Skip to main content
BRUSSELS SPROUT
4.4 PHYSIOLOGICAL DISORDERS
Brussels sprouts show various non-parasitic disorders which cause tissues to die off. In some
cases, these deviations have been shown to depend mainly on heritable characters; whereas in
other cases external factors had a least marked effect.

Tip Burn of Brussels Sprouts
This problem can cause severe economic losses. Internal leaves turn brown, especially on the
edges or tips. Inside sprouts, the centre tissues often breakdown. It is a physiological disorder
which is associated with an inadequate supply of calcium to the young, actively growing inner
leaves. High humidity, low soil moisture, high potassium, high nitrogen, or low soil calcium all
influence calcium availability.

Internal Browning
In Brussels sprouts, the symptoms are a yellowing of the distal ends of the leaves within the
sprout, generally on a line through the centre region of the sprout and midway between its
growing point and exterior surface. From a practical aspect, internal browning is especially
troublesome because it cannot usually be detected from external examination of the sprouts, yet
quite a small number of affected sprouts may taint a large sample; especially when they are
blanched for quick-freezing.

Factors which have contributed to internal browning have done so by bringing about a temporary
localized calcium deficiency in the sprouts. Rapid growth, low soil moisture and high relative
humidity, which inhibit transpiration, are commonly implicated. The actual soil calcium levels
have very little influence unless they are extremely low.

Ensuring the soil moisture is close to field capacity can reduce the risk of internal browning.
Excessive nitrogen fertilizer should be avoided. Foliar sprays of calcium nitrate may prevent the

onset of internal browning if applied before the onset of adverse growing conditions. \

Comments

Post a Comment

Popular posts from this blog

Plant protection Pests Mango hopper (Tenemanchu purugu) ( Idioscopus clypealis , Idioscopus nitidulus   Amritodus atkinsoni   )             Damage is caused by sucking sap from tender leaves and inflorescence. Ovipositional punctures also cause damage to tender leaves and inflorescence. Severely infested leaves become curled and inflorescence gets dried. Affected parts are covered with honeydew and sooty mould. Control One spray with carbaryl @ 3 gms/litre of water in November before panicle  formation   ensuring  that tree trunks are also thoroughly drenched during the spray. During full length stage of panicle but before full bloom full bloom stage spraying with endosulfan @ 2 ml /litre of water or Dimethoate @ 2 ml /litre of water or imida cloprid @ 0.3 ml/ litre of water if incidence of hoppers is high (more than 5-10 per panicle).After fruit set at pea size stage spraying with imida c...
Post a Comment
Read more

🍀HOME GARDEN🍀 Author:- G.keerthana

HOME GARDENING  Article by :- G.keerthana . Growing your own vegetables can be fun as well as rewarding. All you need to get started is - some decent soil and few plants and this way you provide fresh healthy vegetables.         My own home garden  A good home gardening plan may include selecting the right location, determining the size of the garden, deciding upon the types and varieties of vegetables to plant.  It must be noted that there are many vegetables that can be grown in pots. How to begin with Home Gardening: Site selection. Size of the garden. Deciding on what to grow. Location of vegetables in the garden. Time for plantation. Gardening images of my own garden: Uses of Home gardening:- Improve your health. Consuming more fresh fruits and vegetables is one of the most important things you can do to stay healthy. Save money on groceries. Get outdoor exercise. Gardening is a natural stress reliever. May lower the stress...
5 comments
Read more
Peach (Prunus persica) is a temperate fruit rich in proteins, sugar, minerals and vitamins. Introduction of the cultivated peaches probably took place in the latter half of the 19th century. Today, it is being grown in the midhill zone of the Himalayas extending from Jammu and Kashmir to Khasi hills 1,000–2,000m above mean sea-level. Low-chilling peaches are grown in submountaineous region and Punjab, Haryana, Delhi and western Uttar Pradesh. It is also being grown to a limited scale in the hills of south India and in the north-eastern region of the country. Climate and Soil Peaches require humid climate with cold winter and dry summer. It is moderately winter hardy and sensitive to low temperature injury. Swelling buds are injured at –6.5°C. Sites which are free from early spring frost are more suitable as peaches bloom early in the season. The blooming period can be delayed by the application of Gibberellic acid (200ppm) before leaf fall or by application of Ethephon, to avoid th...
Post a Comment
Read more