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Ssc 372: Soil Fertility And Plant Nutrition Question Paper

Ssc 372: Soil Fertility And Plant Nutrition

Course:Bachelor Of Science In Soil Science

Institution: University Of Eldoret question papers

Exam Year:2016

UNIVERSITY EXAMINATION
2016/2017 ACADEMIC YEAR
REGULAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN SOIL SCIENCE
COURSE CODE:SSC 372
COURSE TITLE:SOIL FERTILITY AND PLANT NUTRITION
1 a)
. What is a plant essential nutrient?(1mk)
.State and explain the characteristics of essential plant nutrients(6mks)
b)Using illustration show how cation exchange capacity changes with soil pH (6 mks)
c)In a farmer's Baraza in kuinet area,the main objective is to establish the avenues through which mineral nutrients applied through fertilizer are lost from the soil system and become unavailable for plant uptake.As a soil management expert,explain to farmers the avenues of plant nutrients loss(10mks)
d)Soil structure and composition of soil air affect nutrients availability.What is your opinion on this?(2mks)
SECTION B:
2a)Plant analysis is a valuable tool in deter the general nutritional status of crops.Why?(6mks)
b.What is soil productivity?(1mk)
. What is the role of potassium in maize quality(5mks)
3a) Cation exchange is significant in plant nutrients availability.Do you support this statement?(6mks)
Third year students were given soybean legume seeds to plant and later monitor formation of nodules and ascertain nitrogen fixation The results of the experiment indicated there was minimal nodule formation and nitrogen fixation did not occur
.What was the indication that the nodules were not fixing atmospheric nitrogen? (1mk)
.State and explain the factors that negatively influenced nitrogen fixation (4mks
4a) Differentiate between Cation exchange and anion exchange(4mks)
b)There are beneficial cultural management practices that are important in the soil fertility management.Outline and explain four of these practices(8mks)
c) Explain the following terms as used in nutrient uptake from soil solution(3mks)
. Membrane diffusion
. Active transport

Ssc 372: Soil Fertility And Plant Nutrition Question Paper

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