Effect of different organic manures and fertilizers on growth and yield of knol-khol (Brassica oleracea var. gongylodes L.)

Md Anichhul Islam,Nubayra Tasnim Shuvra,Md Hasibur Rahaman Hera,Md Yamin Kabir,Md Amirul Islam

doi:10.2478/mjhr-2020-0010

Md Anichhul Islam, Nubayra Tasnim Shuvra + Show 3 more

Open Access

https://doi.org/10.2478/mjhr-2020-0010

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Abstract

Abstract A field experiment was carried out to investigate the effect of different manures and fertilizers on the growth and yield of knol-khol (Brassica oleracea var. gongylodes) at Dr. Purnendu Gain Field Laboratory of Agrotechnology Discipline, Khulna University, Khulna from November 2014 to February 2015. The single factor experiment comprised of different types of fertilizers and manures viz., T0 (Control), T1 (Recommended doses of NPK), T2 (Cow dung), T3 (Vermicompost), T4 (Poultry manure), T5 (50 % Cow dung + 50 % NPK), T6 (50% Vermicompost + 50% Cow dung), T7 (50% Vermicompost + 50 % Poultry manure) and T8 (25% Cow dung+ 25% Vermicompost+ 25% Poultry manure + 25% NPK). The Experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. The maximum plant height was obtained from the treatment T1 at 25, 35 and 45 Days after transplanting (DAT). The maximum spread of canopy was 36.75 cm, 52.50 cm and 66.05 cm from the treatment T3, T7 and T2, respectively. The maximum economic yield (21.92 t/ha) and biological yield (40.083 t/ha) were found in the treatment T1 and T7, respectively. Highest benefit cost ratio (3.07) was obtained from the treatment T1whilethe minimum (0.57) was obtained from T3 which indicates that high cost of vermicompost affect net return severely. Although, T1 produced maximum benefit cost ratio, the treatment T4 and T2 are very close to T1 and also statistically similar. So, we can consider poultry manure and cow dung for our soil health, environmental benefits and ecological safety.

Highlights

Knol-khol (Brassica oleracea var. gongylodes L.) belongs to the family Brassicaceae that is the German name for cabbage turnip, called kohlrabi, which resembles an above ground turnip originated in the coastal countries of Western Europe [1]
3.0 Results and Discussion The present study was conducted to investigate the effects of different organic manures and fertilizer management practices on the growth and yield of knol-khol
Plant height The variation in plant height due to different manures and fertilizers was statistically significant in Knol-khol at 25, 35 and 45 days after transplanting (Figure 1)

Summary

Introduction

Knol-khol (Brassica oleracea var. gongylodes L.) belongs to the family Brassicaceae that is the German name for cabbage turnip, called kohlrabi, which resembles an above ground turnip originated in the coastal countries of Western Europe [1]. The fleshy enlargement of the stem develops entirely above the ground, called knob and is used as a vegetable. It is an excellent vegetable if it is used before it becomes tough and fibrous. It is a member of the cole crops and is an excellent vegetable It is high in minerals and vitamins A and C. It contains adequate amount of water (90.3 g), calories (29.0 g), protein (2.0 g), carbohydrate (6.6 g), fibre (1.0 g) and ash (l.0 g) per 100 g of edible stem. The crop has tremendous medicinal properties like, acidosis, asthma, cancer, cholesterol level, heart problems, indigestion, muscle and nerve functions, prostate and colon cancer, skin problems, weight loss etc [3]

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