Agronomy - Study Mode

[#561] The emitter electrode of pH meter is
Correct Answer

(C) Calomel and Glass Electrode

Explanation

Solution: Calomel Electrode and Glass Electrode are emitter electrodes. These two types of electrodes are used for calibrating the ph meter and also used for the measurement of the pH of any substance. An emitter electrode is an electrode on a transistor from which a flow of electrons or holes enters the region between the electrodes.

[#562] Projecting the current weather conditions into future is called
Correct Answer

(B) Prognosis

Explanation

Solution: Prognosis means a forecast of the likely outcome of a situation. So, projecting the current weather conditions in the future is termed a prognosis or weather forecasting. It is done by the application of science and technology to predict the conditions of the atmosphere in any location at any time.

[#563] In tobacco, the correct chronological order of practices is
Correct Answer

(A) Topping - Desucking - Priming

Explanation

Solution: The cultivation of tobacco usually takes place annually. The correct chronological order of agricultural practices in tobacco cultivation is Topping then Desuckering followed by priming. Topping is the process of removing of budding part of the plant to avoid the flowering and seeding process. Desuckering is the process of removal of lateral branches or suckers or auxiliary buds. Priming is the process of removing leaves from the plant as they mature.

[#564] Which one of the following is not a legume crop
Correct Answer

(A) Wheat

Explanation

Solution: Peas, Groundnuts and Beans are leguminous crops while wheat is a non-leguminous crop. Leguminous crops are those crops that belong to the legume family and that have nodules in their roots that contain nitrogen fixing bacteria. The bacteria convert the atmospheric nitrogen into a soluble form of nitrates and ammonia form.

[#565] The quantity of SSP (16% P 2 O 5 ) required for application to one acre of rice-field at a dose of 60 kg P 2 O 5 ha -1 is
Correct Answer

(C) 150 kg

Explanation

Solution: The analysis or grade of a fertilizer refers to the minimum amounts of nitrogen phosphorus in the SSP in the fertilizer. $$eqalign{
& { ext{The does of nutrient}} cr
& = frac{{left( {{ ext{Quantity of fertilizer}} imes { ext{Nutrient content}}}
ight)}}{{100}} cr
& { ext{The quantity of fertilizer required}} cr
& = frac{{left( {100 imes { ext{Dose of nutrient}}}
ight)}}{{{ ext{Nutrient contant}}}} cr} $$ $$ = $$ 150 kg of SSP is required for application to one acre of rice field.