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Growth and Yield of Papaya Subjected to Nutrient Deprivation

M.O. Kaisar
Senior Scientific Officer
Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

N. Ara
Principal Scientific Officer
Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

M.A. Sadat
Scientific Officer
Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

K.M. Khalequzzaman
Senior Scientific Officer
Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

Abstract/ Executive Summary:

In order to evaluate nutritional requirements and the effect of nutrient deprivation on the growth and yield of papaya, an experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna during the growing season of 2008. The experiment included one complete treatment (provided N, P, K, S, Mg, B, Mo and Zn), besides deprivation of each nutrient (-N, -P, -K, -S, -Mg, -B, -Mo and -Zn), and one absolute control treatment (natural soil). Papaya has high nutritional requirements, and nutrients N, P, K, S, B and Mo, in that order, were found to be limiting factors to plant growth. Mg and Zn deprivation did not affect plant growth. B, N, P, Mo, S and K are essential to obtain higher yield in papaya.

Keywords: Missing element, Soil fertility, Nutritional deficiency, Papaya

Location: Regional Agricultural Research Station, BARI, Ishurdi, Pabna, Bangladesh

Start Date: 00-05-2008

End Date: 00-05-2009

Program Area: Crop-Soil-Water Management

Commodity: Papaya

Objectives:

To measure the extent of each nutrient exclusion effect and simultaneously their application in soil to increase the yield of papaya

Methodology:

The missing element technique experiment was conducted at the Regional Agricultural Research Station, Ishurdi, Pabna during the growing season 2008 with 10 treatment combinations (N, P, K, S, Mg, B, Mo and Zn as complete treatment, omission of one nutrient from complete nutrient i.e., -N, -P, -K, -S, -Mg, -B, -Mo and -Zn, including one absolute control treatment). The local papaya was used as planting material in this study. The experiment was laid out in RCB design with three replications. The unit plot size was 4 m × 4 m and the seedlings were planted at a spacing of 2 m × 2 m. The 30 days old seedlings were transplanted in the main plot. The beds were prepared and pits measuring 50 × 50 × 50 cm were dug. Fertilizer was applied at the rate of 225, 60, 225, 36, 0.4, 0.2 and 2.5 g/pit of N, P, K, S, Mg, B, Mo and Zn, respectively. Cowdung was used at the rate of 1/2 kg/pit. Whole amount of cowdung and fertilizers except urea and MOP were applied to each pit and mixed with the soil. Planting was done on May 03, 2008. Three seedlings were transplanted in each pit at 20 cm apart. There were 4 pits in each bed which constituted one treatment. When flower was appeared to the plants kept one female plant in each pit and one male plant in each bed were maintained. First top dressing of urea and MOP @ 50 g per pit was applied one month after transplanting, the second and third at 45 days interval was followed with the same dose. At 4^th, 5^th and 6^th top dressing the dose of urea and MOP was double. The intercultural operations (weeding, irrigation, mulching, insecticide spray etc.) were done as and when necessary. Data on plant height, base girth, days to 1^st flowering, days to 1^st harvest, number of fruits per plant, fruit length and breadth, single fruit weight, flesh thickness, TSS% and yield per plant were recorded and statistically analyzed.

Source of Information: Int. J. Sustain. Crop Prod. 8(1):25-27, (2013)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Response of macro- and micro-nutrient in yield of papaya was predominant. Absence of those elements in Ishurdi soil each reduced substantial amount of yield. N, P, K, S, B and Mo, in that order, were found to be limiting factors to plant growth. Mg and Zn deprivation did not affect plant growth. B, N, P, Mo, S and K are essential to obtain higher yield in papaya. The study also highlights the importance of complete or balance fertilization for maximizing yield of papaya.

Knowledge Management: Journal