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Development of Fertilizer Recommendation for Garlic with Chilli Intercropping System (2018-19)

I.S.M. FARHAD
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M.M.U. CHOWDHURY
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

A. BARMAN
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:

An experiment was conducted at Central Research Farm, BARI, Gazipur and On Farm Research Division, BARI, Noakhali during the Rabi season of 2017-2018 to develop a fertilizer recommendation for chilli with garlic intercropping system. Six treatment combinations viz. T₁= 100% RDCF of chilli + 0% RDCF of garlic, T₂= 100% RDCF of chilli + 10% RDCF of garlic, T₃= 100% RDCF of chilli + 20% RDCF of garlic, T₄= 100% RDCF of chilli + 30% RDCF of garlic, T₅= 100% RDCF of chilli + 40% RDCF of garlic and T₆= 100% RDCF of chilli + 50% RDCF of garlic were tested. The experiment was laid out in randomized complete block design with 3 replications. Both chilli and garlic significantly influenced by different treatment combinations. Significantly highest yield of chilli (10.12 and 9.10 t ha^-1 at Gazipur and Noakhali, respectively) and garlic (3.70 and 3.55 t ha^-1 at Gazipur and Noakhali, respectively) were obtained from T₆ treatment (100% RDCF of chilli +50% RDCF of garlic) which were statistically similar with T₅ treatment (100% RDCF of chilli +40% RDCF of garlic). Chilli equivalent yield progressively increases with the increase of inorganic fertilizers. The results showed that T₆provided the highest CEY (17.52 and 16.18 t ha^-1 at Gazipur and Noakhali, respectively) followed by T₅(17.47 and 16.14 t ha^-1 at Gazipur and Noakhali, respectively). The highest net return (339755 Tk. ha^-1 and 310198 Tk. ha^-1 at Gazipur and Noakhali, respectively) as well as BCR (4.50 and 4.32 at Gazipur and Noakhali, respectively ) were obtained from T₅ treatment (100% RDCF of chilli + 40% RDCF of garlic) while the lowest net return (266661 Tk. ha^-1and 242264 Tk. ha^-1 at Gazipur and Noakhali, respectively) as well as BCR (3.92 and 3.76 at Gazipur and Noakhali, respectively ) were observed from T₁treatment (100% RDCF of chilli + 0% RDCF of garlic).

Keywords: Frtilizer recommendation, Gerliic, Chilli, Intercropping

Location: Central Research Farm, BARI, Joydebpur and OFRD, BARI Noakhali

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Garlic, Chilli, Fertilizer

Objectives:

To develop a fertilizer recommendation for chilli with garlic intercropping system.

Methodology:

A field experiment was conducted at Central Research Farm, BARI, Gazipur (AEZ-28) and On Farm Research Division, BARI, Noakhali (AEZ-18) during Rabi season of 2017-2018. The experiment confined with intercropping where chilli was transplanted as main crop and garlic was sown as companion crop. The variety of chilli was BARI Morich-3 and Local in Gazipur and Noakhali, respectively. The variety of garlic was BARI Garlic-2 in both the location. Before conducting the experiment, initial composite soil samples at a depth of 0-15 cm from the experimental plots were collected and analyzed following standard methods and recorded.The experiment was laid out in a randomized complete block design with three replicates. The unit plot size was 4.0 m ´ 3.0 m. Chilli transplantation and garlic cloves dibbling were done on November 28, 2017 at Gazipur and December 12, 2017 at Noakhali. One row of garlic was sown in between two rows of chilli. Line to line spacing of chilli was 40 cm and chilli to garlic spacing was 20 cm. Plant to plant spacing of chilli and garlic was 40 cm and 10 cm, respectively. The experiment was set up with six treatments viz. T₁= 100% RDCF of chilli + 0% RDCF of garlic, T₂= 100% RDCF of chilli + 10% RDCF of garlic, T₃= 100% RDCF of chilli + 20% RDCF of garlic,T₄= 100% RDCF of chilli + 30% RDCF of garlic,T₅= 100% RDCF of chilli + 40% RDCF of garlic and T₆= 100% RDCF of chilli + 50% RDCF of garlic. Recommended fertilizer dose was estimated based on the soil test value. At Gazipur, recommended dose of chemical fertilizer (RDCF) for chilli was N_99.5P_32.6K₆₄S_9.5Zn_0.2B_0.9kg ha^-1 and garlic was N₁₁₈P_27.5K₆₀S₂₈Zn_0.5B_2.8kg ha^-1whereas the recommended doses of chemical fertilizer for chilli and garlic were N₁₀₄P₅₂ K₈₉S_1.4kg ha^-1 and N₁₂₇ P₄₄ K_83.6S₄B_0.7Kg ha^-1, respectively at Noakhali. The whole amounts of P, S, Zn, B and 1/4th of K will be applied at the time of final land preparation. Remaining K and whole amounts of N will be applied in three equal installments at 25, 50 and 75 days after transplantation from 10-12 cm away from the base of the plant which will be beneficial for the growth and yield of garlic. Cowdung (5 t ha^-1) were applied as a basal in all the plots. All the intercultural operations such as irrigation, weeding, insect control etc. were done as and when necessary. At Noakhali, Soil salinity level was measured by using Electrical Conductivity meter Adwa (AD 310) at 15 days interval from emergence to maturity stages of the crop. Salinity level was 1.12 to 9.75 dS m^-1 over the whole growing period. Soil salinity gradually increased up to 2^nd week of April and then declined due to heavy rainfall at the later stages of the crop growing period. Chilli was harvested five times at 15 days interval starting from 19 March, 2018 at Gazipur and 30 March,2018 at Noakhali . Garlic was harvested in its maturity on 4 April and 15 April of 2018 at Gazipur and Noakhali, respectively. Ten plants from each plot were tagged at random to take records on different agronomic parameters of chilli and garlic. Data on yield and yield contributing parameters were recorded and statistically analyzed with the help of statistical package statistix 10 (Analytical Software. Tallahassee, Fla, USA) and mean separation was tested by Duncan’s Multiple Range Test (DMRT). Methods of chemical analysis: Soil pH was measured by a combined glass calomel electrode (Jackson, 1958). Organic carbon determination by wet oxidation method (Walkley and Black, 1934). Total N was determined by modified Kjeldahl method. Ca and Mg were determined by NH₄OAc extraction method. K, Cu, Fe, Mn and Zn were determined by DTPA extraction followed by AAS reading. Boron was determined by CaCl₂ extraction method. Phosphorus was determined by Bray and Kurtz method (Acid soils) and Modified Olsen method (Neutral + Calcareous soils). S was determined by CaH₄(PO₄)₂.H₂O extraction followed by turbidimetric method with BaCl_2.

Source of Information: Annual Report 2018-2019, BARI. Gazipur, Bamngladesh

Article Link (Online Journal):

Funding Source:

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Total Budget (Tk.) :

Achievement/Findings:

From the present study, it may be concluded that treatment package consists of 100% RDCF of chilli along with 40% RDCF of garlic is most profitable for chilli with garlic intercropping system in the study area (AEZ-28 & 18). This is the results of 1^st year study, so further investigation will be required for the confirmation of the findings.

Knowledge Management: Report/Proceedings