EFFECT OF BORON, MANGANESE, MOLYBDENUM AND ZINC ON GROWTH AND YIELD OF CAULIFLOWER (Brassica oleracea L. var. botrytis)
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Date
2019
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Birsa Agricultural University, Ranchi
Abstract
Cauliflower (Brassica oleracea L. var. botrytis) is one of the most important
vegetable of Brassicaceae family. It is a heavy feeder of plant nutrients. Nutrition is one
of the prime considerations for getting higher yield of any crop. Mineral fertilizer
improves growth and yield of cauliflower due to role of nitrogen, phosphorus and
potassium on the meristematic activity. Boron, Manganese, Molybdenum and Zinc are
required for normal plant growth and development. Plants differ widely in their nutrient
requirements but the ranges of deficiency and toxicity is narrow. Boron, molybdenum,
manganese and zinc deficiencies are very common in cole crops particularly in
cauliflower, which may cause many anatomical, physiological and biological changes.
Hence, the deficiency of micronutrient threatens the ever increasing area and
marketability of cauliflower.
A field experiment entitled “Effect of Boron, Manganese, Molybdenum and Zinc
on growth and yield of cauliflower (Brassica oleracea L. var. botrytis)” was conducted
during summer season of 2018 at experimental farm of Department of Horticulture, Birsa
Agricultural University, Kanke, Ranchi, Jharkhand. The experiment was laid out in
Randomized Block Design (RBD) with 16 treatments replicated thrice. The cauliflower
genotype “Hajipur Early” was cultivated to study the effect of foliar application of
micronutrients. The treatments were of T1- 0.2% Borax; T2- 0.1% Ammonium
molybdate; T3- 0.5% Manganese sulphate;T4 - 0.5% Zinc sulphate; T5- 0.2% Borax +
0.1% Ammonium molybdate; T6- 0.2% Borax + 0.5% Manganese sulphate; T7- 0.2%
Borax + 0.5% Zinc sulphate; T8- 0.1% Ammonium molybdate + 0.5% Manganese
sulphate; T9- 0.1% Ammonium molybdate + 0.5% Zinc sulphate; T10- 0.5% Manganese
sulphate + 0.5% Zinc sulphate; T11- 0.2% Borax + 0.1% Ammonium molybdate + 0.5%
Manganese sulphate; T12- 0.2% Borax + 0.5% Manganese sulphate + 0.5% Zinc
sulphate; T13- 0.1% Ammonium molybdate + 0.5% Manganese sulphate +0.5% Zinc
sulphate; T14- 0.2% Borax + 0.1% Ammonium molybdate + 0.5% Zinc sulphate; T15-
0.2% Borax + 0.1% Ammonium molybdate + 0.5% Manganese sulphate + 0.5% Zinc
sulphate and in Control (T0) only water was sprayed. The foliar application of
micronutrients as per treatments was done at 15, 45 and 75 days after transplanting and
the growth observations were recorded at 30 days interval and yield observations were
recorded at harvest. The soil of the experimental site was sandy loam with pH 6.2,
available nitrogen (227kg/ha), available phosphorus (36.4kg/ha), available potassium
(224.70 kg/ha), available boron (0.324ppm), available manganese (9.32ppm) and
available zinc (2.32ppm). The observations regarding growth were recorded at 30 days
interval and yield parameters were recorded at harvest.
Results revealed that the foliar application of 0.2% Borax + 0.1% Ammonium
molybdate + 0.5% Manganese sulphate + 0.5% Zinc sulphate was significantly best and
other treatments were at par as like 0.2% Borax + 0.1% Ammonium molybdate + 0.5%
Zinc sulphate; 0.1% Ammonium molybdate + 0.5% Manganese sulphate + 0.5% Zinc
sulphate; 0.2% Borax + 0.5% Manganese sulphate + 0.5% Zinc sulphate and 0.2% Borax
+ 0.1% Ammonium molybdate + 0.5% Manganese sulphate in respect of growth and
yield parameters in cauliflower. However, the foliar application of 0.2% Borax + 0.1%
Ammonium molybdate + 0.5% Manganese sulphate + 0.5% Zinc sulphate (T15)
produced highest net monetary return and recorded highest B: C ratio.
It can be concluded from one year of experiment that for getting higher yield
(159.70q/ha) and for highest B: C (3.06) with an average cost of Rs 78635/- and net
profit of 240781/- in cauliflower the combined foliar application of Borax 0.2% +
Ammonium molybdate 0.1% + Manganese sulphate 0.5% + Zinc sulphate 0.5% should
be done at 15, 45 and 75 days after transplanting.
Description
EFFECT OF BORON, MANGANESE,
MOLYBDENUM AND ZINC ON GROWTH
AND YIELD OF CAULIFLOWER (Brassica
oleracea L. var. botrytis)