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Effect of levels and sources of silicon on yield and quality of summer paddy

KrishiKosh

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Title Effect of levels and sources of silicon on yield and quality of summer paddy
 
Creator Patil, Yogesh Jayant
 
Contributor Patel, K.G.
 
Subject rice, crop residues, yields, grain, wastes, planting, cereal byproducts, nutrients, developmental stages, inorganic acid salts
 
Description A field experiment on paddy consisting of ten treatment involving different levels and sources of silicon (T1 : Control, T2 : Si @ 200 kg/ ha through rice husk ash, T3 : Si @ 200 kg/ ha through rice husk, T4: Si @ 200 kg/ ha through diatomaceous earth, T5 : Si @ 400 kg/ ha through rice husk ash, T6: Si @ 400 kg/ ha through rice husk, T7 : Si @ 400 kg/ ha through diatomaceous earth, T8: Si @ 600 kg/ ha through rice husk ash, T9 : Si @ 600 kg/ ha through rice husk, T10 : Si @ 600 kg/ ha through diatomaceous earth were tested in RBD with three replications at Main Rice Research Centre, NAU, Navsari during summer season of 2012-13 and 2013-14.
The results of present study revealed that among the different treatments, application of Si increased the growth and yield attributes as compared to control but among the sources and rates, application of Si @ 600 kg/ ha through rice husk ash or rice husk (T8 and T9) recorded significantly higher growth and yield attributes.
Grain and straw yields were also affected significantly due to different treatments. Among the treatments, treatment T8 (application of Si @ 600 kg/ ha through rice husk ash) recorded 6255 and 7205 kg/ha grain and straw yields in pooled analysis respectively which was higher than that recorded in other treatment.
In case of quality parameters such as amylose content, cooking time and gel consistency were not affected significantly by the different treatments.
The content of N, P, K, Fe, Mn, Zn, Cu and Si was determined from rice grain and straw. Among these, content of P, K, Fe and Si in grain and straw of rice was affected significantly due to different treatments, Application of 600 kg Si/ha through RHA (T8) and RH (T9) recorded comparatively higher P, K, Fe and Si content in rice grain and straw during 2012-13, 2013-14 and in pooled analysis.
The result of uptake of major (N, P and K), micronutrients (Fe, Mn Zn and Cu) and Si by rice grain and straw and its total was more or less similar to that observed in grain and straw yield of rice. Application of Si @ 600 kg/ ha either through rice husk ash (T8) or rice husk (T9) recorded comparatively higher uptake of these nutrients by rice grain, straw and its total.
Effect of different sources and levels of Si on bulk density was significant and comparatively lower bulk density was recorded in treatment T9 where rice husk was used as Si source. Among the chemical (pH, EC and Organic C) and fertility parameters (available N, P, K, Fe, Mn, Zn, Cu and Si), only available K, Fe and Si were affected significantly due to different treatments. The content of these nutrients in soil increased with increase in the rate of Si applied through any of the sources. Maximum content of these nutrients in soil were recorded in the treatments involved in application of Si @ 600 kg/ha.
To know the effect of Si on stem borer infestation the observations like dead heart (30 and 60 DAT) and white ear head (pre harvesting stage) were recorded. Per cent dead heart and white ear head were significantly decrease with increase in levels of silicon and minimum was recorded in the treatments where 600 kg Si/ha were applied (Treatment T8, T9, and T10 respectively). The result of correlation study indicated that dead heart and white ear head in rice was significantly and negatively correlated with Si content in grain and straw of rice.
In case of economics, maximum net profit of Rs. 61227 with BCR of 2.28 was recorded in treatment T5 (application of Si @ 400 kg/ ha through rice husk ash) followed by treatment T8 (Si @ 600 kg/ ha through rice husk ash) recorded net profit of Rs. 60051 with BCR of 2.22.
On the basis of two years of experimentation, it can be concluded that application of 400 kg Si through rice husk ash increased rice grain and straw yields and decrease stem borer infestation and improves soil properties and net profit as compared to control
 
Date 2016-04-27T14:57:51Z
2016-04-27T14:57:51Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/65611
 
Language en
 
Format application/pdf
 
Publisher NAU