The optimum sowing time of ‘toria’ in Punjab is:

In the intercropping of Gobhisarson + Toria, the crops are sown in alternate rows at a spacing of:

‘DWRB 123’ is a newly released variety of ……………….. crop, particularly suitable for brewing industry.

Sesame belongs to the plant family:

The foliar cover at the top layer of the crop plants is referred as:

The intensity of crop rotation can be computed by using the following formula:

Which one of the following is the correct formula to compute the ginning percentage in cotton?

Factors such as crop species, varieties, weeds, insect-pests, and diseases, which determine the crop configuration and performance of cropping pattern at a given site, are actually:

The early maturing variety of potato is:

Seed plot technique in potato is used to produce:

The optimum time for sugarcane planting during the spring season in Punjab is:

The best time for sowing of potato in Punjab is:

Depending upon the variety, the recommended seed rate for planting of sugarcane in Punjab ranges between:

The ‘grassy shoot disease’ of sugarcane can be prevented by:

‘Wilt’ is a serious disease in pigeon pea. Which one of the following measures may not help in reducing the incidence of this disease?

‘Parawilt’ of cotton is:

Which one of the following strategies is unsuitable for the management of ‘Ascochyta blight’ of chickpea?

Spray of Bacillus thuriengiensis is suggested to manage the:

Which one of the following strategies does not help in preventing the incidence of ‘whitefly’ in cotton?

Which one of the following statements is incorrect about the desert locusts?

‘Soil fertility and fertilizers’ was written by

Who suggested that the principal nourishment of plant was water?

Who gave the statement ‘water was the sole nutrient of plants’?

………………. suggest that saltpeter (KNO3), and not water, was the ‘principle of vegetation’.

‘Horse hoeing husbandry’ was written by

‘Annals of Agriculture’ a book was written by

Who is considered the fater of field plot technique?

The Law of the minimum, was given by Liebig in

In 1843, Agriculture Experiment Station at Rothamsted, England was started by

Who isolated Bacillus radicicola, the organism responsible for N fixation in 1888?

In remote sensing, which type of radiation is utilized for photography?

One bushel (bu) is equal to

One ton is equal to (kg)

It has been observed that soil pH increases in

The behaviour of the plant in relation to day length is termed?

Scab of Irish potatoes, pox of sweet potatoes, and black root rot of tobacco are favoured by

Which one of the following is an example of positive interaction?

Bray has modified the mitscherlich equation to

The nutrient concentration range in which added nutrient will not increase nutrient concentration is referred as

Reduction reaction (NO2 to NH3) for nitrate assimilation by enzyme nitrite reductase takes place in

Which element is considered as energy currency for the plant?

Which element is indirectly related with drought resistance?

The purpling along the leaf edges is the characteristic deficiency symptom of

Which one of the following element is considered to be an immobile element in the plant?

Among the families of crop plants, the sulphur requirement increases in the order of

Major form of boron absorbed by plants is

When Fe contents in plants falls below or equal to…….ppm, deficiency is likely to occur.

Fe deficiency is mostly seen in crops growing on

Fe is an important component of enzymes

Bronzing is associated with Fe levels greater than 300 ppm in the leaf blade of

Crinkle leaf of cotton is caused by

In plants, deficiency of Zn are usually associated with concentration of less than

Molybdenum is a component of

Downey mildew of pearlmillet may be suppressed by increased soil levels of

Fertilizers containing Cl- ions are not suitable for

Intracellular deposits of which element is known as plant opals?

Stem melanosis disease occurs in wheat due deficiency of

Which element is the metal component of urease enzyme?

CEC of which clay mineral is highest (120-150 cmol/kg)?

The negative charge on 2:1 clays is

For most minerals, the strength of cation adsorption, or lyotropic series, is

Which extract is used for determination of CEC?

Which one of the following formula is used for calculation of base saturation?

The anion exchange capacity (AEC) increases as soil pH

One acre of soil to a depth of 6 inch weight about

Which plant nutrient move from soil to the roots by root interaction, mass flow and diffusion in equal proportion?

Which organisms are microaerobic, free fixers on in associated with grasses?

In which country most of the N required for crop production is obtained through N2 fixation by legumes?

Which of the following pairs is not correctly matched?

For nitrification, the optimum pH is

Nitrosomonas and Nitrobacter cause nitrification are an obligate

Maximum nitrification takes place at

NH4+ fixation takes place in

Which fertilizer has risk of fire or even explosion?

Biuret in urea applied as a foliar spray in citrus fruits should not be more than

Which fertilizer act as a nitrification inhibitor and as a slow release N source?

The inorganic and organic labile P fraction of soil are collectively called

At what pH, there are approximately equal amounts of H2PO4- and HPO3^2-?

Select the pair which is not correctly matched

‘Peat’ soil are generally characterized as

P content in DAP is

What is the porosity % if the particle density of soil is 2.6 and bulk density is 1.3?

Chemical formula of single super phosphate is

Height of rise of water in a capillary tube in directly proportional to

Hill soil are generally

The diagnostic surface horizons are called

Available water holding capacity is maximum in

Size of colloidal clay particle is less than

Soil aeration limits plants growth when % pores filled with water are more than

Soil colour determination chroma refers to which of the following?

Chemical formula of pyrite reclaiment is

How much muriate of potash will be required to supply 50 kg K2O/ha?

Conc. of which element is highest in soil

Which is a incorrect match in the following?

Specific heat is higher in

Laterization is a process of accumulation in soil

Rocks containing more than 65% SiO2 are

Average content of silica in soil is

Concentration of nitrogen in soil air is

Which of following is not correctly matched?

Critical limit of available phosphorus in soil for wheat crop by Olsen’s method is

Sulphur content in ammonium sulphate is

Which one is dominating salt in alkali soil?

In which soil, zinc availablity to crop is higher?

Which of the following is correct?

The major organic cementing agent in soil aggregate formation is

The element present in the prophyrin structure of chlorophyll molecules are

Among the following, the sequence of textural classes of soil with increasing order of fineness of texture is

Among the following, the correct sequence of biotic biopolymer degradation pathway is

Which one of the following is a manganese containing minerals?

Which one of the following sets shows the correct soil order in sequence of increasing age?

Humic acid isolated from soils is

The Fe-chelate suitable for application to crops grown on calcareous soils is

Amongst oil cakes, the highest nitrogen content is in

Plasticity of soil can be determined by using

Soil aggregation can be estimated by using

Which one of the following values given in terms of redox-potential of soils (mv) represents a highly condition of the soil?

From Q/1 relationship described by Beckett (1964), a high PBC^K indicates that

Which not a secondary tillage equipment?

Leibig’s law is associated with?

Year round tillage is type of……?

In dry farming rainfall is….?

Pahala blight of sugarcane is due to the lack of….?

Khaira in rice is a disease of……?

In SSP quantity of sulphur is (in percentage)….?

Depth of water required by a crop is..?

Cropping intensity in monocropping is..?

True Cinnamon is?

Darcy’s law governs

Interveind chlorosis and whitening Of leaves are the Characteristic features of

If % P205 in a fertilizer is 46, % P will be

Cell theory (1838) was proposed by

Cyprus rotundus is a

Pistia stratiotes is

Shade loving plants are referred to as

Iron deficiency is common in

Nitrogen content in ammonium sulphate is

‘Dapog’ method of nursery IS related

Root rot disease in cotton is caused due to

Which one of the following is the correct quantity of zinc sulphate required to prepare 100 litres of 200 ppm solution for foliar spray? Quantity of zinc sulphate (in grams).