Tip of the day – Page 174

Identification and reason for bulb splitting In Onion (physiological Disorder)

Uneven irrigation of onion fields increases the chances of this disorder.
Fields that are over irrigated, allowed to dry completely and then over irrigated again often have many split bulbs.
Bulb mites are frequently associated with bulb splitting.
The first symptom is observed as the rotting of the basal portion of the bulb.
Secondary growth of the affected bulb often occurs when several small bulbs protruded from the spilt basal portion.

Watermelon responds very much to irrigation but it can not withstand waterlogged conditions.
It is generally cultivated as a spring-summer crop in which the frequency of irrigation is very important.
The crop should be irrigated at 3-5 days intervals.
Soil moisture stress during pre-flowering, flowering, and fruit development stage drastically reduce yield.
Irrigation should be stopped during ripening as it adversely affects fruit quality and promotes fruit cracking.

Watermelons can grow in many kinds of soil but prefer a light, sandy, fertile loam that drains easily.
Add generous amounts of manure, compost and leaves to your field and work the soil well prior to planting.
Fields should be prepared thoroughly by plowing and harrowing and removing the different types of plant debris.
A gentle, south-facing slope is ideal.
It should also be pulverized and leveled; furrows are made 2 m apart.

The time of sowing watermelon is from November to March.
After the November to December sowing time, the plant should be protected from frosting. This is the reason most sowing is done from January to March.
In the hilly areas, watermelons are sown from March to April.

A bug is black in color with red and yellow lines
Young plants wilt and wither as a result of the attack
Both the nymph and adult suck the sap of leaves and tender stems resulting in poor growth and pale yellow color of the leaves.
In a later stage, the insects suck the sap of the pods with the result both quantity and quality of seed are adversely affected.

Apply FYM before 15 days of transplanting in the main field.
At the time of transplanting, use Calcium Nitrate @ 10 KG/ acre.
Twice spray of calcium EDTA @ 150 Gm/acre at the time of appear deficiency symptoms.

The flowering stage is important in mustard crops.
In this stage, it is beneficial to increase the number of flowers and give hormones at the time of growth of pods.
For this, spraying of Homobrassinolide 0.04% @ 100 ml / acre with 19:19:19 @ 1 kg per acre.s

Increase micronutrient availability to plant from the soil like Mn, Mg, Fe, Mo, B, Zn and Cu in addition to P2O5.
Encourage faster root growth for water and nutrient uptake.
PSB produces organic acids like malic, succinic, fumaric, citric, tartaric acid and acetic acid which fasten the P2O5 uptake, maturity and increase yield.
Increase resistance towards diseases and drought tolerance due to rapid cell development in the plants.
Reduce 25 – 30% phosphatic fertilizer requirement.