Abstract
<p><strong>Background</strong>. Salinity cause reducing the growth and yield of crops. The application of ameliorants was an alternative to reduce salinity stress and increasing the growth and yield of crops. <strong>Objective</strong>. To evaluate the response of maize crops with ameliorants application on saline soil. <strong>Methodology</strong>. The research was conducted in Sidomukti Village District, Brondong Lamongan. The research used split-plot designs with main plots were varieties (P-21 and Bisma) and subplots were ameliorant types (without ameliorant, cow manure, gypsum, Sunhemp (<em>Crotalaria juncea</em>) and rice straw). <strong>Results</strong>. The application of ameliorants at saline soil reducing salinity stress with increasing the growth and yield of maize. Gypsum and cow manure were appropriate to increase growth and yield of both maize varieties P-21 and Bisma. Gypsum and cow were also increasing the content of Nitrogen, Phosphorus and Potassium of plants, as well as reducing the content of proline, Na and Cl shoot root ratio. <strong>Implications</strong>. Crops production in saline soil can use ameliorants e.g. cow manure and gypsum. <strong>Conclusion</strong>. The use of ameliorants such as gypsum or cow manure can increase maize growth and yield in saline soil.</p>
Highlights
INTRODUCTIONIt causes salinity stress, reducing the growth and yield of plant
High salinity has a double effect on growth, which reduces water potential on the crops caused by increasing the potential osmotic on rooting media, and gives the toxic effects due to high concentration of ions Na+ and Cl- accumulated in plant tissues
The research objective was to study the response of maize plants with application types of ameliorant on saline soil
Summary
It causes salinity stress, reducing the growth and yield of plant. Compost of rice straw reduced soil salinity through increasing Ca2+, K+, organic matter capacity exchange cation (CEC) and water holding capacity (Mahmoud et al, 2009). Application rice straw, green manure, cow/chicken manure increase plant growth, yield, nutrient uptake and decrease soil pH (Zhao et al, 2014; Awad et al, 2015; Akter et al, 2018). Islam et al (2015) reported that Sunhemp used as green manure was able to improve growth, nitrogen uptake and protein content on grain and straw of rice. Gypsum (CaSO4.2H2O) decreased levels of Na+ because the element of Ca2+ from gypsum can replace Na+ and enable to leach which causes decreased pH in soil saline and increasing nutrient use efficiency (Ali and Kahlown, 2001; Horneck et al, 2007) and increasing yield maize, sorghum, luacaena (Chen and Dick, 2011) and rice in saline soil (Helmy et al, 2013). The research objective was to study the response of maize plants with application types of ameliorant on saline soil
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