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Effect of Different Levels of Phosphorus and Their Integration with Manures on Different Crops in the Lentil-mungbean-t.aman Rice Cropping Pattern (2019--2020)

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

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

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

F. FOUF
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

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

Abstract/ Executive Summary:

An experiment was conducted at the research field of Pulses Research Centre, Regional Agriculture Research Station, Ishurdi, Pabna during 2018-19 and 2019-2020 to determine the optimum rates of phosphorus for lentil-mungbean-T.aman rice cropping pattern and to reduce the rate of P fertilizer application by the inclusion of cowdung and poultry manure. There were 8 treatments viz T₁=P₀, T₂= P16 kg/ha, T₃=P 32 kg/ha, T₄=P 48 kg/ha, T₅=P 16 kg/ha+Cowdung5 t/ha, T₆=P 16 kg/ha + Poultry manure 3 t/ha, T₇= P 32 kg/ha + Cowdung 5 t/ha, T₈= P 32 kg/ha +Poultry manure 3 t/ha. The experiment was designed as a randomized complete block with three replications. The result showed that application of different level of P and manures proved effective in significantly enhancing the nodulation, yield attributes and seed yield of lentil during both the year. The tallest plant, number of branches and maximum number of pods per plant were recorded from the P fertilizer with cowdung and poultry manure treatments. Seed yield of lentil was significantly influenced by organic and inorganic sources of phosphorus during 2018-19 and 2019-2020. Maximum seed yield was found in the treatment T₅and T₆(P fertilizer with manure). This was significantly higher than the other treatments. The maximum numbers of nodules were recorded from the treatment T₈ (P 32 kg/ha with 3 t/ha poultry manure) in all the nodules collection dates which was significantly higher over the other treatment in both years. The lowest nodule values were obtained from the P control treatment. Average of two years, maximum net return TK. 180000/ha was obtained from the treatment T₆(P 16 kg/ha with 3 t/ha poultry manure). The highest benefit-cost ratio 3.89 and 4.42 were recorded from the treatment T₅ and T₆(P fertilizer with manure). Therefore, it may be concluded that 16 kg/ha phosphorus fertilizer along with cowdung 5 t/ha or poultry manure 3 t/ha with a blanket dose of N₂₀K₂₀S₁₀ Zn₂ B₁ kg/ha may be considered as economically sound and optimum fertilizer dose for yield maximization of lentil production in High Ganges River Floodplain soil under lentil-mungbean-T.aman rice cropping pattern.

Keywords: Cropping pattern, Lentil, Fertilizer

Location: Pulses Research Centre, Regional Agriculture Research Station, Ishurdi, Pabna

Start Date: 00-00-2018

End Date: 00-00-2020

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Mungbean, Cropping pattern

Objectives:

The present study has been designed to determine the optimum rates of P and manures for lentil-mungbean-T.aman rice cropping pattern.

Methodology:

An experiment was conducted at the research field of Pulses Research Centre, Regional Agriculture Research Station, Ishurdi, Pabna during 2018-19 and 2019-20 to determine the optimum rates of phosphorus by the inclusion of manures for lentil-mungbean-T.aman rice cropping pattern and to reduce the rate of P fertilizer application by the inclusion of cowdung and poultry manure. 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 soil of the experimental field are presented in table 2.47. The nutrient status of cowdung and poultry manure applied in the experimental plots is shown in Table 2.48. The trial consisted of eight nutrient treatments such as T₁=P₀, T₂= P16 kg/ha, T₃=P 32 kg/ha, T₄=P 48 kg/ha, T₅=P 16 kg/ha + Cowdung 5 t/ha, T₆=P 16 kg/ha + Poultry manure 3 t/ha, T₇= P 32 kg/ha + Cowdung 5 t/ha, T₈= P 32 kg/ha +Poultry manure 3 t/ha along with the blanket dose of N₂₀K₂₀S₁₀ Zn ₂ B₁ kg/ha. 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 was 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. Seeds were sown on 20 November 2018 and 18 November 2019 at a rate of 30 kg/ha continuous in line at a depth of 2 to 3 cm below the soil surface. One irrigation was applied immediately after seed sowing. Intercultural operations such as thinning, weeding, applying insecticides were done as and when necessary. The mature plants of lentil were harvested on 10 March 2019 and 14 March, 20 respectively. Data on grain 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. Chemical properties of post soil (0-5 cm depth) of the experimental field Soil pH, organic matter percentage and total N percentage were slightly increased after one crop cycle was completed. 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 the gross return

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

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The effect of P fertilizers in combination with cowdung and poultry manure influenced the growth and yield of lentil. Application of different levels of P and manures proved effective in significantly enhancing the nodulation, yield attributes and seed yield of lentil. Result reveals that 16 kg/ha P fertilizer along with Cowdung 5 t/ha or poultry manure 3 t/ha with a blanket dose of N₂₀K₂₀S₁₀ Zn ₂ B₁ kg/ha may be optimum fertilizer dose for yield maximization of lentil production in calcareous soil under lentil-mungbean-T.aman rice cropping pattern. Lentil was the first crop in this pattern. After completion of the pattern, a concrete conclusion may be drawn. Regarding the cost and return analysis average of two years (2018-19 & 2019-20) the highest net return Tk. 175000/ha was obtained from the treatment T₆. The highest benefit-cost ratio was recorded from the treatment T₆ (4.42). The lowest net return and the benefit-cost ratio were found in (T₁) treatment (P control).

Knowledge Management: Report/Proceedings