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Site Specific Nutrient Management for Sugarcane-potato and Sugarcane-onion in Intercropping Systems

S. M. Bokhtiar
Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh

M. S. Hossain
Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh

K. Mahmud
Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh

G. C. Paul
Bangladesh Sugarcane Research Institute, Ishurdi-6620, Pabna, Bangladesh

Abstract/ Executive Summary:

Four field experiments were conducted under different Agro-ecological zones (AEZs) of Bangladesh at Ishurdi (AEZ 11), J amalpur (AEZ 9), Rajshahi (AEZ 11) and Thakurgaon (AEZ 1) in 2001-2002 cropping season. The main aims of the studies were to determine the fertilizer requirements on productivity of cane and intercrops (potato and onion) and their economics under sugarcane based cropping systems. Cane yield was enhanced when it was intercropped with potato and onion for the residual effect of applied fertilizer to intercrops. Net economic return was greater in cane intercropped with potato and onion over sole crop for all the experiments. Intercropping potato with sugarcane using FRG' 97 rates of fertilizer for cane (130 kg N, 35 kg P, 60 kg K, 20 kg S and 3 kg Zn ha^-I) and potato (50 kg N, 10 kg P and 20 kg K ha^-I) gave higher economic benefit at Ishurdi site. In Jamalpur site, sugarcane intercropped with potato following fertilizer rates based on BSRI' 98 for cane (150kg N, 42 kg P, 100 kg K, 30 kg Sand 2 kg Zn ha^-I) and potato (50 kg N, 10 kg P and 40 kg K ha^-I) gave the highest net profit But, the treatment received fertilizers as per FRG'97 showed higher economic benefit from sugarcane-onion intercropping systems both at Rajshahi and Thakurgaon sites.

Keywords: Sugarcane, Potato, Onion, Site-specific, Nutrient management

Location: Ishurdi, Jamalpur, Rajshahi and Thakurgaon sites of Bangladesh.

Start Date: 00-00-2001

End Date: 00-00-2002

Program Area: Farming System

Non-commodity: Intercropping

Objectives:

To determine the fertilizer requirement of sugarcane as well as intercrops potato and onion at different Agro-ecological zones (AEZs) of Bangladesh.

Methodology:

Four field experiments were conducted in 2001-2002 cropping season in different AEZs at Ishurdi, Jamalpur, Rajshahi and Thakurgaon sites of Bangladesh. Experiments were laid out in randomized complete block design with four replications. The unit plot size was 8x6m. The tested varieties of sugarcane were Isd 20, Isd 28 and Isd 29. Cardinal and Taherpuri variety were used as tested material for potato and onion, respectively. All the recommended cultural management practices were followed for sugarcane and intercrops when required. Full amount of TSP, gypsum, zinc sulphate, one third of urea and MP were applied as basal in the trenches and mixed thoroughly with soil. Rest amount of urea and MP were top dressed in two equal splits at 120 day after plantation (DAP) and at 180 DAP i.e. at tiller completion stage. For intercrops, half of urea and MP, full amounts ofTSP and gypsum were applied as basal doses. Remaining half of urea and MP were top-dressed after 45 DAP. Sunhemp as green manure crop was raised and incorporated in situ after 40±5 days of seed sowing. The incorporated green manure contained 1.65% N. Necessary data were recorded and analyzed using the least significant differences test (LSD) at P=0.05. Sugarcane crop was harvested 13 months after planting. The treatments deployed are as follows: For sugarcane-potato intercropping systems T_I - Recommended fertilizer dose for sole sugarcane following FRG'97 for MYG, T₂ - Fertilizer dose for sole sugarcane based on soil test value for HYG, T₃ - Fertilizer dose for sole cane as per BSRI recommendation' 98 for HYG, T₄ - Fertilizer dose for sugarcane + potato following FRG'97, T₅ - Fertilizer dose for sugarcane + potato following BSRI recommendation' 98, T₆ - Fertilizer dose for sugarcane + potato following BSRI'98+ Sunhemp For sugarcane-onion intercropping systems: This experiment also com prised of six treatments and received fertilizer similar to sugarcane-potato only the difference is intercrop, onion. FRG'97-Fertilizer Recommendation Guide' I 997; BSRI'98-Bangladesh Sugarcane Research Institute'1998; MYG-Moderate Yield Goal (80±10 t ha^-I) HYG- High Yield Goal (1 00±1O t ha^-I).

Source of Information: Asian Journal of Plant Sciences 2 (17-24): 1205-1208, 2003; ISSN 1682-3974

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It is concluded that intercropping potato with sugarcane using FRG'97 rates of fertilizer for cane and potato gave higher economic benefit at Ishurdi site. Sugarcane intercropped with potato following BSRI'98 rates of fertilizer for cane and potato gave higher net profit at Jamalpur site. Application of fertilizers as per FRG'97 showed higher economic benefit from sugarcane-onion inter cropping systems both at Rajshahi and Thakurgaon sites.

Knowledge Management: Journal