Fertilizer Applications MCQ Quiz in తెలుగు - Objective Question with Answer for Fertilizer Applications - ముఫ్త్ [PDF] డౌన్‌లోడ్ కరెన్

Systemic pesticide is a form of pesticide that is water soluble and absorbed by a plant when applied to its roots, seeds, or leaves. Once the pesticide is absorbed by the target plant, the chemicals in the pesticide will circulate through the plant's system.

The biting and sucking pest when feed on the such plant parts the insecticide enter their body which leads to reduction in insect pest population in the field.

Potassium(K) helps crop plants resist disease organism invasion or penetration by strengthening the cell wall structure. Plants having adequate K will have thicker cell walls compared to plants deficient in K. This makes it harder for disease organisms to penetrate plant cells and establish an infection. This applies to fungal, bacterial, nematode, insect, and viral disease organisms.

Urea contains 46% nitrogen.

DAP contains 18% nitrogen and 46% phosphorus.

Anhydrous Ammonia contains 82% nitrogen.

SSP contains 16% phosphorus.

The correct answer is Split dose.

• To “split-apply” nitrogen, make two or more fertilizer applications during the growing season rather than providing all of the crop’s N requirements with a single treatment prior to planting.
• When all of the nitrogen is supplied ahead of crop growth, more of that nitrogen is susceptible to denitrification, leaching or volatilization.
• When split dose of N and some portion given later almost all of that second application will be taken up by the plant.
• Plant roots are more developed and better able to access the N.
• Plant’s nitrogen requirement is increasing so uptake is much more efficient.

The correct answer is 75, 25 and 37.5 kg/ha.

1. Dry seeded rainfed un-puddled lowland rice:

• It is called as semi-dry rice.
• Crop establishment is as that of rainfed rice but the rain water collected in village tank (Kanmai) is supplemented to protect the crop during peak vegetative and reproductive phases.
• Interaction between applied nutrients and crop is positive here due to better moisture availability than rainfed rice.
   

2. Manures and fertilizer application​:

• Blanket recommendation: 75:25:37.5 kg N:P₂O5:K₂O /ha.
• Apply a basal dose of 750 kg of FYM enriched with fertilizer phosphorus at 25 kg/ha.
• Apply N & K in three splits at 20-25, 40-45 and 60-65 days after germination.
• Each split may follow 25 kg N and 12.5 kg K₂O.
• If the moisture availability is substantial, split application at panicle initiation may be done with 40 kg N and 12.5 kg K₂O.
• Basal application of ZnSO₄ at 25 kg/ha and FeSO₄ at 50/ha is desirable wherever Zinc and iron deficiency were noted.

The correct answer is 100 kg/ha.

• Fertilizer application in maize:
• Apply NPK fertilizers as per soil test recommendation as far as possible.
• If soil test recommendation is not available adopt a blanket recommendation of 135:62.5:50 NPK kg/ha.
• Apply quarter of the dose of N; full dose of P2O5 and K2O basally before sowing.
• In the case of ridge planted crop, open a furrow 6 cm deep on the side of the ridge, at two thirds the distance from the top of the ridge.
• Apply the fertilizer mixture along the furrows evenly and cover to a depth of 4 cm with soil.
• If bed system of planting is followed, open furrows 6 cm deep at a distance of 60 cm apart.
• Place the fertilizer mixture along the furrows evenly and cover to a depth of 4 cm with soil. 
• When Azospirillum is used as seed and soil application, apply 100 kg of N/ha (25% reduction on the total N recommended by soil test).

The correct answer is 10 - 12 kg/ha.

• Field-scale deficiency of Zn in rice was first discovered at Pantnagar in India.
• The deficiencies of Zn and Fe can occur fairly commonly in rice fields, especially on high pH soils.
• Where Zn has not been applied to the nursery, 10 - 12 kg/ha through zinc sulphate (21% Zn) can be applied before planting. 
• Fe deficiency can be corrected by giving 2 - 3 foliar sprays of 1% ferrous sulphate at weekly intervals.

The correct answer is Fertigation.

• Fertigation is a method of fertilizer application in which fertilizer is incorporated within the irrigation water by the drip system.
• In this system fertilizer solution is distributed evenly in irrigation.
• The availability of nutrients is very high therefore the efficiency is more.
• In this method, liquid fertilizer as well as water soluble fertilizers are used.
• By this method, fertilizer use efficiency is increased from 80 - 90%

The correct answer is Foliar spray.

• Micro nutrient application can be performed as soil fertilization or as a foliar spray.
• It is an excellent method because foliar feeding targets the plants which show the signs of micro nutrient deficiency.
• Effective management tool to favorably influence pre-reproductive growth stages by compensating for environmentally induced stresses of adverse growing conditions.
• Applications before visible signs of their deficiency can make a crop even better, either by stimulating more vigorous re-growth or maximizing the yield potential growth stage period.
• Advantages of foliar sprays rely on much lower application rates than for soil applications, as well as on immediate plant response to the applied nutrient.
• This method also requires caution due to high salt concentrations of the sprays which can result in leaf burning.

The correct answer is 5%

• Urea most commonly used N fertilizer contains 46% N.
• It is hygroscopic therefore produced in granular /pellet form.
• Maximum biuret < 1.5% according to Fertilizer Control Board (FCO).
• When applying to soil, the urea fertilizer application rate varies according to the plant and season. 
• However, the solution for a foliar spray is different; it is generally a solution of 0.5 and 2% urea in water and can go up to 5%