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Farmers in a particlular region were con...

Farmers in a particlular region were concerned that pre mature yellowing of leaves of a pulses crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

A

Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5-trichlorophenoxy acetic acid

B

Application of iron and magnesium to promote synthesis of chlorophyll

C

Frequent irrigation of the crop

D

Treatment of plants with cytokinins along with a small dose of nitrogenous fertilizer

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The correct Answer is:
B
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Farmers in aparticlular region were concerned that pre mature yellowing of leaves of a pluser crop might cause decrease in the yield. Which treatment could be most benefical to obtain maximum seed yield?

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might caused decrease in the yield. Which treatment could be most be most beneficial to obtain maximum seed yield?

Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cuuse dectease in the yild .Which treatment could be most benefical top obtain maxmum seed yield

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The farmers today can also select seeds

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Farmers are always careful

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Nowadays it is possible to reduce the loss caused by pests and harmful bacteria

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. Scientists who study soil believe that

First read a passage and then answer the questions following that passage. Soil scientists have shown that the soil teems with millions of living things, many of them useful, others harmful. The living things which are useful include earthworms and various kinds of bacteria. Earthworms loosen the soil and so enable air and water to enter it. Bacteria, which are microscopic living things break down dead plants and animals and make humus, or take nitrogen from the air and change it into substances that plants use. The living things that do harm include other bacteria and fungi which cause diseases. Other harmful things are pests such as wire worms which feed on the roots of grass and other plants. While the farmer can usually keep weeds in check by careful cultivation, this alone may not protect his crops from insects, pests and diseases. Nowadays, however, he is much better able to control these enemies. He may plant. specially resistant types of seeds or he may keep the pests and diseases in check with chemicals. With better seeds farmers have been able to increase their crop yield . They can grow crops that ripen more quickly and have a stronger resistance to disease, frost or drought. The living things that do harm

CENGAGE BIOLOGY-MINERAL NUTRITION-ARCHIVES
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  2. a plant requires magnesium for :

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  3. Which of the following is a flowering plant with nidules containing fi...

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  4. About 98 percent of the mass of every living organism is composed of j...

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  5. Which one of the following elements is not an essential micronutrient ...

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  6. Carbohydrates are commonly found as starch in plant storage organs. Wh...

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  7. Nitrogen fixation in root nodules of Alnus is brought about by

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  8. Nitrogen fixation in root nodules of Alnus is brought about by

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  9. Guard cells help in

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  10. Manganese is required in

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  11. Which of the following is a symbiotic nitrogen fixer ?

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  12. Which one of the following pairs is wrongly matched?

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  13. An element playing important role in nitrogen fixation is

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  14. Which one of the following is not a micronutrient

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  15. The chief water conducting elements of xylem in gymnosperms are

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  16. Which one of the following structures between two adjacent cells is an...

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  17. One of the free-living, anaerobic nitrogen-fixer is Or which of th...

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  18. The common nitrogen-fixer in paddy fields is

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  19. Nitrifying bacteria:-

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  20. Which one of the following elements (miconutrients) in plants is not r...

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  21. A prokaryotic autotrophic nitrogen fixing symbiont is found in

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