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Effect of Crop Establishment Practices and Ipns Based Nutrient Management on Vegetable Based Cropping System and Soil Physical Health (2019–2020)

M.J. Alam
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. K. Alam
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

A.T.M.A.I. Mondol
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

S. Akhter
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

Field experiments on Cabbage-Indian spinach-T.aman rice cropping pattern were conducted in Grey Terrace soil of Joydebpur under AEZ-28 during rabi 2019-2020 to investigate the performance of crops in vegetable-based triple crops cropping system under the crop establishment and organic fertilizer application practices and to study the soil health under crop establishment and organic dominant IPNS in the cropping system. There were 2 types of tillage as Strip tillage (ST) and conventional tillage (CT). In addition, 3 nutrient management practices such as 100% organic matter, IPNS and 100% chemical fertilizers in a split-plot design with 6 treatments and 3 replications. Conventional tillage gave a higher yield than strip tillage. IPNS package (60% chemical fertilizer with 40% organic fertilizer) significantly gave the highest marketable yield of cabbage than other nutrient management packages. Indian spinach was damaged due to a heavy shower at the early vegetative stage. The third crop T. aman is growing tillering stage.

Keywords: Soil health, Organic fertilizer, Nutrient management, Vegetable

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

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Crop-Soil-Water Management

Commodity: Soil Health, Fertilizer, Cropping System

Objectives:

1. To investigate the performance of crops in vegetable-based triple crops cropping system under the crop establishment and

2. Organic fertilizer application practices and to study the soil health under crop establishment and organic dominant IPNS in the cropping system.

Methodology:

Field experiments on Cabbage-Indian spinach-T.aman rice cropping pattern were conducted in Grey Terrace soil of Joydebpur under AEZ-28. The experiment was started at BARI central research farm during rabi season in 2019-2020. The tillage operations such as strip tillage with VMP (versatile multi-crop Planter) and conventional tillage with power tiller were employed in combination with three nutrient management practices 100% organic matter, IPNS (60% chemical fertilizer and 40% chemical fertilizers) and 100 chemical fertilizers). Thus 6 treatment combinations were arranged in a split-plot design with three replications. The plot size was 4.8 M × 3.15M. The tested variety was Atlas-70 and spacing was 60 cm × 45 cm. The crops were fertilized with soil test-based (STB) fertilizer dose as per FRG-2018 (BARC, 2018). The fertilizer doses were 38t ha^-1 decomposed cowdung for 100% OM treatment, N₁₁₆P₁₂K₃₁S₉Zn_0.7B_0.3 kg ha^-1 and 15t ha^-1decomposed cowdung for IPNS treatment andN₁₉₃ P₂₀ K₅₁ S₁₅Zn_01.2B_0.5kg ha^-1 for 100% chemical fertilizer treatment. Cabbage seedlings were transplanted on 03 December 2019 and the crop was harvested on 24 February 2020. All decomposed cowdung, phosphorus, gypsum zinc sulphate and boric acid were applied during final land preparation. Urea was applied in three equal splits at 7 DAT, 25 DAT 45 DAT. MoP was applied in three equal splits at Basal 20 DAT and 40 DAT. Basically, it was not possible to maintain strip-tillage during land preparation because there were five years of pattern crops and to make the field homogenous there given deep tillage with a tractor. After transplanting seedlings follow all the rules for strip tillage. Every split application of fertilizers was followed by irrigation. Another supplemental irrigation was applied at 55 DAS, while other intercultural operations were done as and when necessary. The collected soil samples were dried at room temperature mixed thoroughly, grinded, sieved with a 2 mm sieve and preserved in plastic containers for subsequent laboratory analysis. Soil samples were then analyzed for SOM, total N and P. The SOM was determined by wet oxidation (Jackson 1973), total N by a modified Kjeldahl method (page et al. 1989) and total P by using the SnCl₂ reduction method (Black, 1965).pH was determined through glass electrode pH meter method (Jackson 1962), K and S were determined through NH₄OAC method (Hanlon and Johnson,1984)and turbidimetric method (Sperber, 1984), respectively. Micronutrients were analyzed using atomic absorption spectrophotometer. The particle size distribution of the initial soil was analyzed by the hydrometer method (Black, 1965) and the textural class was determined using the USDA texture triangle. The BD of the soil samples was determined by the core sampler and pycnometer method (Karim et al., 1988). Moisture content was determined by the gravimetric method (Black, 1965). Field capacity was done through the pressure plate method.

Source of Information: Annual Research Report 2019–2020, Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Tillage with nutrient management practices contributed significantly to increase the marketable yield of cabbage under Cabbage- Indian spinach-T. aman cropping pattern. The second crop Indian spinach was damage due to a shower at the early vegetative stage. The third crop T. aman is going on with early tillering growth. This is the first-year study so that detailed study will be done after completion of the first cycle.

Knowledge Management: Report/Proceedings