A soil with a pH value of 8 is considered alkaline. Soils with a pH above 7 are alkaline, while those with a pH below 7 are acidic. Neutral soils have a pH of 7. Alkaline soils can affect the availability of certain nutrients to plants.
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120 Mins English English60 Questions60 Marks45 Mins English English30 Questions30 Marks27 Mins EnglishBio-fertilizers are
| List – I |
List – II |
| A. Nitrobacter |
I. Oxidation of sulphur |
| B. Nitrosomonas |
II. Asymbiotic fixation of nitrogen |
| C. Clostridium |
III. Conversion of NH₄–N to NO₂–N |
| D. Thiobacillus |
IV. Conversion of NO₂–N to NO₃–N |
The moisture content of the vermibed for vermicomposting should be maintained around
Sugarcane trash can be easily composted by adding
The quantity of urea to be applied for one acre of rice when recommendation is 120 kg N/ha is
Carrier material used in biofertilizers should possess following qualities
a. Non-polluting b. Non-toxic c. Bio-degradable d. High water holding capacity
The green leaf manure having about 4.6% K₂O content is
A compound containing a single primary nutrient is called ______ fertilizer
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