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Integrated Nutrient Management for Lentil+mustard Mixed Cropping System (2019--2020)

M. A. SALAM
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M. A. ISLAM
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M.J.HOSSAN
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

R.U. CHOUDHURY
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

M. O. ALI
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Abstract/ Executive Summary:

A field experiment was conducted at the research field of Pulses Research Centre, Regional Agriculture Research Station, Ishurdi, Pabna during 2018-19 and 2019-2020 to find out the suitable fertilizer dose for lentil+mustard mixed cropping system in High Ganges Floodplain soil. The trial consisted of eight nutrient treatments such as T₁= MYG based on soil test, T₂= HYG based on soil test, T₃=IPNS with 5 t/ha for HYG, T₄=T₁ + 25% of T₁, T₅= T₂ + 25% of T₂, T₆=According to FRG 2012, T₇= Farmers practice, T₈= Native fertility (Control). The experiment was designed as a randomized complete block with three replications. For the mixed cropping system, 70% lentil + 30 % mustard seeds were sown. Results showed that the application of different nutrient management proved effective in significantly enhancing the yield attributes and seed yield of lentil and mustard mixed cropping systems in both years. During 2018-19 and 2019-2020, the maximum number pods per plant and seed yield of lentil and mustard were recorded from the treatment T₅ (T₂ + 25% of T₂) and T₃(IPNS with 5 t/ha for HYG ) which was significantly different with the others treatments but it was lowest in control treatment due to variation for nutrient supply. Maximum Lentil equivalent yield was found in treatment T₅ (HYG based on soil test + 25% of T₂) followed by treatment T₃(IPNS with 5 t/ha for HYG) in the year 2017-18 and 2018-19. Average of two years, regarding the cost and return analysis, the highest net return TK. 172000/ha was obtained from the treatment T₅. The highest benefit-cost ratios 3.89 and 3.70 were recorded from the treatment T₅ and T₃. Therefore, it may be concluded that treatment T₅ (35-50-62-40-3.75-1.25 kg N-P-K-S-Zn-B/ha) and T₃(30-28-42-30-3-1kg N-P-K-S-Zn-B/ha + 5-ton cowdung/ha) may be considered as economically profitable and optimum fertilizer dose for yield maximization of lentil+mustard mixed crop production in High Ganges River Floodplain soil (AEZ # 11

Keywords: Cropping system, Lentil, Fertilizer

Location:

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Farming System

Commodity: Farming System, Lentil

Objectives:

An experiment has been planned to find out the suitable fertilizer dose for the lentil+mustard mixed cropping system in High Ganges Floodplain soil (AEZ # 11).

Methodology:

The experiment was conducted at the research field of Pulses Research Centre, Regional Agriculture Research Station, Ishurdi, Pabna during 2018-19 and 2019-2020 to find out the suitable fertilizer dose for lentil+mustard mixed cropping system in High Ganges Floodplain soil (AEZ # 11). The initial soil samples were collected from the experimental plot from a depth of 0-15 cm and were analyzed in the laboratory following standard methods. Initial values of some important chemical parameters of the soil of the experimental field are presented in table 2.57. Chemical properties of post soil (0-5 cm depth) of the experimental field are shown in table 2.58. Soil pH, organic matter percentage and total N percentage were slightly increased after one crop cycle was completed. The trial consisted of eight nutrient treatments such as T₁= MYG based on soil test, T₂= HYG based on soil test, T₃=IPNS with 5 t/ha for HYG, T₄=T₁ + 25% of T₁, T₅=T₂ + 25% of T₂, T₆=According to FRG 2012, T₇= Farmers practice, T₈= Native fertility (Control). The experiment was designed a randomized complete block with three replications. The unit plot size was 4m×3m. Nutrients N-P-K-S-Zn-B were supplied from Urea, TSP, MP, Gypsum, Zinc sulphate and Boric acid, respectively. All the fertilizers were applied during the final land preparation. The variety was BARI Masur-8 for lentil and BARI Sharisha 14 for mustard. Lentil 70% + 30 % mustard seeds were sown on 25 November 2017 and 22 November 2018 maintaining a seed rate of 30 kg/ha for lentil and 1 kg/ha for mustard. Seeds of lentil and mustard were mixed and seeding with the broadcasting method. One irrigation was applied immediately after seed sowing. Intercultural operations such as thinning, weeding, applying insecticides were done as and when necessary. Mustard was harvested on 19-24 February 2019 and 12-16 February 2020, whereas lentil on 16 March 2019 and 12 March 2020. Data on seed yield were collected from the whole plot and stover data were counted from 2 square meters but all the yield components namely: plant height, branches/ plant, number of pods/plant, number of seeds /pod and 1000 seed weight were collected from ten plants selected randomly from each unit plot. Collected data were statistically analyzed through MSTAT-C package. Lentil equivalent yield (LEY) and economic analysis were calculated to ascertain the efficiency of intercropping. Lentil equivalent yield was calculated by converting the yield of mixed crops to the yield of lentil on the basis of prevailing market prices of individual crops. Lentil Equivalent Yield (LEY) was calculated. Lentil Equivalent Yield =Yield of mustard (Kg/ ha) x Price of mustard (Tk./ Kg). In this study, BCR was calculated for a hectare of land. Treatment-wise management cost was calculated by adding the cost incurred for labours and inputs for each treatment. The total yield after each harvest was calculated separately for every treatment and accumulated at the end of the final harvest. The total yield of each treatment was converted for determining yield (t/ha). This yield was utilized to calculate the gross return. This was measured by multiplying the total yield by the unit price of lentil at that time. Net return was calculated by subtracting management cost from gross return.

Source of Information: Annual Research Report 2019-2020, Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Different nutrient management showed a significant effect on the yield and yield components of lentil in 2018-19 and 2019-20. The plant height of lentil ranged from 32.-41.00 cm in 2018-19 and 52.25-86.49 cm in 2019-20. The highest plant height was recorded from treatment T₅ which was significantly higher over the other treatments that were statistically identical to treatment_,T₃and T₄in both the year. The significant increase in plant height with these treatments might be due to a higher amount of nutrients. Kundu et al. (2010) opined that an adequate supply of nutrients influenced the plant height. The highest number of branches per plant was recorded from treatment T₅. The lowest values were obtained from treatment T_8.(Control). The highest number of branches recorded might be due to the greater availability of nutrients. Babu et al. (2007) reported that the slow release of nutrients at later stages of crop growth had resulted in an increased number of branches. In the year 2018-19 and 2019-20. the maximum number of pods per plant was recorded from the treatment T₅ and T₃ which was significantly different from the other treatments, but statistically identical to T₂while it was lowest in T₈ treatment. This might be due to variations in nutrient supply. The highest number of seeds per pod was observed in T₁followed by T₃ and T₄and the lowest value in T₈treatment in both two years. Vishnoi et al. (2013) found that the number of seeds/pods was significantly influenced by organic and inorganic sources of nutrients. The seed yield of lentil was influenced significantly differ by different nutrient management practices in both years. Maximum seed yield was found in the treatment T₅and T_3.This was significantly higher than the other treatments. The lowest yield was recorded from the control treatment. This might be due to the that a higher amount of nutrients might have improved and developed a good root system of lentil plants and the capacity of roots to absorb more N, P and K. The yield of lentils decreased with the increasing mustard population in the mixed-cropped situation might be due to competition for nutrients and less light interception between the main and the intercrops. Lentil equivalent yield was calculated with a yield of mustard (kg/ ha) x Price of mustard (Tk./kg) then converted by lentil seed yield (Table 2.63). Maximum Lentil equivalent yield was found treatment T₅ (HYG based on soil test + 25% of T₂) followed by treatmentT₃(IPNS with 5 t/ha for HYG). Regarding the cost and return analysis, the highest net returns Tk. 137000/ha was obtained from the treatment T₅. The highest benefit-cost ratio of 3.98 was recorded from the treatment T₅. A similar result was reported by Mondal et al, (1995). The lowest net return was calculated from the control (T₁) treatment and the lowest benefit-cost ratio was counted from the control. From the result, it may be concluded that treatment T₅ (38-59-62-44-3.75-1.29 kg N-P-K-S-Zn-B/ha) and T₃(30-47-34-1-1 kg N-P-K-S-Zn-B/ha + 5-ton cowdung/ha) may be considered as economically profitable and optimum fertilizer dose for yield maximization of lentil+mustard mixed crop production in High Ganges River Floodplain soil (AEZ # 11).

Knowledge Management: Report/Proceedings