Characteristics of saline soil and effect of fertilizer application to rice yield

SoilSalinity

Characteristics of saline soil determine the rice yield along the seaboard. High concentration of dissolved salt decreases growth and rice yield. The study aimed to evaluate physical and chemical characteristics of saline soil in Sidoarjo and Surabaya, East Java, Indonesia. The result analysis of soil exchangeable Na+, K+, Ca++, and Mg++respectively was 0.8-1.94; 0.33-2.73; 16.32-20.4, 1.83-8.88 me.100g-1.The value of soil pH was 7.35- 7.55, EC value of soil was 0.64-1.83dS.m-1, and the content of organic-C was between 1.1-2,4,6 %. The result of soil characterization was then crosschecked with the rice yield in saline soil by weighing dry rice grains per clump. The rice yield was 3-4.1 ton.ha-1 and negatively correlated to the exchangeable values of Na, SAR, bulk density and dust content. It was positively correlated with organic-C, fertilizer, exchangeableof Ca++, Mg++, and K+, as well as soil’s CEC. The ratio value of Ca:Mgnamely2.2-8.2, and K:Mgnamely0.18-0.21 exceeded the limit of ideal value and caused low production. The rice yield was negatively correlated with the content of exchangeableNa+, values of pH and EC. It achieved more than 4 ton.ha-1when added with 300-450 g.plant-1 of organic materials and 1.0-1.3 g.plant-1 of NPK.

Article Source:  Volume 6, Number 1, January 2015 – IJAAR

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s