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Effect of Npk Fertilizers on Growth, Yield and Yield Attributes of Okra (abelmoschus Esculentus (l.) Moench.)

M A RAHMAN
Department of Botany, University of Chittagong, Chittagong

FERDOUSI AKTER
Department of Botany, University of Chittagong, Chittagong

Abstract/ Executive Summary:

Five different doses of NPK fertilizers, viz. T_o (0N0P0K), T₁ (1N1P1K), T₂ (0N1P1K), T₃ (1N0P1K) and T₄(1N1P0K) were applied and the growth, yield and yield attributes of okra were studied. The length of main stem, number of nodes and leaves were maximum at T₁. The fresh weight, length, circumference, diameter per fruit and yield per plant were the highest at T₁. The carotenoid content of leaves and vitamin C contents of fruits were maximum at T₁_. The total NPK concentration of both plants and fruits were the highest at T₃_.

Keywords: Okra, NPK fertilizers, Growth, Yield

Location:

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Okra

Objectives:

The present investigation the effect of different doses of NPK fertilizers on growth, yield and yield attributes of okra was studied.

Methodology:

Seeds of okra (Abelmoschus esculentus (L.) Moench.) var. ARKA ANAMIKA were collected from local nursery and sown in the experimental field. The field was ploughed, cross ploughed and leveled properly and divided into 15 plots, each measuring 2 × 1 m with 50 cm space between two plots. Each plot contained three rows and every row contained four hills. The spacing between row to row and hill to hill was 60 cm and 45 cm, respectively. The field design was maintained triplicated Randomized Complete Block Design (RCBD). Different doses of fertilizers applied per plot are as follows: T₀ (N₀P₀K₀) - two kg cow-dung were applied during land preparation. T₁ (1N1P1K) - (a) 2 kg cow-dung, 65 g urea, 150 g TSP and 105 g MP were applied during land preparation, (b) 65 g urea were applied after 25 days of sowing. T₂ (0N₁P₁K) - 2 kg cow-dung, 150 g TSP and 105 g MP were applied during land preparation, T₃ (1N0P1K) - (a) 2 kg cow-dung, 65 g urea and 105 g MP were applied during land preparation, (b) 65 g urea were applied after 25 days of sowing. T₄ (1N1P0K) - (a) 2 kg cow-dung, 65 g urea and 150 g TSP were applied during land preparation, (b) 65 g urea were applied after 25 days of sowing. The plants were finally harvested after five months of sowing. After harvesting the fresh weight of whole plant (stem and leaf ) was weighed. Then the plants were chopped and dried in an oven at 65°C till a constant dry weight was obtained. For chemical analysis 100 g of fresh plant (stem and leaf) and fruit samples were dried in an oven at 65°C. Then ground in an electric grinder and made into powder (60 meshed sieves) and stored in air-tight containers. Dried powder of plant and fruit samples was digested following modified micro-Kjeldahl method. N, P and K were determined as described by Jackson (1973). Chlorophyll a, b and carotenoid contents of fresh leaves of okra at the onset of flowering were determined spectrophotometically and calculated following Wettstein (1957). Vitamin C of fresh fruit sample was determined following Pleshkov (1976).

Source of Information: Bangladesh J. Bot. 41(2): 131-134, 2012 (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the above discussion it may be concluded that the growth, yield and yield attributes of okra were highest in T₁where balanced dose of NPK fertilizers was applied. So, T₁ may be recommended for the growers for better yield of okra.

Knowledge Management: Journal