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Effect of Integrated Nutrient Management on the Yield, Yield Attributes and Protein Content of Lentil

S Aktar
Scientific Officer
Pulse Research Sub-station, Bangladesh Agricultural Research Institute (BARI), Gazipur

MA Quddus
Senior Scientific Officer
Soil and Water Management Section, HRC, BARI, Gazipur

MA Hossain
Chief Scientific Officer
Soil Science Division, BARI, Gazipur

S Parvin
Senior Scientific Officer
TCRC, BARI, Gazipur

MN Sultana
Ex-Agricultural Development Officer
IRRI-Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the Pulse Research Sub-station of Bangladesh Agricultural Research Institute (BARI), Gazipur during rabi season of 2015-16 and 2016-17 to evaluate the effectiveness of organic and inorganic sources of nutrients in terms of growth and yield maximization of lentil. The experiment was laid out in a randomized complete block design (RCBD) having six treatments with three replications. The treatments were T₁= Recommended dose (N20P15K30S10Zn3B1.5 kg ha^-1), T₂= IPNS (Inorganic) +2.5 t ha^-1 cowdung, T₃= IPNS (Inorganic) +5 t ha^-1cowdung, T₄= IPNS (Inorganic) +1.5 t ha^-1 poultry manure, T₅= IPNS (Inorganic)+3 t ha^-1 poultry manure and T₆= Control. The results reveal that the integrated nutrient management had significant effects on the plant height, number of branches per plant, number of pods per plant, number of seeds per pod, 1000-seed weight, and seed yield of lentil. The maximum seed yield (1216 kg ha^-1) as well as protein content (26.1%) were recorded with T₄ treatment. The results advocate that satisfying the recommended dose through application of poultry manure @ 1.5 t ha^-1 with IPNS inorganic fertilizer could be suggested for achieving yield miximization of lentil in chhiata soil series of Gazipur.

Keywords: Integrated nutrient management, Yield attribute, Quality, Lentil

Location: Pulse Research sub- station, Bangladesh Agricultural Research Institute (BARI), Gazipur

Start Date: 00-00-2015

End Date: 00-00-2016

Program Area: Crop-Soil-Water Management

Commodity: Lentil, Fertilizer and manures

Objectives:

To evaluate the proper organic source and to determine the optimum dose of organic and inorganic sources of nutrients for achieving higher yield of lentil.

Methodology:

The field experiment was conducted at research field of Pulse Research sub- station, Bangladesh Agricultural Research Institute (BARI), Gazipur during rabi seasons of 2015-16 (1^st year) and 2016-17 (2^nd year). The land of Gazipur is medium high with fine-textured (clay loam) grey terrace soils. It belongs to Chhiata soil series under the agroecological zone - Madhupur Tract (AEZ-28). The experimental area received rainfall from 1.40 to 118 mm during October to March. The mean minimum and maximum air temperatures during October to March of the experiment were 21.4 & 28.6°C in the 1^st year and 20.3 & 29.0°C, respectively in the 2^nd year. The average minimum and maximum humidity (%) were 51 and 88 during October to March. The initial soil (0-15 cm) sample and all manure samples were analyzed as outlined by Page et al. (1982). Cowdung and poultry manure that used in the experiment were analysed by the standard methods. The land was prepared by a tractor operated chisel plough and then rotavator was used for breaking the clod and finaly the land was leveled by the leveler. The experiment was planned with six treatments such as T₁= Recommended dose (N20P15K30S10Zn3B1.5 kg ha^-1) as per FRG, (2012), T₂= IPNS (Inorganic) +2.5 t ha^- ¹ cowdung, T₃= IPNS (Inorganic) +5 t ha^-1 cowdung, T₄= IPNS (Inorganic) +1.5 t ha^-1 poultry manure, T₅= IPNS (Inorganic) +3 t ha^-1 poultry manure and T6= Control (no addition of fertilizer or manure). The treatments of the experiment were laid out in randomized complete block design (RCBD) with three replications. The unit plot size was 12 m² (4 m × 3 m). Nutrients N, P, K, S, Zn and B were applied as urea, TSP, MoP, gypsum, zinc sulphate (heptahydrate) and boric acid; respectively during final land preparation. The test crop variety was BARI Masur-7. Seeds were sown in the 3^rd week of November in both years at a rate of 35 kg ha^-1, sowing was done continuously in rows at a depth of 2-3 cm maintaining row to row spacing of 30 cm. The seeds were treated using the fungicide Provex 200 (at 2.5 g kg^-1 seeds) before sowing for controlling of root rot disease. Hand weeding as well as thining of seedlings was done at 25 days after sowing (DAS). Again, hand weeding was done at around 50 DAS.Two sprays were done with fungicide of Rovral starting from 55 DAS to control Stemphylium blight disease and two times insecticide (Karate @ 2 ml L^-1 of water) was sprayed at 10 days interval starting from 60 DAS to overcome insect infestation. The crop was harvested at maturity.

Data on the seed yield (kg ha^-1) at around 10% moisture basis were recorded from the whole plot technique. For straw yield (kg ha^-1), mature plants were collected from two 1m² quadrates in each plot at harvest time. Harvest index (%) was determined as a ratio of economic yield to biological yield (Zerihun et al., 2013). The data of yield attributes included plant height, number of branches plant^-1 and number of pods plant^-1 were recorded from ten plants selected randomly from each unit plot. Ten pods were detached randomly from ten plants and the number of seeds per pod was counted and averaged. Thousand seed weight (g) was determined by counting of 500 seeds randomly from each plot and weighing through electronic balance and converting it into 1000-seed weight. Five plants from each plot were chosen randomly at seedling, vegetative, flowering and pod formation stages for recording nodulation per plant. Plants were smoothly uprooted and the soil from roots was removed carefully using tap water. Nodules were separated and counted from each plant and averaged. Separated nodules were sliced into two pieces to observe the inside color for determining of nodule activity. The light-pink or red coloured nodules were considered as active. Seed samples were digested with di-acid mixture (HNO₃-HClO₄) (5: 1) as described by Piper (1966) for determination of N concentration (Micro-Kjeldahl method). Protein content in lentil seed was calculated by multiplying %N by a factor 5.30 (FAO, 2018). All the data of growth, yield attributing characters, number of nodules per plant and yield of lentil were statistically analyzed by ANOVA procedure. Then, multiple comparisons were done by LSD at 5% level (Statistix 10., 1985).

Source of Information: Bangladesh J. Agril. Res. 44(3): 525-536, September 2019

Article Link (Online Journal): DOI: https://doi.org/10.3329/bjar.v44i3.43483

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the two years study, the lentil performed better in T₄ {IPNS (Inorganic) +1.5 t ha^-1 poultry manure} treatment regarding to plant height, branches per plant, pod number, seed weight, nodule formation and protein yield. The highest seed yield was produced from the treatment of IPNS (Inorganic) + 1.5 t ha^-1 poultry manure (T₄). The results suggest that satisfying the recommended fertilizer dose through application of poultry manure @ 1.5 t ha^-1 with IPNS inorganic fertlizer could be suggested for achieving the maximum yield potential of lentil at chiata series soil of Gazipur.

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