Effect of corncob compost on plant growth in an acid red soil

Abstract

A comparison of corncob compost with lime on plant growth was studied in acid red soil with pH of 4.07. Lettuce, pea, and corn were selected as test plants for their varying tolerance to acid soil. The pot experiment compared six soil treatments and a check. Soil amendments were 1, 2, and 4 cmol calcium carbonate (CaCO 3 ) kg -1 and 5, 10, and 20 g corncob compost kg -1 soil. Results showed higher manganese (Mn) than aluminum (Al) content of the shoot in all check group plants. Reduced shoot Mn content increased shoot dry weight in all test plants, regardless of acid soil tolerance or soil treatment. The higher the test plant resistance to soil acidity, the weaker the detoxification effect of corncob compost was on Al uptake when compared with the check group. Liming was more effective at reducing shoot Mn content than corncob compost with the exception of the more acidity sensitive lettuce. Shoot phosphorus (P) content, however, increased with corncob compost from enhanced organic matter rates. Corncob compost treatments significantly increased shoot dry weight over liming in the acid soil. This study demonstrated an environmentally acceptable use for an agricultural waste. 673

Avaliação da escória de siderurgia e de calcários como corretivos da acidez do solo no cultivo da alface

“…As respostas positivas da alface à calagem evidenciam a suscetibilidade da espécie à acidez do solo e, portanto, à necessidade da adoção dessa prática para aumentar a produtividade (Hemphill & Jackson, 1982;Trani et al, 1996;Chung & Wu, 1997). Por outro lado, Nicoulaud et al (1990) não constataram resposta da alface quando cultivada em condições de acidez do solo (pH, 5,4; Ca, 23 mmol c dm -3 e Mg, 14 mmol c dm -3 ).…”

Effects of Bentonite, Charcoal and Corncob for Soil Improvement and Growth Characteristics of Teak Seedling Planted on Acrisols in Northeast Thailand

“…For the ratio of bentonite, charcoal, and corncob to add to sandy soil, we established 4% as being suitable because the literature showed positive effects at this ratio [26,28,38]. In July 2013, we prepared 7 kg each of bentonite and charcoal (made from Acacia sp.)…”

Rice Growth and Nutrient Accumulation as Affected by Different Composts

“…The P accumulation of composttreated plants was higher than for those receiving the CHEM treatment. Chung and Wu (1997) and Hue (1991) indicated that organic matter increased the availability of soil phosphate. The activity of organic matter in making soil phosphate available has been attributed to the ability of certain metabolic products, of microbiological decomposition, to form stable complex molecules with the iron and aluminum responsible for phosphate fixation in acid soils.…”