest seed yield of Mustard, Mungbean and grain yield of T.Aman. Average of seventeen years experimentation at two locations, highest total rice (system) yield of 14.48 t ha^-1 year^-1 was obtained from T₂ treatment. Lowest total rice (system) yield of 8.88 t ha^-1 year^-1 was obtained from control i.e. native fertility treatment (T₈). Highest gross margin of 289607 Tk. ha^-1 yr.^-1 and BCR of 1.84 obtained from T₂ treatment. The average soil fertility status were mostly unchanged, somewhere it was changed positively. As K showed negetive balance, more K is to be added to improve soil fertility status.

Keywords: Cropping pattern, Soil fertility, Nutrient mangement

Location: RARS, Joshore and Ishurdi

Start Date: 00-00-2000

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Mustard, Mungbean, Rice

Objectives:

To determine optimum fertilizer doses and nutrient balance using nutrient management approach.

Methodology:

This field trial was conducted in High Ganges River Floodplain Soils (AEZ-11) of Ishurdi and Jessore during the period of 2000-2018 to estimate the contribution and efficiency of individual nutrients and to find out Mustard-Mungbean-T.aman cropping pattern based fertilizer recommendation. Nutrient status of initial soil prior to fertilization was determined. The experiment was laid out in RCB design with eight treatments and replicated three times. The unit plot size was 5m x 4m. There were three levels each of N (80, 120 and 160 kg ha^-1), P (18, 36 and 54 kg ha^-1) and K (35, 70 and 105 kg ha^-1) in the treatment combinations. BARI Sharisha-14 was used for the study and 40 kg S, 3 kg Zn and 1 kg B ha^-1 were applied as a blanket dose in all the treatment except the absolute control treatment. All PKSZnB and half of N were applied at the time of final land preparation and the remaining N was applied before flowering stage. The seeds were sown in the 3^rd week of November. Only nitrogen was applied at the rate of 20 kg N ha^-1 in all the plots except the control treatment for the second crop mungbean (Var. BARI Mug-6). The seeds were sown in the 1^st week of March and picking was started in the 2^nd week of May and continued up to the 1^st week of June. After the harvest, the total biomass was ploughed down in the soil. The fertilizer was applied in T. aman (BRRI dhan33) according to the schedule. The seedlings were transplanted on 1^st week of August and harvested in the last week of October. Records on some yield parameters were taken at certain growth stages of all the crops of the pattern. Data were analyzed by ANOVA (using Crop Stat 7.2) to evaluate differences between treatments, and the means were separated using least significant difference (LSD) at the 5% level of significance (p<0.05). The treatment combinations for mustard and T. aman were done.

Source of Information: Annual Report 2018-2019, Soil Science Division, BARI, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The average soil fertility status were mostly unchanged, somewhere it was changed positively. As K showed negative balance, more K is to be added to improve soil fertility status. So, through this practice the soil nutritional status may be sustained

Knowledge Management: Report/Proceedings