Soil Fertility
Gbogbo ọrọ náà
A fertile soil is one that can supply a crop with the nutrients it needs, in the right amounts, throughout the growing season. Fertility is not the same as the amount of soil there is: a deep soil can still be hungry, and a thin soil can be made productive with care. The skill of the farmer lies in reading the signs of what a soil lacks and putting it right, whether by recycling nutrients naturally or by adding the right fertiliser.
In this lesson you will learn the major plant nutrients and how to recognise their deficiency in a crop, follow nitrogen as it cycles between the air, the soil and living things, and weigh the value of legumes, organic manures and inorganic fertilisers. You will also see how testing and adjusting soil pH, by liming or by choosing fertilisers with care, keeps a soil in good heart.
Ebumnobi
- (a) explain the importance of the following major nutrients to soil fertility and describe the signs and effects of their deficiency in plants: major nutrients - compounds of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur.
- (b) carry out practical soil sampling and tests for soil pH.
- (c) describe the nitrogen cycle and its importance to soil fertility.
- (d) explain the importance of legumes and the use of organic fertilisers (manure and compost) in maintaining good soil structure and fertility.
- (e) describe the use of inorganic fertilisers (limited to one example each of a fertiliser containing predominantly phosphorus and predominantly potassium and one example of a compound fertiliser) in maintaining soil fertility.
- (f) explain how fertilising practices and liming can affect soil pH.
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Soil Fertility. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which nutrient is most needed for healthy leaf and stem growth? A. Phosphorus B. Potassium C. Nitrogen D. Calcium Answer: C
- A plant with purple leaves and small roots is most likely deficient in: A. Nitrogen B. Phosphorus C. Potassium D. Magnesium Answer: B
- In the nitrogen cycle, the conversion of nitrates back into nitrogen gas is called: A. Nitrogen fixation B. Nitrification C. Denitrification D. Decay Answer: C
- Which fertiliser mainly supplies potassium? A. Single superphosphate B. Muriate of potash C. Ammonium nitrate D. Lime Answer: B
- Adding lime to a soil that has become too acid will: A. Lower the soil pH further B. Raise the soil pH towards neutral C. Remove all the nitrogen D. Have no effect on pH Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Nutritional Requirements of Plants
Describe how plants obtain nutrients
"Biology: Nutritional Requirements of Plants" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/31-1-nutritional-requirements-of-plants. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Akụkụ akwụkwọ
Biogeochemical Cycles
Discuss the biogeochemical cycles of water, carbon, nitrogen, phosphorus, and sulfur
"Biology: Biogeochemical Cycles" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/46-3-biogeochemical-cycles. Access for free at https://openstax.org/books/biology/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Soil Fertility? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
