Horticulture - Study Mode

[#241] Gum is extracted from
Correct Answer

(D) Cluster bean

Explanation

Solution: Cluster bean is the bean from which Gum is extracted. Guar or cluster bean (C. tetragonoloba L.) is a drought-resistant leguminous crop that is generally cultivated in northwest India and Pakistan for use as a vegetable, green fodder and green manure and for its seeds, as well as for the industrial extraction of guar gum. Guar gum with the best thickening power and fastest hydration rate is produced when the splits are first soaked in water and then flaked, extruded or ground.

[#242] Seed rate for spring summer crop of Okra is
Correct Answer

(B) 18 - 20 kg

Explanation

Solution: Seed rate for spring summer crop of Okra is 18 - 20 kg. Okra is sown in rows by dibbling method, sowing is also done by dropping the seeds behind the plough furrow. During rainy season it should be sown on ridges. For spring summer crop the distance should be 30 × 45 cm and for rainy season 45 × 60 cm. 10 - 15 t/ha of FYM should be mixed with the soil 15 - 12 days before sowing. The sowing time for spring summer crop is February - March.

[#243] Which of the following sex form observed in cucumber?
Correct Answer

(D) All of these

Explanation

Solution: All these three sex from the following options, i.e. Monoecious, Gynoeciuos, and Trimonoeciuos can be observed in cucumber. In a monoecious cucumber plant, male flowers arise in early or lower nodes, followed by a mixture of male and female flowers at the middle nodes and ending with female flowers only in the higher nodes. Gynoecious varieties produce only female flowers and have a more concentrated period of fruit production. There are also parthenocarpic varieties that do not need to be pollinated to produce fruit. In cucumber, the bisexual flowers occurring in trimonoecious plants have superior ovaries (hypogynous, the normal bisexual and female flowers are epigynous), derived as a modification of staminate flowers.

[#244] Best time for the propagation of apple is
Correct Answer

(A) December - January

Explanation

Solution: The best time for the propagation of apples is December - January . The apple is a temperate fruit crop. However, in India, the apple-growing areas do not fall in the temperate zone but the prevailing temperate climate of the region is due to the Himalayan ranges and high altitudes. The average summer temperature should be around 21 - 24°C during the active growth period. The main methods of propagation of apples in our country are grafting, Budding and Rootstocks. Planting is usually done in December and January.

[#245] Buttoning is a physiological disorder in
Correct Answer

(B) Cauliflower

Explanation

Solution: Buttoning is a physiological disorder in cauliflower . This disorder of cauliflower is identified by the development of small curd or 'button' while the plants are small and consequently, the curd gets open. This is caused due to the deficiency of nitrogen, by planting seedlings older than 6 weeks, or other factors like insufficient moisture supply, water logging, hot and dry weather, carelessness in proper and timely weeding and pest and disease attack.