Wet and Dry Season Effects on Select Soil Nutrient Contents of Upland Farms in North Bank Region of the Gambia

Sonko, Ebrima; Tsado, D. N.; Yaffa, Sidat; Okhimamhe, A. A.; Eichie, Julia

doi:10.4236/ojss.2016.63005

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…This coincides with the results obtained in the present study, where most grasses presented higher protein and NDF values during the rainy season, or with the results found by Alvarado–Bolovich et al [ 23 ], who state that native grasses in the Andes increased their protein value by 34% during the rainy season (110 vs. 72 g/kg DM) though showing only a 3% increase their NDF value during the rainy season (677 vs. 660 g/kg DM). This can be explained by the fact that perennial species grow faster due to the greater availability of nutrients in the soil during the rainy season [ 24 ]. In addition, factors such as temperature and humidity in the environment directly affect plant growth and metabolism, which is why an increase in temperature, which normally occurs during the rainy season, causes the reserve carbohydrates of grasses to be reduced and increases compounds such as cellulose, lignin and pentoses, as well as increasing the percentage of total nitrogen and soluble nitrogen (Bernal [ 25 ]).…”

Section: Discussionmentioning

confidence: 99%

Relationship between Chemical Composition and In Vitro Methane Production of High Andean Grasses

Velasquez

Molina-Botero

Muñoz

et al. 2022

Animals

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The present study aims to establish the relationship between chemical composition and in vitro methane (CH4) production of high Andean grasses. For this purpose, eight species were collected in dry and rainy seasons: Alchemilla pinnata, Distichia muscoides, Carex ecuadorica, Hipochoeris taraxacoides, Mulhenbergia fastigiata, Mulhenbergia peruviana, Stipa brachiphylla and Stipa mucronata. They were chemically analyzed and incubated under an in vitro system. Species such as A. pinnata and H. taraxacoides were characterized by high crude protein (CP. 124 g/kg DM) and low neutral detergent fiber (NDF. 293 g/kg DM) contents in both seasons, contrary to Stipa grasses. This same pattern was obtained for H. taraxacoides, which presented the highest values of gas production, organic matter digestibility (DOM), metabolizable energy (ME) and CH4 production (241 mL/g DM, 59% DOM, 8.4 MJ ME/kg DM and 37.7 mL CH4/g DM, on average). For most species, the content of CP, acid detergent fiber (FDA) and ME was higher in the rainy season than in the dry season, which was the opposite for CH4 production (p ≥ 0.05). In general, the nutritional content that most explained the behavior of CH4 production was the NDF content (R2 = 0.69). Grasses characterized by high NDF content produced less CH4 (R = −0.85).

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Section: Discussionmentioning

confidence: 99%

Relationship between Chemical Composition and In Vitro Methane Production of High Andean Grasses

Velasquez

Molina-Botero

Muñoz

et al. 2022

Animals

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“…Pearson et al (2003) The irrigation type in the research area depends on the cropping seasons. 16,089,189 19,311,222,091 18,362,859 22,450,087,871 Rainy Season II 17,035,626 15,228,557 1,807,068 19,802,028 17,148,965 2,653,063 Dry Season 16,990,229 17,113,[121][122]892 18,527,982 Source: Primary Data (2018) Source: Primary Data 2018nutrients (Sonko et al, 2016). Meanwhile, in the dry season, the low production and the rent of water pump machine are the main causes of the negative profi t.…”

Section: The Research Was Conducted Frommentioning

confidence: 99%

The Policy Analysis Matrix in Measuring Competitiveness of Maize Farming System in Marginal Areas

Haryanto

Masyhuri

Irham

2019

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Yellow maize for animal feed is one of potential strategic commodities to be developed in Pacitan Regency, as a marginal area. The focusing question is whether this commodity generates competitiveness. This research aims: 1) to determine the private and social profitability, 2) to analyze competitiveness through comparative and competitive advantages, 3) to discuss effects of government policies on maize farming system. Data were analyzed by using the Policy Analysis Matrix (PAM) method. A sampling area was purposively selected, i.e. Pacitan Regency, while 102 maize farmers were proportionally selected as respondents. The research covers three seasons: rainy season I, rainy season II, and dry season. The result of analysis shows that in the rainy season II, maize farming in Pacitan generates private and social profits and competitiveness as indicated by the Private Cost Ratio (PCR) and the Domestic Resource Cost Ratio (DRCR) of less than one. The maize farming in the rainy season I and the dry season does not generate either profit or competitiveness. In general, the level of government protection of agricultural outputs is considered low but the protection of both tradable and non-tradable agricultural inputs is high. The government policy on agricultural outputs and inputs simultaneously does not protect maize farming effectively.

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“…The low nitrogen status of salt affecting soil might be due to high cropping intensity, inadequate application of organic matter in terms of manure, compost and high volatilization of ammonium nitrogen. According to Sonko et al (2016) the reasons behind nitrogen deficiency might be having crop residues and lack of mineralization process in the dry season. To fix nitrogen deficiency organic or inorganic fertilizer should be used.…”

Section: Total Nitrogen (N)mentioning

confidence: 99%

Seasonal and Land Type Based Soil Chemical and Nutrient Status in Agricultural Lands of Coastal District, Bagerhat, Bangladesh

et al. 2018

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The present study investigated the land type based seasonal status of agricultural topsoil chemical properties at Bagerhat district, Bangladesh. Because of relief and seasonal effect we hypothesized the changes of soil nutrient and chemical properties in topsoil. Composite soil samples were collected from fifteen purposive sampling points in pre-monsoon and post-monsoon period of 2016-2017. Soil digestion and analysis were performed following standard procedures. Topsoil pH was strongly alkaline to slightly alkaline (8.02-7.85) in pre-monsoon and post-monsoon with a significant variation. Seasonal OM status was below the optimum level (<3.4). Mean salinity status was very slightly saline in both seasons. Total nitrogen status was low in different lands in both seasons. Phosphorus status was very low (<0.06µg/g) in post-monsoon for upland and wetland crops. Sulfur status was very high (>45.0µg/g) in both seasons for upland and wetland crops. Seasonal mean status of B, Ca and Mg was very high in different lands. Status of Zinc was medium in both seasons having a deficiency (<9.0 µg/g) in some lands. Multivariate analysis showed that lowlands were rich in salinity, OM, K, Ca, total nitrogen and S comparing with medium lowland and medium highland (LL>MLL>MHL). Considering the above issues present study suggests to avoiding excessive use of chemical fertilizer and encourages organic fertilizer for sustainable management of these agricultural lands.

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Wet and Dry Season Effects on Select Soil Nutrient Contents of Upland Farms in North Bank Region of the Gambia

Cited by 4 publications

References 6 publications

Relationship between Chemical Composition and In Vitro Methane Production of High Andean Grasses

Relationship between Chemical Composition and In Vitro Methane Production of High Andean Grasses

The Policy Analysis Matrix in Measuring Competitiveness of Maize Farming System in Marginal Areas

Seasonal and Land Type Based Soil Chemical and Nutrient Status in Agricultural Lands of Coastal District, Bagerhat, Bangladesh

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