Abstract
The Present study was designed to investigate the effect of rice straw compost, recommended mineral nitrogen fertilizers and their combinations on growth, yield and yield attributes of Egyptian hybrid rice 1 variety ( EHR1) as well as incidence of white head, leaf miner and sheath rot disease in hybrid rice and its productivity. The trail was carried out at the experimental farm of Sakha Agriculture Research Station as part of research activity of Rice Research Department, Sakha, Kafr El-Sheikh during 2013 and 2014 seasons. The studied treatments were performed as follows: control, 69kg N fed-1, 2.5 t rice straw compost (RSC), 23 kg N fed-1 + 2.5t RSC and 46 kg N fed -1+ 2.5t RSC fed-1. The infestations of stem borer and leaf miner insects as well as sheath rot disease were measured. Results indicated that growth yield and yield attributing components were significantly influenced by varying fertilizer treatments, either rice straw compost or mineral nitrogen or their combinations in both seasons. Both treatments of 69kg N fed-1 and 46 kg N fed -1+ 2.5t RSC fed-1 were comparatively better in almost studied characteristics indicating the possibility to reduce the mineral nitrogen by one third on the recommended rate. The economic values have been estimated. Rice fertilized with mineral nitrogen at the recommendation rate had the highest level of white heads. The lowest values of white head % were recorded when rice plants were fertilized with 2.5 RSC t fed-1 in both seasons. The applications of sole composted rice straw reduced sheath rot disease infection percentage when applied alone or mixed with 23 kg N fed-1. The treatment of 69 kg N fed-1 gave the highest values of net return followed by the treatment of 46 kg N fed -1+ 2.5t RSC in both seasons of study. To sum up, from the point of view of yield, economic and soil sustainability as well as environment and pest management, the treatment of 46 kg N fed -1+ 2.5t RSC could be recommended.
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Claims 10
Claim · model-written summary
Fertilizer treatments significantly influenced growth, yield and yield components in both seasons.
Not reportedTaxonComparatorDirection
Verbatim
e0“growth yield and yield attributing components were significantly influenced by varying fertilizer treatments”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
The 69 kg nitrogen rate performed better in nearly all studied characteristics.
Not reportedTaxonComparator
Verbatim
e0“Both treatments of 69kg N fed-1 and 46 kg N fed -1+ 2.5t RSC fed-1 were comparatively better in almost studied characteristics”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
The combined 46 kg nitrogen and compost treatment performed better in nearly all studied characteristics.
Not reportedTaxonComparator
Verbatim
e0“Both treatments of 69kg N fed-1 and 46 kg N fed -1+ 2.5t RSC fed-1 were comparatively better in almost studied characteristics”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
Recommended rate mineral nitrogen produced the highest white head level.
- Taxon
- Rice
Oryza sativae0 - Treatment
- mineral nitrogen at the recommendation ratee0
- Outcome
- white headse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice fertilized with mineral nitrogen at the recommendation rate had the highest level of white heads”
Claim · model-written summary
Compost alone gave the lowest white head percentage in both seasons.
- Taxon
- riceOryza sativae0
- Treatment
- 2.5 RSC t fed-1e0
- Outcome
- white head %e0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest values of white head % were recorded when rice plants were fertilized with 2.5 RSC t fed-1 in both seasons”
Claim · model-written summary
Compost alone reduced sheath rot disease infection percentage.
- Treatment
- sole composted rice strawe0
- Outcome
- sheath rot disease infection percentagee0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“The applications of sole composted rice straw reduced sheath rot disease infection percentage when applied alone”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
Compost mixed with 23 kg nitrogen reduced sheath rot disease infection percentage.
- Treatment
- mixed with 23 kg N fed-1e0
- Outcome
- sheath rot disease infection percentagee0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“reduced sheath rot disease infection percentage when applied alone or mixed with 23 kg N fed-1”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
The 69 kg nitrogen rate gave the highest net return.
Not reportedTaxonComparator
Verbatim
e0“The treatment of 69 kg N fed-1 gave the highest values of net return”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
The combined 46 kg nitrogen and compost treatment ranked second in net return.
Not reportedTaxonComparator
Verbatim
e0“followed by the treatment of 46 kg N fed -1+ 2.5t RSC in both seasons of study”
t0“EGYPTIAN HYBRID RICE 1”
Claim · model-written summary
The authors recommend 46 kg nitrogen plus 2.5 t compost for yield, economics, soil sustainability and pest management.
Not reportedTaxon
Verbatim
e0“the treatment of 46 kg N fed -1+ 2.5t RSC could be recommended”
t0“EGYPTIAN HYBRID RICE 1”
The same questions in other papers
fertilization · disease · Oryza sativa (rice)Positive and negative results
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