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Effect of Tillage Methods and Conventional Compost Formulated Ipns Package on the Productivity of Radish-pea-okra-t. Aman Rice Cropping Pattern and Sustainability of Soil Health (2015-2016)

N. C. SHIL
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

S. MONDAL
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

M. JAHANGIR ALAM
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

M. J. Alam
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

A. T. M. A. I. MONDOL
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

R. A. BEGUM
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at Central Research Farm at Gazipur (AEZ-28) and at RARS, Jessore (AEZ-11) during rabi 2014-2015 and 2015-2016. The objectives were to find out the suitable dose of compost and chemical fertilizers for maximizing the yield of Radish-Pea-Okra-T. Aman rice pattern and to know the effect of tillage methods and compost-based IPNS package on the improvement of soil health. Three were three tillage methods, such as T₁= Minimum tillage, T₂= Conventional tillage and T₃= Deep tillage: and four nutrient management practices viz. NM₁= 100% STB as per FRG, 2012 all from chemical fertilizer, NM₂= 125% STB all from chemical fertilizer NM₃: NM₁(75% from chemical fertilizer + 25% from compost) NM₄: Native fertility. The experiment was set up in two factors Randomized Complete Block Design with 12 treatments and 3 replications. The highest root yield (23.5 and 20.0 t ha^-1) of radish and pod of garden pea (1.86 and 4.54 t ha^-1) was recorded from deep tillage, which was significantly higher over conventional tillage and minimum tillage (4-6 cm depth). The next 2 crops of the pattern okra and T. Aman rice did not respond significantly to tillage depth. All 4 crops of the pattern responded significantly to nutrient management packages where the highest yield was recorded either from 125% STB dose or NM₃ (IPNS based dose). It was found that 25% increased fertilizer dose over present recommendations (FRG, 2012) is required for maximizing the yield. But IPNS approach formulated preferably with conventional compost having 75: 25 inorganic: organic ratio may save the requirement of 25% chemical fertilizer without yield reduction. Deep tillage produced a higher yield, which was almost similar to conventional tillage when it combined with compost formulated IPNS package. Radish equivalent yield (REY) varied from 23.31 to 61.02 t ha^-1 at Joydebpur and 35.80 to 68.73 t ha^-1 at Jessore where the highest REY was observed from T₃ x M₂ which was closely followed by T₃ x M₃ and the lowest in T₁ x M₄. The experiment is in progress with the second cycle where the seventh crop, okra is in the fruit setting stage till the preparation of the present report.

Keywords: Compost, Chemical fertilizers, Tillage methods, IPNS package, Soil health

Location: Central Research Farm, Gazipur and Regional Agricultural Research Station’s farm, Jessore, Bangladesh

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Crop-Soil-Water Management

Commodity: Soil Health, Cropping pattern

Objectives:

i) To find out the suitable dose of compost and chemical fertilizers for maximizing the yield of the pattern (ii) To know the effect tillage methods and compost based IPNS package on the improvement of soil health.

Methodology:

The study was conducted at Central Research Farm, Gazipur (AEZ-28) and Regional Agricultural Research Station’s farm (AEZ-11), Jessore during the rabi (winter) season, 2014-2015. Radish was the first crop in this season. The treatments comprised three different tillage options viz., (i) Minimum tillage (MT) and (ii) Conventional tillage (CT) and (iii) Deep tillage (DT) in combination with four types of nutrient management package viz., NM₁= 100% STB based on (FRG, 2012) all from chemical fertilizer, NM₂ = 125% STB (FRG, 2012) all from chemical fertilizer, NM₃= NM₁(75% from chemical fertilizer + 25% from compost) NM₄= Native fertility. The plot size was 4m x 3m. The experiment was set up in a 2 factor Randomized Completely Block Design with 3 replications. The physical and chemical properties of initial soil for Gazipur and Jessore are presented in Table 1 and Table 2. The 100% STB dose for Radish and pea at Jessore was N₁₆₀P₃₀K₇₆S₁₈Zn_2.7B₁kg ha^-1 and N₅₂P₁₆K₁₉S₉ kg ha^-1, respectively. Such dose for Gazipur was N₁₆₆P₂₁K₁₀₀S₁₉Zn₃B₁kg ha^-1for Radish and N₅₅P₁₂K₂₂S₉ kg ha^-1for garden pea. The dose of compost was 8.3 and 2.6 t ha^-1 for radish and pea, respectively. Radish at Jessore was sown on 11 November 2014 and harvested on 29 December. The garden pea was sown on 31 December and harvested on 03 March 2015. While at Gazipur the radish was sown on 26 November and harvesting ended on 6 January. The garden pea is sown on 7 January and harvest on 12 March 2015. The 100% STB fertilizer dose for okra was N₁₀₀P₁₈K₄₉S₁₂Zn_1.75B_0.6 kg ha^-1 at Gazipur and N₉₆P₂₀K₃₈S₁₁Zn_1.8B_1..3 kg ha^-1 for Jessore. The requirement of compost for both the location was 11.0 t ha^-1. Again, the 100% STB fertilizer dose for T. Aman was N₁₀₀P₆K₄₉S₉Zn_1.23kg ha^-1 at Gazipur and N₉₇P₁₁K₃₈S₁₀Zn_1.3 kg ha^-1 at Jessore. Okra seeds were sown on 20 and 10 March 2015 at Gazipur and Jessore, respectively. The harvesting was started at Gazipur on 17 May and at Jessore on 10 May of the same year. After the harvest of okra, the fourth crop T. Aman rice (BRRI Dhan 57) was transplanted at Gazipur on 07 August 2015 and 8 August at Jessore. The crop was harvest on 20 November at Gazipur and 16 November at Jessore at its full maturity. The yield and yield component data were recorded and analyzed statistically.

Source of Information: Annual Research Report 2015-2016, Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The studied vegetable-based cropping pattern Radish-Pea-Okra-T. Aman rice appeared as productive in the studied locations, Grey Trace Soil at Joydebpur under AEZ-28 and Calcareous Floodplain Soil at Jessore under AEZ-11. Freshly prepared conventional compost formulated IPNS package (NM₃) produced luxuriant growth of vegetable crops and gave identical yield with 125% STB dose. Deep tillage produced a higher yield, which was almost similar to conventional tillage when it combined with compost formulated IPNS package. Economic performance, nutrient input, output balance and consequence of soil fertility would be included when the third cycle of the pattern would be completed. The experiment is in progress with the second cycle where the seventh crop, okra is in the fruit setting stage till the preparation of the present report.

Knowledge Management: Report/Proceedings