Yield of four sugar beet genotypes in acidic soils with various soil amendments

Summary. A 5-year study was undertaken to establish if introduced rhizobia with higher tolerance to Al than the current inoculant Rhizobium can persist and continue nodulating subterranean clover (Trifolium subterraneum L.) in acidic soils. Two Rhizobium leguminosarum bv trifolii strains were introduced as seed inoculants with subterranean clover at 2 acidic sites (pHCa 4.1 and pHCa 4.3), where lime and gypsum had been applied as soil amendments. Strain NA3001 was selected for its tolerance to high Al concentrations when grown on an agar medium and WU95, which is a widely used commercial inoculant strain, for its relatively poor tolerance to Al when grown on agar. Liming the soil increased its pH and reduced the concentration of extractable Al at both sites. In the year the subterranean clover was sown, strain WU95 had nodule occupancy of 20–49%, decreasing with time to 4–7% after 5 seasons (1991–95). The nodule occupancy of strain NA3001 was initially lower than strain WU95 (14–16%), but its occupancy did not vary with time (significant strain x time interactions, P<0.05). These data indicate that the acid-tolerant strain NA3001 has the potential to persist in these strongly acidic soils and, despite the presence of high background populations of naturalised rhizobia, to continue initiating nodulation. The use of soil amendments (lime and gypsum) to increase pH and reduce soluble Al concentrations did not affect the nodule occupancy of either NA3001 or WU95 with time, nor did it slow the rate of decline in nodule occupancy of WU95.

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Effect of Mole Drain Spacing, Some Soil Amendments and Boron Fertilization on Improving some Soil Properties and Sugar beet Productivity in Salt-Affected Soils

Journal of Soil Sciences and Agricultural Engineering ◽

10.21608/jssae.2020.109701 ◽

2020 ◽

Vol 11 (7) ◽

pp. 341-347

Author(s):

Sahar Rashed

Keyword(s):

Sugar Beet ◽

Soil Properties ◽

Soil Amendments ◽

Drain Spacing ◽

Salt Affected Soils ◽

Boron Fertilization

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No tillage and sugar beet foam amendment enhanced microbial activity of degraded acidic soils in South West Spain

Applied Soil Ecology ◽

10.1016/j.apsoil.2016.09.012 ◽

2017 ◽

Vol 109 ◽

pp. 69-74 ◽

Cited By ~ 23

Author(s):

Paloma León ◽

Rafael Espejo ◽

Clara Gómez-Paccard ◽

Chiquinquirá Hontoria ◽

Ignacio Mariscal ◽

...

Keyword(s):

Sugar Beet ◽

Microbial Activity ◽

No Tillage ◽

Acidic Soils ◽

South West

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Effects of soil amendments on selected soil chemical properties and productivity of tef (Eragrostis tef [Zucc.] Trotter) in the highlands of northwest Ethiopia

Open Agriculture ◽

10.1515/opag-2021-0048 ◽

2021 ◽

Vol 6 (1) ◽

pp. 702-713

Author(s):

Yirsaw Hunegnaw ◽

Getachew Alemayehu ◽

Dereje Ayalew ◽

Mulatu Kassaye

Keyword(s):

Soil Fertility ◽

Crop Production ◽

Soil Amendments ◽

Chemical Properties ◽

Cattle Manure ◽

Soil Chemical Properties ◽

Eragrostis Tef ◽

Acidic Soils ◽

P Fertilizer ◽

Np Fertilizer

Abstract The lack of sustainable soil fertility management is a critical challenge for crop production in the world. The problem is more serious in the East Gojjam Zone highlands. Integrated use of lime, manure, and chemical fertilizers is considered as a good approach for sustainable crop production on acidic soils. In 2016 and 2017, a field experiment was conducted to determine the effect of soil amendments on soil fertility and tef productivity in the Gozamin district. Factorial combinations of two rates of lime (0 and 2 t ha−1), two rates of NP fertilizers (0/0 and 46/20 kg N/P ha−1), and three rates of cattle manure (0, 10, and 15 t ha−1) were laid out in randomized complete block design with three replications. The results showed that applying lime in combination with NP fertilizer and manure significantly improved soil chemical properties. Panicle length, effective tillers, and thousand seeds weight of tef increased from 25.1 to 44.4 cm, 2.8 to 11.3, and 0.23 to 0.37 g, respectively, when 10 t ha−1 manure and recommended NP fertilizer were applied together. The highest tef grain yield of 2.31 t ha−1 and net benefit of 2,252.91 USD ha−1 were obtained from the interaction of 10 t ha−1 cattle manure, 46/20 kg ha−1 N/P fertilizer, and 2 t ha−1 lime. This study recommends the combined application of 2 t ha−1 lime, 10 t ha−1 cattle manure, and 46/20 kg ha−1 N/P fertilizer as an effective amendment to improve soil chemical properties and yield of tef in acidic soils of northwest Ethiopian highlands.

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