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Development of Fertilizer Recommendation for Cauliflower with Maize Intercropping System (2018–2019)

R. Sen
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. M. Masud
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 BARI Central Research Station, Gazipur during the rabi season of 2018-2019. The experiment was set up with nine treatments viz. T₁(100% RDCF of Maize + 0% RDCF of Cauliflower), T₂(100% RDCF of Maize + 10% RDCF of Cauliflower), T₃ (100% RDCF of Maize + 20% RDCF of Cauliflower), T₄ (100% RDCF of Maize + 30% RDCF of Cauliflower), T₅(100% RDCF of Maize + 40% RDCF of Cauliflower), T₆(100% RDCF of Maize + 50% RDCF of Cauliflower), T₇(100% RDCF of Maize + 60% RDCF of Cauliflower), T₈ [Sole Maize (100% RDCF of Maize with recommended spacing)] and T₉ [Sole Cauliflower (100% RDCF of Cauliflower with recommended spacing)]. Both maize and cauliflower significantly influenced by different treatments. Average highest total system (maize) yield of 27.89 t ha^-1 was obtained from the T₇treatment (100% RDCF of Maize + 60% RDCF of Cauliflower). The economic analysis revealed that the highest BCR of 4.56 was obtained from T₆treatment (100% RDCF of Maize + 50% RDCF of Cauliflower). BCR in sole maize and sole cauliflower were 2.62 and 4.49, respectively. Nitrogen, potassium and sulpher balance were found negative whereas phosphorus balance was found positive in all the treatments.

Keywords: Fertilizer, Cauliflower, Maize

Location: Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, Maize, Cauliflower

Objectives:

The objective to develop a fertilizer recommendation of mazie with cauliflower intercropping system.

Methodology:

An experiment was conducted on BARI Central Research Station, Gazipur during the rabi season of 2018-2019. The experiment confined with intercropping where maize was sown as the main crop and cauliflower was transplanted as a companion crop. The variety for Maize was BARI Hybrid Maize-9 and for cauliflower was Snow white. The initial soil samples at a depth of 0-15 cm from the experimental fields were collected and analyzed following standard methods. The experiment was laid out in a randomized complete block design with nine treatments replicated three times. The unit plot size was 4.5m x 3.0m. Maize was sown 75 cm line to line and 20 cm plant to plant. Equal-sized healthy thirty days old seedlings of cauliflower were transplanted on December 2 at Gazipur 2018. After 30 days of cauliflower seedlings transplanting, maize was sown in between cauliflower rows. The experiment was set up with nine treatments viz. T₁(100% RDCF of Maize + 0% RDCF of Cauliflower), T₂(100% RDCF of Maize + 10% RDCF of Cauliflower), T₃ (100% RDCF of Maize + 20% RDCF of Cauliflower), T₄ (100% RDCF of Maize + 30% RDCF of Cauliflower), T₅(100% RDCF of Maize + 40% RDCF of Cauliflower), T₆(100% RDCF of Maize + 50% RDCF of Cauliflower), T₇(100% RDCF of Maize + 60% RDCF of Cauliflower), T₈ [Sole Maize (100% RDCF of Maize with recommended spacing)] and T₉ [Sole Cauliflower (100% RDCF of Cauliflower with recommended spacing)]. Recommended dose of chemical fertilizer (RDCF) for Maize = N₂₅₅P₆₀K₁₁₀S₄₀Zn₄B_1.4kg ha^-1 and for Cauliflower= N₁₅₀P₄₅K₇₀S₂₀Zn₂B₁kg ha^-1+ 5 t CD ha^-1. Urea, TSP, MoP, gypsum and boric acid were used as a source of N, P, K, S and B, respectively. All P, K, S, B and ¹/₃ N were applied at the time of final land preparation and the remaining ²/₃ N was applied in two equal installments at 45 and 75 days after transplanting. All the intercultural operations such as irrigation, weeding, insect control etc. were done as and when necessary. Harvesting of cauliflower was done in February and maize was done in April 2019. Ten plants from each plot were tagged at random to take records on different agronomic parameters of maize and cauliflower. Data on growth, yield and yield contributing parameters were recorded and statistically analyzed with the help of statistical package CropStat and mean separation was tested by Least Significance Difference (LSD) (Steel and Torrie, 1960). Post-harvest soil and plant samples were also collected and analyzed. Soil pH was measured by a combined glass calomel electrode (Jakson, 1958). Organic carbon was determined by the wet oxidation method (Walkley and Black, 1934). Total N was determined by the 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 the CaCl₂ extraction method. Phosphorus was determined by Bray and Kurtz method (Acid soils). S was determined by CaH₄(PO₄)₂.H₂O extraction followed by the turbidimeter method with BaCl_2.

Source of Information: Annual Research Report 2018–2019, Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Finally, results revealed that T₆ treatment (100% RDCF of maize + 50% RDCF of cauliflower) was found best for cauliflower with maize intercropping. The highest benefit-cost ratio was obtained from the T₆ (100% RDCF of Maize + 50% RDCF of Cauliflower) treatment. This is the report of the first-year experiment. The experiment needs to be carried out for the next year for confirmation of the result.

Knowledge Management: Report/Proceedings