Response of Gadam Sorghum (Sorghum bicolor) to Farmyard Manure and Inorganic Fertilizer Application

Mwadalu, Riziki

doi:10.30954/0974-1712.01.2022.6

Cited by 17 publications

(25 citation statements)

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“…This may be linked to high sorghum plant population used during the experiment which improve nutrient use efficiency and mine all applied nutrients. This concur with Amede and Dialo (2022), Desta et al (2022) and Mwadalu et al (2022) who reported improvements in nutrient harvesting by crops due to high plant density.…”

Section: Discussionsupporting

confidence: 89%

“…This can be linked to its genetic mechanism which allows it to thrive better under low soil fertility status. Different varieties show different NUE due to their differences in morphological, anatomical and biophysical traits (Hakeem et al, 2018; Mwadalu et al, 2022). The major cause of low agronomic nutrient use efficiency is due to low plant densities caused by low plant population especially in sandy soils (Haarhoff and Swanepoel, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Agronomic nutrient use efficiency (AE) was determined as a means of assessing the effects of sorghum in utilising nutrients. Agronomic nutrient use efficiency was determined using method by Mwadalu et al (2022).…”

Section: Methodsmentioning

confidence: 99%

“…In most dry regions of Africa where sorghum is grown, yield is very low for example in Zimbabwe grain yield averages at 532 kg ha −1 (Twomlow et al, 2008; Marumbi et al, 2020; Kugedera et al, 2022d). Sorghum grain yields can be improved with the adoption of good agronomic practices in dry regions to manage low and erratic rainfall efficiently (Mahinda et al, 2018; Mwadalu et al, 2022). Improving sorghum grain yields above 800 kg ha −1 makes smallholder farmers’ food secure and reduce poverty.…”

Section: Introductionmentioning

confidence: 99%

“…This can make sorghum a better crop for farmers in dry regions since it adapts well to harsh environments (Hakeem et al, 2018). Sorghum has better agronomic nutrient use efficiency and this can increase grain yields (Amede and Dialo, 2022; Desta et al, 2022; Mwadalu et al, 2022). High plant population used in sorghum production reduce nutrient loss and increase nutrient use efficiency (Amede and Dialo, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Sorghum bicolor (L.) grain yield with the use of field edge rainwater harvesting and NPK fertiliser in a dry region of Zimbabwe

Kugedera

Nyamadzawo

Mandumbu

et al. 2022

J of Sust Agri & Env

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Background: Farmers in marginalised areas across Africa are mainly resource poor and have limited capacity to procure enough inorganic fertilisers. This contributed immensely towards declining crop productivity causing food insecurity. Soil moisture stress is another key factor which has led to a decline in crop yields across semi-arid areas. This experiment determines the effects of field edge rainwater harvesting and NPK fertiliser microdosing on sorghum grain yields and agronomic nutrient use efficiency of two sorghum varieties (Macia and SV1). Rainwater harvesting techniques was the main plot factor with three levels (tied contour, infiltration pits and standard contour), sorghum variety was used as subplot factor with two levels (Macia and SV1) and NPK fertiliser as sub-sub plot factor with five levels (0, 25, 50, 100 and 150 kg ha −1 ) with all treatments replicated three times. A randomised complete block design arranged in split-plot was used.Results: Phosphorous was significantly increased from 3.32 to 3.52 mg kg −1 with no significant (p > 0.05) increase in total nitrogen and soil organic carbon. Sorghum grain yields were statistically (p < 0.05) influenced by main treatment factors. Tied contour had considerably higher grain yield (861 kg ha −1 ) than infiltration pits and standard contours. Highest grain yield of 909 kg ha −1 was observed from plots applied 150 kg ha −1 NPK fertiliser. Macia variety performed significantly (p < 0.05) higher than SV1. Grain yields show significant (p < 0.05) increase with increasing fertiliser levels.Interaction of tied contour + Macia+ 150 kg ha −1 NPK fertiliser had significant grain yields (1150 kg ha −1 ) compared to other treatments. Treatments applied NPK fertiliser show significant differences (p < 0.05) than unfertilised plots. Agronomic nutrient use efficiencies were significantly higher (p < 0.05) from all treatments applied 25 kg ha −1 NPK fertiliser. Sorghum variety Macia had better nutrient use efficiency than SV1 in 2017/18 and 2018/19 seasons except during 2019/20 where results show insignificant differences.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhancing Sorghum bicolor (L.) grain yield with the use of field edge rainwater harvesting and NPK fertiliser in a dry region of Zimbabwe

Kugedera

Nyamadzawo

Mandumbu

et al. 2022

J of Sust Agri & Env

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Smallholder farmers' knowledge on the use of bioslurry as a soil fertility amendment input for potato production in Kenya

et al. 2023

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A survey was conducted on farmers' fields at Werugha and Wusi-Kishamba wards in Taita Taveta County, Kenya, to assess the factors influencing farmers' decisions on the use of bioslurry in the management of soil fertility. Knowledge gaps on bioslurry use provide contrasting claims about the value of bioslurry from source, storage and handling, crop types, soil, and climate conditions, and as a fertilizer. The majority of the farmers in the study sites double up as dairy farmers which has resulted in enormous production of under-utilized cow dung. Over-dependence on the use of inorganic fertilizers leads to the destruction of soil physical and biological properties; hence, the provision of essential nutrients required by plants for growth and development is not achieved at the maximum recommended rates. This results in a yield decrease with potato yield ranging from 8 to 15 t ha À1 , which is 2-to 3-times below the achievable yield of 40 t ha À1 . A survey questionnaire was developed and administered to 120 small-scale farmers within the two wards. Results showed that the use of bioslurry has not been well adopted by farmers from the two wards as only 18% responded to using bioslurry on their farms whereas 78% relied on chemical fertilizers and other forms of manures such as farmyard manure. However, even those using slurry had since been reported to have challenges with its use and application.The 36% of farmers who applied bioslurry alone did so due to its availability considering the high cost of inorganic fertilizers while those who combined it with inorganic fertilizers had faith in chemical fertilizers and that they aimed at achieving high crop yields. The major challenges farmers faced while using slurry on their farms were reported to be on lack of knowledge on the exact quantity to be applied per unit area and on the storage of excess slurry from biodigesters. This implied that even though slurry was available, it was still not useful to the farmers due to under/over application and poor storage. The study, therefore, recommends capacity-building programs and agricultural extension services to be developed, to ensure adequate knowledge on bioslurry use and adoption by smallholder farmers in the management of soil fertility in enhancing crop productivity.

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Microdosing of nitrogen fertiliser and cattle manure under in situ rainwater harvesting to improve maize production in smallholder farming system in a semiarid area of Zimbabwe

Kugedera,

Kokerai

2023

J of Sust Agri & Env

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IntroductionMaize production in smallholder farmers located in semiarid areas of Zimbabwe are mainly constrained by soil moisture and nutrient stress. Moisture stress is mainly due to erratic rainfall, high rates of evapotranspiration and limited knowledge of the use of in situ rainwater harvesting (IRWH) techniques. Tied ridges (TRs) are one of the best IRWH techniques which have good potential in mitigating climate change.Materials and MethodsThe study used TR, planting pit (PP) and conventional tillage (CT) as main factors and four rates (0, 29.25, 58.5 and 89.5 kg N ha−1) of nitrogen (N) as subplot factor. Soil organic carbon and available phosphorous were determined using Oslen method where soils were incubated for 2 h at 110°C. Smallholder farmers are limited to apply large quantities of nutrients hence the need for microdosing. The study objective was to evaluate the effects of nutrient microdosing and IRHW techniques on maize grain yield, rainwater use efficiency (RWUE), nitrogen use efficiency (NUE) and return on investment in semiarid areas of Zimbabwe.ResultsInteraction of TR and N microdosing significantly (p < 0.05) improved maize grain yields. IRWH also showed significant effects (p < 0.05) on maize grain yields with a trend: TR > PP > CT. RWUE and NUE were significantly (p < 0.05) improved with the interaction of IRWH and N. Application of 58.5 kg N ha−1 had the highest NUE under TR. TR had the highest (US$1747.23) return on investment when combined with 89.5 kg N ha−1 during 2021/22 cropping season.ConclusionThe use of TR and 89.5 kg N ha−1 proved to be a potential strategy in increasing maize grain yields, produce higher return on investment and increase RWUE. The use of TRs and 89.5 kg N ha−1 is recommended because of high maize grain yield, RWUE and return on investment.

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Response of Gadam Sorghum (Sorghum bicolor) to Farmyard Manure and Inorganic Fertilizer Application

Cited by 17 publications

References 0 publications

Enhancing Sorghum bicolor (L.) grain yield with the use of field edge rainwater harvesting and NPK fertiliser in a dry region of Zimbabwe

Enhancing Sorghum bicolor (L.) grain yield with the use of field edge rainwater harvesting and NPK fertiliser in a dry region of Zimbabwe

Smallholder farmers' knowledge on the use of bioslurry as a soil fertility amendment input for potato production in Kenya

Microdosing of nitrogen fertiliser and cattle manure under in situ rainwater harvesting to improve maize production in smallholder farming system in a semiarid area of Zimbabwe

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