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Integrated Nutrient Management for Sustaining Soil Fertility and Yield of Wheat-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 experiment on Wheat-Mungbean-T.aman cropping pattern has been carried out in High Ganges Floodplain Soils (AEZ-11) of RARS, Ishurdi and Jessore during the year of 2000-2018. There were six treatments viz. 125% of recommended dose (RD =120-35-75-20-5 kg of N P K S Zn ha^-1), 100% of RD, 75% of RD, 50% of RD, farmers' practice and native fertility. The design was RCBD with three replications. Results showed consistently highest yield from each of the crops of the pattern obtained with 125% RD treatment and which were statistically similar to 100% RD treatment. Average of seventeen years experimentation at two locations, highest total rice (system) yield of 14.05 t ha^-1 year^-1 was obtained from T₁ treatment (125% RD). Lowest total rice (system) yield of 7.73 t ha^-1 year^-1 was obtained from control i.e. native fertility treatment (T₆). Highest gross margin of 1,20,099 Tk. ha.^-1 yr.^-1 was also obtained from T₁ treatment (125% RD). The higher benefit cost ratio of 1.75 and 1.74 was found in T₁(125% RD) and T₂ treatment (100% RD), respectively. The results revealed that soil fertility sustained in 125% of RD and 100% of RD treatments.

Keywords: Cropping pattern, Soil fertility, Nutrient mangement

Location: RARS, Ishurdi and Jessore

Start Date: 00-00-2000

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Soil fertility, Wheat, Mungbean, Rice

Objectives:

i) to find out sustainable fertilizers recommendations for wheat-mungbean-T.aman cropping pattern;

ii) to monitor soil health after each cropping pattern; and

iii) to estimate uptake of different nutrients and to make a balance sheet for each nutrient.

Methodology:

This field trial was conducted in High Ganges River Floodplain Soils (AEZ-11) of RARS, Ishurdi and Jessore during the period of 2000 to 2018. A description of nutrient status of initial soils prior to fertilization has been determined. The experiment was laid out in a RCB design with six treatments replicated three times. The unit plot size was 5m × 6m. The treatment combinations were T₁= 125% of recommended dose (RD) (RD =120-35-75-20-5 kg of N P K S Zn ha^-1), T₂ = 100% of RD, T₃= 75% of RD, T₄= 50% of RD, T₅= Farmers' practice and T₆= Native fertility. The farmers' practice treatment for wheat was 60-18-30 kg ha^-1 of NPK respectively. Firstly the tested wheat variety was Shourav, from 2009 it was Shatabdi and now it is BARI Gom-26. All PKSZn and 2/3^rd of N were applied at the time of final land preparation and the remaining ¹/₃^rd of N was applied after first irrigation (17-21 DAS). The seeds were sown in 4^th week of November and were harvested in 2^nd week of March. Only nitrogen was applied @ 20 kg N ha^-1 in all the plots except the native fertilityt treatment for the second crop mungbean (Var. BARI Mug-6). The seeds were sown in the 3^rd week of March and first picking was on the 2^nd week of May and continued up to 1^st week of June. Then the total biomass was incorporated in the soil.The same sequence was maintained in T.aman (BRRI dhan33) for fertilizer treatments. The seedling were transplanted in the 1^st week of July and harvested in the 1^st week of November. 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).

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

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

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

Knowledge Management: Report/Proceedings