Comparison of the Suitability of Contiguous Fallow-forest Lands for Cassava, Yam, Cocoyam and Sweet Potato Production in Nsukka, Southeastern Nigeria

• Autorzy: Asadu Charles L. A. , Alfred G. O. Dixon , Ginika M. Ajogu , Miriam Ugadu , Edeh Ifeoma

Warianty tytułu

RU

Сравнение пригодности смежных лесных участков, вспаханных под пар, для выращивания культур маниока, батат, кокосового ямса и сладкого картофеля в провинции Nsukka, юго-восточная Нигерия

• Języki publikacji: EN

Abstrakty

EN

This analysis compared the suitability of contiguous fallow-forest lands for cassava, yam, cocoyam and sweet potato production in Nsukka, south-eastern Nigeria. The fallow plots were brought into cultivation in 1998 under the IITA-UNN long-term collaborative research. The sole cassava plots were grown to cassava only continuously for five years and then left to fallow. Soil samples were collected from 0-20 cm depth in triplicates using an auger and core sampler from the seven representative fallow plots previously grown to sole cassava from 1998–2003 and under fallow till date as well as the adjacent forest land. The objective was to use the soil qualities as recovered during the fallow period and those from the original adjacent forest to determine their current suitability for the production of the four crops. Using the FAO’s principle of limiting conditions revealed that after 13 yrs of fallow, the plots grown to sole cassava was classified as highly suitable (S1) for sweet potato production but moderately suitable (S2) for cassava, yam and cocoyam production. The remnant forest land was highly suitable for sweet potato production but moderately suitable for cassava, yam and cocoyam production. The dominant soil limitations are organic matter, low cation exchange capacity and exchangeable potassium for both cassava and yam production. The major limitations to cocoyam production are low available phosphorous, base saturation and soil pH. If these constraints are addressed adequately by soil nutrient management programmes all the plots will scale up to S1 class for the four crops.

RU

Данное исследование сравнивало пригодность смежных возделанных лесных участков для выращивания маниоки, батата, кокосового ямса и сладкого картофеля в провинции Nsukka, юго-восточная Нигерия. Болотные участки были культивированы в 1998 году в рамках долгосрочного совместного исследования IITA-UNN. Участки использовались только для выращивания маниоки в течение пяти лет, а затем их оставляли под паром. Образцы почвы были собраны с глубины 0-20 см в трех экземплярах с использованием бура и керноотборника на семи возделанных участках-образцах, ранее используемых для выращивания только маниоки в 1998-2003 и находящихся под паром до настоящего времени, а также на прилегающих лесных участках. Цель состояла в том, чтобы исследовать свойства почвы данных участков восстанавливаться в период нахождения по паром, а также свойства почвы прилегающих лесных участков с целью определения их пригодности для текущего производства четырех культур. Использование принципа FAO предельных условий показало, что после 13 лет парования, участки, используемые для выращивания только маниоки, классифицировались как очень подходящие (S1) для выращивания сладкого картофеля, но умеренно подходящие (S2) для маниоки, батата и кокосового ямса. Остальные лесные угодья очень хорошо подходили для выращивания сладкого картофеля, но умеренно подходили для выращивания маниоки, батата, кокосового ямса. Доминирующими ограничениями почвы являются органические вещества, низкая емкость катионного обмена и обменный калий, как для выращивания маниоки, так и батата. Основными ограничениями для производства кокосового ямса являются низкое содержание фосфора, насыщенность почвы и уровень рН почвы. Если эти ограничения надлежащим образом учитываются программами обработки почвы питательными веществами, все участки будут масштабироваться до класса S1 для четырех культур.

Słowa kluczowe

EN

fallowing; nutrient sustainability; cassava; cocoyam; yam; sweet potato

RU

пар; питательная устойчивость; маниока; кокосовый ямс; сладкий картофель

• Wydawca: Altezoro s.r.o. (Slovak Republic) and Publishing Center "Dialog" (Ukraine)
• Czasopismo: Path of Science
• Rocznik: 2017
• Tom: 3
• Numer: 1
• Strony: 1.1-1.12

Daty

wydano

2017-01-26

Twórcy

autor

Asadu Charles L. A.

• University of Nigeria, Department of Soil Science, Nigeria

autor

Alfred G. O. Dixon

• International Institute of Tropical Agriculture, Nigeria

autor

Ginika M. Ajogu

• University of Nigeria, Department of Soil Science, Nigeria

autor

Miriam Ugadu

• University of Nigeria, Department of Soil Science, Nigeria

autor

Edeh Ifeoma

• University of Nigeria, Department of Soil Science, Nigeria

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Identyfikatory

DOI

10.22178/pos.18-1